KR102431809B1 - Method for transmittig an imge signal and method for receiving an image signal - Google Patents

Abstract

Receives an initial image array signal generated from an image sensor to transmit an analog image signal, generates a target image array signal by rearranging the initial image array signal according to a preset remapping mode, and a digital signal target image array generating a target image array analog signal by converting the signal into an analog signal, generating a vertical synchronization signal for the target image array analog signal, and sending an image signal including the target image array analog signal and the vertical synchronization signal to an image signal receiving device send.

Description

How to transmit and receive an image signal

The following embodiments relate to a technique for transmitting and receiving an image signal, and specifically to a technique for transmitting and receiving an analog image signal.

A method of transmitting an image may include a method using an open circuit and a method using a closed circuit. Since the method using the open circuit requires transmitting image signals to a large number of unspecified users, a standardized method may be used to transmit the image. On the other hand, since the method of transmitting an image using a closed circuit transmits an image signal only to a specific user, only a specific user may know a method of transmitting the image signal.

In general, the composite signal used in closed circuit systems follows the standard scheme for analog color television. Since the standard method uses a limited frequency band, a problem of cross color and luminance mixing may occur.

Korean Patent Application Laid-Open No. 10-2006-0063723 (published on December 05, 2005) discloses an invention related to an apparatus for processing an image signal and a method for transmitting an image signal. The disclosed invention is applied to the display of a video signal by the NTSC method, etc. to effectively avoid the display of unnatural edges and to efficiently process a video signal having a high frame frequency by a simple configuration. The disclosed invention allocates one frame of a color difference signal to a plurality of frames of a luminance signal by setting the median value on the time axis in one frame of the color difference signal to be closest to the median value on the time axis in a plurality of frames of the corresponding luminance signal. .

An embodiment may provide a method and apparatus for transmitting an analog image signal to an image signal receiving apparatus.

An embodiment may provide a method and apparatus for receiving an analog image signal from an image signal transmission apparatus.

However, the technical tasks are not limited to the above-described technical tasks, and other technical tasks may exist.

According to one aspect, an image signal transmission method, performed by an image signal transmission apparatus, includes receiving an initial image array signal generated from an image sensor, and a preset re-mapping mode for the initial image array signal. generating a target image array signal by rearranging according to generating, and transmitting an image signal including the target image array analog signal and the vertical synchronization signal to an image signal receiving apparatus.

The image sensor consists of an array pattern comprising R (red) pixels, G (green) pixels, and B (blue) pixels, and the initial image array signal includes a plurality of R elements picked up by a plurality of R pixels. , a plurality of G elements picked up by a plurality of G pixels, a plurality of B elements picked up by a plurality of B pixels, wherein generating the target image array signal comprises: and generating the target image array signal by rearranging the initial image array signal according to the remapping mode to include only one type of element or two different types of elements in one horizontal line.

The remapping mode may be a mode for generating the target image array signal such that only a portion of the plurality of G elements is included in the single horizontal line.

The remapping mode is a mode for generating the target image array signal so that only a portion of two different types of elements is included in the single horizontal line, and the generating of the target image array signal includes: further comprising adding a dummy element between the first kind of element and the second kind of element of the one horizontal line of It may include generating a synchronization signal.

The dummy element may be an element that duplicates an element of a preset area of the initial image array signal.

The array pattern of the image sensor may further include infrared (infrared) pixels.

The array pattern of the image sensor may include W (white) pixels instead of the G pixels.

The transmitting of the image signal to the image signal receiving apparatus includes generating the image signal to include the target image array analog signal and the vertical synchronization signal, and transmitting the image signal to the image signal receiving apparatus through a cable. It may include the step of transmitting.

According to another aspect, an image signal transmission apparatus for performing an image signal transmission method includes a memory in which a program for transmitting an image signal is recorded, and a processor for executing the program, wherein the program is generated from an image sensor Receiving the initial image array signal, generating a target image array signal by rearranging the initial image array signal according to a preset re-mapping mode, converting the target image array signal, which is a digital signal, into an analog signal generating a target image array analog signal by converting it into a signal, generating a vertical synchronization signal for the target image array analog signal, and converting an image signal including the target image array analog signal and the vertical synchronization signal to an image signal The step of transmitting to the receiving device is performed.

According to another aspect, an image output method, performed by an image signal receiving apparatus, includes receiving an image signal from an image signal transmitting apparatus, wherein the image signal is an initial image array signal generated from an image sensor rearranged comprising a target image array analog signal corresponding to a target image array signal, separating the target image array analog signal in the image signal based on a vertical sync signal of the image signal, converting the target image array analog signal to digital generating a target image array signal by converting it into a signal, generating an initial image array signal by rearranging the target image array signal according to a preset re-mapping mode, and generating the initial image array signal outputting or saving.

The image sensor consists of an array pattern comprising R (red) pixels, G (green) pixels, and B (blue) pixels, and the initial image array signal includes a plurality of R elements picked up by a plurality of R pixels. , a plurality of G elements picked up by a plurality of G pixels, a plurality of B elements picked up by a plurality of B pixels, wherein the target image array signal comprises one horizontal line of the target image array signal can contain only one kind of element or two different kinds of elements.

The target image array signal may include only a portion of the plurality of G elements in the single horizontal line.

The target image array signal may include only a portion of two different types of elements in the single horizontal line.

The generating of the initial image array signal may include: when only a portion of two different types of elements is included in the one horizontal line of the target image array signal, it is included between an element of a first type and an element of a second type generating the initial image array signal by removing the removed dummy element; and rearranging the target image array signal from which the dummy element is removed according to the preset remapping mode.

The array pattern of the image sensor may further include infrared (infrared) pixels.

The array pattern of the image sensor may include W (white) pixels instead of the G pixels.

According to another aspect, an apparatus for receiving an image signal performing a method for receiving an image includes a memory in which a program for receiving an image is recorded, and a processor for executing the program, wherein the program transmits an image signal receiving an image signal from a device, the image signal comprising a target image array analog signal corresponding to a rearranged target image array signal with an initial image array signal generated from an image sensor, a vertical sync signal of the image signal Separating the target image array analog signal in the image signal based on re-mapping), generating an initial image array signal by rearranging according to a mode, and outputting the initial image array signal.

A method and apparatus for transmitting an analog image signal to an image signal receiving apparatus may be provided.

A method and apparatus for receiving an analog image signal from an image signal transmission apparatus may be provided.

1 is a block diagram of an image signal transmission system according to an example.
2 is a block diagram of an image signal transmission apparatus according to an exemplary embodiment.
3 is a flowchart of an image signal transmission method according to an embodiment.
4 illustrates an initial image array signal generated based on an RGB array pattern according to an example.
5 illustrates an initial image array signal generated based on an RGBIR array pattern according to an example.
6 illustrates a target image array signal generated according to a specific remapping mode according to an example.
7 illustrates a target image array signal according to another example according to an example.
8 is a flowchart of a method of generating a target image array signal by adding a dummy element according to an example.
9 to 14 respectively illustrate methods of generating a target image array signal by adding a dummy element according to example embodiments.
15 illustrates a vertical synchronization signal of an image signal according to an example.
16 illustrates an active line including a target image array analog signal according to an example.
17 is a block diagram of an apparatus for receiving an image signal according to an exemplary embodiment.
18 is a flowchart of a method for receiving an image signal according to an exemplary embodiment.
19 is a flowchart of a method of generating an initial image array signal by removing a dummy element according to an example.

Specific structural or functional descriptions of the embodiments are disclosed for purposes of illustration only, and may be changed and implemented in various forms. Accordingly, the actual implementation form is not limited to the specific embodiments disclosed, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit described in the embodiments.

Although terms such as first or second may be used to describe various elements, these terms should be interpreted only for the purpose of distinguishing one element from another. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component.

When a component is referred to as being “connected” to another component, it may be directly connected or connected to the other component, but it should be understood that another component may exist in between.

The singular expression includes the plural expression unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate that the described feature, number, step, operation, component, part, or combination thereof exists, and includes one or more other features or numbers, It should be understood that the possibility of the presence or addition of steps, operations, components, parts or combinations thereof is not precluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present specification. does not

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, the same components are assigned the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted.

1 is a block diagram of an image signal transmission system according to an example.

The image signal transmission system 100 may include an image sensor 110 , an image signal transmission device 120 , and an image signal reception device 130 . Additionally, the image signal transmission system 100 may further include a display 140 capable of outputting an image. For example, the image signal transmission system 100 may be a closed circuit system. The image signal transmission system 100 may be installed in a building or a vehicle, and is not limited to the described embodiment.

According to one aspect, the image signal transmission system 100 may be a system for a closed circuit television. For example, the image signal transmission apparatus 120 may generate an initial image array signal using the image sensor 110 . The generated initial image array signal may be, for example, data of a Bayer pattern or data of a modified Bayer pattern. The image signal transmitting apparatus 120 may transmit an image signal generated based on the initial image array signal to the image signal receiving apparatus 130 through the cable 125 . The transmitted image signal may be an analog signal. The image signal receiving apparatus 130 may generate an image by restoring an initial image array signal within the received analog signal and post-processing the initial image array signal. The generated image may be output or stored using the display 140 .

As the digital image photographed by the image sensor 110 is of high quality, when an image signal is transmitted using an analog method, as a high frequency is used to transmit the image signal, a phenomenon in which the image signal is deteriorated in a high frequency band may occur. can For example, interference may occur between adjacent elements within the image signal.

Hereinafter, a method of transmitting an image signal will be described in detail with reference to FIGS. 2 to 16 , and a method of receiving an image signal will be described in detail with reference to FIGS. 17 to 19 .

2 is a block diagram of an image signal transmission apparatus according to an exemplary embodiment.

The image signal transmission apparatus 200 includes a communication unit 210 , a processor 220 , and a memory 230 . For example, the image signal transmission apparatus 200 may further include an image sensor 110 . The image sensor 110 may be included in a closed circuit television (CCTV) or a black box, and is not limited to the described embodiment.

The communication unit 210 is connected to the processor 220 , the memory 230 , and the image sensor 110 to transmit and receive data. The communication unit 210 may be connected to another external device to transmit/receive data. Hereinafter, the expression "transmitting and receiving "A" may indicate transmitting and receiving "information or data representing A".

The communication unit 210 may be implemented as circuitry in the image signal transmission apparatus 200 . For example, the communication unit 210 may include an internal bus and an external bus. As another example, the communication unit 210 may be an element that connects the image signal transmission apparatus 200 and an external device. The communication unit 210 may be an interface. The communication unit 210 may receive data from an external device and transmit the data to the processor 220 and the memory 230 .

The processor 220 processes data received by the communication unit 210 and data stored in the memory 230 .

A “processor” may be a data processing device implemented in hardware having circuitry having a physical structure for performing desired operations. For example, desired operations may include code or instructions included in a program. For example, a data processing device implemented as hardware includes a microprocessor, a central processing unit, a processor core, a multi-core processor, and a multiprocessor. , an Application-Specific Integrated Circuit (ASIC), and a Field Programmable Gate Array (FPGA).

Processor 220 executes computer readable code (eg, software) stored in memory (eg, memory 230 ) and instructions issued by processor 220 .

The memory 230 stores data received by the communication unit 210 , data processed by the processor 220 , and image information generated by the image sensor 110 . For example, the memory 230 may store a program (or an application, software). The stored program may be a set of syntaxes coded to transmit an image signal and executable by the processor 220 .

According to one aspect, memory 230 may include one or more volatile memory, non-volatile memory and random access memory (RAM), flash memory, hard disk drive, and optical disk drive.

The memory 230 stores a command set (eg, software) for operating the image signal transmission apparatus 200 . The instruction set for operating the image signal transmission apparatus 200 is executed by the processor 220 .

The image sensor 110 receives light and generates image information corresponding to the received light. For example, the image sensor 110 may generate an initial image array signal (eg, Bayer pattern data) as image information.

The communication unit 210 , the processor 220 , and the memory 230 will be described in detail below with reference to FIGS. 3 to 16 .

3 is a flowchart of an image signal transmission method according to an embodiment.

The following steps 310 to 350 are performed by the image signal transmission apparatus 200 described above with reference to FIG. 2 .

In operation 310 , the image signal transmission apparatus 200 receives an initial image array signal generated from the image sensor 110 . The initial image array signal may be a digital signal.

The shape of the initial image array signal may vary depending on the array pattern of the image sensor 110 . For example, the image sensor 110 may be configured with an RGB array pattern including R (red) pixels, G (green) pixels, and B (blue) pixels. As another example, the image sensor 110 may be configured in an RBGIR array pattern including R pixels, G pixels, B pixels, and infrared (IR) pixels. As another example, the image sensor 110 may be configured in an RWB array pattern including R pixels, W (white) pixels, and B pixels. The array pattern of the image sensor 110 is not interpreted as being limited to the described embodiment.

When the initial image array signal is converted into an analog signal and the converted image signal is transmitted, when various types of elements are included in the horizontal line included in the active line of the image signal, the value of the element is changed due to interference between neighboring elements. can be distorted. If the value of the element is distorted, it appears as deterioration of the image created through post-processing. In order to prevent the values of these elements from being distorted, the initial image array signal may be rearranged.

In operation 320, the image signal transmission apparatus 200 generates a target image array signal by rearranging the initial image array signal according to a preset re-mapping mode.

According to one aspect, the target image array signal may be generated so that the elements included in each of the horizontal lines of the target image array signal are of one type or two different types.

A particular remapping mode may define a particular way of rearranging elements in the initial image array signal. Various remapping modes are described in detail below with reference to FIGS. 6 to 14 .

In operation 330 , the image signal transmission apparatus 200 generates a target image array analog signal by converting the target image array signal, which is a digital signal, into an analog signal.

In operation 340, the image signal transmission apparatus 200 generates a vertical sync signal with respect to the target image array analog signal. The vertical sync signal may be an analog signal. The length of the vertical sync signal may vary according to the length of one horizontal line of the target image array analog signal.

In step 350 , the image signal transmitting apparatus 200 transmits an image signal including the target image array analog signal and the vertical synchronization signal to the image signal receiving apparatus (eg, the image signal receiving apparatus 130 of FIG. 1 ). . For example, the image signal transmitting apparatus 200 may transmit an image signal to the image signal receiving apparatus through a cable such as a coaxial cable.

The image signal receiving apparatus may generate or restore an initial image array signal by processing the received image signal. The initial image array signal restored by the image signal receiving apparatus does not deteriorate in image quality, and thus may be the same as the initial image array signal generated by the image sensor 110 . A method for the image signal receiving apparatus to receive the image signal will be described in detail below with reference to FIGS. 17 to 19 .

4 illustrates an initial image array signal generated based on an RGB array pattern according to an example.

According to one aspect, the image sensor 110 may be configured in an RGB array pattern including R pixels, G pixels, and B pixels. The initial image array signal 400 generated in the RGB array pattern may be arranged such that two different types of elements frequently alternate in one horizontal line. In the analog image signal generated based on the initial image array signal 400 , image quality deterioration may occur during transmission.

Although not shown, according to another aspect, the image sensor 110 may be configured in an RWB array pattern including R pixels, W pixels, and B pixels. Similarly to the initial image array signal 400 , the initial image array signal generated by the RWB array pattern is arranged such that two different types of elements are frequently alternately arranged on one horizontal line, so the analog image signal generated based thereon is Degradation of image quality may occur during the transmission process.

5 illustrates an initial image array signal generated based on an RGBIR array pattern according to an example.

According to one aspect, the image sensor 110 may be configured in an RGBIR array pattern including R pixels, G pixels, B pixels, and IR pixels. The initial image array signal 500 generated in the RGBIR array pattern may be arranged such that two or three different types of elements are frequently alternated on one horizontal line. In the analog image signal generated based on the initial image array signal 500 , quality deterioration may occur during transmission.

6 illustrates a target image array signal generated according to a specific remapping mode according to an example.

In step 320 described above with reference to FIG. 3 , the image signal transmission apparatus 200 may generate the target image array signal 600 by rearranging the initial image array signal 400 according to a specific remapping mode. .

The target image array signal 600 may be generated such that only one type of element is included in each of the horizontal lines 610 , 620 , 630 , and 640 of the target image array signal 600 . A method of arranging elements of one horizontal line may vary according to a remapping mode. The remapping mode applied to the target image array signal 600 may be a method of first arranging elements of a horizontal line positioned at an upper end in the initial image array signal 400 and an element positioned at a relatively left side in the same upper horizontal line.

7 illustrates a target image array signal according to another example according to an example.

A remapping mode different from the remapping mode applied to generate the target image array signal 600 described above with reference to FIG. 6 may be used to generate the target image array signal 700 .

The target image array signal 700 may be generated such that only one type of element is included in each of the horizontal lines 710 , 720 , 730 , 740 of the target image array signal 700 , but the target image array signal 600 ) may be arranged differently from the horizontal lines 610 , 620 , 630 , and 640 .

For example, the remapping mode applied to the target image array signal 700 may include elements of a first type representing G pixels located on the first horizontal line and the second horizontal line of the initial image array signal 400 to the horizontal line 710 . ) and arranging the first type of elements representing the G pixels located on the third and fourth horizontal lines of the initial image array signal 400 on the horizontal line 730 .

Since the target image array signals 600 and 700 described with reference to FIGS. 6 and 7 include only one type of element in one horizontal line, the target image array signals 600 and 700 are analog signals. Even if it is converted to and transmitted, distortion does not occur in the reconstructed image, or the possibility thereof is low. However, when two different types of elements are included in one horizontal line of the target image array signals, distortion is still highly likely to occur in the reconstructed image. To prevent this, when two different types of elements are included in one horizontal line of the target image array signals, a method of adding a dummy element therebetween may be considered. When a dummy element is added, distortion due to interference generated between two different types of elements can be prevented.

A method of generating a target image array signal by adding a dummy element will be described in detail below with reference to FIGS. 8 to 14 .

8 is a flowchart of a method of generating a target image array signal by adding a dummy element according to an example.

According to one aspect, the step 320 described above with reference to FIG. 3 may include the following steps 810 and 820 .

In step 810, the image signal transmission apparatus 200 rearranges the initial image array signal according to the remapping mode so that only two different types of elements are included in one horizontal line of the target image array signal, thereby the target image array generate a signal

In step 820 , the image signal transmission apparatus 200 adds one or more dummy elements between the elements of the first type and the elements of the second type of one horizontal line of the target image array signal. For example, an added dummy element may have no value. As another example, the added dummy element may be an element that duplicates an element of a preset area of the initial image array signal. As an example, the dummy element may be an element that duplicates the frontmost elements or the rearmost elements of the initial image array signal. As another example, the added dummy element may be an element that duplicates an element adjacent to the area to be added.

According to one aspect, the number of dummy elements to be added may be two. For example, a first dummy element of a first type may be arranged adjacent to an element of a first type, and a second dummy element of a second type may be arranged adjacent to an element of a second type. The first dummy element and the second dummy element may be adjacent to each other. That is, within one horizontal line, elements may be arranged in the order of the element of the first termination, the first dummy element, the second dummy element, and the second type of element.

When the dummy element is added to the target image array signal, the total length of the horizontal line is longer than the length of the horizontal line of the existing initial image array signal. Accordingly, the vertical synchronization signal generated in step 340 may also be lengthened to correspond to the increased length of the horizontal line.

9 to 14 respectively illustrate methods of generating a target image array signal by adding a dummy element according to example embodiments.

Each of the horizontal lines of the target image array signal 910 shown in FIG. 9 includes two different types of elements. For example, there is a high possibility that distortion due to interference occurs between the Gr ₀₆ element and the R ₀₁ element. To prevent distortion from occurring, a dummy element D ₀₀ may be added between the Gr ₀₆ element and the R ₀₁ element. In the illustrated embodiment, only one dummy element (D ₀₀ ) is added between the Gr ₀₆ element and the R ₀₁ element, but according to the embodiment, a first dummy element of the same type as the Gr ₀₆ element and the same type as the R ₀₁ element A second dummy element may be added successively. Since the lengths of the horizontal lines must be equal to each other, the dummy elements 930 may be added at the same position of the horizontal lines. A target image array signal 920 to which dummy elements 930 are added may be generated.

Each of the horizontal lines of the target image array signal 1010 shown in FIG. 10 includes two different types of elements. For example, distortion due to interference between the G ₀₆ element and the R ₀₁ element is highly likely to occur. In order to prevent distortion from occurring, a dummy element D ₀₀ may be added between the G ₀₆ element and the R ₀₁ element. Additionally, distortion due to interference between the R ₀₅ element and the B ₀₃ element is highly likely to occur. In order to prevent distortion from occurring, a dummy element D ₀₁ may be added between the R ₀₅ element and the B ₀₃ element. Since the lengths of the horizontal lines must be equal to each other, the dummy elements 1030 and 1040 can be added at the same position of the horizontal lines. A target image array signal 1020 to which dummy elements 1030 and 1040 are added may be generated.

The first horizontal line and the third horizontal line of the target image array signal 1110 shown in FIG. 11 consist only of elements of a type representing the G pixel, but each of the second horizontal line and the fourth horizontal line has two different elements. It contains elements of the kinds of For example, there is a high possibility that distortion due to interference occurs between the R ₂₇ element and the B ₀₃ element. In order to prevent distortion from occurring, a dummy element D ₁₀ may be added to the R ₂₇ element and the B ₀₃ element. Since the lengths of the horizontal lines must be equal to each other, the dummy elements 1130 may be added at the same position of the horizontal lines. A target image array signal 1120 to which dummy elements 1130 are added may be generated.

The first horizontal line and the third horizontal line of the target image array signal 1210 shown in FIG. 12 are composed only of elements of a type representing the G pixel, but each of the second horizontal line and the fourth horizontal line has two different elements. It contains elements of the kinds of For example, there is a high possibility that distortion due to interference occurs between the R ₂₇ element and the B ₂₁ element. In order to prevent distortion from occurring, a dummy element D ₁₀ may be added to the R ₂₇ element and the B ₂₁ element. Since the lengths of the horizontal lines must be equal to each other, the dummy elements 1230 may be added at the same position of the horizontal lines. A target image array signal 1220 to which dummy elements 1230 are added may be generated.

There is a high possibility that distortion due to interference occurs between the R ₀₇ element and the B ₁₀ element of the target image array signal 1310 shown in FIG. 13 . In order to prevent distortion from occurring, a dummy element D ₁₀ may be added to the R ₀₇ element and the B ₁₀ element. Since the lengths of the horizontal lines should be equal to each other, the dummy elements 1330 may be added at the same positions of the horizontal lines. A target image array signal 1320 to which dummy elements 1330 are added may be generated.

There is a high possibility that distortion due to interference occurs between the R ₂₇ element and the B ₀₃ element of the target image array signal 1410 shown in FIG. 14 . In order to prevent distortion from occurring, a dummy element D ₁₀ may be added to the R ₂₇ element and the B ₀₃ element. Since the lengths of the horizontal lines should be equal to each other, the dummy elements 1430 may be added at the same position of the horizontal lines. A target image array signal 1420 to which dummy elements 1430 are added may be generated.

Each of the target image array signals 920 , 1020 , 1120 , 1220 , 1320 , and 1420 generated with reference to FIGS. 9 to 14 is converted into an analog signal, thereby generating a target image array analog signal.

15 illustrates a vertical synchronization signal of an image signal according to an example.

The finally generated analog signal, the image signal 1500 , includes a vertical sync signal and a target image array analog signal. The image signal 1500 may be a signal corresponding to one image (or frame). For example, the image signal may include 750 vertical lines, and the number of vertical lines may vary according to the resolution of the image sensor 110 . The vertical lines may be lines from the top of the frame to the bottom of the frame. That is, line 1 may be the uppermost line of the frame.

Lines 1 to 5 of the image signal may be serration pulses. The serration pulse may be a vertical sync pulse. Lines 6 to 10 of the image signal may be post equalizing pulses. The equalizing pulse may be a pulse used to accurately interlace. Lines 746 to 750 of the image signal may be pre-equalizing pulses. Lines 11 to 25 of the image signal may be a Vertical Blanking Interval (VBI). Each line of the vertical retrace period may include a vertical sync signal generated through step 340 . Lines 26 to 745 of the image signal may be active lines. The active lines may include the target image array analog signal generated in step 330 . For example, the line 26 may include a first horizontal line of the target image array analog signal, and the line 27 may include a second horizontal line of the target image array analog signal in order.

Although FIG. 15 shows a timing specification in which the number of vertical lines is 750, the description of FIG. 15 may be similarly modified and applied to a timing specification in which the number of vertical lines is 1125 and a timing specification in which the number of vertical lines is 1250.

For example, when the number of vertical lines is 1125, lines 1 to 5 are serration pulses, lines 6 to 10 are post equalization pulses, lines 11 to 40 are vertical retrace periods, lines 41 to 1120 are active lines and Lines 1121 to 1125 may be pre-equalizing pulses.

As another example, when the number of vertical lines is 1250, lines 1 to 5 are serration pulses, lines 6 to 10 are post equalization pulses, lines 11 to 165 are vertical retrace periods, and lines 166 to 1245 are active lines and lines 1246 to 1250 may be pre-equalizing pulses.

According to an aspect, an additional signal indicating additional information may be displayed in a preset area 1510 . For example, the preset area 1510 may be all or part of the vertical retrace period. In the illustrated embodiment, it is preset that the additional signal 1511 is displayed on line 11 of the image signal 1500 . For example, the additional signal 1511 may be a signal indicating a remapping mode applied to generate a target image array signal. As another example, the additional signal 1511 may be a signal indicating the position of the dummy element in the target image array signal.

16 illustrates an active line including a target image array analog signal according to an example.

The active line 1600 including the target image array analog signal in the image signal includes a blank area 1610 and an active area 1620 . It may include a blank area 1610 and a sink 1612 and a burst 1614 . The sink 1612 may be a horizontal synchronization signal. The sink 1612 may be used to generate a horizontal reference signal when demodulating an image signal into a digital signal. The burst 1614 may be a color difference restoration signal.

According to one aspect, the target image array analog signal generated based on the initial image array signal does not correspond to the modulated signal of the luminance signal and the chrominance signal used in the conventional analog image signal transmission method, but only the luminance signal Only signals corresponding to . Accordingly, the active line 1600 may not include the burst 1614 used to separate the color difference signal in the modulated signal at the receiving end of the image signal. That is, according to an embodiment, the blank area 1610 may include the sink 1612 and may not include the burst 1614 .

The active region 1620 includes a signal of any one horizontal line of the target image array analog signal. A signal included in the active region 1620 may include only a signal for one channel corresponding to an existing luminance signal.

17 is a block diagram of an apparatus for receiving an image signal according to an exemplary embodiment.

The image signal receiving apparatus 1700 includes a communication unit 1710 , a processor 1720 , and a memory 1730 . For example, the image signal receiving apparatus 1700 may further include a display 140 .

The communication unit 1710 is connected to the processor 1720 and the memory 1730 to transmit and receive data. The communication unit 1710 may be connected to another external device to transmit/receive data.

The communication unit 1710 may be implemented as a circuit network in the image signal receiving apparatus 1700 . For example, the communication unit 1710 may include an internal bus and an external bus. As another example, the communication unit 1710 may be an element that connects the image signal receiving apparatus 1700 and an external device. The communication unit 1710 may be an interface. The communication unit 1710 may receive data from an external device and transmit the data to the processor 1720 and the memory 1730 .

The processor 1720 processes data received by the communication unit 1710 and data stored in the memory 1730 . The processor 1720 may further include an image signal processor (ISP).

Processor 1720 executes computer readable code (eg, software) stored in memory (eg, memory 1730 ) and instructions issued by processor 1720 .

The memory 1730 stores data received by the communication unit 1710 and data processed by the processor 1720 . For example, the memory 1730 may store a program (or an application, software). The stored program may be a set of syntaxes coded to receive an image signal and executable by the processor 1720 .

According to one aspect, memory 1730 may include one or more of volatile memory, non-volatile memory and RAM, flash memory, hard disk drive, and optical disk drive.

The memory 1730 stores an instruction set (eg, software) for operating the image signal receiving apparatus 1700 . An instruction set for operating the image signal receiving apparatus 1700 is executed by the processor 1720 .

The communication unit 1710 , the processor 1720 , and the memory 1730 will be described in detail below with reference to FIGS. 18 and 19 .

18 is a flowchart of a method for receiving an image signal according to an exemplary embodiment.

The following steps 1810 to 1850 are performed by the image signal receiving apparatus 1700 described above with reference to FIG. 17 . Among the terms described through steps 1810 to 1850 , the same terms as those described through steps 310 to 350 represent the same or corresponding meanings.

In operation 1810 , the image signal receiving apparatus 1700 receives an image signal from the image signal transmitting apparatus 200 . For example, an image signal may be received via a cable.

In operation 1820, the image signal receiving apparatus 1700 separates the target image array analog signal in the image signal based on the vertical synchronization signal of the image signal. That is, the target image array analog signal included in the active regions in the active lines of the image signal is separated.

In operation 1830, the image signal receiving apparatus 1700 generates a target image array signal by converting the target image array analog signal into a digital signal.

In operation 1840, the image signal receiving apparatus 1700 generates an initial image array signal by rearranging the target image array signal according to a preset remapping mode. For example, the remapping mode may be preset between the image signal receiving apparatus 1700 and the image signal transmitting apparatus 200 . As another example, the remapping mode may be obtained by additional information added to the image signal.

In operation 1850 , the image signal receiving apparatus 1700 generates an image by post-processing the initial image array signal, and outputs the generated image through the display 140 or stores it in the memory 1730 . For example, the ISP of the image signal receiving apparatus 1700 may generate an image by calculating values of the R channel, the G channel, and the B channel for each pixel of the image based on the initial image array signal.

19 is a flowchart of a method of generating an initial image array signal by removing a dummy element according to an example.

According to one aspect, the step 1840 described above with reference to FIG. 18 may include the following steps 1910 and 1920 .

In step 1910 , the image signal receiving apparatus 1700 includes between the first type of element and the second type when only a portion of two different types of elements is included in one horizontal line of the target image array signal. Remove old dummy elements. When there are a plurality of dummy elements, all of the plurality of dummy elements may be removed.

In operation 1920, the image signal receiving apparatus 1700 generates an initial image array signal by rearranging the target image array signal from which the dummy element is removed according to a preset remapping mode.

The embodiments described above may be implemented by a hardware component, a software component, and/or a combination of a hardware component and a software component. For example, the apparatus, methods and components described in the embodiments may include, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate (FPGA). array), a programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions, may be implemented using a general purpose computer or special purpose computer. The processing device may execute an operating system (OS) and a software application running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to execution of the software. For convenience of understanding, although one processing device is sometimes described as being used, one of ordinary skill in the art will recognize that the processing device includes a plurality of processing elements and/or a plurality of types of processing elements. It can be seen that may include For example, the processing device may include a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as parallel processors.

The software may comprise a computer program, code, instructions, or a combination of one or more thereof, which configures a processing device to operate as desired or is independently or collectively processed You can command the device. The software and/or data may be any kind of machine, component, physical device, virtual equipment, computer storage medium or device, to be interpreted by or to provide instructions or data to the processing device. , or may be permanently or temporarily embody in a transmitted signal wave. The software may be distributed over networked computer systems and stored or executed in a distributed manner. Software and data may be stored in a computer-readable recording medium.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination, and the program instructions recorded on the medium are specially designed and configured for the embodiment or may be known and available to those skilled in the art of computer software. may be Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic such as floppy disks. - includes magneto-optical media, and hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like.

The hardware devices described above may be configured to operate as one or a plurality of software modules to perform the operations of the embodiments, and vice versa.

As described above, although the embodiments have been described with reference to the limited drawings, a person skilled in the art may apply various technical modifications and variations based thereon. For example, the described techniques are performed in a different order than the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

100: image signal transmission system
110: image sensor
120: image signal transmission device
125: cable
130: image signal receiving device
140: display

Claims (19)

The image signal transmission method, performed by the image signal transmission device, comprises:
receiving an initial image array signal generated from an image sensor;
generating a target image array signal by rearranging the initial image array signal according to a preset re-mapping mode, wherein the target image array signal is a digital signal;
at least one for preventing interference generated between the first element and the second element, between the first element of the first kind and the second element of the second kind of one horizontal line of the target image array signal adding a dummy element of;
generating a target image array analog signal by converting the target image array signal to which the dummy element is added into an analog signal;
generating a vertical synchronization signal with respect to the target image array analog signal; and
Transmitting an image signal including the target image array analog signal and the vertical synchronization signal to an image signal receiving device
containing,
Image signal transmission method.
According to claim 1,
The image sensor consists of an array pattern including R (red) pixels, G (green) pixels, and B (blue) pixels,
The initial image array signal includes a plurality of R elements picked up by a plurality of R pixels, a plurality of G elements picked up by a plurality of G pixels, and a plurality of B elements picked up by a plurality of B pixels. including,
The generating of the target image array signal comprises:
generating the target image array signal by rearranging the initial image array signal according to the remapping mode to include only one type of element or two different types of elements in one horizontal line of the target image array signal
containing,
Image signal transmission method.
3. The method of claim 2,
The remapping mode is a mode for generating the target image array signal so that only a portion of the plurality of G elements is included in the one horizontal line,
Image signal transmission method.
3. The method of claim 2,
The remapping mode is a mode for generating the target image array signal so that only a portion of two different types of elements is included in the one horizontal line,
Image signal transmission method.
According to claim 1,
The dummy element is an element that duplicates an element of a preset area of the initial image array signal,
Image signal transmission method.
3. The method of claim 2,
The array pattern of the image sensor further comprises an infrared (infrared) pixel,
Image signal transmission method.
3. The method of claim 2,
wherein the array pattern of the image sensor includes W (white) pixels instead of the G pixels,
Image signal transmission method.
According to claim 1,
Transmitting the image signal to the image signal receiving device comprises:
generating the image signal to include the target image array analog signal and the vertical sync signal; and
transmitting the image signal to the image signal receiving device through a cable
containing,
Image signal transmission method.
A computer program stored in a computer-readable recording medium in combination with hardware to execute the method of any one of claims 1 to 8.
An image signal transmission device for performing the image signal transmission method,
a memory in which a program for transmitting an image signal is recorded; and
a processor that executes the program
including,
The program is
receiving an initial image array signal generated from an image sensor;
generating a target image array signal by rearranging the initial image array signal according to a preset re-mapping mode, wherein the target image array signal is a digital signal;
at least one for preventing interference generated between the first element and the second element, between the first element of the first kind and the second element of the second kind of one horizontal line of the target image array signal adding a dummy element of;
generating a target image array analog signal by converting the target image array signal to which the dummy element is added into an analog signal;
generating a vertical synchronization signal with respect to the target image array analog signal; and
Transmitting an image signal including the target image array analog signal and the vertical synchronization signal to an image signal receiving device
to do,
Image signal transmission device.
The image output method, performed by the image signal receiving device, includes:
receiving an image signal from an image signal transmission device, wherein the image signal includes a target image array analog signal corresponding to a target image array signal in which an initial image array signal generated from an image sensor is rearranged;
separating the target image array analog signal in the image signal based on a vertical synchronization signal of the image signal;
generating a target image array signal by converting the target image array analog signal into a digital signal;
disposed between a first element of a first kind and a second element of a second kind of one horizontal line of the target image array signal to prevent interference generated between the first element and the second element; removing the at least one dummy element;
generating an initial image array signal by rearranging the target image array signal from which the dummy element is removed according to a preset re-mapping mode; and
outputting or storing the initial image array signal
containing,
Image output method.
12. The method of claim 11,
The image sensor consists of an array pattern including R (red) pixels, G (green) pixels, and B (blue) pixels,
The initial image array signal includes a plurality of R elements picked up by a plurality of R pixels, a plurality of G elements picked up by a plurality of G pixels, and a plurality of B elements picked up by a plurality of B pixels. including,
The target image array signal includes only one type of element or two different types of elements in one horizontal line of the target image array signal,
Image output method.
13. The method of claim 12,
wherein the target image array signal includes only a portion of the plurality of G elements in the one horizontal line,
Image output method.
13. The method of claim 12,
The target image array signal includes only a portion of two different types of elements in the one horizontal line,
Image output method.
delete 13. The method of claim 12,
The array pattern of the image sensor further comprises an infrared (infrared) pixel,
Image output method.
13. The method of claim 12,
wherein the array pattern of the image sensor includes W (white) pixels instead of the G pixels,
Image output method.
A computer program stored in a computer-readable recording medium in combination with hardware to execute the method of any one of claims 11 to 14, 16 and 17.
An image signal receiving device performing a method of receiving an image,
a memory in which a program for receiving an image is recorded; and
a processor that executes the program
including,
The program is
receiving an image signal from an image signal transmission device, wherein the image signal includes a target image array analog signal corresponding to a target image array signal in which an initial image array signal generated from an image sensor is rearranged;
separating the target image array analog signal in the image signal based on a vertical synchronization signal of the image signal;
generating a target image array signal by converting the target image array analog signal into a digital signal;
between a first element of a first kind and a second element of a second kind of one horizontal line of the target image array signal to prevent interference generated between the first element and the second element; removing the at least one dummy element;
generating an initial image array signal by rearranging the target image array signal from which the dummy element is removed according to a preset re-mapping mode; and
outputting the initial image array signal
to do,
Image signal receiving device.

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