JP2006340238A - Coding device, its control method, program, and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To restrain upsizing of a coding device when the number of video signals which are simultaneously recordable increases or when a size of input image data is different. <P>SOLUTION: The coding device comprises a plurality of coding parts 202 which can encode motion image data of a predetermined picture size in real time, respectively, and a change control part 107 for changing the plurality of coding parts 202 based on a status of input motion image data 101. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an encoding / decoding technique in a digital video camera, a recorder, or the like using an optical disk, a semiconductor memory, a magnetic tape, or the like as a recording medium.

  In recent years, DVD recorders and HDD (hard disk) recorders are widely used as image recording apparatuses. In addition, HDD recorders that have two tuners and an encoding circuit and are capable of simultaneously recording video signals of two programs on the HDD have appeared.

  At that time, it is common to encode a video signal by the MPEG system. In this case, a video signal of one screen is divided into image blocks of a predetermined size called macroblocks, an encoding unit that performs motion estimation, discrete cosine transform, quantization, and variable length encoding on the macroblocks, It was necessary to prepare as many encoders as the number of programs that can be recorded simultaneously as shown in FIG. 9 together with a conversion unit that converts the output from the encoding unit into a transport stream or a program stream. .

When the resolution of each input signal is standard definition (SD) and high definition (HD), an SD encoder and an HD encoder are prepared. There must be. JP-A-10-234043 (Patent Document 1) discloses a technique related to such an encoder.
Japanese Patent Laid-Open No. 10-234043

  However, if the number of video signals that can be recorded simultaneously increases in the future, and the image sizes and formats become more diverse, it is necessary to add the same number of encoders as the video signals in the encoding device. There is a problem that the circuit becomes large-scale.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a large-scale encoding apparatus when the number of simultaneously recordable video signals increases or when the size of input image data is different. It is to suppress that.

  In order to solve the above-described problems and achieve the object, an encoding apparatus according to the present invention is composed of a plurality of encoding units each capable of encoding moving image data of a predetermined screen size in real time, and is input. A coding unit for coding the moving image data, and a configuration of the coding unit used for coding the moving image data in the coding unit based on the state of the input moving image data And changing means for changing.

  The encoding apparatus control method according to the present invention includes a plurality of encoding units each capable of encoding moving image data of a predetermined screen size in real time, and encodes the input moving image data. A method for controlling an encoding device including an encoding unit, wherein the encoding unit is used for encoding the moving image data in the encoding unit based on the state of the input moving image data. It is characterized by comprising a changing step for changing the configuration of the above.

  A program according to the present invention causes a computer to execute the above control method.

  A storage medium according to the present invention stores the above-mentioned program so as to be readable by a computer.

  According to the present invention, when the number of video signals that can be recorded simultaneously increases or when the size of input image data is different, it is possible to suppress an increase in the size of the encoding device.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIG. 1, FIG. 2, and FIG. 1 and 3 are overall system configuration diagrams of the encoding apparatus 100 according to the first embodiment, and FIG. 2 is a diagram illustrating a macroblock codec 202 described later.

  In the embodiment described below, a video encoded signal is generated by switching the configuration of the encoder according to the image size of the input signal. The encoding method is the MPEG method.

  In FIG. 1, 101 is a video input signal, and 102 is a buffer for temporarily storing the video input signal 101. Reference numeral 103 denotes an encoding unit, which includes M macroblock codecs 202. The macroblock codec 202 is a functional block that performs macroblock motion estimation, motion compensation, discrete cosine transform, quantization, and variable length coding as shown in FIG. Assume that encoding processing can be performed in time. A conversion unit 104 includes N converters 204. The converter 204 multiplexes the signal output from the macroblock codec 202 and converts it into a single stream, adds a header, and converts / inverts the MPEG transport stream and program stream. The block to perform. A buffer 105 temporarily stores the encoded video signals generated by the encoding unit 103 and the conversion unit 104. Reference numeral 106 denotes a video encoding output signal. Reference numeral 107 denotes a control unit. The combination of the macroblock codec 202 in the encoding unit 103, the combination of the converter 204 in the conversion unit 104, and the macroblock codec 202 and the converter according to the input signal to the control unit 107 It has a function to control the combination of 204.

  FIG. 3 is a diagram illustrating how the encoding unit 103 changes processing according to the image size of the input signal. For ease of explanation, it is assumed that one input signal is input to the encoding apparatus 100 and that the converter 204 outputs an MPEG transport stream.

  An input signal 101 is a video input signal, and a buffer 102 temporarily stores the video input signal 101. Reference numeral 103 denotes an encoding unit, and reference numeral 104 denotes a conversion unit. A buffer 105 temporarily stores the encoded video signals generated by the encoding unit 103 and the conversion unit 104. Reference numeral 106 denotes an encoded video output signal, and reference numeral 107 denotes a control unit. Reference numeral 108 denotes an encoder set by the control unit 107.

  When the image size information of the input signal is given to the control unit 107, the control unit 107 sets the combination of the macroblock codec 202 existing in the encoding unit 103 according to the image size. The control unit 107 is input based on the time for each macroblock codec 202 to process moving image data of a predetermined screen size and the number of macroblocks existing in one screen obtained from the screen size of the input signal. It calculates how many macroblock codecs 202 are required to encode a video signal within a predetermined time. That is, if the input video signal is in real time, for example, a video signal of 30 frames / second, all the video signals of one frame are processed within a 1/30 second period, that is, without performing frame thinning or pixel thinning processing. The number of macroblock codecs 202 necessary for encoding is calculated.

  Then, a combination of the calculated number of macroblock codecs 202 and a converter 204 for converting into a transport stream is generated as a new encoder 108. Assuming that one macroblock codec 202 can encode a video signal of 30 frames / second with a standard definition (SD) resolution, when the input image size is SD resolution, the encoder 108 has one macroblock. The codec 202 and one converter 204 are included. If the input image has a high definition (HD) resolution of 30 frames / second, that is, approximately four times the resolution of the SD resolution, the encoder 108 includes four macroblock codecs 202 and one converter 204. Composed. Furthermore, when the input image is smaller than the SD resolution, the macro block codec 202 includes one macro block codec 202 and one converter 204. However, the macro block codec 202 performs processing with less than the capability for processing the SD resolution.

  An input signal 101 to the encoding apparatus 100 of the present embodiment is stored in the buffer 102 and the frames are rearranged. The input signals rearranged in the encoding order are encoded by the macroblock codec 202 in the encoder 108 generated by the control unit 107. Signals encoded by each macroblock codec 202 are combined and header added by a converter 204 in the encoder 108, converted into a transport stream, and temporarily stored as an encoded signal in the buffer 105. Is output.

  Note that the encoding / decoding apparatus 100 of the present embodiment does not supply power to an encoding unit (macroblock codec) and a conversion unit (converter) that are not configured (not selected) by the control unit 107. The same applies to the second to sixth embodiments described below.

  As described above, in the encoding apparatus according to the present embodiment, a combination of a macroblock codec and a converter is used instead of preparing an encoder for each of input image signals having different image sizes such as standard definition and high definition. Since the input image signal having a different image size can be encoded by changing, it is possible to prevent the encoding apparatus from becoming large-scale.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIG. FIG. 4 is an overall system configuration diagram of the encoding device 400 according to the second embodiment. In the present embodiment, a video encoded signal is generated by switching the configuration of the encoder according to the number of input signals. The encoding method is the MPEG method.

  FIG. 4 shows an encoding circuit configuration when the input signal to the control unit 407 is the number of video input signals. For ease of explanation, it is assumed that the number of input signals is three, the screen size is all SD resolution, and the converter outputs an MPEG transport stream.

  In FIG. 4, 401a to 401c are video input signals, and 402a to 402c are buffers that temporarily store the video input signals 401a to 401c. Reference numeral 403 denotes an encoding unit, which includes M macroblock codecs 422. The macroblock codec 422 is a functional block that performs macroblock motion estimation, motion compensation, discrete cosine transform, quantization, and variable length coding, as described with reference to FIG. It is assumed that the encoding process can be performed within the time. A conversion unit 404 includes N converters 424. The converter 424 multiplexes the signal output from the macroblock codec 422 and converts it into a single stream, adds a header, and converts / inverts the MPEG transport stream and program stream. The block to perform. Reference numerals 405a to 405c denote buffers that temporarily store the encoded video signals generated by the encoding unit 403 and the conversion unit 404. Reference numerals 406a to 406c denote video encoded output signals. Reference numeral 407 denotes a control unit. The combination of the macroblock codec 422 in the encoding unit 403, the combination of the converter 424 in the conversion unit 404, and the macroblock codec 422 and the converter according to the input signal to the control unit 407 It has a function of controlling the combination of 424. Reference numerals 408, 409, and 410 denote encoders configured by the control unit 407.

  When the number of input signals is given to the control unit 407, the control unit 407 configures a combination of macroblock codecs 422 existing in the encoding unit 403 according to the number of input signals. Assuming that one macroblock codec 422 can encode a video signal of 30 frames / second with a standard definition (SD) resolution, the encoders 408 to 410 have one macroblock codec 422 and one converter 424. Consists of. If the input image has a high definition (HD) resolution of 30 frames / second, that is, about four times the resolution of the SD resolution, the encoders 408 to 410 have four macroblock codecs 422 and one converter. 424.

  Input signals 401a to 401c to the encoding apparatus 400 of the present embodiment are stored in the buffers 402a to 402c, respectively, and the frames are rearranged. The input signal 401 a is encoded by the encoder 408, the input signal 401 b is encoded by the encoder 409, and the input signal 401 c is encoded by each macroblock codec 422 in the encoder 410. The signals encoded by the encoders 408 to 410 are combined and added by a header 440 in the encoders 408 to 410, converted into a transport stream, and converted into buffers 405a to 405c as encoded signals. Temporarily saved and output.

  As described above, in the encoding apparatus according to the present embodiment, different signals are obtained by changing the combination of the macroblock codec and the converter for the number of signals of the input image signal, instead of preparing each encoder. Since a large number of input image signals can be encoded, it is possible to suppress an increase in the size of the encoding device.

  In the above-described embodiment, the number of input signals has been described as three systems, but the present invention can be similarly implemented even with any number of systems other than three systems.

(Third embodiment)
A third embodiment of the present invention will be described with reference to FIG. FIG. 5 is an overall system configuration diagram of an encoding apparatus 500 according to the third embodiment. In the present embodiment, a video encoded signal is generated by switching the configuration of the encoder according to the output format. The encoding method is the MPEG method.

  FIG. 5 shows an encoding circuit configuration when the input signal to the control unit 507 is the number of video input signals. For ease of explanation, it is assumed that the number of input signals is one, the screen size is all SD resolution, and the converter 524 outputs an MPEG transport stream and a program stream.

  In FIG. 5, reference numeral 501 denotes a video input signal, and reference numeral 502 denotes a buffer that temporarily stores the video input signal 501. Reference numeral 503 denotes an encoding unit, which includes M macroblock codecs 522. A conversion unit 504 includes N converters 524. Reference numeral 505 denotes a buffer that temporarily stores the encoded video signals generated by the encoding unit 503 and the conversion unit 504. Reference numeral 506 denotes a video encoded output signal. Reference numeral 507 denotes a control unit. A combination of the macroblock codec 522 in the encoding unit 503, a combination of the converter 524 in the conversion unit 504, and the macroblock codec 522 and the converter according to an input signal to the control unit 507. It has a function of controlling the combination of 524. Reference numeral 508 denotes an encoder configured by the control unit 507.

  When the number of input signals is given to the control unit 507, the control unit 507 configures a combination of converters 524 existing in the conversion unit 504 in accordance with the output format. Assuming that one macroblock codec 522 can encode a video signal of 30 frames / second with a standard definition (SD) resolution, the encoder 508 includes one macroblock codec 522 and two converters 524. Is done. When the input image has a high definition (HD) resolution of 30 frames / second, that is, when the resolution is about four times the SD resolution, the encoder 508 includes four macroblock codecs 522 and two converters 424. Composed. If two converters 424 are used, data streams of two types of output formats (transport stream and program stream) can be output.

  Input signals 501 to the encoding apparatus 500 of this embodiment are stored in the buffer 502, and the frames are rearranged. The input signal 501 is encoded by the macroblock codec 522 in the encoder 508. The signal encoded by the encoder 508 is combined and added with a header by a converter 524 in the encoder 508, and a transport stream and a program stream are output and temporarily stored in the buffer 505. Is output.

  In addition, what was demonstrated by 1st thru | or 3rd embodiment is only an example, and comprises the encoder according to the conditions of all or some combination of those among image size, the number of input signals, and output formats. Thus, a video encoded signal can be generated.

(Fourth embodiment)
A fourth embodiment of the present invention will be described with reference to FIG. FIG. 6 is an overall system configuration diagram of an encoding apparatus 600 according to the fourth embodiment. In the present embodiment, a video encoded signal is generated by switching the configuration of the encoder according to the image quality. The encoding method is the MPEG method.

  FIG. 6 shows an encoding circuit configuration that analyzes an input signal to the control unit 607 and outputs a high-quality video signal. For ease of explanation, it is assumed that the number of input signals is one, the image size is SD resolution, and the converter outputs an MPEG transport stream.

  In FIG. 6, reference numeral 601 denotes a video input signal, and reference numeral 602 denotes a buffer that temporarily stores the video input signal 601. Reference numeral 603 denotes an encoding unit, which includes M macroblock codecs 622. A conversion unit 604 includes N converters 624. Reference numeral 605 denotes a buffer that temporarily stores the encoded video signals generated by the encoding unit 603 and the conversion unit 604. Reference numeral 606 denotes a video encoded output signal. A control unit 607 is a combination of the macroblock codec 622 in the encoding unit 603 or a combination of the converter 624 in the conversion unit 604 according to an input signal to the control unit 607, and further, the macroblock codec 622 and the converter. It has a function to control the combination of 624. Reference numeral 608 denotes an encoder configured by the control unit 607. Reference numeral 609 denotes a deterioration determination block that extracts a high-quality signal from the output signal of the macroblock codec 622.

  As a result of analyzing the input signal given to the control unit 607, when trying to output a high-quality video signal, a combination of macroblock codecs 622 existing in the encoding unit 603 is configured as shown in FIG. In FIG. 6, four macroblock codecs 622 are configured, but each macroblock codec 622 (MBC1, MBC2, MBC3, MBC4) is given a different encoding parameter to encode an input image, and a degradation determination block By 609, the video signal with the least image quality degradation among them is output.

  Input signals 601 to the encoding apparatus 600 of the present embodiment are stored in the buffer 602, and the frames are rearranged. Input signal 601 is encoded by each macroblock codec 622 in encoder 608. As the signal encoded by each macroblock codec 622, the signal having the least image quality deterioration is selected and output in the deterioration determination block 609. The output signal is combined and header added by the converter 624 in the encoder 508, converted into a transport stream, temporarily stored in the buffer 605, and then output.

(Fifth embodiment)
A fifth embodiment of the present invention will be described with reference to FIG. FIG. 7 is an overall system configuration diagram of an encoding apparatus 700 according to the fifth embodiment. In the present embodiment, a video signal is generated by switching the configuration of an encoder according to transcoding. The encoding method is the MPEG method.

  FIG. 7 shows a circuit configuration in which an input signal to the control unit 707 is analyzed and transcoding (the encoded signal is once decoded and encoded again). For ease of explanation, it is assumed that the number of input signals is one video encoded signal, the image size is SD resolution, and the converter is an MPEG transport stream.

  In FIG. 7, reference numeral 701 denotes a video input signal, and reference numeral 702 denotes a buffer for temporarily storing the video input signal 701. Reference numeral 703 denotes an encoding unit, which includes M macroblock codecs 709a, 709b,. Reference numeral 704 denotes a conversion unit, which includes N converters 724. Reference numeral 705 denotes a buffer that temporarily stores the encoded video signals generated by the encoding unit 703 and the conversion unit 704. Reference numeral 706 denotes an encoded video output signal. Reference numeral 707 denotes a control unit, which is a combination of macroblock codecs 709a, 709b,... In the encoding unit 703, a combination of converters 724 in the conversion unit 704, and a macroblock according to an input signal to the control unit 707. Has a function of controlling the combination of the codecs 709a, 709b,. Reference numeral 708 denotes an encoder configured by the control unit 707.

  As a result of analyzing the input signal given to the control unit 707, when transcoding is performed, a combination of macroblock codecs 709a and 709b existing in the encoding unit 703 is configured as shown in FIG.

  In the present embodiment, the encoded video signal 701 is input to the encoding device 700 and stored in the buffer 702. The video encoded input signal 701 is decoded by the macroblock codec 709a in the encoder 708. Next, an encoded signal obtained by encoding the decoded signal with the macroblock codec 709b in the encoder 708 is output. The output signal is combined and added with a header by a converter 724 in the encoder 708, converted to a transport stream, temporarily stored in the buffer 705, and then recorded on a recording medium.

(Sixth embodiment)
A sixth embodiment of the present invention will be described with reference to FIG. FIG. 8 is an overall system configuration diagram of an encoding apparatus 700 according to the sixth embodiment. In the present embodiment, the video signal is generated by switching the configuration of the encoder according to the encoding method. The encoding method is the MPEG method.

  FIG. 8 shows a circuit configuration in which an input signal to the control unit 807 is analyzed and a video signal is encoded by the MPEG encoding method. For ease of explanation, it is assumed that the number of input signals is one video encoded signal, the image size is SD resolution, and the converter is an MPEG transport stream.

  In FIG. 8, 801 is a video input signal, and 802 is a buffer for temporarily storing the video input signal 801. Reference numeral 803 denotes an encoding unit, which includes M macroblock codecs 809, 810,. A conversion unit 804 includes N converters 824. Reference numeral 805 denotes a buffer that temporarily stores the encoded video signals generated by the encoding unit 803 and the conversion unit 804. Reference numeral 806 denotes a video encoding output signal. Reference numeral 807 denotes a control unit. A combination of a macroblock codec in the encoding unit 803, a combination of the converter 824 in the conversion unit 804, and a combination of the macroblock codec and the converter 824 in accordance with an input signal to the control unit 807. Has the ability to control combinations. Reference numeral 808 denotes an encoder configured by the control unit 807.

  As a result of analyzing the input signal given to the control unit 807, when MPEG encoding is performed, a combination of macroblock codecs 809 and 810 existing in the encoding unit 803 is configured as shown in FIG. At this time, in the MPEG system, blocks having a large processing amount are ranked, and a functional block having a large processing amount is performed by a macro block codec different from the macro block codec for encoding. Since the motion vector estimation process is large in the MPEG system, the motion vector estimation process is performed by a macroblock codec 810 that is different from the macroblock codec 809 that performs encoding. Even when the encoding method is other than MPEG, ranking is performed and processing is divided. From the above ranking, the macroblock codec 809 becomes a circuit that performs macroblock encoding, and the macroblock codec 810 becomes a circuit that performs only motion vector estimation in the encoding process.

  The input signal 801 to the encoding apparatus 800 of this embodiment is stored in the buffer 802, and the frames are rearranged. The input signal 801 is sent into the encoder 808, the macroblock codec 809 encodes the macroblock, and the macroblock codec 810 performs motion vector estimation of the image. In this way, motion vector estimation with a large amount of processing is performed by another macroblock codec in the MPEG encoding process. Using the motion vector calculated by the macroblock codec 810, the macroblock codec 809 performs discrete cosine transform, quantization, and variable length coding, and the converter 824 in the encoder 808 adds a header. The data is converted into a later transport stream, temporarily stored in the buffer 805, and then output.

  As a modification of the present embodiment, the motion vector estimation of the upper half of the image may be performed in the macroblock codec 809, and the motion vector estimation of the lower half of the image may be performed in parallel in the macroblock codec 810. In this way, motion vector estimation with a large processing amount is divided and performed in the MPEG encoding process. Using the motion vectors calculated by the macroblock codecs 809 and 810, the macroblock codec 809 performs discrete cosine transform, quantization, and variable length coding, and a header is added by the converter in the encoder 808. After that, it is converted into a transport stream, temporarily stored in the buffer 805, and then output.

  As described above, according to the first to sixth embodiments, the encoding unit that encodes image data of a predetermined size and the conversion unit that converts the output from the encoding unit into a predetermined format are provided. A plurality of encoding devices each having a control unit that configures an encoder by combining an encoding unit and a conversion unit, and video encoding by an encoder configured according to a signal input to the control unit A signal can be generated.

(Other embodiments)
In addition, an object of each embodiment is to supply a storage medium (or recording medium) on which a program code of software that realizes the functions of the above-described embodiments is recorded to a system or apparatus, and a computer (or CPU) of the system or apparatus Needless to say, this can also be achieved by reading and executing the program code stored in the storage medium. In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention. Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an operating system (OS) running on the computer based on the instruction of the program code. It goes without saying that a case where the function of the above-described embodiment is realized by performing part or all of the actual processing and the processing is included.

  Furthermore, after the program code read from the storage medium is written into a memory provided in a function expansion card inserted into the computer or a function expansion unit connected to the computer, the function is determined based on the instruction of the program code. It goes without saying that the CPU or the like provided in the expansion card or the function expansion unit performs part or all of the actual processing and the functions of the above-described embodiments are realized by the processing.

  When the present invention is applied to the above storage medium, the storage medium stores program codes corresponding to the procedure described above.

It is a whole system block diagram of the encoding apparatus in 1st Embodiment. It is a figure explaining a macroblock codec. It is a whole system block diagram of the encoding apparatus in 1st Embodiment. It is a whole system block diagram of the encoding apparatus in 2nd Embodiment. It is a whole system block diagram of the encoding apparatus in 3rd Embodiment. It is a whole system block diagram of the encoding apparatus in 4th Embodiment. It is a whole system block diagram of the encoding apparatus in 5th Embodiment. It is a whole system block diagram of the encoding apparatus in 6th Embodiment. It is a block diagram which shows the structural example of the conventional encoding apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Coding apparatus 101 Input signal 102 Buffer 103 Encoding part 104 Conversion part 105 Buffer 106 Output signal 107 Control part

Claims (22)

Each of which comprises a plurality of encoding units capable of encoding moving image data of a predetermined screen size in real time, and encoding means for encoding the input moving image data;
Based on the state of the input moving image data, changing means for changing the configuration of the encoding unit used for encoding the moving image data in the encoding unit;
An encoding apparatus comprising:   The encoding device according to claim 1, wherein the changing unit selects a part of the plurality of encoding units based on a state of the input moving image data.   A plurality of converting means for converting an output signal from the encoding means into a predetermined format; and the changing means is configured to select one of the plurality of encoding units based on the state of the input moving image data. The encoding apparatus according to claim 1, wherein a part of the encoding units is selected, and a combination of the selected encoding unit and the conversion unit is changed.   The said change means selects the encoding part used for encoding of the said moving image data based on the image size of the input said moving image data, The any one of Claim 1 thru | or 3 characterized by the above-mentioned. The encoding device according to item.   4. The change unit according to claim 1, wherein the changing unit selects an encoding unit used for encoding the moving image data based on the number of channels of the input moving image data. The encoding device according to item.   When the encoding device outputs encoded signals of a plurality of formats from one input moving image data, the changing unit is configured to change the plurality of the plurality of formats based on the state of the input moving image data. 4. The code according to claim 3, wherein a part of the encoding units is selected and the number of the conversion units corresponding to the number of the plurality of formats is selected and combined with each other. Device.   The changing unit further encodes the input moving image data by giving different encoding parameters to a predetermined number of encoding units among the plurality of encoding units, and as a result, the image quality is least deteriorated. The encoding apparatus according to claim 3, wherein an output signal from an encoding unit from which an encoded moving image signal is obtained is output to the conversion means.   At least a part of the plurality of encoding units has a decoding function of the encoded moving image data, and the changing unit further selects an encoding unit having the decoding function among the plurality of encoding units And decoding the moving image data input in the encoded state, and selecting a part of the plurality of encoding units to convert the decoded moving image data into the input moving image data. The encoding apparatus according to claim 3, wherein transcoding is performed by encoding in a different system.   The encoding device according to claim 3, wherein the changing unit combines the encoding unit and the converting unit corresponding to the encoding method of the encoding device.   The encoding apparatus according to claim 3, wherein the encoding apparatus stops power supply to the encoding unit and the conversion unit that are not selected by the changing unit. This is a method for controlling an encoding device that includes a plurality of encoding units each capable of encoding moving image data of a predetermined screen size in real time, and includes encoding means for encoding input moving image data. And
A code comprising: a changing step of changing a configuration of the encoding unit used for encoding the moving image data in the encoding unit based on the state of the input moving image data Control method.   12. The method of controlling an encoding apparatus according to claim 11, wherein in the changing step, a part of the plurality of encoding units is selected based on a state of the input moving image data.   The encoding device further includes a plurality of conversion means for converting an output signal from the encoding means into a predetermined format, and in the changing step, based on the state of the input moving image data, 12. The control of an encoding apparatus according to claim 11, wherein a part of the encoding units is selected, and a combination of the selected encoding unit and the conversion unit is changed. Method.   The encoding unit used for encoding the moving image data is selected based on the input image size of the moving image data in the changing step. A method for controlling the encoding device according to the item.   The encoding unit to be used for encoding the moving image data is selected in the changing step based on the number of channels of the input moving image data. A method for controlling the encoding device according to the item.   In the changing step, when the encoding device outputs encoded signals of a plurality of formats from one input moving image data, the plurality of formats are based on the state of the input moving image data. 14. The code according to claim 13, wherein a part of the encoding units is selected and the number of the conversion units corresponding to the number of the plurality of formats is selected and combined with each other. Control method.   Further, in the changing step, the input moving image data is encoded by giving different encoding parameters to a predetermined number of encoding units among the plurality of encoding units, and as a result, the image quality is least deteriorated. 14. The method of controlling an encoding apparatus according to claim 13, wherein an output signal from an encoding unit from which an encoded moving image signal is obtained is output to the conversion unit.   At least a part of the plurality of encoding units has a decoding function of the encoded moving image data, and the changing step further selects an encoding unit having the decoding function among the plurality of encoding units And decoding the moving image data input in the encoded state, and selecting a part of the plurality of encoding units to convert the decoded moving image data into the input moving image data. 14. The method of controlling an encoding apparatus according to claim 13, wherein transcoding is performed by encoding using a different method.   The method for controlling an encoding apparatus according to claim 13, wherein, in the changing step, the encoding unit corresponding to the encoding method of the encoding apparatus and the conversion unit are combined.   The method for controlling an encoding apparatus according to claim 13, wherein power supply to the encoding unit and conversion unit not selected in the changing step is stopped.   A program that causes a computer to execute the control method according to any one of claims 11 to 20.   A storage medium storing the program according to claim 21 in a computer-readable manner.

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