KR20080067213A - How to change the external device of the television - Google Patents

Abstract

A method for changing an auxiliary device for the television is provided to switch to all connected external devices per predetermined time and switch to the external devices connected with a specific scart jack when input signals are inputted simultaneously from the external devices so as to check screens of the external devices connected with the scart jacks at once. A method for changing an auxiliary device for the television comprises the steps of; setting a preference for a plurality of scart jacks(S30); judging input states of low speed switching signals of first and second scart jacks(S31); switching to the second scart jack whose preference is low(S33) when two low speed switching signals are in high levels(S32); displaying a signal inputted from an external device connected with the second scart jack for 2 to 3 seconds(S34); displaying a signal inputted from the external device connected with the first scart jack(S35); displaying the external device connected with the first scart jack(S37) when only a low speed switching signal of the first scart jack is in a high level(S36); and displaying the external device connected with the second scart jack(S39) when only a low speed switching signal of the second scart jack is in a high level(S38).

Description

How to switch external equipment of TV {METHOD FOR CHANGING AUXILIARY DEVICE IN TELEVISION}

1 is a block diagram showing a television with a general skajack.

2 is a flowchart illustrating a method of switching an external device of a general television.

3 is a flowchart illustrating a method of switching an external device of a television according to an embodiment of the present invention.

   -Explanation of symbols for the main parts of the drawings-

1: Skaterjack

2: Image detector

3: switching unit

4: processor

5: main IC

6: CRT drive unit

The present invention relates to a method for switching an external device of a television. More particularly, when an input signal is input simultaneously from a plurality of external devices connected to a plurality of scart jacks provided in a television, all connected external devices are switched for a predetermined time. The present invention relates to a method of switching an external device of a television to be displayed and then switched to an external device connected to a specific skat jack.

Recently, as consumers' tastes have become more advanced, the use of TV as a general media device rather than a simple broadcast receiver by connecting audio or other external devices to the television is becoming more common. A 21-pin SCART jack for receiving signals from an external device and a separate socket for connecting the same are also commercialized on the case back of the main body.

1 is a block diagram showing a television with a general skajack.

As shown here, the scart jack 1 has an input port RGB for inputting respective R (Red), G (Green), and B (Blue) signals supplied from the outside, and a composite video signal (Composite). In addition to the input port (CV) for inputting the input, the low speed switching signal (S) for the functional switching (Function Switching) and the high speed switching signal (F) for the blanking switching (Input) It is comprised with the ports S and F.

In addition, a video detector 2 for detecting a video intermediate frequency signal PIF of a broadcast signal and outputting a composite video signal, and a composite video switched according to a predetermined switching number SW and input from the scart jack 1. A switching unit 3 for selectively inputting the signal CV and the R / G / B signal and the composite video signal output from the image detector 2, and a low speed switching signal S input through the scart jack 1; Processor 4 for switching control of the switching unit 3 and a composite video signal CV or R / G / B signal inputted through the switching unit 3 to generate an image screen on the CRT. It comprises a main IC (5) for outputting the R / G / / B signal.

At this time, in the processor 4, when the low level switching signal S of the high level, for example, 9.5-12V is input from the scart jack 3, the processor 4 electrically couples the scart jack 1 and the main IC 5 to each other. In order to control the switching unit 3, the main IC 5 processes the composite video signal CV inputted through the switching unit 3 in a normal operation mode, and operates the high speed from the scart jack 1. When the switching signal F is input, the R / G / B input is processed.

Therefore, in the case of inputting a video signal to a television in a normal case, when a composite video signal is input, a low-speed switching signal S and a R / G / B signal are simultaneously input together with the composite video signal. The low speed switching signal S and the high speed switching signal F are input simultaneously.

On the other hand, as more and more types of external devices (VCR, DVD, satellite broadcast receivers, etc.) can be connected to the TV these days, there are several scart jacks for connecting external devices. After that, the signal line was manually switched according to the type of external device to be operated.

This is inconvenient to manually operate according to the operation of the external device, so it is improved to detect any external device and to switch the signal line automatically, and when several external devices are operated at the same time, External devices are first selected to switch signal lines.

2 is a flowchart illustrating a method of switching an external device of a general television.

First, input of a plurality of scart jacks formed in the television (S20).

That is, it is determined whether the low speed switching signal is high level from an external device connected to the skat jack.

At this time, when the low speed switching signal of the first skat jack is at a high level (S21), the input signal input from an external device connected to the first skat jack is displayed by switching to the first skat jack (S22).

On the other hand, when the low speed switching signal of the first skat jack is low level and the low speed switching signal of the second skat jack is high level (S23), the input is switched from the external device connected to the second skat jack to switch to the second skat jack. The signal is displayed (S24).

If the low speed switching signals of the first and second skat jacks are both at high level, the low speed switching signal of the first skat jack is switched to the first scat jack, so if the high level is at the same time, the first skat jack is at the same time. Only switched to.

Therefore, in such a case, there is a problem in that the content displayed from the external device connected to the second jack jack is manually switched to the second jack jack.

The present invention has been made to solve the above problems, and an object of the present invention is to schedule all connected external devices when input signals are simultaneously input from a plurality of external devices connected to a plurality of skat jacks provided in a television. The present invention provides a method of switching an external device of a television to switch the display to an external device connected to a specific skat jack after switching by time.

In order to achieve the above object, the present invention provides a method for switching an external device of a television having a plurality of scart jacks, the method comprising: setting priorities for the plurality of scart jacks, and determining input signals of the plurality of scart jacks. And if the input signal of the plurality of scart jacks is a high level or more as a result of the determination, sequentially switching from the low priority scart jacks to maintain a predetermined time, and then switching to the order of high priority. If the input signal of any one of the skat jack is only at the high level, it comprises the step of switching to the corresponding skat jack.

In the present invention, the input signal is characterized in that the low speed switching signal.

In the present invention, a predetermined time is characterized in that 2 to 3 seconds.

According to the present invention, when a signal is simultaneously input from a plurality of external devices connected to a plurality of scart jacks, the priority is set for the plurality of scart jacks, and then sequentially switched from the low priority scart jack for a predetermined time. Display the video signal input from an external device to check the status of all external devices.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings, and the same parts as in the prior art use the same reference numerals and names. In addition, the present embodiment is not intended to limit the scope of the present invention, but is presented by way of example only and those skilled in the art will be capable of many modifications within the technical spirit of the present invention.

3 is a flowchart illustrating a method of switching an external device of a television according to an embodiment of the present invention.

First, priority is set for a plurality of scart jacks provided in the television (S30).

For example, in the present embodiment, when the first to second skate jacks are provided, the first skate jack has a higher priority than the second skate jack.

In this way, after setting priorities for the first to second skat jacks, the input state of the low speed switching signal of the first to second skat jacks is determined (S31).

In this case, when the low speed switching signal of both the first and second skat jacks is at a high level (S32), first, the switch is switched to the second priority scatter jack having a lower priority (S33). After displaying a signal input from an external device connected to the jack (S34), the signal is input from an external device connected to the first jack jack by switching to the first jack jack having a higher priority than the second jack jack (S34). S35).

On the other hand, if only the low speed switching signal of the first skat jack is high level by determining the input state of the low speed switching signal of the first to second skat jack (S36), it is switched to the first skat jack and connected to the first skat jack. The external device is displayed (S37).

However, when only the low speed switching signal of the second jack jack is at a high level (S38), the device switches to the second jack jack and displays an external device connected to the second jack jack (S39).

In the present embodiment, a case in which two scart jacks are provided is described as an example. However, even if there are three or more scart jacks, priority is sequentially given by switching from a lower priority scart jack even when the low speed switching signals of two or more scart jacks are high. Switches to the high skajack and displays it.

As described above, according to the present invention, when an input signal is input simultaneously from a plurality of external devices connected to a plurality of scart jacks of a television, all connected external devices are displayed for a predetermined time and then connected to a specific scart jack. By switching to the display device, it is possible to check the screens of external devices connected to all the scart jacks at once.

Claims (3)

In the method of switching an external device of a television having a plurality of scart jacks, Setting priorities for the plurality of scart jacks; Determining input signals of the plurality of scart jacks; If the input signal of the plurality of scart jacks is a high level or more as a result of the determination, switching sequentially from the low priority scart jack, maintaining a predetermined time, and then switching to the order of high priority; If the input signal of any one of the plurality of scart jacks is at a high level, switching to the corresponding scart jack External device switching method of the television, characterized in that made. The method of claim 1, wherein the input signal is a low speed switching signal. The method of claim 1, wherein the predetermined time is 2-3 seconds.

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