SCART interface control circuit and electronic equipment using same

Abstract

The invention relates to electronic equipment using an SCART interface control circuit, which can control the video output format of an SCART interface. The electronic equipment comprises a processing chip, the SCART interface and a control circuit; the processing chip is used for sending at least two groups of voltage signals to the control circuit; the control circuit comprises a first switching circuit, a second switching circuit and a voltage dividing circuit, wherein, the first switching circuit and the second switching circuit are respectively connected with the processing chip so as to respectively receive the two groups of voltage signals sent by the processing chip and control the voltage dividing circuit to output different voltage controlling signals according to the two groups of voltage signals; the voltage dividing circuit includes a third resistor, a fourth resistor and a fifth resistor in serial connection; and the SCART interface is connected with the control circuit and is used for adjusting the video output format according to different control signals output by the control circuit. The electronic equipment controls the video output format of the SCART interface according to the voltage signals sent by the processing chip, is easy to operate and can omit the use of other control chips or devices.

Description

technical field

[0001] The invention relates to network communication, in particular to a SCART interface control circuit and electronic equipment using it. Background technique

[0002] At present, video communication terminal equipment that conforms to European standards, such as: TVs, set-top boxes, etc., are equipped with SCART interfaces. According to the definition of SCART interfaces, the video output mode can be controlled by the range of input voltage. For example, when the input voltage of the communication terminal equipment is 0-2 volts, its video output mode is TV mode, and there is no signal transmission at this time; when the input voltage of the communication terminal equipment is 4.5-7 volts, its video output mode The output mode is 16:9 mode; when the input voltage of the communication terminal equipment is 9.5-12 volts, its video output mode is 4:3 mode. Therefore, when the TV receives video information through the SCART interface, its video output mode n...

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