SCART/UART interface multiplexing circuit and electronic equipment adopting same

A technology of interface multiplexing and circuit, which is applied in the electronic field, can solve the problems that cannot meet the requirements of light and thin electronic equipment, low cost, influence on the appearance of electronic equipment, and complicated manual welding operation, so as to increase convenience, reduce complexity, and reduce equipment. cost and effect

Inactive Publication Date: 2015-02-18
TIANJIN SAMSUNG ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of the HeadPhone / UART interface multiplexing circuit has the following disadvantages: 1. The circuit without the HeadPhone interface cannot be multiplexed with the URAT interface; 2. Additional wiring and placement of the interface are required on the PCB, which occupies PCB space and increases the cost of mass production; 3. The manual welding operation is complex and prone to defective products
If both a SCART interface and a UART interface are set on this type of electronic device, two interfaces must be set on the electronic device at the same time. cost requirements

Method used

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  • SCART/UART interface multiplexing circuit and electronic equipment adopting same
  • SCART/UART interface multiplexing circuit and electronic equipment adopting same
  • SCART/UART interface multiplexing circuit and electronic equipment adopting same

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Embodiment Construction

[0028] Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like numerals refer to like parts throughout. The embodiments are described below in order to explain the present invention by referring to the figures.

[0029] figure 2 A schematic structural diagram of a SCART / UART interface multiplexing circuit provided according to an exemplary embodiment of the present invention is shown. Such as figure 2 As shown, in the SCART / UART interface multiplexing circuit according to an exemplary embodiment of the present invention, it includes: a SCART interface unit 1 for transmitting audio and video data or serial data; a transmission mode judging unit 3 for judging the main chip 4 Selected data transmission mode, the data transmission mode includes audio and video data transmission mode and serial data transmission mode; multiplexing control unit 2, used to control the SCART interfac...

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Abstract

The invention provides an SCART / UART interface multiplexing circuit and electronic equipment adopting the same. The SCART / UART interface multiplexing circuit comprises an SCART interface unit, a transmitting mode judging unit, and a multiplexing control unit, wherein the SCART interface unit is used for transmitting audio-video data or serial data; the transmitting mode judging unit is used for judging the data transmitting mode selected by a main chip; the data transmitting modes comprise an audio-video data transmitting mode and a serial data transmitting mode; the multiplexing control unit is used for controlling the SCART interface unit to transmit the audio-video data when the audio-video data transmitting mode is selected, and controlling the SCART interface unit to transmit serial data when the serial data transmitting mode is selected. According to the invention, the SCART interface and the UART interface can be multiplexed; interface quantity is reduced, so as to meet requirements of lighting and thinning of electronic equipment, and beautify the appearance of products.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a SCART / UART interface multiplexing circuit and electronic equipment using the circuit. Background technique [0002] With the development of information technology, the UART (Universal Asynchronous Receiver / Transmitter) protocol has been widely used in the development and debugging of electronic equipment. Electronic equipment is often equipped with a UART interface for the connection of UART data lines. Thus, data transmission between the electronic device and the UART data line is realized. The UART data line includes at least a RXT line and a TXD line, the RXT line is used for receiving serial data, and the TXD is used for sending serial data. [0003] At present, for the embedded development process, in order to carry out serial port communication, the dedicated HeadPhone interface and UART interface are usually configured on the motherboard for multiplexing. The specif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40
CPCG06F13/385
Inventor 颜利民
Owner TIANJIN SAMSUNG ELECTRONICS CO LTD
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