Clock and data codependent high transmission rate interface

A high transmission and interface technology, applied in the direction of TV, instruments, electrical components, etc., can solve the problems of clock signal phase disorder, high operating frequency, misjudgment of clock signal, etc., to reduce load and power loss, high transmission efficiency, increase bit rate effect

Inactive Publication Date: 2009-02-11
NOVATEK MICROELECTRONICS CORP
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Problems solved by technology

However, in order to intercept the information of the clock signal from the detection of the amplitude, the transmission interface must add two additional comparators, and only compare the single-point voltage. If the signal has overshooting or undershooting, The effect of noise immunity is not good, which leads to misjudgment of the clock signal, which makes the phase of the clock signal disordered, and wrong image data is intercepted
In addition, the voltage of image data has only two levels. When the resolution is high, it will easily cause errors due to the high operating frequency.

Method used

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  • Clock and data codependent high transmission rate interface
  • Clock and data codependent high transmission rate interface
  • Clock and data codependent high transmission rate interface

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Embodiment Construction

[0046] Based on the above-mentioned known transmission interfaces, no matter the data transmission of single-pair wires or multi-pair wires, only two voltage levels are used to indicate that a bit is 1 or 0. However, as the difficulty of operating frequency system design is increasing day by day, the design of multiple voltage levels will effectively reduce the difficulty of system design due to frequency reduction. However, the traditional multi-voltage level design including a clock signal requires a lengthy synchronization time. Moreover, the display panel contains many driver chips. How to make all the driver chips have similar synchronization characteristics, so that the image data of the entire video transmission line can be output synchronously, will greatly increase the complexity of the traditional multi-voltage level design. , and less suitable for large-size display panel applications.

[0047] The present invention proposes an achievable high-speed transmission in...

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Abstract

The invention discloses a clock-data-coexisted high transmission speed interface, which can be applied to a liquid crystal display. The high transmission speed interface comprises a clock detecting circuit and a data obtaining circuit, wherein the data obtaining circuit is coupled to the clock detecting circuit. The clock detecting circuit is used for receiving data flow and detecting a specific data format in the data flow, so as to retrieve clock information from the data flow. The data obtaining circuit is used for sampling the data flow according to the clock information and obtaining video information according to a sampling result.

Description

technical field [0001] The present invention relates to a high transmission rate interface, in particular to a high transmission rate interface applied to a display panel (intra-panel) where clocks and data coexist. Background technique [0002] In recent years, the display panel technology has become more and more mature, but with the demand of consumers, the size of the display panel is getting bigger and bigger, and the resolution is getting higher and higher. However, when the resolution and size of the display panel increase, it will lead to The operating frequency inside the panel is getting higher and higher. [0003] Because the traditional intra-panel interface requires multiple pairs of transmission lines, it is difficult to make each transmission line have similar electrical properties in a high-frequency environment; therefore, it is not easy for the receiving end to make an effective response to this. Due to the correction mechanism, the bit error rate (bit err...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26G09G3/36
Inventor 黄俊乂
Owner NOVATEK MICROELECTRONICS CORP
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