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Circuit for extracting field synchronizing signal from LVDS (Low Voltage Differential Signaling) signal and processing field synchronizing signal

A field synchronization signal and signal technology, which is applied in the direction of cathode ray tube indicators, instruments, static indicators, etc., can solve the problem of inability to extract field synchronization signals.

Inactive Publication Date: 2013-02-13
SHENZHEN NEW SUPER BRIGHT LCD DISPLAY
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a circuit for extracting and processing the field synchronization signal from the LVDS signal in view of the existing defect that the field synchronization signal cannot be extracted from the input signal with a variety of signals and necessary processing circuits

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  • Circuit for extracting field synchronizing signal from LVDS (Low Voltage Differential Signaling) signal and processing field synchronizing signal

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Embodiment Construction

[0012] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0013] An embodiment of the present invention provides a circuit for extracting a field synchronization signal from an LVDS (low voltage differential signaling, low voltage differential signaling) signal. A chip for LVDS signal / digital RGB signal, the signal input end of the chip for LVDS signal / digital RGB signal is connected to the LVDS signal through a resistor. In the LCD, the input diversity image signal becomes the only LVDS digital signal that can be received by the LCD panel after being converted by the image card. Using the LVDS signal / digital RGB signal chip, the field synchronous signal...

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Abstract

The invention relates to a circuit for extracting a field synchronizing signal from LVDS (Low Voltage Differential Signaling) signals and processing the field synchronizing signal. The circuit comprises a chip of an LVDS signal / digital RGB (Red, Green and Blue) signal, and the signal input end of the chip of the LVDS signal / digital RGB signal is connected with the LVDS signal output end of an image card through a resistor. The invention realizes that the field synchronizing signal is extracted from the signals with diverse input signals and processed into a required reference field synchronizing signal applied to a phase-lock frequency multiplier circuit.

Description

technical field [0001] The present invention relates to the field of display circuit technology, more specifically, to a circuit for extracting field synchronous signals from diverse signals input by LCD, a level conversion and pulse shaping circuit, and a switch control circuit for outputting phase-locked and multiplied signals , the invention converts the method of extracting field synchronization from diversity signals input by LCD to extracting from LVDS signals, thereby making it possible and practical to extract field synchronization signals. Background technique [0002] If the input signal of the display is a single VGA signal, the field synchronous signal can be directly taken out from the signal, and it can be used as the reference signal of the phase-locked circuit. But in most cases, the input signals of the display are diverse, so how to extract the required field synchronization signal from these diverse input signals becomes the key to the application of phase...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G5/00
Inventor 付万钧王雪芳刘金锐方木
Owner SHENZHEN NEW SUPER BRIGHT LCD DISPLAY