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Signal receiving device and its two-stage adaptive equalization method

A signal receiving device and equalization technology, which is applied in the shaping network of the transmitter/receiver, baseband system components, etc., can solve the problems of low error tolerance rate, reduced performance of the receiving device, and high operating frequency of the display port video interface.

Inactive Publication Date: 2018-03-06
MSTAR SEMICON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the new version of the DisplayPort video interface has a higher operating frequency (5.4 MHz) and a lower error tolerance rate. Using a fixed equalization strength may lead to a decrease in the performance of the receiving device

Method used

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  • Signal receiving device and its two-stage adaptive equalization method
  • Signal receiving device and its two-stage adaptive equalization method
  • Signal receiving device and its two-stage adaptive equalization method

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Embodiment Construction

[0030] A specific embodiment according to the present invention is a signal receiving device, the functional block diagram of which is shown in figure 1 . The signal receiving device 100 in this embodiment includes an equalization module 12 , a rough adjustment module 14 , a fine adjustment module 16 , a multiplexer 18 and a clock data recovery module 19 . The equalization module 12 is used for receiving an input signal and applying an equalization process to the input signal to generate an equalized signal. The equalization strength of the equalization process can be set to an initial value first. For example, the equalization intensity of the equalization process has 32 levels and is represented as level 0 to level 31, then the initial value may be but not limited to level 0. In other words, the equalization module 12 initially performs the equalization process with the initial equalization intensity.

[0031] Such as figure 1 As shown, the equalized signal output by the...

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Abstract

The invention provides a signal receiving device, which includes an equalization module, a rough adjustment module and a fine adjustment module. The equalization module is used to receive an input signal, and apply an equalization process to the input signal according to an equalization intensity to generate an equalized signal. The rough adjustment module adjusts the equalization strength according to the equalized signal until the equalized signal meets a preliminary convergence condition. After the processed signal meets the initial convergence condition, the fine-tuning module adjusts the equalization strength according to the equalized signal until the equalization strength meets a final convergence condition.

Description

technical field [0001] The present invention is related to the technique of applying an equalization procedure to a signal. Background technique [0002] The equalizer is a necessary component in the receiving end of many communication systems, which is used to compensate or eliminate the distortion / attenuation caused by the unideal channel factors in the transmission process of the signal. Only by properly equalizing the input signal (for example, selecting an appropriate equalization strength), the receiving end can correctly interpret and use the received data. Taking the DisplayPort (DP) video interface promoted by the Video Electronics Standards Association (VESA) as an example, its specification stipulates that the receiving end must complete the clock recovery (clock recovery) program. Balanced processing. [0003] The operating frequency of the early DisplayPort video interface was low (1.62 MHz or 2.7 MHz), and the receiving end usually only needed to use a fixed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03
Inventor 林柏年施俊仰李俊毅
Owner MSTAR SEMICON INC