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receiver

A receiver and signal receiving technology, applied in the direction of impedance network, electrical components, baseband system components, etc., can solve problems such as difficult to achieve terminal impedance matching resistance R

Active Publication Date: 2017-06-30
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in practical applications, the impedance value of a single terminal impedance matching resistor R will drift with many variables, so it is difficult to achieve a terminal impedance matching resistor R with an accurately matched impedance value

Method used

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Embodiment Construction

[0031] Please refer to figure 2 , figure 2 It is a schematic diagram of a receiver 20 according to an embodiment of the present invention. Such as figure 2 As shown, the receiver 20 is coupled to an external signal generator 22 through a channel SCH, and includes a variable terminal impedance unit 202 and a signal detection and impedance control unit 204 . To put it simply, when the receiver 20 intends to receive the signal from the external signal generator 22 through the channel SCH, the receiver 20 will first receive the external calibration signal CAL from the external signal generator 22 for calibration, and at this time it is coupled to the channel SCH The variable terminal impedance unit 202 first performs impedance matching with the current terminal impedance value corresponding to the channel SCH, and then the signal detection and impedance control unit 204 detects the received external correction signal under the current terminal impedance value corresponding to...

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Abstract

The invention discloses a receiver, which can increase the accuracy of signal reception. The receiver includes a variable termination impedance unit coupled to at least one channel for impedance matching with at least one termination impedance value corresponding to the at least one channel; and a signal detection and impedance control unit for Detecting at least one external calibration signal corresponding to the at least one channel from at least one external signal generator, and adjusting the at least one terminal impedance value accordingly.

Description

technical field [0001] The invention relates to a receiver, in particular to a receiver which can adjust the terminal impedance value according to the received external correction signal for correction, so as to increase the accuracy of signal reception. Background technique [0002] Generally speaking, in the interface circuit receiver, the terminal impedance matching resistor is required to maintain the integrity of signal reception, that is, when the terminal impedance matching resistor of the receiver is accurately matched with the transmitter, the accuracy of signal reception can be increased. [0003] Please refer to figure 1 , figure 1 It is a schematic diagram of a known interface circuit receiver 10 . Such as figure 1 As shown, in most applications, when the interface circuit receiver 10 receives differential signals from the transmitter through the channels CH1 and CH2, a terminal impedance matching resistor R needs to be set on the channels CH1 and CH2 to achie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H7/38H04L25/02
Inventor 吴泽宏
Owner NOVATEK MICROELECTRONICS CORP