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Signal transmission apparatus and method

A signal transmission and signal technology, applied in transmission systems, digital transmission systems, line transmission components, etc., can solve problems such as huge man-hours

Inactive Publication Date: 2010-06-23
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, a huge amount of man-hours are required for shipment of mass-produced devices

Method used

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  • Signal transmission apparatus and method
  • Signal transmission apparatus and method
  • Signal transmission apparatus and method

Examples

Experimental program
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Embodiment Construction

[0045] figure 1 It is a configuration diagram showing an example of the signal transmission device of the present invention, and shows the configuration of an electronic device such as a personal computer or a server to which the present invention is applied.

[0046] For example, a personal computer (that is, a signal transmission device) has one or more printed circuit boards 1 and a connector 6 that connects these printed circuit boards 1 . One or more LSIs 2 (that is, one semiconductor device, semiconductor chip, or integrated circuit) are mounted on each printed circuit board 1 . Each LSI 2 is composed of a transmission unit 3 , a reception unit 4 , and a signal processing unit 5 .

[0047] When classifying each LSI 2, one LSI 2 is represented as "2A" and the other LSI 2 is represented as "2B". The same applies to the transmission unit 3 and the like.

[0048] The signal processing unit 5 executes predetermined processing, generates a predetermined signal, and outputs...

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PUM

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Abstract

A signal transmission apparatus has a sine wave output part (133) for outputting sine waves to a transmission path (8), network analyzers (141,161) for analyzing signals on the transmission path (8), an S parameter measuring part (191) for measuring an S parameter based on the analysis, a selecting part (192) for selecting a plurality of combinations of amplitude, enhancement characteristics and equalization characteristics based on the S parameter, measuring parts (162,163) for measuring BER or eye opening of the transmission path (8) with respect to the plurality of combinations, and a setting part (193) for extracting one of the combinations based on the measurement to set the amplitude, the enhancement characteristics and the equalization characteristics in a transmission part (3) anda reception part (4).

Description

technical field [0001] The present invention relates to a signal transmission device and method, in particular to a signal transmission device and method for optimizing circuit characteristics in a transceiver circuit for high-speed serial transmission, wherein, in high-speed serial transmission, the loss and Jitter becomes a problem. Background technique [0002] In electronic devices such as personal computers or servers, electrical interfaces are transitioning from parallel to serial interfaces. In the serial interface, since a high frequency band is used, it is necessary to obtain a stable transmission waveform. Therefore, it is necessary to properly detect transmission path loss, jitter, noise, characteristic variation due to manufacturing (manufacturing variation), and the like, and to control the communication circuit based on the detection. [0003] Furthermore, a pulse recognition degradation detection method has been proposed in which a communication device detec...

Claims

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Application Information

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IPC IPC(8): H04B3/04H04L25/03
CPCH04L25/03878
Inventor 须和田诚
Owner FUJITSU LTD