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Differential data transmitting and receiving device and method with using 3 level volatge

A differential data and transmission system technology, applied in the direction of digital transmission system, transmission system, wired transmission system, etc., can solve problems such as multiple transmission lines

Active Publication Date: 2011-03-30
TLI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

That is, differential signaling has the disadvantage that more transmission lines are required for differential signaling compared to single-ended signaling

Method used

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  • Differential data transmitting and receiving device and method with using 3 level volatge
  • Differential data transmitting and receiving device and method with using 3 level volatge
  • Differential data transmitting and receiving device and method with using 3 level volatge

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Embodiment Construction

[0013] Reference will now be made to the drawings in which the same reference numerals are used in the different views to designate the same or similar parts. In the following description of the present invention, if it is determined that a detailed description of related well-known functions and constructions may make the gist of the present invention unclear, the detailed description will be omitted.

[0014] figure 1 is a diagram showing a differential data transmission system according to an embodiment of the present invention. refer to figure 1 , the differential data transmission system of the present invention transmits the first transmission data signal DIN1, the second transmission data signal DIN2 and the reference transmission data signal DINC through the first transmission line group PTL1 and the second transmission line group PTL2, and generates the first output data signal DQ1 , the second output data signal DQ2 and the reference output data signal DQC.

[001...

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Abstract

The invention relates to a differential data transmitting and receiving device and method with using 3 level voltage. The differential data transferring system and method uses three level voltages to simultaneously transfer three signals (for example, two data signals and one clock signal) across two transfer line sets (i.e., four transfer lines). Therefore, the differential data transferring method increases transferring efficiency by using fewer transfer lines. Also, according to the differential data transferring system and method, one of two transfer lines forming a transfer line set is controlled to a middle voltage level, while the other transfer line is controlled to either a high voltage or a low voltage. Accordingly, the voltage difference between the two transfer lines may be maintained at a constant amplitude. Additionally, the difference between first and second dividing voltages DC1 and DC2, which are used for generating a reference output data, is controlled to maintain a constant amplitude. Therefore, the differential data transferring system and method may provide improved operation reliability.

Description

technical field [0001] The present invention relates to a differential data transmission system, and more particularly to a differential data transmission system with 3 level voltages for improving data transmission efficiency. Background technique [0002] Differential signaling is widely used to transmit data. Differential signaling is a method for transmitting differential data. Differential data is transmitted as a pair of positive (+) and negative (-) complementary signals. Compared to single-ended signaling, differential signaling advantageously has low sensitivity to EMI (electromagnetic interference), high noise rejection, and can be used at high data transmission speeds. However, differential signaling requires two transmission lines for each differential signal sent. That is, differential signaling has the disadvantage that more transmission lines are required for differential signaling compared to single-ended signaling. Contents of the invention [0003] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/08
CPCH04B3/00H04L25/0272H04L25/028H04L25/14H04L25/49H03K19/00H03K19/0175
Inventor 南帐镇全龙源
Owner TLI
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