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USB error correction encoding/decoding device and method, USB transmission system and method

An error correction encoding and decoding device technology, applied in the field of USB encoding and decoding devices, can solve problems such as inability to meet, and achieve the effects of improving performance, improving transmission reliability, and eliminating random errors

Active Publication Date: 2009-07-08
VIA TECH INC
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AI Technical Summary

Problems solved by technology

Therefore, if the USB audio or video device has too many transmission errors, it cannot meet the requirements of high-end audio or video devices
[0004] Most of the current USB audio or video devices have not taken effective measures to reduce the probability of this error, so that it is impossible to avoid the transmission error caused by performance degradation

Method used

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  • USB error correction encoding/decoding device and method, USB transmission system and method
  • USB error correction encoding/decoding device and method, USB transmission system and method
  • USB error correction encoding/decoding device and method, USB transmission system and method

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Embodiment Construction

[0028] figure 1 It is a structural schematic diagram of an embodiment of the USB error correction encoding device of the present invention. The USB error correction encoding device 10 receives valid data, generates error correction coded data according to the valid data, and then sends the error correction coded data to a USB bus. In an embodiment, the USB error correction encoding device 10 may include an error correction encoding module 101 and a sending control module 102 . The error correction coding module 101 may further include an error correction code generation module 1011 and an error correction code arrangement module 1012 ; the sending control module 102 may also include a data packet encapsulation module 1021 . In one embodiment, the error correction code generation module 1011 receives the valid data and generates an error correction code (ErrorCorrecting Code). The error correction code arrangement module 1012 receives the valid data and the error correction c...

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Abstract

The invention provides a USB error correcting coding device, a USB error correction decoding device and a method, and a USB transmission system and a method. The USB error correcting coding device produces error correcting coding data according to effect data, and sends the error correcting coding data to a USB bus. The USB error correction decoding device receives the error correcting coding data from the USB bus, and conducts error checking to the error correcting coding data, and if the transmission is incorrect, the effect data is restored according to the error correcting coding data. The invention can noticeably reduce or eliminate the random errors produced in USB transmission process, and increase the transmission reliability between USB main control terminal and USB equipment terminal, thereby improving system performance.

Description

technical field [0001] The invention relates to a USB error correction codec device and method thereof, in particular to a USB codec device and method thereof which can implement error correction for USB transmission errors during USB isochronous transmission. Background technique [0002] The USB protocol specifies four transmission methods to meet the needs of various devices: control (Control) transmission, isochronous (isochronous) transmission, interrupt (interrupt) transmission and a large number of (bulk) transmission. Among them, isochronous transmission provides definite bandwidth and latency (latency), so it is usually used for streaming data transmission that requires strict real-time performance, or for real-time applications that require a constant data transmission rate. The real-time requirement of audio or video data is relatively high, so between a USB audio or video device and a USB host (USB Host), an isochronous transmission method is usually used to real...

Claims

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Application Information

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IPC IPC(8): G06F13/42
Inventor 李志强
Owner VIA TECH INC
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