WUSB (wireless universal serial bus) isochronous buffer management in endpoint

A buffer and endpoint technology, which is applied in the field of Wireless Universal Serial Bus (WUSB) protocol, can solve difficult and complex buffer management problems

Active Publication Date: 2012-09-26
STMICROELECTRONICS BEIJING R& D
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0006] Specifically, the problem with buffer management for Wireless USB or WUSB isochronous IN endpoints is that when designing or configuring a WUSB device or peripheral device one has to address the problem
This complicates buffer management and, as a result, it is difficult to use this model to support dynamic switching and configuration of DWA and other WUSB devices with continuously upgradeable IN endpoints

Method used

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  • WUSB (wireless universal serial bus) isochronous buffer management in endpoint
  • WUSB (wireless universal serial bus) isochronous buffer management in endpoint
  • WUSB (wireless universal serial bus) isochronous buffer management in endpoint

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Embodiment Construction

[0029] The present invention relates to a method and system for managing communication from a wireless universal serial bus (WUSB) device conforming to a wireless USB specification or protocol to a WUSB host. These WUSB devices may include, for example, a device cable adapter (DWA) or native WUSB devices. The method of the present invention generally involves providing improved buffer management in devices with synchronous IN endpoints that communicate with the host on a channel or pipe. More precisely, this method enables WUSB sync IN endpoints or devices with such endpoints to use less memory to buffer data compared to other buffering technologies (such as the buffer method shown in Figures 1 and 2). The buffer management method of the present invention also allows endpoints to encapsulate WUSB synchronization packets more flexibly and support other desired features with less complexity, such as dynamic switching and continuous upgradeability.

[0030] The buffer management me...

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Abstract

The invention relates to a buffer management method. The buffer management method comprises the following steps of: providing an isochronous IN endpoint in a WUSB device; providing a buffer for the IN endpoint in a memory of the WUSB device; providing a plurality of register blocks in the memory of the WUSB; receiving a write request of data sections at the IN endpoint; storing the data sections in the buffer; connecting one of the register blocks to certain continuous data sections; and determining additional packet information required by packets with WUSB isochronous formats for preparation in each connected register block to each packet required by a transmission window.

Description

[0001] This case is a divisional application with the application date of January 30, 2007 and the application number of 200710007913. 6 entitled "Buffer Management of Wireless USB Synchronization in the Terminal". Invention field [0002] The present invention generally relates to the wireless universal serial bus (WUSB) protocol, and to devices that implement the WUSB protocol (ie, WUSB devices), and more specifically, to management with isochronous IN endpoints (Endpoint) The buffer in the WUSB device is used to limit the amount of memory required by the end-point buffer and reduce the complexity of managing the end-point buffer while complying with the WUSB specification method for data packets. Background technique [0003] Universal Serial Bus (USB) communication has significantly improved the communication between a personal computer (PC) or other host device and peripheral devices such as storage devices, scanners, personal digital assistants (PDA), external Hard disks, ke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/42
Inventor 江森彭震宁
Owner STMICROELECTRONICS BEIJING R& D
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