发明申请
US20100275037A1 Low-Power USB SuperSpeed Device with 8-bit Payload and 9-bit Frame NRZI Encoding for Replacing 8/10-bit Encoding
失效
具有8位有效载荷和9位帧NRZI编码的低功耗USB超速设备,用于替换8/10位编码
- 专利标题: Low-Power USB SuperSpeed Device with 8-bit Payload and 9-bit Frame NRZI Encoding for Replacing 8/10-bit Encoding
- 专利标题(中): 具有8位有效载荷和9位帧NRZI编码的低功耗USB超速设备,用于替换8/10位编码
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申请号: US12831160申请日: 2010-07-06
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公开(公告)号: US20100275037A1公开(公告)日: 2010-10-28
- 发明人: Charles C. Lee , Frank Yu , Abraham C. Ma , Jim Chin-Nan Ni , Shimon Chen
- 申请人: Charles C. Lee , Frank Yu , Abraham C. Ma , Jim Chin-Nan Ni , Shimon Chen
- 申请人地址: US CA San Jose
- 专利权人: SUPER TALENT ELECTRONICS INC.
- 当前专利权人: SUPER TALENT ELECTRONICS INC.
- 当前专利权人地址: US CA San Jose
- 主分类号: G06F13/36
- IPC分类号: G06F13/36 ; G06F13/10 ; G06F1/04 ; G06F13/28 ; H04L9/00 ; G06F1/32
摘要:
A Low-power flash-memory device uses a modified Universal-Serial-Bus (USB) 3.0 Protocol to reduce power consumption. The bit clock is slowed to reduce power and the need for pre-emphasis when USB cable lengths are short in applications. Data efficiency is improved by eliminating the 8/10-bit encoder and instead encoding sync and framing bytes as 9-bit symbols. Data bytes are expanded by bit stuffing only when a series of six ones occurs in the data. Header and payload data is transmitted as nearly 8-bits per data byte while framing is 9-bits per symbol, much less than the standard 10 bits per byte. Low-power link layers, physical layers, and scaled-down protocol layers are used. A card reader converter hub allows USB hosts to access low-power USB devices. Only one flash device is accessed, reducing power compared with standard USB broadcasting to multiple devices.