发明授权
US07239650B2 Apparatus and method for receiving upstream data transmissions from multiple remote transmitters
有权
用于从多个远程发射机接收上行数据传输的设备和方法
- 专利标题: Apparatus and method for receiving upstream data transmissions from multiple remote transmitters
- 专利标题(中): 用于从多个远程发射机接收上行数据传输的设备和方法
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申请号: US09755339申请日: 2001-01-03
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公开(公告)号: US07239650B2公开(公告)日: 2007-07-03
- 发明人: Selim Shlomo Rakib , Yehuda Azenkot
- 申请人: Selim Shlomo Rakib , Yehuda Azenkot
- 申请人地址: US CA Santa Clara
- 专利权人: Terayon Communication Systems, Inc.
- 当前专利权人: Terayon Communication Systems, Inc.
- 当前专利权人地址: US CA Santa Clara
- 代理机构: Brown Raysman & Steiner LLP
- 代理商 Thelen Reid Brown
- 主分类号: H04J1/00
- IPC分类号: H04J1/00 ; H04J3/06
摘要:
A system for bidirectional communication of digital data between a central unit and a remote unit wherein the need for tracking loops in the central unit has been eliminated. The central unit transmitter generates a master carrier and a master clock signal which are used to transmit downstream data to the remote units. The remote units recover the master carrier and master clock and synchronize local oscillators in each remote unit to these master carrier and master clock signals to generate reference carrier and clock signals for use by the remote unit receiver. These reference carrier and clock signals are also used by the remote unit transmitters to transmit upstream data to the central unit. The central unit receiver detects the phase difference between the reference carrier and clock signals from the remote units periodically and adjusts the phase of the master carrier and master clock signals for use by the central unit receiver to receive the upstream data.
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