Invention Publication
- Patent Title: SINGLE OSCILLATOR COMPRESSED DIGITAL INFORMATION RECEIVER
- Patent Title (中): 接收器与单个振荡器压缩的数字信息
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Application No.: EP96909641Application Date: 1996-03-15
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Publication No.: EP0815676A4Publication Date: 2000-07-05
- Inventor: STROLLE CHRISTOPHER HUGH , JAFFE STEVEN TODD , LYONS PAUL WALLACE
- Applicant: SARNOFF CORP
- Assignee: SARNOFF CORP
- Current Assignee: SARNOFF CORP
- Priority: US40621695 1995-03-15
- Main IPC: H04L27/38
- IPC: H04L27/38 ; H04L7/00 ; H04L7/02 ; H04L7/033 ; H04N21/242 ; H04N21/43 ; H04N21/438 ; H04L27/06 ; H03K9/00 ; H04L27/14 ; H04L27/22 ; H04N5/00 ; H04N5/44 ; H04N7/24 ; H04N7/62
Abstract:
A digital information receiver (100) having a single oscillator (118) providing a clock signal to the receiver circuitry. The receiver (100) contains, in addition to the oscillator (118), an input signal processor (102), a symbol time loop, a demodulator (106), a transport decoder (108), a transport timing loop, one or more applications decoders (102) and a presentation device (116). The input signal processor (102) digitizes an input signal and resamples the input signal using an interpolator (204) such that the input signal is optimally sampled. The resampling is controlled by a symbol timing loop. In a first embodiment, the transport timing loop controls the frequency of the oscillator (118) using transmitter timing information contained in the received signal. In the second embodiment, the oscillator (1202) is a free running oscillator and the transport timing loop controls a numerically controlled counter (1002) that, in turn, controls presentation timing of the information carried by the information in the input signal. After the input signal is decoded, an output interpolator (1204) generates continuous signals from somewhat bursty signals for utilization by the presentation device.
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