发明名称 |
Time delayed digital video system using concurrent recording and playback |
摘要 |
A broadcast recording and playback device employing a "circular buffer" which constantly records one or more incoming audio or video program signals and a microprocessor for accessing the memory to read a playback signal from the circular buffer to display programming material delayed from its receipt by a selectable delay interval. The circular buffer is implemented by a digital memory. Subsystem comprising the combination of a semiconductor RAM memory and a disk memory operated under the control of a microprocessor such that incoming signals are constantly recorded as received while, at the same time, delayed signals are being read from the memory subsystem at a different memory location selected by a microprocessor to provide a user-selected time delay. A plurality of input signal processors provides one or more programming signals to the memory subsystem in compressed digital form and a separate output signal processor converts the compressed digital information read from the memory into a form suitable for display. The audio/video buffer system operates under the control of a microprocessor which accepts commands from a remote command device or a connected host computer.
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申请公布号 |
US5371551(A) |
申请公布日期 |
1994.12.06 |
申请号 |
US19920968439 |
申请日期 |
1992.10.29 |
申请人 |
LOGAN, JAMES;GOESSLING, DANIEL |
发明人 |
LOGAN, JAMES;GOESSLING, DANIEL |
分类号 |
H04N5/44;H04N5/76;(IPC1-7):H04N5/14 |
主分类号 |
H04N5/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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