Rewind radio and television
First Claim
1. A radio apparatus comprising:
- tuning circuitry for selecting a channel from an input rf spectrum;
an output for driving a speaker system with an audio presentation derived from the selected channel; and
a recording apparatus having a memory with capacity for recording a fixed time duration T of the audio presentation, and adapted to make an audio record sequentially in a circular fashion, such that when the memory capacity is filled, the device continues to record, overwriting the oldest recorded information, providing thereby, at any point in time, a stored copy of time duration T immediately preceding the point in time.
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Accused Products
Abstract
A radio or television apparatus has tuning circuitry for selecting a channel from an input spectrum, an output for presenting a presentation from a selected channel, a recording apparatus having a memory with capacity for recording a fixed time duration T of the selected presentation, and adapted to make an audio record sequentially in a circular fashion, such that when the memory capacity is filled, the device continues to record, overwriting the oldest recorded information, providing thereby, at any point in time, a stored copy of time duration T immediately preceding the point in time. This innovation provides limited rewind capability for real-time data streams. In alternative embodiments add-on devices are provided for existing radios and TVs.
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Citations
16 Claims
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1. A radio apparatus comprising:
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tuning circuitry for selecting a channel from an input rf spectrum;
an output for driving a speaker system with an audio presentation derived from the selected channel; and
a recording apparatus having a memory with capacity for recording a fixed time duration T of the audio presentation, and adapted to make an audio record sequentially in a circular fashion, such that when the memory capacity is filled, the device continues to record, overwriting the oldest recorded information, providing thereby, at any point in time, a stored copy of time duration T immediately preceding the point in time. - View Dependent Claims (2, 3, 4)
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5. An add-on recorder for a radio apparatus, comprising:
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an input for receiving an analog audio signal stream from a radio;
an output for driving a speaker system; and
a memory system with capacity for recording a fixed time duration T of received analog audio signals, and adapted to make an audio record in the memory sequentially in a circular fashion, such that when the memory capacity is filled, the system continues to record, overwriting the oldest recorded information, providing thereby, at any point in time, a stored copy of time duration T immediately preceding the point in time. - View Dependent Claims (6, 7, 8)
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9. A television apparatus comprising:
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tuning circuitry for selecting a channel from an input video spectrum;
an output for driving a television display with a video presentation derived from the selected channel; and
a recording apparatus having a memory with capacity for recording a fixed time duration T of the video presentation, and adapted to make a video record sequentially in a circular fashion, such that when the memory capacity is filled, the apparatus continues to record, overwriting the oldest recorded information, providing thereby, at any point in time, a stored copy of time duration T immediately preceding the point in time. - View Dependent Claims (10, 11, 12)
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13. An add-on recorder for a television apparatus, comprising:
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an input for receiving a video data stream;
an output for driving a television display system; and
a memory system with capacity for recording a fixed time duration T of the received video data stream, and adapted to make record in the memory sequentially in a circular fashion, such that when the memory capacity is filled, the system continues to record, overwriting the oldest recorded information, providing thereby, at any point in time, a stored copy of time duration T immediately preceding the point in time. - View Dependent Claims (14, 15, 16)
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Specification