METHOD AND APPARATUS FOR EMPLOYING STORED CONTENT AT RECEIVERS TO IMPROVE EFFICIENCY OF BROADCAST SYSTEM BANDWIDTH USE
First Claim
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1. An apparatus for generating an output signal from a broadcast signal in a digital broadcast system comprising:
- a memory device for storing predefined content segments;
a receiver for receiving said broadcast signal, said broadcast signal comprising content segments and control data provided among said content segments to indicate when said predefined content segments are to be inserted in said output signal by said apparatus, said receiver being operable to extract said content segments and said control data from said broadcast signal;
an output device for playing back said output signal;
a processing device configured to receive said control data from said receiver and to generate a control signal used by said memory device to retrieve selected ones of said predefined content segments in accordance with said control data; and
a multiplexer configured to receive as inputs said control signal generated by said processing device, said content segments from said receiver and said selected predefined content segments and to generate said output signal using said content segments received by said receiver and inserting said predefined content segments among said content segments in accordance with said control data.
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Abstract
The invention relates generally to a receiver unit in a digital broadcast system for receiving a broadcast signal comprising content segments and control data, and generating an output signal using the content segments and previously stored content segments. The previously stored content segments are retrieved from a local memory device using the control data and inserted among the received content segments.
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Citations
19 Claims
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1. An apparatus for generating an output signal from a broadcast signal in a digital broadcast system comprising:
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a memory device for storing predefined content segments;
a receiver for receiving said broadcast signal, said broadcast signal comprising content segments and control data provided among said content segments to indicate when said predefined content segments are to be inserted in said output signal by said apparatus, said receiver being operable to extract said content segments and said control data from said broadcast signal;
an output device for playing back said output signal;
a processing device configured to receive said control data from said receiver and to generate a control signal used by said memory device to retrieve selected ones of said predefined content segments in accordance with said control data; and
a multiplexer configured to receive as inputs said control signal generated by said processing device, said content segments from said receiver and said selected predefined content segments and to generate said output signal using said content segments received by said receiver and inserting said predefined content segments among said content segments in accordance with said control data. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for generating an output signal at a receiver using a broadcast signal transmitted in a digital broadcast system comprising the steps of:
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storing predefined content segments in a memory device associated with said receiver;
receiving said broadcast signal at said receiver, said broadcast signal comprising segments of program content and segments of control data;
accessing and retrieving selected said predefined content segments identified by said control data from said memory device; and
playing back the selected said predefined content segments at selected points in said output signal in accordance with said control data. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A transmitter in a digital broadcast system comprising:
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an input device for receiving content segments;
a memory device for storing index data for identifying predefined content segments stored at remote locations;
a multiplexer for multiplexing selected said content segments with at least said index data to generate a broadcast signal having, said broadcast signal comprising said content segments with said index data inserted at selected being used by receiver units at said remote locations to playback said content segments.
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15. An apparatus for generating an output signal from a broadcast signal in a digital broadcast system comprising:
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a memory device for storing content segments;
an output device for playing back said output signal;
a receiver for receiving said broadcast signal, said broadcast signal comprising control data to indicate which said content segments to playback via said output device and when said content segments are to be played back, said receiver being operable to extract said control data from said broadcast signal;
a processing device configured to receive said control data from said receiver, to generate a control signal used by said memory device to retrieve selected ones of said control segments in accordance with said control data, and to playback the selected said control segments substantially in real-time with respect to said broadcast signal. - View Dependent Claims (16)
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- 17. An apparatus as claimed in claim 17, wherein said control data in said broadcast signal comprises segment data corresponding to each of the selected ones of said content segments for playback, said segment data for a content segment being transmitted in lieu of the content in the content segment to reduce bandwidth used to transmit said broadcast signal.
Specification