Multiple outlet digital video recording system
First Claim
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1. A method for a digital video recorder, comprising:
- receiving a first multimedia program from a first input tuner and a second multimedia program from a second input tuner;
as the first multimedia program and second multimedia program are being received, storing the first multimedia program and the second multimedia program in digital form on at least one storage device;
simultaneously retrieving for play back a video segment from the first multimedia program whose storage is in progress and the second multimedia program whose storage is in progress using video segment identifying information generated by the digital video recorder for at least one video segment in the first multimedia program whose storage is in progress and video segment identifying information generated by the digital video recorder for at least one video segment in the second multimedia program whose storage is in progress to cause delivery of selected video segments to an output subsystem, the digital video recorder automatically generating video segment identifying information for specific video segments in multimedia programs; and
wherein the simultaneously retrieving for play back step allows playback rate and direction of each multimedia program to be controlled individually and simultaneously to perform at least one of;
fast forward, rewind, pause, or play functions.
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Abstract
A multimedia time warping system allows a user to store selected multimedia data streams while the user is simultaneously watching or reviewing other multimedia data. Data streams are converted to digital streams for internal transfer and manipulation. A parser and event buffer decouple the CPU from having to parse the digital stream. Video segments are stored on a storage device and when data is requested for display, its video segments are extracted from the storage device and sent to a decoder that converts them into display output signals and delivers the display output signals to a display.
454 Citations
33 Claims
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1. A method for a digital video recorder, comprising:
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receiving a first multimedia program from a first input tuner and a second multimedia program from a second input tuner; as the first multimedia program and second multimedia program are being received, storing the first multimedia program and the second multimedia program in digital form on at least one storage device; simultaneously retrieving for play back a video segment from the first multimedia program whose storage is in progress and the second multimedia program whose storage is in progress using video segment identifying information generated by the digital video recorder for at least one video segment in the first multimedia program whose storage is in progress and video segment identifying information generated by the digital video recorder for at least one video segment in the second multimedia program whose storage is in progress to cause delivery of selected video segments to an output subsystem, the digital video recorder automatically generating video segment identifying information for specific video segments in multimedia programs; and wherein the simultaneously retrieving for play back step allows playback rate and direction of each multimedia program to be controlled individually and simultaneously to perform at least one of;
fast forward, rewind, pause, or play functions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A non-transitory computer-readable medium storing one or more sequences of instructions for a digital video recorder, which instructions, when executed by one or more processors, cause the one or more processors to perform:
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receiving a first multimedia program from a first input tuner and a second multimedia program from a second input tuner; as the first multimedia program and second multimedia program are being received, storing the first multimedia program and the second multimedia program in digital form on at least one storage device; simultaneously retrieving for play back a video segment from the first multimedia program whose storage is in progress and the second multimedia program whose storage is in progress using video segment identifying information generated by the digital video recorder for at least one video segment in the first multimedia program whose storage is in progress and video segment identifying information generated by the digital video recorder for at least one video segment in the second multimedia program whose storage is in progress to cause delivery of selected video segments to an output subsystem, the digital video recorder automatically generating video segment identifying information for specific video segments in multimedia programs; and wherein the simultaneously retrieving for play back step allows playback rate and direction of each multimedia program to be controlled individually and simultaneously to perform at least one of;
fast forward, rewind, pause, or play functions. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A digital video recorder, comprising:
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a first input tuner; a second input tuner; wherein a first multimedia program is received from the first input tuner and a second multimedia program is received from the second input tuner; storing logic, implemented at least partially in hardware, that, as the first multimedia program and second multimedia program are being received, stores the first multimedia program and the second multimedia program in digital form on at least one storage device; content retrieval logic, implemented at least partially in hardware, that simultaneously retrieves for play back a video segment from the first multimedia program whose storage is in progress and the second multimedia program whose storage is in progress using video segment identifying information generated by the digital video recorder for at least one video segment in the first multimedia program whose storage is in progress and video segment identifying information generated by the digital video recorder for at least one video segment in the second multimedia program whose storage is in progress to cause delivery of selected video segments to an output subsystem, the digital video recorder automatically generates video segment identifying information for specific video segments in multimedia programs; and wherein the content retrieval logic allows playback rate and direction of each multimedia program to be controlled individually and simultaneously to perform at least one of;
fast forward, rewind, pause, or play functions. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification