Time-shifted video signal processing
First Claim
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1. A time-shifted video method comprising the steps of:
- a first buffering of an input signal having a digital video format;
compressing said input signal in parallel with said first buffering, said compressing including a second buffering of said input signal;
in a real-time mode, delivering a plurality of real-time video frames along a first processing path to an output for display in response to said input signal as first buffered;
in a time-shifted mode, delivering a plurality of time-shifted video frames along a second processing path to said output for display in response to said input signal as compressed, said time-shifted video frames being delayed relative to said real-time video frames; and
pausing at a particular one of said real-time frames during a transition from said real-time mode to said time-shifted mode, wherein said time shifted mode comprises a fast forward or a fast rewind.
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Abstract
A time-shifted video method has a real-time mode during which real-time video frames are delivered for display. In a time-shifted mode, time-shifted video frames are delivered for display. The time-shifted video frames are delayed relative to the real-time video frames. A real-time frame is paused during a transition from the real-time mode to the time-shifted mode.
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Citations
23 Claims
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1. A time-shifted video method comprising the steps of:
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a first buffering of an input signal having a digital video format; compressing said input signal in parallel with said first buffering, said compressing including a second buffering of said input signal; in a real-time mode, delivering a plurality of real-time video frames along a first processing path to an output for display in response to said input signal as first buffered; in a time-shifted mode, delivering a plurality of time-shifted video frames along a second processing path to said output for display in response to said input signal as compressed, said time-shifted video frames being delayed relative to said real-time video frames; and pausing at a particular one of said real-time frames during a transition from said real-time mode to said time-shifted mode, wherein said time shifted mode comprises a fast forward or a fast rewind. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus comprising:
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a real-time decoder configured to (i) generate a first output signal by decompressing a compressed digital video input signal and (ii) pause a frame of said first output signal during a transition from a first mode to a second mode; a frame storage system configured to store said compressed digital video input signal separately from said real-time decoder; a time-shifted decoder (i) coupled to said frame storage system and (ii) configured to generate a second output signal in response to said compressed digital video input signal stored in said frame storage system; and a controller configured to generate a command configured to control presenting (i) said first output signal when in said first mode and (ii) said second output signal when in said second mode, wherein said second mode comprises a fast forward or a fast rewind.
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13. An apparatus comprising:
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an input for receiving a video signal in an uncompressed format; a frame buffer directly connected to said input and configured to (i) generate a first output signal by buffering said video signal and (ii) pause said first output signal at a frame during a transition from a first mode to a second mode; an encoder configured to generate a first intermediate signal by compressing said video signal; a controller separate from said encoder and configured to (i) receive said first intermediate signal and (ii) present a second intermediate signal; a frame storage system directly connected to said controller and configured to (i) store said first intermediate signal and (ii) generate said second intermediate signal; and a time-shifted decoder separate from said controller and configured to generate a second output signal by decompressing said second intermediate signal, wherein said controller is further configured to generate a command configured to control presenting (i) said first output signal when in said first mode and (ii) said second output signal when in said second mode, wherein said second mode comprises a fast forward or a fast rewind. - View Dependent Claims (14, 15)
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16. An apparatus comprising:
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a controller configured to receive (i) a first command and (ii) a video input signal in a compressed format; a real-time decoder configured to (i) generate a first output signal in response to decompressing said video input signal and (ii) pause a frame of said first output signal during a transition from a first mode to a second mode; a frame storage system coupled to said controller to exchange said video input signal; and a time-shifted decoder coupled to said controller and configured to generate a second output signal in response to (i) said video input signal received from said controller and (ii) said first command; wherein said controller is further configured to generate a second command to control presenting (i) said first output signal when in said first mode and (ii) said second output signal when in said second mode, wherein said second mode comprises a fast forward or a fast rewind. - View Dependent Claims (17, 18)
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19. An apparatus comprising:
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a first frame buffer configured to (i) generate a first signal and a second signal by buffering an input signal, (ii) pause said first signal at a frame during a transition from a real-time mode to a time-shifted mode and (iii) buffer a third signal; a controller connected to said first frame buffer to receive said third signal; a buffer connected to said controller to store said third signal; an encoder connected to said first frame buffer and configured to generate said third signal by compressing said second signal; a decoder configured to generate a fourth signal by decompressing said third signal as retrieved from said buffer; and a switch connected to said first frame buffer and configured to present an output signal comprising (i) said first signal when in said real-time mode and (ii) said fourth signal when in said time-shifted mode, wherein said time shifted mode comprises a fast forward or a fast rewind. - View Dependent Claims (20, 21, 22, 23)
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Specification