Digital broadcast receiving apparatus
First Claim
1. A digital broadcast receiving apparatus comprising a packet-overwriting device capable of overwriting unnecessary-packet areas corresponding to unnecessary packet identifiers (PIDs) in a first transport stream (TS) using packets corresponding to necessary PIDs in a second TS;
- and necessary-packet extracting means for extracting packets corresponding to necessary PIDs in a second TS input from a second one of said demodulator sections, where the first one of said demodulator sections is different from the second one of said demodulator sections; and
packet-overwriting means for overwriting packets extracted by said necessary-packet extracting means to said unnecessary-packet areas detected by said unnecessary-packet detecting means, wherein a custom transfer stream output from said packet-overwriting means is output to at least one of said output destinations specified by said input section.
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Accused Products
Abstract
Based on PIDs registered in a necessary-PID table, a second TS-packet extracting section extracts necessary packets from a second TS. Based on packets registered in the table, a detecting section detects unnecessary-packet areas in a first TS. A TS-packet overwriting section overwrites the extracted necessary packets to unnecessary-packet areas in the first TS, performs multiplexing thereof, and thereby generates a CTS, which is common to the TSs. Thereby, while a broadcast program in the first TS is viewed, image-recording of a broadcast program in the second TS can be performed. Since the configuration can be made using a separating section, a decoder, a digital interface, and the like for handling single-system TSs, reduction in the cost and size can be implemented.
19 Citations
14 Claims
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1. A digital broadcast receiving apparatus comprising a packet-overwriting device capable of overwriting unnecessary-packet areas corresponding to unnecessary packet identifiers (PIDs) in a first transport stream (TS) using packets corresponding to necessary PIDs in a second TS;
- and necessary-packet extracting means for extracting packets corresponding to necessary PIDs in a second TS input from a second one of said demodulator sections, where the first one of said demodulator sections is different from the second one of said demodulator sections; and
packet-overwriting means for overwriting packets extracted by said necessary-packet extracting means to said unnecessary-packet areas detected by said unnecessary-packet detecting means, wherein a custom transfer stream output from said packet-overwriting means is output to at least one of said output destinations specified by said input section. - View Dependent Claims (2, 3, 4, 5, 6)
- and necessary-packet extracting means for extracting packets corresponding to necessary PIDs in a second TS input from a second one of said demodulator sections, where the first one of said demodulator sections is different from the second one of said demodulator sections; and
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7. A digital broadcast receiving apparatus comprising:
unnecessary-packet detecting means for detecting unnecessary-packet areas corresponding to unnecessary packet identifiers (PIDs) in a first transport stream (TS) that is input;
necessary-packet extracting means for extracting packets corresponding to necessary PIDs in a second TS input from a second one of said demodulator sections, where the first one of said demodulator sections is different from the second one of said demodulator sections; and
packet-overwriting means for overwriting packets extracted by said necessary-packet extracting means to said unnecessary-packet areas detected by said unnecessary-packet detecting means in the first TS, wherein a custom transfer stream output from said packet-overwriting means is output to at least one of said output destinations specified by said input section.- View Dependent Claims (8, 9, 10, 11)
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12. A digital broadcast receiving apparatus comprising:
- tuners for receiving modulated waves of digital broadcast waves;
a plurality of groups of demodulator sections for demodulating signals output from said tuners to thereby output transport streams (TSs);
an input section for selecting a plurality of desired TSs and for specifying output destinations;
unnecessary-packet detecting means for detecting unnecessary-packet areas corresponding to unnecessary packet identifiers (PIDs) in a first TS input from a first one of said demodulator sections;
necessary-packet extracting means for extracting packets corresponding to necessary PIDs in a second TS input from a second one of said demodulator sections, where the first one of said demodulator sections is different from the second one of said demodulator sections; and
packet-overwriting means for overwriting packets extracted by said necessary-packet extracting means to said unnecessary-packet areas detected by said unnecessary-packet detecting means, wherein a custom transfer stream output from said packet-overwriting means is output to at least one of said output destinations specified by said input section.
- tuners for receiving modulated waves of digital broadcast waves;
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13. A digital-broadcast receiving method comprising the steps of:
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registering necessary packet identifiers (PIDs) regarding a first transport stream (TS) that is input;
registering necessary PIDs regarding a second TS that is input;
detecting unnecessary PIDs in said first TS extracting packets corresponding to said registered necessary PIDs regarding the second TS from the second TS;
overwriting packets extracted from said second TS to unnecessary-packet areas corresponding to said unnecessary PIDs in said first TS;necessary-packet extracting means for extracting packets corresponding to necessary PIDs in a second TS input from a second one of said demodulator sections, where the first one of said demodulator sections is different from the second one of said demodulator sections; and
packet-overwriting means for overwriting packets extracted by said necessary-packet extracting means to said unnecessary-packet areas detected by said unnecessary-packet detecting means, wherein a custom transfer stream output from said packet-overwriting means is output to at least one of said output destinations specified by said input section.
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14. A computer-readable recording medium containing a digital-broadcast-receiving software program, which, when read by the computer, causes the computer to execute the steps of:
- registering necessary packet identifiers (PIDs) regarding a first transport stream (TS) that is input;
registering necessary PIDs regarding a second TS that is input;
detecting unnecessary PIDs in said first TS extracting packets corresponding to said registered necessary PIDs regarding the second TS from the input second TS;
overwriting packets extracted from said second TS to the unnecessary-packet areas corresponding to the unnecessary PIDs detected in said first TS;
necessary-packet extracting means for extracting packets corresponding to necessary PIDs in a second TS input from a second one of said demodulator sections, where the first one of said demodulator sections is different from the second one of said demodulator sections; and
packet-overwriting means for overwriting packets extracted by said necessary-packet extracting means to said unnecessary-packet areas detected by said unnecessary-packet detecting means, wherein a custom transfer stream output from said packet-overwriting means is output to at least one of said output destinations specified by said input section.
- registering necessary packet identifiers (PIDs) regarding a first transport stream (TS) that is input;
Specification