Signal processing apparatus and signal processing method
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHirofumi Uchida, Tatsushi Bannai
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Abstract
For conversion of a first video signal into a second video signal of a different format, a second auxiliary data packet is generated from a header carrying location data for multiplexing a first auxiliary data packet and main data of a first auxiliary data packet in the first video signal, and is multiplexed with the second video signal. For conversion from the second video signal into the first video signal, the first auxiliary data packet is generated from the header and the main data of the second auxiliary data packet, and multiplexed at the location determined by the location data in the first video signal.
Claims28
A signal processing apparatus comprising:
- a location data generator for generating a location data indicating a location where a first auxiliary data packet including a first header and first data is multiplexed in a video signal of a first format;
- a packet generator for generating a second auxiliary data packet including a second header carrying the location data and second data;
- and
- a multiplexing section for multiplexing the second auxiliary data packet in a video signal of a second format.
A signal processing apparatus comprising:
- a packet separating section for separating, from a video signal of a first format, a first auxiliary data packet multiplexed in an auxiliary data area of the video signal of the first format, the first auxiliary data packet including a first header and first data;
- a location data generator for generating location data indicating a location where the first auxiliary data packet separated by the packet separating section is multiplexed in the auxiliary data area;
- a packet generator for generating a second auxiliary data packet including second data and a second header carrying the location data;
- and
- a multiplexing section for multiplexing the second auxiliary data packet in a video signal of a second format converted from the first format.
A signal processing apparatus comprising:
- a packet separating section for separating a second auxiliary data packet from a auxiliary data area of a video signal of a second format, the second auxiliary data packet including second data and a second header carrying location data indicating a location where a first auxiliary data packet is multiplexed in a video signal of a first format, the first auxiliary data packet including a first header and first data;
- a packet generator for generating the first auxiliary data packet from the second data;
- and
- a multiplexing section for multiplexing, according to the location data, the first auxiliary data packet in the video signal of the first format converted from the second format.
A signal processing apparatus comprising:
- a first converter for converting an auxiliary data packet of a first format of 10 bits/N words including auxiliary data and check sum data into an auxiliary data packet of a second format of 8 bits/N words including lower 8 bits of the auxiliary data and the check sum data;
- and
- a second converter for converting the auxiliary data packet of the second format of 8 bits/N words into the auxiliary data packet of the first format of 10 bits/N words, by generating upper 2 bits data from the lower 8 bits of the auxiliary data and the check sum data.
A method of processing a signal, comprising the steps of:
- generating a second auxiliary data packet including second data and a second header carrying location data indicating a location where a first auxiliary data packet including a first header and first data is multiplexed in a video signal of a first format;
- and
- multiplexing the second auxiliary data packet in a video signal of a second format.
A method of processing a signal, comprising the steps of:
- generating location data indicating a location of a first auxiliary data packet multiplexed in an auxiliary data area of a video signal of a first format, the first auxiliary data packet including a first header and first data;
- generating a second auxiliary data packet including a second header carrying the location data and second data carrying the first data;
- and
- multiplexing the second auxiliary data packet in a video signal of a second format converted from the first format.
A method of processing a signal, comprising the steps of:
- separating a second auxiliary data packet from an auxiliary data area of a video signal of a second format, the second auxiliary data packet including second data and a second header carrying location data indicating a location where a first auxiliary data packet including a first header and first data multiplexed in a video signal of a first format,;
- generating the first auxiliary data packet from the second data;
- and
- multiplexing the first auxiliary data packet in a video signal of the first format converted from the second format according to the location data.
A method of processing a signal, comprising the steps of:
- converting an auxiliary data packet of a first format of 10 bits/N words including auxiliary data and check sum data into an auxiliary data packet of a second format of 8 bits/N words including lower 8 bits of the auxiliary data and the check sum data;
- converting the auxiliary data packet of the second format of 8 bits/N words into the auxiliary data packet of the first format of 10 bits/N words, by generating upper 2 bits data from the lower 8 bits of the auxiliary data and the check sum data.
Dependencies are inferred from the claim text.