Filing Information

Inventor(s)	Hirokazu Hirose ·
Assignee(s)	Pioneer Corporation ·  View assignee updates
Correspondent	YOUNG & THOMPSON ·
Application Number	US11791162
Filing date	11/17/2005
PCT 371 date	07/24/2007
Publication date	12/06/2007
Predicted expiration date	11/17/2025
U.S. Classifications	348/468  · 348/E09.001  ·
International Classifications	H04N900  ·
Kind Code	A1
PCT Application Number	WO20PCTJP0521118 - 11/17/2005
Foreign Priority	JP2004336614 - 11/19/2004 ·

Patent Family

Abstract

An information multiplexing device (100) includes: (i) extraction means (105, etc.) for extracting a closed caption (CC) signal superimposed for holding character information during a vertical retrace erase period; (ii) measurement means (113) for measuring actual data amount of character information (CC) from the extracted CC signal according to a predetermined cycle unit (GOP); (iii) superposition means (113, etc.) for superposing additional information (CGMS/A); (iv) judgment means (113) for judging whether it is possible to superimpose additional information, according to the allowed data amount of character information which can be held in the GOP and the actual data amount measured; and (v) control means for controlling the superposition means so as to superpose the additional information if the judgment results in that the additional information can be superposed.

Independent Claims | See all claims (12)

1. 1-11. (canceled)
2. 12. An information multiplexing apparatus comprising: an extracting device for extracting a closed caption signal, which is superimposed to hold character information included in a video signal; a measuring device for measuring an actual data amount of the character information from the extracted closed caption signal, on the basis of a predetermined cycle unit of the video signal when the closed caption signal is extracted; a superimposing device for superimposing additional information added to the video signal, on the video signal; a judging deice for judging whether or not the additional information can be superimposed, on the basis of an allowable data amount of the character information which can be held in the predetermined cycle unit and the measured actual data amount when the closed caption signal is extracted; and a controlling device for controlling said superimposing device to superimpose the additional information in a position where the closed caption signal can be provided in the predetermined cycle unit when the closed caption signal is extracted if the additional information can be superimposed as a result of the judgment.
3. 21. An information multiplexing method comprising: an extracting process of extracting a closed caption signal, which is superimposed to hold character information included in a video signal; a measuring process of measuring an actual data amount of the character information from the extracted closed caption signal, on the basis of a predetermined cycle unit of the video signal when the closed caption signal is extracted; a superimposing process of superimposing additional information added to the video signal, on the video signal; a judging process of judging whether or not the additional information can be superimposed, on the basis of an allowable data amount of the character information which can be held in the predetermined cycle unit and the measured actual data amount when the closed caption signal is extracted; and a controlling process of controlling said superimposing device to superimpose the additional information in a position where the closed caption signal can be provided in the predetermined cycle unit when the closed caption signal is extracted if the additional information can be superimposed as a result of the judgment.
4. 22. A computer program of instructions for multiplexing control and for tangibly embodying a program of instructions executable by a computer provided in an information multiplexing apparatus, the computer program making the computer function as at least one portion of an extracting device, a measuring device, a superimposing device, a judging device, and a controlling device, wherein said information multiplexing apparatus comprising: the extracting device for extracting a closed caption signal, which is superimposed to hold character information included in, in a vertical blanking interval of a video signal; the measuring device for measuring an actual data amount of the character information from the extracted closed caption signal, on the basis of a predetermined cycle unit of the video signal when the closed caption signal is extracted; the superimposing device for superimposing additional information added to the video signal, on the video signal; the judging deice for judging whether or not the additional information can be superimposed, on the basis of an allowable data amount of the character information which can be held in the predetermined cycle unit and the measured actual data amount when the closed caption signal is extracted; and the controlling device for controlling said superimposing device to superimpose the additional information in a position where the closed caption signal can be provided in the predetermined cycle unit when the closed caption signal is extracted if the additional information can be superimposed as a result of the judgment.