Television caption data and method for composing television caption data

• US 6,734,917 B2
• Filed: 12/26/2000
• Issued: 05/11/2004
• Est. Priority Date: 01/17/2000
• Status: Expired due to Term

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Myung Ja
• Primary Examiner(s): Miller, John
• Assistant Examiner(s): Tran, Trang U.
• Application Number:
  US09/745,551
• Publication Number:
  US 20010040640A1
• Time in Patent Office: 1,232 Days
• Field of Search: H04/N 1.100, H04/N.700, 348/460, 348/461, 348/464, 348/465, 348/467, 348/468, 375/240.25, 375/240.26, 375/240.28, 370/472, 370/473, 370/474, 370/476, 370/241, 370/252
• US Class Current: 348/461
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 21/4884 for displaying subtitles
• CPC Class Codes: H04N 5/44504 Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits
• CPC Class Codes: H04N 7/0885 for the transmission of subtitles

Abstract

A television caption data and a method for generating the TV caption data are disclosed. In the present invention, before a caption information is input to a packet, the size of a block remaining in the packet is compared with the size of the caption information. If the size of the block is larger than the size of the caption information, the caption information is input to the remaining block of the packet. Otherwise, the caption information is input into a following packet which does have a size of a remaining block larger than the size of the caption information.

Claims

1. A method for generating TV caption data comprising:

(a) comparing the size of caption information to be input in a packet with the size of remaining block data in a first packet, wherein the caption information includes a caption command and at least one parameter corresponding to the caption command; and

(b) inputting the caption information in the remaining block data of the first packet if the size of the caption information is equal to or smaller than the size of the remaining block data of the first packet; and

otherwise

(c) inputting the caption information in a second packet following the first packet.

2. The method of claim 1, wherein the caption information is represented by more than two bytes.

3. The method of claim 1, wherein (c) further comprises:

comparing the size of the caption information with the size of remaining block data in the second packet; and

inputting the caption information in the remaining block data of the second packet if the size of the caption information is equal to or smaller than the size of the remaining block data of the first packet; and

otherwise

comparing the size of the caption information with the size of remaining block data in a next packet until the remaining block data of the next packet is larger than the size of the caption information and inputting the caption information in the remaining block data of the next packet.

4. The method of claim 3, wherein the caption information is represented by more than two bytes.

5. The TV caption data structure generated by the method of claim 1.

6. The TV caption data structure of claim 5, wherein each packet includes a packet header and a packet body.

7. The TV caption data structure of claim 6, wherein each packet body includes a service block header and a service block data.

8. The TV caption data structure generated by the method of claim 3.

9. The TV caption data structure of claim 8, wherein each packet includes a packet header and a packet body.

10. The TV caption data structure of claim 9, wherein each packet body includes a service block header and a service block data.

11. The method of claim 1, wherein the caption command includes one of a Defined Window (DF) command and a Display Window (DSW) command.

12. The method of claim 1, wherein the at least one parameter includes at least one from the group of a window ID, a priority, an anchor point, an anchor vertical, an anchor horizontal, a row count, a column count, a row lock, a column lock, a visible, a window style ID and a pen style ID.

13. The method for generating TV caption data comprising:

(a) comparing the size of caption information to be input with a size of remaining block data in a packet, wherein the caption information includes a caption command and at least one parameter corresponding to the caption command;

(b) repeating (a) until a packet in which the size of the remaining block data is equal to or greater than the size of the caption information is found; and

(c) inputting the caption information in the found packet.

14. The method of claim 13, wherein the caption information is represented by more than two bytes.

15. The TV caption data structure generated by the method of claim 13.

16. The TV caption data structure of claim 15, wherein each packet includes a packet header and a packet body.

17. The TV caption data structure of claim 16, wherein each packet body includes a service block header and a service block data.

18. The method of claim 13, wherein the caption command includes one of a Defined Window (DF) command and a Display Window (DSW) command.

19. The method of claim 13, wherein the at least one parameter includes at least one from the group of a window ID, a priority, an anchor point, an anchor vertical, an anchor horizontal, a row count, a column count, a row lock, a column lock, a visible, a window style ID and a pen style ID.