Broadcast receiver and method for performing closed caption

• US 20080005763A1
• Filed: 06/27/2007
• Published: 01/03/2008
• Est. Priority Date: 06/29/2006
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Oh, Jae
• Application Number:
  US11/819,466
• Publication Number:
  US 20080005763A1
• Time in Patent Office: Days
• US Class Current: 725/32
• CPC Class Codes: H04N 7/0882 for the transmission of character code signals, e.g. for teletext circuits for the digital non-picture data signal H04N7/035

Abstract

A host comprises a host controller configured to receive a first call for a specified attribute for closed caption from an application program; and the host controller further configured to return a predefined value to the application program or to perform exception handling in response to the first call when the specified attribute for closed caption is not supported by the host. And, the host controller is further configured to receive a second call requesting an array of available attributes for closed caption from the application program and to return the array of available attributes to the application program in response to the second call. Also, the host controller is further configured to return an array of available attributes for closed caption to the application program in response to the first call when the specified attribute for closed caption is not supported by the host.

Claims

1. A host comprising:

a host controller configured to receive a first call for a specified attribute for closed caption from an application program; and

the host controller further configured to return a predefined value to the application program or to perform exception handling in response to the first call when the specified attribute for closed caption is not supported by the host.

2. The host of claim 1, wherein the host controller is further configured to receive a second call requesting an array of available attributes for closed caption from the application program and to return the array of available attributes to the application program in response to the second call.

3. The host of claim 1, wherein the host controller is further configured to return an array of available attributes for closed caption to the application program in response to the first call when the specified attribute for closed caption is not supported by the host.

4. The host of claim 1, wherein the predefined value is any one of a null value and an array of zero-length.

5. The host of claim 3, wherein the array of available attributes for closed caption is in accordance with a parameter value of the type of the array of attributes of the first call.

6. The host of claim 5, wherein the parameter value of the type is any one of a analog type and a digital type.

7. The host of claim 1, wherein the application program includes an Open Cable Application Platform (OCAP) application, Advanced Common Application Platform (ACAP), and Multimedia Home Platform (MHP).

8. A host comprising:

a host controller configured to receiving a call requesting an array of available attributes for closed caption from an application program; and

the host controller further configured to return the array of available attributes in response to the call.

9. The host of claim 8, wherein the array of available attributes is in accordance with a parameter value of the type of the array of attributes.

10. The host of claim 9, wherein the parameter value is any one of an analog type and a digital type.

11. The host of claim 8, wherein the application program includes an Open Cable Application Platform (OCAP) application, Advanced Common Application Platform (ACAP), and Multimedia Home Platform (MHP).

12. A method for performing closed caption in a cable system, the method comprising:

receiving a first call for a specified attribute for closed caption from an application program; and

returning a predefined value to the application program or performing exception handling in response to the first call when the specified attribute for closed caption is not supported by a host.

13. The method of claim 12, further comprising:

receiving a second call requesting an array of available attributes for closed caption from the application program; and

returning the array of available attributes to the application program in response to the second call.

14. The method of claim 12, further comprising returning an array of available attributes for closed caption to the application program in response to the first call when the specified attribute for closed caption is not supported by the host.

15. The method of claim 12, wherein the predefined value is any one of a null value and an array of zero-length.

16. The method of claim 14, wherein the array of available attributes for closed caption is in accordance with a parameter value of the type of the array of attributes of the first call.

17. The method of claim 16, wherein the parameter value of the type is any one of a analog type and a digital type.

18. The method of claim 12, wherein the application program includes an Open Cable Application Platform (OCAP) application, Advanced Common Application Platform (ACAP), and Multimedia Home Platform (MHP).

19. A method of performing closed caption in a cable system, the method comprising:

receiving a first call requesting an array of available attributes for closed caption from an application program; and

returning the array of available attributes for closed caption in response to the first call.

20. The method of claim 19, further comprising:

receiving a second call requesting for a specified attribute in the array of available attributes for closed caption in response to the first call from an application program; and

returning a attribute value of the specified attribute for closed caption in response to the second call or setting a attribute value of the specified attribute for closed caption in response to the second call.

21. The method of claim 19, wherein the application program includes an Open Cable Application Platform (OCAP) application, Advanced Common Application Platform (ACAP), and Multimedia Home Platform (MHP).