Television receiver including a teletext decoder with rotating page control

• US 5,337,155 A
• Filed: 07/23/1992
• Issued: 08/09/1994
• Est. Priority Date: 07/24/1991
• Status: Expired due to Term

• Current Assignee: US Philips Corporation (Koninklijke Philips N.V.)
• Original Assignee: US Philips Corporation (Koninklijke Philips N.V.)
• Inventors: Cornelis, Ronny M. P.
• Primary Examiner(s): Groody, James J.
• Assistant Examiner(s): Harvey, David E.
• Application Number:
  US07/919,005
• Time in Patent Office: 747 Days
• Field of Search: 358/147, 358/146, 358/142
• US Class Current: 348/473
• 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 television receiver including a teletext decoder is adapted to continue the further acquisition of a page in another memory after said page has been received. After each reception of the page it is checked whether this page has already been previously received and stored with the same sub-code. If this is not the case, the acquisition is continued in a further memory so that all sub-pages of a rotating page are stored without the user'"'"'s intervention being required and without the displayed page rotating. If the sub-page has already been previously stored, the acquisition is continued in the previously written memory. If the sub-page is a displayed sub-page, it is replaced by the new version.

Claims

1. A television receiver including a teletext decoder, said teletext decoder for extracting and displaying a page of selected teletext information included in a video signal each page of teletext information having a page number and a sub-code, said teletext decoder comprising:

control means for extracting the teletext information from the video signal;

means for selecting a predetermined page of teletext information;

storage means for storing the selected page;

first display means for displaying the selected page;

means for displaying a further page when a sub-code of the further page is the same as the sub-code of the displayed page.

2. The television receiver as claimed in claim 1, further including second storage means for storing the further page when the sub-code of the further page is the same as the sub-code of the displayed page.

3. The television receiver as claimed in claim 2, wherein the display means displays a predetermined message when the sub-code of the further page is the same as the sub-code of the displayed page.

7. The television receiver as claimed in claim 1, wherein the page number of the further page is the same as the page number of the displayed page.

9. The television receiver of claim 1, wherein the further page is a further transmission of the selected page.

4. A teletext decoder for extracting and displaying a page of selected teletext information included in a video signal, each page of teletext information having a page number and a sub-code comprising:

control means for extracting the teletext information from the video signal;

selecting means for selecting a predetermined page of teletext information;

storage means for storing the selected page of teletext information and corresponding sub-code; and

display means for displaying the selected page of teletext information;

said display means for displaying a further page of teletext information in response to the sub-code of the further page of teletext information being the same as the sub-code of the selected page of teletext information.

5. The teletext decoder of claim 4, further including second storage mean for storing the further page of teletext information when the sub-code of the further page of teletext information is the same as the sub-code of the selected page of teletext information.

6. The teletext decoder of claim 5, wherein the display means displays a predetermined message when the sub-code of the further page of teletext information is the same as the sub-code of the selected page of teletext information.

8. The teletext decoder as claimed in claim 4, wherein the page number of the further page is the same as the page number of the displayed page.

10. The teletext decoder of claim 4, wherein the further page is further transmission of the selected page.