Common on screen display size for multiple display formats

• US 20050162446A1
• Filed: 04/29/2003
• Published: 07/28/2005
• Est. Priority Date: 04/29/2002
• Status: Abandoned Application

• Current Assignee: Thomson Licensing SA (Vantiva SA)
• Original Assignee: Thomson Licensing SA (Vantiva SA)
• Inventors: Worrell, Charles William
• Application Number:
  US10/512,915
• Publication Number:
  US 20050162446A1
• Time in Patent Office: Days
• US Class Current: 345/660
• CPC Class Codes: G09G 2340/02 Handling of images in compressed format, e.g. JPEG, MPEG
• CPC Class Codes: G09G 2340/14 Solving problems related to the presentation of information to be displayed
• CPC Class Codes: G09G 5/00 Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators image data processing or generation, in general G06T
• CPC Class Codes: H04N 21/42653 for processing graphics
• CPC Class Codes: H04N 5/445 for displaying additional information H04N5/50 takes precedence
• 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 5/46 for receiving on more than one standard at will deflecting circuits of multi-standard receivers H04N3/27
• CPC Class Codes: H04N 7/012 Conversion between an interlaced and a progressive signal for graphics images G09G2310/0229
• CPC Class Codes: H04N 7/0122 the input and the output signals having different aspect ratios

Abstract

There is provided an On-Screen graphics Display (OSD) for displaying multiple display formats. The OSD includes a graphics plane, having a pre-specified number of lines, for displaying graphics in different subsets of the pre-specified number of lines. One subset is defined as a rendered area that is displayed for a display format associated with a video signal, and a second area, defined as a contingently rendered area, is rendered responsively to the display format.

Claims

1. An On Screen Display (OSD) capable of generating a graphics plane of a pre-selected number of lines, with areas of the graphics plane being rendered in accordance with a display format corresponding to a video signal, said apparatus comprising:

means for generating a rendered area of the graphics plane; and

means for generating a contingently rendered area of the graphics plane, responsive to the display format associated with the video signal.

2. The apparatus of claim 1, wherein an anchoring location separates the generated graphics plane into the rendered area and the contingently rendered area.

3. The apparatus of claim 1, wherein the anchoring location is specified relative to the screen of a display device by at least one of:

a line of the screen of the display device, and a location on the screen identified as a coordinate point.

4. The apparatus of claim 1, wherein the graphics plane includes a second contingently rendered area to support a second display format associated to a second video signal.

5. The apparatus of claim 1, wherein the generated graphics plane is 540 lines, with the rendered area being 480 lines and the contingently rendered area being 60 lines when the video signal is associated with a 1080 interlaced display (1080i) format.

6. The apparatus of claim 5, wherein only the rendered area of the generated graphics plane is displayed when the video signal is associated with a 480 line progressively scanned display format.

7. A method for generating a graphics plane of a pre-selected number of lines, with areas of the graphics plane being rendered in accordance with a display format corresponding to a video signal, the method comprising the steps comprising:

generating a rendered area of the graphics plane; and

generating a contingently rendered area of the graphics plane, responsive to the display format associated with the video signal.

8. The method of claim 7, wherein an anchoring location separates the generated graphics plane into the rendered area and the contingently rendered area.

9. The method of claim 7, wherein the anchoring location is specified relative to the screen of a display device by at least one of:

a line of the screen of the display device, and a location on the screen identified as a coordinate point.

10. The method of claim 7, wherein the graphics plane includes a second contingently rendered area to support a second display format of a second video signal.

11. The method of claim 7, wherein the generated graphics plane is 540 lines, with the rendered area being 480 lines and the contingently rendered area being 60 lines when the video signal is associated with a 1080 interlaced display format.

12. The method of claim 11, wherein only the rendered area of the generated graphics plane is displayed when the video signal is associated with a 480 line progressively scanned display format.

13. The method of claim 7, comprising an additional step of:

overlaying the generated graphics plane over displayed video data representing the video signal.

14. A method for generating a graphics plane of a pre-selected number of lines, wherein areas of the graphics plane and text from communicated data are displayed in the graphics plane are rendered in accordance with a display format associated with a video signal and text is, the method comprising the steps of:

displaying a rendered area of the graphics plane in accordance with the display format associated with the video signal;

formatting the communicated text responsively to format commands in the communicated data and the display format associated with the video signal;

displaying the communicated text, wherein an attribute of the displayed communicated text differs from the format commands.

15. The method of claim 14, wherein the format of the displayed communicated text has a different font size than the font size specified in the format commands.

16. The method of claim 14, wherein the formatting step using a look up table to change an attribute of the displayed communicated text.

17. The method of claim 14, wherein communicated text comports to HTML.

18. The method of claim 14 comprising the additional steps of:

generating a contingently rendered area of the graphics plane to support a second display format associated with a second video signal;

reformatting the communicated data to the second display format of the second video signal; and

displaying the reformatted communicated data wherein a second attribute of the reformatted communicated data is displayed differently than specified in the formatting commands.

19. The method of claim 14, wherein the attribute is at least one of:

font face, size, color, weight, and point-size.