Information displaying system which displays combined video and graphics images

• US 5,627,952 A
• Filed: 04/28/1993
• Issued: 05/06/1997
• Est. Priority Date: 04/29/1992
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Information Systems Research Australia Pty Limited (Canon Inc.), Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Silverbrook, Kia
• Primary Examiner(s): Jankus, Almis R.
• Application Number:
  US08/053,218
• Time in Patent Office: 1,469 Days
• Field of Search: 395/133-136, 395/141, 395/120, 395/121, 395/155-161, 395/152, 395/140, 395/149, 395/150, 395/162, 345/1-6
• US Class Current: 345/473
• CPC Class Codes: H04N 5/272 Means for inserting a foreground image in a background image, i.e. inlay, outlay
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus

Abstract

Information displaying apparatus for displaying animated video signals and combination animated and real-time video signals includes a controller for providing control signals for the information displaying apparatus and a host processor for generating graphics commands according to the provided control signals. A real time object graphics processor, controlled by the host processor, receives the generated graphics commands and generates graphics object image data in real-time according to the received graphics commands. A video coder, controlled by the host processor, receives the generated graphics object image data and outputs a video signal which comprises at least part of the received graphics object image data.

Claims

1. An information displaying apparatus for displaying combined source information with animated graphic objects, comprising:

communication means for receiving control signals for said information displaying apparatus from a controlling computer;

host processor means for interpreting the received control signals and for generating graphics commands according to the received controls signals,

real-time object graphics processor means, controlled by said host processor means, for receiving the generated graphics commands and for generating graphics object image data in real-time and in a rasterised display order without the use of an image frame storage according to the received graphics commands; and

video coder means, controlled by said host processor means, for receiving the generated graphics object image data and for outputting a video signal, at least a part of which comprises the received graphics object image data.

2. An information displaying apparatus according to claim 1, further comprising input means for inputting a video signal, wherein said video coder means receives the input video signal, combines the received video signal with the received graphics object image data to produce a combined video signal, and outputs the combined video signal.

3. An information displaying apparatus according to claim 1, further comprising communication means having an input port which receives the control signals from said control means and an output port which outputs control signals generated by said control means.

4. An information displaying apparatus according to claim 3, wherein said input port receives control signals from another information displaying apparatus and said output port outputs control signals, generated by said information displaying apparatus, to another information displaying apparatus.

5. An information displaying apparatus according to claim 1, further comprising timing means for providing an absolute time measurement to said video coder means and said real-time object graphics processor means for synchronizing said information displaying apparatus in absolute time.

6. An information displaying apparatus according to claim 1, operational with other of said information display apparatus in a linear array.

7. An information displaying apparatus according to claim 6, wherein said information displaying apparatus are controlled by a single computer.

8. An information displaying apparatus according to claim 1, operational with other of said information display apparatus in a video wall.

9. An information displaying apparatus according to claim 8, wherein said information displaying apparatus are controlled by a single computer.

10. An information displaying apparatus according to claim 1, further comprising host processor system code storage means for storing system code for said host processor.

11. An information displaying apparatus according to claim 1, further comprising memory means associated with said real-time object processor means for temporarily storing the graphics commands, the graphics commands comprising quadratic polynomial fragment information.

12. An information displaying apparatus according to claim 1, wherein the graphics commands comprise object fragment data representing outline curve fragments of graphics objects.

13. An information displaying apparatus according to claim 12, wherein the object fragment data comprises quadratic polynomial fragment information.

14. An information display network comprising a plurality of information displaying video apparatus, each said apparatus comprising:

communication means for receiving control signals for said information displaying apparatus from a controlling computer;

host processor means for interpreting the received control signals and for generating graphics commands according to the received control signals;

real-time object graphics processor means controlled by said host processor means, for receiving the generated graphics commands and for generating graphics object image data in real-time and in a rasterised display order without the use of an image frame storage according to the received graphics commands; and

video coder means, controlled by said host processor means for receiving the generated graphics object image data and for outputting a video signal, at least a part of which comprises the received graphics object image data;

wherein said plurality of said apparatus are interconnected together by said communication means to form a multiple information display system.

15. An information display network according to claim 14, wherein said information displaying apparatus are interconnected in the form of a daisy chain.

16. An information display network according to claim 14, wherein each host processor means in each information displaying apparatus generates graphics commands for a different portion of an image.