Computer-TV video converting apparatus

• US 6,137,469 A
• Filed: 08/11/1997
• Issued: 10/24/2000
• Est. Priority Date: 11/28/1995
• Status: Expired due to Fees

• Current Assignee: AVerMedia Technologies, Inc.
• Original Assignee: AVerMedia Technologies, Inc.
• Inventors: Wu, Ming Chi, Yeh, Hsin-Hung, Chang, Yung-Che
• Primary Examiner(s): CHOW, DOON Y
• Application Number:
  US08/907,959
• Time in Patent Office: 1,170 Days
• Field of Search: 345/127, 345/121, 345/130, 345/138, 345/352, 345/356, 345/213, 345/169, 345/157, 345/156, 345/128, 345/129, 345/131, 345/158, 348/63, 348/96
• US Class Current: 345/660
• CPC Class Codes: G06F 3/1423 controlling a plurality of local displays, e.g. CRT and flat panel display
• CPC Class Codes: G09B 5/065 Combinations of audio and video presentations, e.g. videotapes, videodiscs, television systems
• CPC Class Codes: G09G 2340/04 Changes in size, position or resolution of an image
• CPC Class Codes: G09G 2340/045 Zooming at least part of an image, i.e. enlarging it or shrinking it
• CPC Class Codes: H04N 21/4122 additional display device, e.g. video projector digital output for controlling a plurality of local displays G06F3/1423
• CPC Class Codes: H04N 21/4143 embedded in a Personal Computer [PC]
• CPC Class Codes: H04N 21/42204 User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor constructive details of casings for the remote control device H01H9/0235; user interfaces for controlling a tuning device of a television receiver through a remote control H03J9/00; remote control of peripheral devices connected to a television receiver through the remote control device of the television receiver H04B1/205
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 21/4728 for selecting a Region Of Interest [ROI], e.g. for requesting a higher resolution version of a selected region
• CPC Class Codes: H04N 5/45 Picture in picture , e.g. displaying simultaneously another television channel in a region of the screen

Abstract

A computer-TV, video converting apparatus which transfers any determined partial area of a computer display into a zoomed image displayed onto a large scale TV, screen used for a briefing or a seminar in addition to a preformed partial area converting function, comprising a main converter with a build-in remote signal receiver, a computer cursor coordinate convening device and a remote controller while the remote controller provides the infrared or radio signal to the remote signal receiver by operating the mouse function keys of the remote controller to move the cursor to a center of a determined partial area of the computer display. The computer cursor coordinate converting device converts the absolute coordinate of the cursor center into a relative coordinates and sent the relative coordinate data to the main converter, a microprocessor and a display controller of the main converter then converts the expected zoom area into a video signal to the TV, screen to provide a zoomed image thereon.

Claims

1. A computer-TV, video converting apparatus which converting any determined partial area of a computer display to a zoomed image displayed on a TV, screen by operating a computer mouse or a mouse functional remote controller to move the computer cursor to a center of the partial area which expect to convert, in addition to a preformed partial area converting function which comprises:

a computer cursor coordinate converting device attached to the computer for converting an absolute coordinate of the cursor center into a relative coordinate and setting a frame of the partial area of said computer display expected to zoom;

a main converter for converting partial area of computer display signal into a zoomed display video signal to the TV, screen mainly comprising an analog/digital (A/D)) converter, a clock/timing generator, a flick filter for temporarily storage the data provided from said A/D converter and said clock/timing generator, a microprocessor for receiving the relative coordinate data came from said computer cursor coordinate converting device and delivering the processed data to a display controller according to the timing data produced by said clock/timing generator, a display clock/timing generator and said clock/timing generator for controlling a zoom rate signal and area size signal and delivering those to a video encoder through a TV, synchronous signal generator and a digital/analog (D/A) converter for providing the acceptable video signal to the TV, screen, and a remote signal receiver for receiving the remote signal for said microprocessor; and

a remote controller providing infrared or radio signal to said remote signal receiver of said main converter comprising a mouse functional knob for moving the cursor, two mouse functional button, including a selector and a clear button and a plurality of functional keys including at let a zoom function key, a zoom rate control key and a group of partial area performance keys each preset to convert a preformed partial area of said computer display respectively into said zoomed image displayed onto the TV, screen.

2. The computer-TV, video converting apparatus according to claim 1, wherein said computer cursor coordinate device for converting the coordinate of the cursor center at least comprising the steps of:

reading the absolute coordinate of the cursor center according to the specified numbers of said scan lines of the computer display;

normalizing the absolute coordinate values of the cursor center to the relative coordinate; and

sending the relative coordinate values to the microprocessor of said converter by a form of fixed timing.

3. A computer-TV, video converter according to claim 1, said microprocessor of said main converter comprises a random access memory (RAM) for storing the relative coordinate code of the computer cursor and tracking the address of cursor center automatically to determine the display area which expect to convert.

4. A computer-TV, video converter according to claim 1 or 3, wherein said microprocessor of said main converter for automatically tracking the address of the cursor center and determining the display to the TV, screen.

5. A computer-TV, video converter according to claim 1, said clock/timing generator and said display clock/timing generator have an output frequency adjusting device to take responsive action according to the command of said microprocessor for effecting said display controller to obtain a zoom rate reset function of the TV, display.