Standard independent digitized video system

• US 5,079,544 A
• Filed: 02/27/1989
• Issued: 01/07/1992
• Est. Priority Date: 02/27/1989
• Status: Expired due to Term

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Thompson, E. Earle, DeMond, Thomas W.
• Primary Examiner(s): Brier, Jeffery A.
• Application Number:
  US07/315,638
• Time in Patent Office: 1,044 Days
• Field of Search: 340/731, 340/783, 340/763, 340/764, 340/703, 340/701, 358/140, 358/133, 358/134, 358/137
• US Class Current: 345/84
• CPC Class Codes: G02B 26/0841 the reflecting element being moved or deformed by electrostatic means
• CPC Class Codes: G02B 27/48 Laser speckle optics
• CPC Class Codes: G09F 19/16 involving the use of mirrors
• CPC Class Codes: G09F 19/18 involving the use of optical projection means, e.g. projection of images on clouds projection apparatus per se G03B
• CPC Class Codes: G09F 9/372 the positions of the elements being controlled by the application of an electric field
• CPC Class Codes: G09G 2300/0809 Several active elements per pixel in active matrix panels
• CPC Class Codes: G09G 2300/0814 used for selection purposes, e.g. logical AND for partial update
• CPC Class Codes: G09G 2300/0842 forming a memory circuit, e.g. a dynamic memory with one capacitor
• CPC Class Codes: G09G 2310/0235 Field-sequential colour display
• CPC Class Codes: G09G 2310/066 Waveforms comprising a gently increasing or decreasing portion, e.g. ramp
• CPC Class Codes: G09G 2320/0633 by amplitude modulation of the brightness of the illumination source
• CPC Class Codes: G09G 3/2007 Display of intermediate tones
• CPC Class Codes: G09G 3/2018 by time modulation using two or more time intervals
• CPC Class Codes: G09G 3/2025 the sub-frames having all the same time duration
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 3/3413 Details of control of colour illumination sources
• CPC Class Codes: G09G 3/346 based on modulation of the reflection angle, e.g. micromirrors micromirrors devices per se G02B26/0833
• CPC Class Codes: H04N 5/7458 the modulator being an array of deformable mirrors, e.g. digital micromirror device [DMD]
• CPC Class Codes: H04N 9/3129 scanning a light beam on the display screen scanning a light beam on a screen in displays other than projection devices G09G3/02; scanning systems in general G02B26/10; projectors using laser light sources in general H04N9/3161

Abstract

A video display system which can receive and display a number of different video signals having different formats utilizing a processor extract the image from a stream of digital signals to produce a digitized image to be displayed by a digital spatial light modulator.

Claims

1. A standard independent video display system comprising:

(a) a receiver receiving image information including chrominance and luminance encoded therein at a first data rate;

(b) a converter in electrical communication with said receiver for converting said image information into digital codes representative of said chrominance and luminance of a plurality of pixels;

(c) a memory coupled to said converter for selectively receiving and storing said digital codes;

(d) a processor coupled to said memory for selectively performing operations on at least some of said digital codes; and

(e) a spatial light modulator coupled to said memory for receiving selected ones of said digital codes at a second data rate to modulate a light source into a plurality of light beams perceptually varying in chrominance and luminance with said second data rate higher than said first data rate.

2. System as in claim 1 wherein said memory is divided into a first and second memories with said first memory storing said digital codes and said second memory storing results from said processor.

3. System as in claim 1 wherein said processor determines the nature of said information.

4. System as in claim 3 wherein said processor determines the nature of said information from the state of an indicator.

5. System as in claim 4 wherein said indicator is a switch.

6. System as in claim 4 wherein said indicator is information in a storage location.

7. System as in claim 3 wherein said processor determines the nature of said information from the digital codes.

8. System as in claim 1 wherein the nature of said information includes the broadcast standard.

9. System as in claim 1 wherein said spatial modulator includes:

(a) an array of individual display cells;

(b) at least two memory cells associated with each display cell;

(c) a first decoder for addressing a plurality of memory cells for storing information therein; and

(d) a second decoder for addressing substantially all of said display cells to display an image.

10. System as in claim 9 wherein each memory cell includes at least two components.

11. System as in claim 10 wherein component is a transistor.

12. System as in claim 10 wherein one component stores capacitively.

13. System as in claim 10 wherein both components are transistors.

14. System as in claim 9 wherein said memory cell is implemented in CMOS.

15. System as in claim 9 wherein said memory cell is implemented in NMOS.

16. System as in claim 9 wherein said memory cell is implemented in PMOS.

17. System as in claim 9 wherein said second decoder simultaneously addresses one memory cell associated with substantially all of said display cells to display an image.

18. System as in claim 9 wherein said second decoder simultaneously addresses one memory cell associated with all of said display cells to display an image.

19. System as in claim 9 wherein said first decoder addresses a row of said array at a time.

20. Method for a standard independent video display system comprising the steps of:

(a) receiving image information including chrominance and luminance encoded therein at a first data rate;

(b) converting said image information into digital codes representative of said chrominance and luminance of a plurality of pixels;

(c) storing said digital codes;

(d) performing operations on at least some of said digital codes; and

(e) modulating a light source into a plurality of light beams perceptually varying in chrominance and luminance, at a second data rate higher than said first data rate.

21. A standard independent video display system comprising:

(a) a receiver for receiving a serial stream of pixel data including chrominance and luminance encoded therein at a first data rate;

(b) a converter coupled to said receiver for converting said serial stream into digital codes representative of said chrominance and luminance of each pixel;

(c) a first memory coupled to said converter for selectively receiving and storing said digital codes;

(d) a processor coupled to said first memory for selectively reading and performing data manipulation operations on predetermined ones of said digital codes;

(e) a second memory coupled to said processor for selectively receiving and storing results of said data manipulation operations from said processor; and

(f) a spatial light modulator coupled to said second memory for receiving selected ones of said stored results at a second data rate, said modulator operative in response to said selected ones of said stored results, to modulate a light source into a plurality of light beams wherein said light beams perceptually varying in chrominance and luminance with said second data rate higher than said first data rate.