Data formatter with orthogonal input/output and spatial reordering

• US 5,255,100 A
• Filed: 09/06/1991
• Issued: 10/19/1993
• Est. Priority Date: 09/06/1991
• Status: Expired due to Term

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Urbanus, Paul M.
• Primary Examiner(s): Kostak, Victor R.
• Application Number:
  US07/755,981
• Time in Patent Office: 774 Days
• Field of Search: 358/140, 358/141, 358/241, 358/236, 358/233, 358/231, 358/160, 358/60, 358/62
• US Class Current: 348/441
• CPC Class Codes: G09G 3/2022 using sub-frames
• 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 9/30 using solid-state colour display devices

Abstract

A method and structure for reformatting digitized standard video data for input into a binary spatial light modulator. The data enters circuitry that separates all of the equally weighted binary data into line segments, which are then stored. The data is then read out of the memory in such a manner that the proper digital samples correspond to the proper rows and columns of the spatial light modulator.

Claims

1. A method for displaying data from a standardized digital video signal comprising:

a. holding digital samples in a buffer, wherein the width of said buffer corresponds to the width of one digital sample;

b. reading said digital samples in words, wherein said words correspond to columns of said buffer;

c. storing said words in a frame memory;

d. transferring the contents of said frame memory to the inputs of a spatial light modulator array;

e. controlling said array to display said data; and

f. repeating steps a-e until said standardized video data stream is no longer available.

2. The method as claimed in claim 1 wherein said reading step further comprises reading the samples such that each word contains bits of the same binary weight.

3. The method as claimed in claim 1 wherein said storing step further comprises storing the words of the same binary weight for a set of columns of said spatial light modulator array so that the words of the same binary weight are spatially contiguous for each set of columns.

4. The method as claimed in claim 1 wherein said transferring step further comprises transferring the data into a serial shift register connected to said memory.

5. A system for displaying a standard digital video signal comprising:

a. at least one buffer for holding digital samples, wherein said buffer'"'"'s width is substantially equal to the length of one of said samples;

b. readout circuitry for reading said samples from said buffers by words, wherein said words correspond to columns of said buffer and word length is substantially equal to the number of samples in said buffers;

c. a frame memory for storing said words;

d. a spatial light modulator array; and

e. transfer circuitry for transferring said words from said frame memory to said spatial light modulator array.

6. The system as claimed in claim 5 wherein said buffer consists of a random access memory with a width equal to the width of said digital samples, and a depth equal to a factor of the total number of samples.

7. The system as claimed in claim 5 wherein said readout circuitry is operative to read from said buffers in parallel to create a word that has a width equal to the number of buffers, and each bit of said word is of equal binary weight.

8. The system as claimed in claim 5 wherein said spatial light modulator array further comprises an array of individually deflectable mirrors.

9. The system as claimed in claim 5 wherein said transfer circuitry further comprises a serial shift register.

10. A system for displaying a standard digital video signal comprising:

a. at least one buffer for holding digital samples, wherein said buffer'"'"'s width is substantially equal to the length of one of said samples;

b. readout circuitry for reading said samples from said buffers by words, wherein said words correspond to columns of said buffer and word length is substantially equal to the number of samples in said buffers;

c. a frame memory for storing said words;

d. a data display; and

e. transfer circuitry for transferring said words from said frame memory to said data display.

11. A method for displaying data from a standardized digital video signal comprising:

a. holding digital samples in a buffer, wherein the width of said buffer corresponds to the width of one digital sample;

b. reading said digital samples in words, wherein said words correspond to columns of said buffer;

c. storing said words in a frame memory;

d. transferring the contents of said frame memory to the inputs of a data display;

e. controlling said data display to display said data; and

f. repeating steps a-e until said standardized video data stream is no longer available.