Simplified image reconstruction interface

• US 5,442,371 A
• Filed: 09/27/1993
• Issued: 08/15/1995
• Est. Priority Date: 09/27/1993
• Status: Expired due to Fees

• Current Assignee: Honeywell Incorporated (Honeywell International Inc.)
• Original Assignee: Honeywell Incorporated (Honeywell International Inc.)
• Inventors: Miller, David W., Nelson, Larry A., Robinder, Ronald C.
• Primary Examiner(s): Weldon, Ulysses
• Assistant Examiner(s): Luu, Matthew
• Application Number:
  US08/127,565
• Time in Patent Office: 687 Days
• Field of Search: 345/150, 345/151, 345/152, 345/153, 345/154, 345/155, 345/98, 345/99, 348/448, 348/446, 348/450
• US Class Current: 345/98
• CPC Class Codes: H04N 5/70 Circuit details for electroluminescent devices
• CPC Class Codes: H04N 7/012 Conversion between an interlaced and a progressive signal for graphics images G09G2310/0229

Abstract

A video interface apparatus for converting an incoming interlaced video signal to an outgoing non-interlaced video signal for an LCD flat panel with an arbitrary number of rows and columns. The incoming video signal is digitized and stored in a memory. An address generator creates addresses for reading and writing data from and into the memory, and the resulting read data is used to reconstruct the digital signal into an image for display on the LCD flat panel.

Claims

1. A video interface apparatus for convening an incoming interlaced video signal to an outgoing non-interlaced video signal for an LCD flat panel with an arbitrary number of rows and columns, the apparatus comprising:

(a) analog to digital (A/D) means for convening the incoming analog video signal into a corresponding digital signal;

(b) memory means connected to the A/D means for storing and outputting a plurality of rows of the digital signal;

(c) read and write (R/W) address generator means connected to the memory means for generating addresses for reading and writing data from and into the memory means; and

(d) image reconstruction means connected to the memory means for reconstructing the digital signal into an image for display on the LCD flat panel, having a digital to analog converter (DAC) means connected to the memory means for converting the digital signal output from the memory means to a corresponding analog signal, a line filtering means connected to the DAC means for filtering the analog signal to provide a smoothly varying analog signal, a second A/D means connected to the line filtering means for converting the smoothly varying analog signal into a corresponding LCD digital signal matching the display resolution of the LCD flat panel, a luminance correction means connected to the second A/D means for correcting the luminance of the LCD digital signal, a sequential read means connected to the luminance correction means for sequentially reading and outputting the corrected LCD digital signal, and an output memory means connected to the sequential read means for storing a row of the LCD digital signal and outputting the row to the LCD flat panel.

2. The video interface apparatus of claim 1, wherein the memory means comprises barrel shifted memory.

3. The video interface apparatus of claim 1, wherein:

(a) the incoming video signal comprises a color video signal having red, green, and blue (RGB) components; and

(b) the A/D means, memory means, R/W address generator means, and image reconstruction means are reproduced in triplicate to process the RGB components of the incoming color video signal.

4. The video interface apparatus of claim 1, wherein the line filtering means comprises a low pass filter (LPF).

5. The video interface apparatus of claim 1, wherein the luminance correction means comprises a look-up table.

6. The video interface apparatus of claim 1, wherein the sequential read means comprises a demultiplexer.

7. The video interface apparatus of claim 1, wherein the output memory means comprises first-in first-out (FIFO) memory.

8. The video interface apparatus of claim 1, wherein the DAC means, line filtering means, second A/D means, luminance correction means, sequential read means, and output means are reproduced in triplicate to process the RGB components of an incoming color video signal.

9. A video interface apparatus for converting an incoming interlaced video signal to an outgoing non-interlaced video signal for an LCD flat panel with an arbitrary number of rows and columns, the apparatus comprising:

(a) first A/D means for converting the incoming analog video signal into a corresponding digital signal;

(b) memory means connected to the first A/D means for storing and outputting a plurality of rows of the digital signal;

(c) R/W address generator means connected to the memory means for generating addresses for reading and writing data from and into the memory means;

(d) DAC means connected to the memory means for converting the digital signal output from the memory means to a corresponding analog signal;

(e) line filtering means connected to the DAC means for filtering the analog signal to provide a smoothly varying analog signal;

(f) second A/D means connected to the line filtering means for converting each the smoothly varying analog signal into a corresponding LCD digital signal matching the display resolution of the LCD flat panel;

(g) luminance correction means connected to the second A/D means for correcting the luminance of the LCD digital signal;

(h) sequential read means connected to the luminance correction means for sequentially reading and outputting the corrected LCD digital signal; and

(i) output memory means connected to the sequential read means for storing a row of the LCD digital signal and outputting the row to the LCD flat panel.

10. The video interface apparatus of claim 9, wherein the memory means comprises barrel shifted memory.

11. The video interface apparatus of claim 9, wherein the line filtering means comprises an LPF.

12. The video interface apparatus of claim 9, wherein the luminance correction means comprises a look-up table.

13. The video interface apparatus of claim 9, wherein the sequential read means comprises a demultiplexer.

14. The video interface apparatus of claim 9, wherein the output memory means comprises FIFO memory.

15. The video interface apparatus of claim 9, wherein:

(a) the incoming video signal comprises a color video signal having red, green, and blue (RGB) components; and

(b) the first A/D means, memory means, R/W address generator means, DAC means, line filtering means, second A/D means, luminance correction means, sequential read means, and output means are reproduced in triplicate to process the RGB components of the incoming color video signal.

16. A video interface apparatus for converting an incoming interlaced video signal to an outgoing non-interlaced video signal for an LCD flat panel with an arbitrary number of rows and columns, the apparatus comprising:

(a) first A/D means for converting the incoming analog video signal into a corresponding digital signal;

(b) barrel shifted memory means connected to the first A/D means for storing and outputting a plurality of rows of the digital signal;

(c) R/W address generator means connected to the barrel shifted memory means for generating addresses for reading and writing data from and into the barrel shifted memory means;

(d) DAC means connected to the barrel shifted memory means for converting the digital signal output from the barrel shifted memory means to a corresponding analog signal;

(e) LPF means connected to the DAC means for filtering the analog signal to provide a smoothly varying analog signal;

(f) second A/D means connected to the LPF means for converting the smoothly varying analog signal into a corresponding LCD digital signal matching the display resolution of the LCD flat panel;

(g) luminance correction means connected to the second A/D means for correcting the luminance of the LCD digital signal;

(h) demultiplexer means connected to the luminance correction means for sequentially reading the corrected LCD digital signal; and

(i) FIFO memory means connected to the demultiplexer means for storing a row of the LCD digital signal and outputting the row to the LCD flat panel.

17. The video interface apparatus of claim 16, wherein the luminance correction means comprises a look-up table.

18. The video interface apparatus of claim 16, wherein:

(a) the incoming video signal comprises a color video signal having red, green, and blue (RGB) components; and

(b) the first A/D means, barrel shifted memory means, R/W address generator means, DAC means, LPF means, second A/D means, luminance correction means, demultiplexer means, and FIFO memory means are duplicated in triplicate to process the RGB components of the incoming color video signal.