VIDEO IMPROVEMENT PROCESSOR

• US 20100149418A1
• Filed: 09/11/2009
• Published: 06/17/2010
• Est. Priority Date: 09/21/2002
• Status: Abandoned Application

• Current Assignee: Shomi Technologies Corporation
• Original Assignee: Shomi Technologies Corporation
• Inventors: Bushway, Vernon, Freed, Karol, Burnworth, Randy L.
• Application Number:
  US12/558,205
• Publication Number:
  US 20100149418A1
• Time in Patent Office: Days
• US Class Current: 348/572
• CPC Class Codes: H04N 5/20 Circuitry for controlling amplitude response
• CPC Class Codes: H04N 5/208 for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction

Abstract

A video device includes a video processor operable to upgrade a video image. The video device is capable of displaying video images. The video device includes a video input configured to receive a composite video signal. The composite video signal includes synchronization information, both vertical and horizontal, a luminance and a chrominance. The video device includes a video processor configured to separate the composite signal into separate paths. The video processor is configured to perform video functions on the separate paths individually and combine the separate paths to produce an upgraded video image. The video device also includes a video output configured to receive the upgraded video imaged from the video processor and output the upgraded video image to a display.

Claims

1. An apparatus for use in a system capable of displaying video images, the apparatus comprising:

a video input configured to receive a composite video signal, the composite video signal comprising a luminance and a chrominance;

a video processor configured to separate the composite signal into separate luminance and chrominance paths, wherein the video processor is configured to perform video functions on the separate paths individually and combine the separate paths to produce an upgraded video image; and

a video output configured to receive the combined upgraded video image from the video processor and output the upgraded video image to a display.

2. The apparatus as set forth in claim 1, wherein at least one of the functions is an additive light function and wherein the video processor comprises an additive light circuit configured to perform the additive light function on a combined signal comprising at least two of the separate paths.

3. The apparatus as set forth in claim 1, wherein at least one of the functions is an high-knee gamma function comprising a high-knee in a parabolic curve and wherein the video processor comprises a high-knee amplifier configured to perform linear transition from the high-knee gamma function to a linear function one of the separate paths.

4. The apparatus as set forth in claim 1, the video processor comprising a flashlight circuit configured to perform a threshold selected video black expansion function on one of the separate paths.

5. The apparatus as set forth in claim 4, wherein said black expansion function adjusts a black reference black reference below 7.5 on the Institute of Radio Engineers (IRE) standard.

6. The apparatus as set forth in claim 1, the video processor comprising a burst circuit, the burst circuit configured to identify a burst flag in the composite signal, perform an analog-to-digital conversion on one of the paths and amplify the digitized path.

7. The apparatus as set forth in claim 1, further comprising a main video channel configured to output the upgraded video image and an uncorrected video image in the composite video signal.

8. The apparatus as set forth in claim 1, the video processor comprising:

an automatic frequency suppressor circuit;

an enhanced frequency switch; and

a plurality of delay paths.

9. A video display system comprising:

a display;

a video input configured to receive a composite video signal, the composite video signal comprising a luminance and a chrominance;

a video processor configured to separate the composite signal into separate luminance and chrominance paths, wherein the video processor is configured to perform video functions on the separate paths individually and combine the separate paths to produce an upgraded video image; and

a video output configured to receive the combined upgraded video imaged from the video processor and output the upgraded video image to the display.

10. The system as set forth in claim 9, wherein at least one of the functions is an additive light function and wherein the video processor comprises an additive light circuit configured to perform the additive light function on a combined signal comprising at least two of the separate paths.

11. The system as set forth in claim 9, wherein at least one of the functions is an high-knee gamma function comprising a high-knee in a parabolic curve and wherein the video processor comprises a high-knee amplifier configured to perform the linear transition from the high-knee gamma function to a linear function high-knee gamma function on one of the separate paths.

12. The system as set forth in claim 9, the video processor comprising a flashlight circuit configured to perform a threshold selected video black expansion function on one of the separate paths.

13. The system as set forth in claim 12, wherein said black expansion function adjusts a black reference black reference below 7.5 on the Institute of Radio Engineers (IRE) standard.

14. The system as set forth in claim 9, the video processor comprising a burst circuit, the burst circuit configured to identify a burst flag in the composite signal, perform an analog-to-digital conversion on one of the paths and amplify the digitized path.

15. The system as set forth in claim 9, further comprising a main video channel configured to output the upgraded video image and an uncorrected video image in the composite video signal.

16. The system as set forth in claim 9, the video processor comprising:

an automatic frequency suppressor circuit;

an enhanced frequency switch; and

a plurality of delay paths.

17. A method for enhancing video, the method comprising:

receiving a video signal according to a standard;

separating the video signal into a number of component signals;

performing special processing on respective component signals; and

combining the respective component signals to form an upgraded video signal.

18. The method as set forth in claim 17, wherein the special processing comprises performing an additive light function on a combined signal comprising at least two of the separate components.

19. The method as set forth in claim 17, wherein the special processing comprises performing a high-knee gamma function on one of the separate components, the high-knee gamma function comprising a high-knee in a parabolic curve.

20. The method as set forth in claim 17, wherein the special processing comprises performing a flashlight function on one of the separate components.