Image processing device

• US 20060098123A1
• Filed: 11/08/2004
• Published: 05/11/2006
• Est. Priority Date: 11/08/2004
• Status: Active Grant

• Current Assignee: Thomson Licensing SA (Vantiva SA)
• Original Assignee: Thomson Licensing SA (Vantiva SA)
• Inventors: Simkine, Antoine
• Granted Patent: US 7,808,556 B2
• Time in Patent Office: Days
• US Class Current: 348/603
• 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 21/42202 environmental sensors, e.g. for detecting temperature, luminosity, pressure, earthquakes
• CPC Class Codes: H04N 21/4318 by altering the content in the rendering process, e.g. blanking, blurring or masking an image region image enhancement or restoration in general G06T5/00
• CPC Class Codes: H04N 21/43615 Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals home Audio Video Interoperability [HAVI] data switching networks H04L12/2805
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114
• CPC Class Codes: H04N 21/4854 for modifying image parameters, e.g. image brightness, contrast
• CPC Class Codes: H04N 5/58 in dependence upon ambient light
• CPC Class Codes: H04N 9/3182 Colour adjustment, e.g. white balance, shading or gamut white balance per se H04N9/73; control of amplitude of colour signals H04N9/68; colour control circuits for displays in general G09G5/02, G09G3/2003, G09G3/3607
• CPC Class Codes: H04N 9/73 Colour balance circuits, e.g. white balance circuits or colour temperature control camera processing pipelines for colour balance H04N23/88

Abstract

The invention provides a video system comprising at least one input for receiving incoming video data and at least one output for delivering outgoing video data to a display device. The system further comprises at least one processor for converting the incoming video data into outgoing video data as a function at least of one item of information delivered by a detecting element. According to an embodiment of the invention, the detecting element is suitable for measuring at least one colorimetric characteristic of an image produced by the display device. According to another embodiment of the invention, the processor converts incoming video data into outgoing video data as a function at least of one item of information delivered by a user. In one embodiment of the invention, the information delivered by the user represents a desired calorimetric response for different incoming data.

Claims

1. A video system comprising:

at least one input for receiving incoming video data, said incoming video data described by first calorimetric data;

at least one output for delivering outgoing video data to a display device, said outgoing data characterized by second colorimetric data;

at least one detecting element for detecting at least one displayed calorimetric characteristic of an image displayed on said display device;

at least one processor (15) for converting said incoming video data into outgoing video data as a function of said at least one detected colorimetric characteristic.

2. The video system of claim 1 further comprising a user control communicating with said at least one processor to allow said user to cause said processor to convert incoming video data into outgoing video data as a function of a color characteristic different from said measured color characteristic.

3. The video system of claim 1 wherein said at least one processor converts incoming data characterized by a first set of color characteristics into outgoing data having a second set of outgoing color characteristics different from the first as a function of said measured displayed color characteristic.

4. The video system of claim 1 wherein said first and second sets of color characteristics comprise first and second color spaces respectively.

5. The video system of claim 1 further comprising:

a housing including at least two connectors (8;

10) for coupling to said processor for transmitting, respectively, said incoming video data and said outgoing video data.

6. The video system of claim 4 further comprising an indicator for indicating an ambient condition of said video system.

7. The video system of claim 1 wherein said detecting element comprises a sensor.

8. The video system of claim 7 wherein said sensor is configured to measure red, green and blue levels of said displayed image.

9. The video system of claim 1 wherein said detecting element is movable in relation to said processor. The video system of claim 1 wherein said detecting element communicates with said processor by a wireless link.

10. The video system according to claim 1 further comprising a selector (16) for selecting among a plurality of processing options for said incoming video data, depending on the rendering desired by the user.

11. The video system according to claim 1 wherein said processor is configured to send said display device reference data corresponding to a reference image and permitting the display of at least one image on said display device, and said processor is configured to determine the response of said display device as a function at least of one item of information transmitted by said detecting element when the image is displayed.

12. A home theater system, comprising:

a video source;

a projection system comprising a projector and a screen;

a video processor for receiving data from said video source and transmitting the data, after processing, to said projector;

at least one detecting element for measuring at least one displayed color characteristic of an image displayed on said projector, said processor converting said incoming video data into outgoing video data as a function of said at least one measured displayed color characteristic provided by said detecting element.

13. A method for processing video data, wherein the incoming video data are converted into outgoing video data by applying a correction function that takes into account the calorimetric response of at least one device to which said outgoing data are being sent.

14. A method for processing video data, wherein the incoming video data are converted into outgoing video data by applying a correction function that takes into account the calorimetric response of at least one device such to which said outgoing data are being sent.

15. A theater screening room, comprising:

a video source comprising a player of a medium on which video data are recorded or a video data receiver,

at least one projection system comprising a projector and

a screen disposed in the screening room,

at least one video data processing device for receiving data from said source and transmitting them, after processing, to said projector.

16. A method for processing video data, wherein the incoming video data are converted into outgoing video data by applying a correction function that takes into account the calorimetric response of at least one device to which said outgoing data are being sent.

17. A video system comprising:

at least one input for receiving incoming video data;

at least one output for delivering outgoing video data to a display device;

at least one processor for converting said incoming video data into outgoing video data based upon information provided by a detecting element, said detecting element detecting colorimetric characteristics of images displayed on said display.

18. The system of claim 17 wherein said detecting element comprises an optical sensor.

19. The system of claim 18 further comprising user operable controls for allowing a user to select desired colorimetric response characteristics for said display.

20. The system of claim 17 wherein said display comprises a projection display.

21. A video system comprising:

at least one input for receiving incoming video data;

at least one output for delivering outgoing video data to a display device;

at least one processor for converting said incoming video data into outgoing video data based upon a desired calorimetric response selected by a user via a user selection means.