US6611249B1 — System and method for providing a wide aspect rat…

Claim 1

Independent Claim 214 words

A high-precision flat panel monitor for displaying information originated by a host computer, said precision flat panel monitor comprising: an image data input for coupling to said host computer to receive image data; a liquid crystal display screen for displaying a representation of said image data, said liquid crystal display screen further comprising a first white light source of a first color temperature and a second white light source of a second color temperature, wherein said first and second white light sources are positioned to illuminate said liquid crystal display screen with light having a net color temperature that is adjustable by adjusting a first luminance level of said first white light source and a second luminance level of said second white light source; a white-balance adjustment control input for coupling to said host computer to receive a white-balance adjustment control signal, wherein said white-balance adjustment control signal further comprises a first signal for controlling said first luminance level and a second signal for controlling said second luminance level; and a controller circuit responsive to said white-balance adjustment control signal for adjusting a white-balance of said liquid crystal display screen, wherein grayscale resolution of said liquid crystal display screen is substantially unaffected by said adjusting of said white-balance of said liquid crystal display screen.

Claim 2

Dependent Claim 214 words

A high-precision flat panel monitor for displaying information originated by a host computer, said precision flat panel monitor comprising: an image data input for coupling to said host computer to receive image data; a liquid crystal display screen for displaying a representation of said image data, said liquid crystal display screen further comprising a first white light source of a first color temperature and a second white light source of a second color temperature, wherein said first and second white light sources are positioned to illuminate said liquid crystal display screen with light having a net color temperature that is adjustable by adjusting a first luminance level of said first white light source and a second luminance level of said second white light source; a white-balance adjustment control input for coupling to said host computer to receive a white-balance adjustment control signal, wherein said white-balance adjustment control signal further comprises a first signal for controlling said first luminance level and a second signal for controlling said second luminance level; and a controller circuit responsive to said white-balance adjustment control signal for adjusting a white-balance of said liquid crystal display screen, wherein grayscale resolution of said liquid crystal display screen is substantially unaffected by said adjusting of said white-balance of said liquid crystal display screen.

Claim 3

Dependent Claim 65 words

The high-precision flat panel monitor according to claim 1 further comprising: a color measurement input configured for coupling to a colorimeter to receive color measurement data associated with said liquid crystal display screen; and a color measurement output configured for coupling to said host computer to transmit said color measurement data of said liquid crystal display screen for color-correcting said representation of said image data.

Claim 4

Dependent Claim 32 words

The high-precision flat panel monitor according to claim 1 wherein said controller circuit comprises an inter-integrated circuit (I 2 C) interface for receiving said white-balance adjustment control signal from said host computer.

Claim 5

Dependent Claim 29 words

The high-precision flat panel monitor according to claim 1 wherein said image data is transmitted from said host computer to said high-precision flat panel monitor via a digital interface.

Claim 6

Dependent Claim 20 words

The high-precision flat panel monitor according to claim 4 wherein said digital interface comprises a low-voltage differential signal (LVDS) interface.

Claim 7

Dependent Claim 34 words

The high-precision flat panel monitor according to claim 2 wherein said color measurement output comprises an inter-integrated circuit interface for transmitting said color measurement data from said high-precision flat-panel monitor to said host computer.

Claim 8

Dependent Claim 34 words

The high-precision flat panel monitor according to claim 1 wherein said liquid crystal display screen comprises optical compensation films for providing increased off axis angle viewing capability in both the vertical and horizontal directions.

Claim 9

Dependent Claim 25 words

The high-precision flat panel monitor according to claim 1 wherein said liquid crystal display screen has a large viewing area and a wide aspect ratio.

Claim 10

Dependent Claim 27 words

The high-precision flat panel monitor according to claim 1 wherein said liquid crystal display screen further comprises an in-plane switching liquid crystal layer for improved viewing angle.

Claim 11

Dependent Claim 28 words

The high-precision flat panel monitor according to claim 1 wherein said liquid crystal display screen further comprises a liquid crystal layer of anti-ferroelectric material for improved viewing angle.

Claim 12

Dependent Claim 30 words

The high-precision flat panel monitor according to claim 1 wherein said liquid crystal display screen further comprises a plurality of pixels having a uniform pixel pitch of approximately 0.23 mm.

Claim 13

Dependent Claim 56 words

The high-precision flat panel monitor according to claim 1 further comprising a light pipe optically coupled to receive light from said first white light source and said second white light source, said light pipe for illuminating said liquid crystal display screen with said light from said first white light source and said second white light source.

Claim 14

Dependent Claim 29 words

The high-precision flat panel monitor according to claim 12 wherein said light pipe further comprises an extraction pattern designed to uniformly distribute light to said liquid crystal display screen.

Claim 15

Dependent Claim 221 words

A high-precision flat panel monitor comprising: an image data input for coupling to said host computer to receive image data; a liquid crystal display screen for displaying said image data, said liquid crystal display screen including: a first white light source of a first color temperature; a second white light source of a second color temperature different from said first color temperature, said first and second white light sources positioned to illuminate said liquid crystal display screen with light having a net color temperature that is dependent on an intensity of said first white light source and an intensity of said second white light source wherein said first and said second white light sources alter said net color temperature of said light, within a predetermined color temperature range, by controlling said intensity of said first white light source and said intensity of said second white light source; and a white-balance adjustment control input for coupling to said host computer to receive a white-balance adjustment control signal, said white-balance adjustment control signal for adjusting said intensity of said first white light source and said intensity of said second white light source to adjust said net color temperature of said liquid crystal display screen, wherein grayscale resolution of said liquid crystal display screen is substantially unaffected by adjustment of said net color temperature.

Claim 16

Dependent Claim 221 words

A high-precision flat panel monitor comprising: an image data input for coupling to said host computer to receive image data; a liquid crystal display screen for displaying said image data, said liquid crystal display screen including: a first white light source of a first color temperature; a second white light source of a second color temperature different from said first color temperature, said first and second white light sources positioned to illuminate said liquid crystal display screen with light having a net color temperature that is dependent on an intensity of said first white light source and an intensity of said second white light source wherein said first and said second white light sources alter said net color temperature of said light, within a predetermined color temperature range, by controlling said intensity of said first white light source and said intensity of said second white light source; and a white-balance adjustment control input for coupling to said host computer to receive a white-balance adjustment control signal, said white-balance adjustment control signal for adjusting said intensity of said first white light source and said intensity of said second white light source to adjust said net color temperature of said liquid crystal display screen, wherein grayscale resolution of said liquid crystal display screen is substantially unaffected by adjustment of said net color temperature.

Claim 17

Independent Claim 204 words

A system for color-correcting a high-precision flat panel monitor, said flat panel monitor having a first white light source of a first color temperature and a second white light source of a second color temperature configured for adjusting white-balance of said high-precision flat panel monitor, the system comprising: a digital computer for coupling to transmit image data to said high-precision flat panel monitor, said digital computer having a memory stored color look-up table (LUT) for translating an uncorrected color value to a corrected color value according to a gamma curve, said digital computer further having a white-balance adjustment control output configured for coupling to said high-precision flat panel monitor to control white-balance by varying intensity levels of said first white light source and said second white light source without substantially affecting a grayscale resolution of the monitor; and a calorimeter for coupling to said digital computer, said calorimeter for measuring color characteristics data of said high-precision flat panel monitor during a color calibration process and for transmitting said color characteristics data to said digital computer during said color calibration process, wherein said digital computer is for adjusting said gamma curve according to any discrepancies between said color measurement data and a predefined color profile.

Claim 18

Independent Claim 204 words

A system for color-correcting a high-precision flat panel monitor, said flat panel monitor having a first white light source of a first color temperature and a second white light source of a second color temperature configured for adjusting white-balance of said high-precision flat panel monitor, the system comprising: a digital computer for coupling to transmit image data to said high-precision flat panel monitor, said digital computer having a memory stored color look-up table (LUT) for translating an uncorrected color value to a corrected color value according to a gamma curve, said digital computer further having a white-balance adjustment control output configured for coupling to said high-precision flat panel monitor to control white-balance by varying intensity levels of said first white light source and said second white light source without substantially affecting a grayscale resolution of the monitor; and a calorimeter for coupling to said digital computer, said calorimeter for measuring color characteristics data of said high-precision flat panel monitor during a color calibration process and for transmitting said color characteristics data to said digital computer during said color calibration process, wherein said digital computer is for adjusting said gamma curve according to any discrepancies between said color measurement data and a predefined color profile.

Claim 19

Dependent Claim 39 words

The system as described in claim 15 wherein said predefined color profile describes color characteristics of a reference display screen such that color characteristics of said high-precision flat panel monitor substantially match color characteristics of said reference display screen.

Claim 20

Dependent Claim 26 words

The system as described in claim 15 wherein said digital computer further comprises a communication port for receiving said predefined color profile from a computer network.

Claim 21

Dependent Claim 55 words

The system as described in claim 17 wherein said predefined color profile describes color characteristics of a master flat panel monitor such that said high-precision flat panel monitor is calibrated to match said master flat panel monitor, and wherein said master flat panel monitor is remotely coupled to said digital computer via said computer network.

Claim 22

Dependent Claim 34 words

The system as described in claim 15 wherein said predefined color profile describes color characteristics of said high-precision flat panel monitor and wherein said predefined color profile is generated at a preceding calibration session.

Claim 23

Dependent Claim 34 words

The system as described in claim 15 further comprising electronic circuitry for frame-rate modulating grayscale values stored in said color LUT such that visual artifacts in said high-precision flat panel monitor are substantially reduced.

Claim 24

Dependent Claim 198 words

A computer-usable medium having computer-readable program code embodied therein for causing a computer to perform a method of color-calibrating a flat panel display, said flat panel display having a liquid crystal display screen configured to be illuminated by a first white light source with a first color temperature and a second white light source with a second color temperature, said method comprising the steps of: displaying on said flat panel display an image having a predefined white-balance value; determining color characteristics of said flat panel display, said color characteristics being provided by a light-sensing device coupled to said flat panel display, said color characteristics further including white-balance data and gamma values of said flat panel display; comparing said white-balance data to a predetermined reference white-balance value; and transmitting a white-balance adjustment control signal to said flat panel display to adjust a color temperature of said flat panel display by adjusting a first intensity level of said first light source and a second intensity level of said second light source without substantially affecting a grayscale resolution of the display, wherein white-balance adjustment control signal is generated according to differences between said white-balance data and said predetermined reference white-balance value.

Claim 25

Dependent Claim 198 words

A computer-usable medium having computer-readable program code embodied therein for causing a computer to perform a method of color-calibrating a flat panel display, said flat panel display having a liquid crystal display screen configured to be illuminated by a first white light source with a first color temperature and a second white light source with a second color temperature, said method comprising the steps of: displaying on said flat panel display an image having a predefined white-balance value; determining color characteristics of said flat panel display, said color characteristics being provided by a light-sensing device coupled to said flat panel display, said color characteristics further including white-balance data and gamma values of said flat panel display; comparing said white-balance data to a predetermined reference white-balance value; and transmitting a white-balance adjustment control signal to said flat panel display to adjust a color temperature of said flat panel display by adjusting a first intensity level of said first light source and a second intensity level of said second light source without substantially affecting a grayscale resolution of the display, wherein white-balance adjustment control signal is generated according to differences between said white-balance data and said predetermined reference white-balance value.

Claim 26

Dependent Claim 40 words

The computer-usable medium as described in claim 21 wherein said method further comprises the step of repeating said displaying determining, comparing, and transmitting steps until said white-balance data of said flat panel display approximately matches said predetermined reference white-balance value.

Claim 27

Dependent Claim 24 words

The computer-usable medium as described in claim 21 wherein said flat panel display comprises a large area wide aspect ratio liquid crystal display screen.

Claim 28

Dependent Claim 140 words

The computer-usable medium as described in claim 23 wherein said large area flat panel display is non-emissive and further comprises: a first white light source of a first color temperature; and a second white light source of a second color temperature different from said first color temperature, said first and second white light sources positioned to illuminate said large area flat panel display with light having a net color temperature that is dependent on an intensity of said first white light source and an intensity of said second white light source wherein said first and said second white light sources alter said net color temperature of said light, within a predetermined color temperature range, wherein said intensity of said first white light source and said intensity of said second white light source are controlled by said white-balance adjustment control signal.

Claim 29

Dependent Claim 34 words

The computer-usable medium as described in claim 21 wherein said white-balance adjustment control signal and said color characteristics data are transmitted between said computer and said flat panel display via an inter-integrated circuit interface.

Claim 30

Dependent Claim 15 words

The computer-usable medium as described in claim 21 wherein said light-sensing device comprises a colorimeter.

Claim 31

Dependent Claim 31 words

The computer-usable medium as described in claim 26 wherein said calorimeter further comprises attachment means for attaching to said flat panel display without affecting color characteristics of said flat panel display.

Claim 32

Dependent Claim 66 words

The computer-usable medium as described in claim 21 wherein said method further comprises the steps of: comparing said gamma values of said flat panel display to a predetermined reference gamma curve; and modifying a color look-up table stored in a memory unit of said computer to alter said gamma values of said flat panel display until said gamma values approximately match said predetermined reference gamma curve.

Claim 33

Dependent Claim 28 words

The computer-usable medium as described in claim 28 wherein said method further comprises the step of frame-rate modulating said gamma values such that visual artifacts are substantially reduced.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2006-08-25	2007-02-24	2007-08-26	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2010-08-25	2011-02-24	2011-08-26	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2014-08-25	2015-02-24	2015-08-26	$7700.00	Window Closed / Lapsed

System and method for providing a wide aspect ratio flat panel display monitor independent white-balance adjustment and gamma correction capabilities

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