Patent US6292228B1 successfully refreshed from Google Patents.
US6292228B1
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Device and method for auto-adjustment of image condition in display using data representing both brightness or contrast and color temperature
Assignee: LG Electronics Inc
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Filing: 1999-05-06
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Granted: 2001-09-18
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Expires: 2019-05-06
Abstract
Abstract A device and method for automatically adjusting an image condition in a display is, disclosed. The present device and method optimizes the image condition of a display according to individual preferences by taking into account the brightness and color temperature set initially by a user. Particularly, the present invention includes a photo sensor to detect the environmental illumination and a micro processor utilizing the detected data to appropriately adjust the image condition with respect to a user <CUSTOM-CHARACTER FILE="US06292228-20010918-P00001.TIF" ID="CUSTOM-CHARACTER-00001"> preference.
Inventors
- 👤 Yong-jin Cho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:46
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/20; G; G09; G09G; G09G5/00; H04N21/00; H04N21/40; H04N21/41; H04N21/422; H04N21/42202; H04N21/43; H04N21/431; H04N21/4318; H04N21/47; H04N21/485; H04N21/4854; H04N5/44; H04N5/57; H04N5/58; H04N9/00; H04N9/64; H04N9/73; G09G2320/00; G09G2320/06; G09G2320/0606; G09G2320/0626; G09G2320/0666; G09G2360/00; G09G2360/14; G09G2360/144; G09G5/02
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
87 words
A device for adjusting an image condition comprising: a sensor unit sensing two color variables that represent both an environmental brightness and a color temperature, and outputting the sensed data; a video processor receiving and digitizing the output signals from the sensor unit to obtain the environmental brightness and color temperature, and adjusting the brightness, contrast, and color temperature of an image utilizing the obtained data in consideration of a prescribed brightness, contrast and color temperature; and a display unit displaying the adjusted image on a display.
Claim 2
Independent Claim
87 words
A device for adjusting an image condition comprising: a sensor unit sensing two color variables that represent both an environmental brightness and a color temperature, and outputting the sensed data; a video processor receiving and digitizing the output signals from the sensor unit to obtain the environmental brightness and color temperature, and adjusting the brightness, contrast, and color temperature of an image utilizing the obtained data in consideration of a prescribed brightness, contrast and color temperature; and a display unit displaying the adjusted image on a display.
Claim 3
Dependent Claim
54 words
A device of claim 1 , wherein the sensor unit is a photo sensor outputting the sensed data by two electrical signals; and wherein the video processor digitizes the two electrical signals to determine the environmental brightness and the color temperature, wherein the prescribed brightness, contrast and color temperature are selected by a user.
Claim 4
Dependent Claim
54 words
A device of claim 2 , wherein the photo sensor outputs the two electrical signals of cyan and yellow; and wherein the video processor determines the environmental brightness by summing the outputs of cyan and yellow, and determines the environmental color temperature by taking the ratio of the output cyan to the output yellow.
Claim 5
Dependent Claim
87 words
A device of claim 2 , wherein the video processor comprises: a first storage unit storing the brightness, contrast and color temperature selected by the user; and a micro processor determining the environmental brightness and color temperature, and determining relative variances of brightness, contrast and color temperature according to the determined environmental brightness and color temperature, said micro processor outputting control signals to automatically adjust the brightness, contrast and color temperature of the image based upon the relative variances and the stored brightness, contrast and color temperature.
Claim 6
Dependent Claim
63 words
A device of claim 4 , wherein the display unit displays the image on a color display tube; and wherein the video processor further comprises: a video pre-amplifier amplifying a video signal according to the control signals output by the micro processor; and a video output unit processing the amplified video signal and displaying the processed video signal on the color display tube.
Claim 7
Dependent Claim
134 words
A device of claim 4 , wherein the micro processor comprises: a second storage unit storing reference environmental values of brightness and color temperature, wherein the first storage unit is located in the micro processor; a detection unit determining the environmental brightness and color temperature based upon the two electrical signals from the sensor unit; a comparator unit calculating average environmental values of brightness and color temperature for a predetermined time period, and comparing the average environmental values to the reference environmental values stored in the second storage unit to output compared values; and a control unit determining relative variances utilizing the compared values, and outputting the control signals to automatically adjust the image by an amount based upon the determined relative variances and the brightness, contrast, and color temperature selected by the user.
Claim 8
Dependent Claim
51 words
A device of claim 6 , wherein the sensor unit outputs electrical signals of cyan and yellow; and the detection unit determines the environmental brightness by summing the outputs of cyan and yellow, and determines the environmental color temperature by taking the ratio of the output cyan to the output yellow.
Claim 9
Dependent Claim
58 words
A device of claim 1 , wherein the video processor automatically adjusts the brightness, contrast and color temperature of an image if a user selects an auto-regulation mode, and wherein the video processor uses the same two color variables to concurrently determine both the environmental brightness and the color temperature, wherein the environmental brightness includes contrast and brightness.
Claim 10
Dependent Claim
49 words
A device of claim 1 , wherein the video processor automatically adjusts the brightness and contrast of an image if a user selects an auto-regulation mode for brightness and contrast, and automatically adjusts the color temperature of an image if the user selects an auto-regulation mode for color temperature.
Claim 11
Dependent Claim
40 words
A device of claim 1 , wherein the video processor automatically adjusts the brightness, contrast, and color temperature of an image by gradually increasing or decreasing the brightness, contrast and color temperature in amounts determined by the two color variables.
Claim 12
Independent Claim
91 words
A method for automatically adjusting an image condition comprising: (a) sensing data representing an environmental brightness and color temperature, and outputting the sensed data; (b) receiving and digitizing the same sensed data to obtain both the environmental brightness and the color temperature, and automatically adjusting one of the brightness, with the color temperature, and the contrast with the color temperature of an image utilizing the obtained same sensed data in consideration of a brightness, contrast and color temperature selected by a user; and (c) displaying the adjusted image on a display.
Claim 13
Independent Claim
91 words
A method for automatically adjusting an image condition comprising: (a) sensing data representing an environmental brightness and color temperature, and outputting the sensed data; (b) receiving and digitizing the same sensed data to obtain both the environmental brightness and the color temperature, and automatically adjusting one of the brightness, with the color temperature, and the contrast with the color temperature of an image utilizing the obtained same sensed data in consideration of a brightness, contrast and color temperature selected by a user; and (c) displaying the adjusted image on a display.
Claim 14
Dependent Claim
37 words
A method of claim 11 , wherein in step (a), outputting the sensed data by two electrical signals; and in step (b) digitizing the two electrical signals to concurrently determine the environmental brightness and the color temperature.
Claim 15
Dependent Claim
51 words
A method of claim 12 , wherein in step (a), outputting electrical signals of cyan and yellow; and in step (b), determining the environmental brightness by summing the outputs of cyan and yellow, and determining the environmental color temperature by talking the ratio of the output cyan to the output yellow.
Claim 16
Dependent Claim
79 words
A method of claim 12 , wherein step (b) comprises: (aa) storing the brightness, contrast and color temperature selected by the user; (bb) determining the environmental brightness and color temperature, and determining relative variances of brightness, contrast and color temperature according to the determined environmental brightness: and color temperature; and (cc) outputting control signals to automatically adjust the brightness, contrast and color temperature of the image based upon the relative variances and the stored brightness, contrast and color temperature.
Claim 17
Dependent Claim
38 words
A method of claim 14 , wherein step (b) further comprises: amplifying a video signal according to the output control signals; and processing the amplified video signal and displaying the processed video signal on the color display tube.
Claim 18
Dependent Claim
101 words
A method of claim 14 , wherein step (bb) comprises: storing reference environmental values of brightness and color temperature; determining the environmental brightness and color temperature based upon the at least two electrical signals; calculating average environmental values of brightness and color temperature for a predetermined time period, and comparing the average environmental values to the stored reference environmental values to output compared values; and determining relative variances utilizing the compared values, and outputting control signals to automatically adjust the image by an amount based upon the determined relative variances and the brightness, contrast, and color temperature selected by the user.
Claim 19
Dependent Claim
48 words
A method of claim 16 , wherein the two electrical signals are cyan and yellow; and the environmental brightness is determined by summing the outputs of cyan and yellow, and the environmental color temperature is determined by taking the ratio of the output cyan to the output yellow.
Claim 20
Dependent Claim
26 words
A method of claim 11 , wherein the brightness, contrast and color temperature of an image is automatically adjusted if the user selects an auto-regulation mode.
Claim 21
Dependent Claim
48 words
A method of claim 11 , wherein the brightness and contrast of an image is automatically adjusted if the user selects an auto-regulation mode for brightness and contrast, and the color temperature of an image is automatically adjusted if the user selects an auto-regulation mode for color temperature.
Claim 22
Dependent Claim
30 words
A method of claim 11 , wherein the brightness, contrast, and color temperature of an image is automatically adjusted by gradually increasing or decreasing the brightness, contrast and color temperature.
Claim 23
Dependent Claim
33 words
The device of claim 10 , wherein the automatic adjustments are made one of periodically, continuously and at every prescribed amount of change of one of the environmental brightness and the color temperature.
Claim 24
Dependent Claim
32 words
The device of claim 21 , wherein the prescribed amount of change of the environmental brightness is 50 lux and the prescribed amount of change of the color temperature is 1000° K.
Claim 25
Dependent Claim
13 words
The device of claim 1 , wherein the color variables are subtractive colors.
Claim 26
Dependent Claim
18 words
The device of claim 1 , wherein the sensor unit senses the two color variables without user awareness.
Claim 27
Dependent Claim
22 words
The method of claim 11 , wherein the sensing data representing an environmental brightness and color temperature is performed without user awareness.
Claim 28
Dependent Claim
16 words
The method of claim 11 , wherein the same sensed data is exactly two color signals.
Claim 29
Independent Claim
134 words
A device for adjusting an image condition comprising: a sensor unit sensing an environmental brightness and color temperature, and outputting the sensed data; a video processor receiving and digitizing the output signals from the sensor unit to obtain the environmental brightness and color temperature, and adjusting the brightness, contrast, and color temperature of an image utilizing the obtained data in consideration of a brightness, contrast and color temperature selected by a user; and a display unit displaying the adjusted image on a display, wherein the sensor unit is a photo sensor that outputs electrical signals of cyan and yellow, and wherein the video processor determines the environmental brightness by summing the outputs of cyan and yellow, and determines the environmental color temperature by taking a ratio of the output yellow and the output cyan.
Claim 30
Independent Claim
134 words
A device for adjusting an image condition comprising: a sensor unit sensing an environmental brightness and color temperature, and outputting the sensed data; a video processor receiving and digitizing the output signals from the sensor unit to obtain the environmental brightness and color temperature, and adjusting the brightness, contrast, and color temperature of an image utilizing the obtained data in consideration of a brightness, contrast and color temperature selected by a user; and a display unit displaying the adjusted image on a display, wherein the sensor unit is a photo sensor that outputs electrical signals of cyan and yellow, and wherein the video processor determines the environmental brightness by summing the outputs of cyan and yellow, and determines the environmental color temperature by taking a ratio of the output yellow and the output cyan.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-09-17 | 2005-03-19 | 2005-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-09-17 | 2009-03-19 | 2009-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-09-17 | 2013-03-19 | 2013-09-18 | $7700.00 | Window Closed / Lapsed |