BRIGHTNESS ADJUSTING DEVICE, DISPLAY DEVICE, COMPUTER-READABLE RECORDING MEDIUM, AND BRIGHTNESS ADJUSTING METHOD

• US 20110043705A1
• Filed: 11/19/2008
• Published: 02/24/2011
• Est. Priority Date: 11/19/2007
• Status: Active Grant

• Current Assignee: Sharp NEC Display Solutions, Ltd. (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: NEC Display Solutions, Ltd. (NEC Corporation)
• Inventors: Matsui, Katsuyuki
• Granted Patent: US 8,648,969 B2
• Time in Patent Office: Days
• US Class Current: 348/687
• CPC Class Codes: G09G 2320/0271 Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
• CPC Class Codes: G09G 2320/0606 Manual adjustment
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2320/064 by time modulation of the brightness of the illumination source
• CPC Class Codes: G09G 2320/0646 Modulation of illumination source brightness and image signal correlated to each other
• CPC Class Codes: G09G 2320/08 Arrangements within a display terminal for setting, manually or automatically, display parameters of the display terminal
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers

Abstract

A brightness adjusting device of the present invention includes: a brightness setting section that accepts input of brightness change information that is an instruction to change a brightness setting value; a brightness adjusting section that performs brightness adjustment by either one of a first brightness adjusting unit and a second brightness adjusting unit having different characteristics from each other, in accordance with the instruction that is input from the brightness setting section; a determining section that determines whether or not the brightness adjustment of the brightness adjusting section switches from the first brightness adjusting unit to the second brightness adjusting unit; and an output section that outputs an alarm when the brightness adjustment of the brightness adjusting section is determined to switch from the first brightness adjusting unit to the second brightness adjusting unit based on a determination result of the determining section.

Claims

1. A brightness adjusting device comprising:

a brightness setting section that accepts input of brightness change information that is an instruction to change a brightness setting value;

a brightness adjusting section that performs brightness adjustment by either one of a first brightness adjusting unit and a second brightness adjusting unit having different characteristics from each other, in accordance with the instruction that is input from the brightness setting section;

a determining section that determines whether or not the brightness adjustment of the brightness adjusting section switches from the first brightness adjusting unit to the second brightness adjusting unit; and

an output section that outputs an alarm when the brightness adjustment of the brightness adjusting section is determined to switch from the first brightness adjusting unit to the second brightness adjusting unit based on a determination result of the determining section.

2. The brightness adjusting device according to claim 1, wherein the output section displays a warning on a screen of a display device in which the brightness adjusting device is provided.

3. The brightness adjusting device according to claim 1, wherein the brightness adjusting section stops brightness change even if brightness change information is input from the brightness setting section when the brightness adjustment of the brightness adjusting section is determined to switch from the first brightness adjusting unit to the second brightness adjusting unit based on the determination result of the determining section.

4. The brightness adjusting device according to claim 1, further comprising a storage section that stores a reference value that is a brightness setting value in a case of the brightness adjustment switching from the first brightness adjusting unit to the second brightness adjusting unit,

wherein the determining section determines whether or not the brightness setting value of the brightness change information that is input from the brightness setting section and the reference value that is stored in the storage section agree, and in a case of the brightness setting value and the reference value agreeing, determines whether or not input of a brightness setting value in which the brightness adjustment switches from the first brightness adjusting unit to the second brightness adjusting unit is made from the brightness setting section, and in a case of input of the brightness setting value in which the brightness adjustment switches from the first brightness adjusting unit to the second brightness adjusting unit being further input, determines that the brightness adjustment of the brightness adjusting section switches from the first brightness adjusting unit to the second brightness adjusting unit.

5. (canceled)

6. A computer-readable recording medium that stores a computer program that causes a computer to function as

a brightness setting section that accepts input of brightness change information that is an instruction to change a brightness setting value;

an adjusting section that performs brightness adjustment by either one of a first brightness adjusting unit and a second brightness adjusting unit having different characteristics from each other, in accordance with the instruction that is input from the brightness setting section;

a determining section that determines whether or not the brightness adjustment of the brightness adjusting section switches from the first brightness adjusting unit to the second brightness adjusting unit; and

an output section that outputs an alarm when the brightness adjustment of the brightness adjusting section is determined to switch from the first brightness adjusting unit to the second brightness adjusting unit based on a determination result of the determining section.

7. A brightness setting method comprising:

a brightness setting step of accepting input of brightness change information that is an instruction to change a brightness setting value;

an adjusting step of performing brightness adjustment by either one of a first brightness adjusting unit and a second brightness adjusting unit having different characteristics from each other, in accordance with the instruction that is input by the brightness setting step;

a determining step of determining whether or not the brightness adjustment of the adjusting step switches from the first brightness adjusting unit to the second brightness adjusting unit; and

an output step of outputting an alarm when the brightness adjustment of the adjusting step is determined to switch from the first brightness adjusting unit to the second brightness adjusting unit based on a determination result of the determining step.