# US 8,570,348 B2 · Brightness adjuster, adjustment method, and electronic system utilizing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,570,348 B2 - Document ID: US8570348B2 - Status: Granted - Kind: B2 - Application number: 12/559,442 - Filed: 2009-09-14 - Published: 2010-03-18 - Granted: 2013-10-29 - Earliest claimed: 2008-09-15 - Assignees: Chimei Innolux Corporation - Applicants: Shou-Cheng Wang - Inventors: Shou-Cheng Wang - Web page: https://patentgrep.com/patent/US8570348B2 ## CPC - H04N 5/58: in dependence upon ambient light - 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)} - H04N 21/44008: {involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream (arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59)} - H04N 21/4436: {Power management, e.g. shutting down unused components of the receiver (power management in computer systems G06F1/3203; hibernate or awake process in computer systems G06F9/4418)} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A brightness adjuster generating an image output to a panel, which displays the corresponding image according to the image output. The image output includes a red output signal, a green output signal, and a blue output signal. The brightness adjuster includes a determination unit, a calculation unit, and a digital to analog converting unit. The determination unit determines a main input signal according to a red input signal, a green input signal, and a blue input signal. The calculation unit adjusts the red, the green, and the blue input signals according to the main input signal. The digital to analog converting unit transforms the adjusted red, the adjusted green, and the adjusted blue input signals into the red, the green, and the blue output signals. ## Claims ### Claim 1 A brightness adjuster generating an image output to a panel, which displays a corresponding image according to the image output, wherein the image output comprises a red output signal, a green output signal, and a blue output signal, comprising: a determination unit receiving a red input signal, a green input signal, and a blue input signal, and determining a main input signal according to the red input signal, the green input signal, and the blue input signal; a calculation unit receiving the red input signal, the green input signal, and the blue input signal, and adjusting the red, the green, and the blue input signals according to the main input signal; a digital to analog converting unit transforming the adjusted red, the adjusted green, and the adjusted blue input signals into the red, the green, and the blue output signals; and a data converting unit directly receiving the red, the green, and the blue input signals and generating a white signal according to the red, the green, and the blue input signals. ### Claim 2 (depends on 1) The brightness adjuster as claimed in claim 1, wherein the calculation unit adjusts the white signal according to the main input signal and the digital to analog converting unit transforms the adjusted white signal into a white output signal to the panel. ### Claim 3 (depends on 1) The brightness adjuster as claimed in claim 1, wherein the determination unit determines a maximum input signal among the red, the green, and the blue input signals to be the main input signal. ### Claim 4 (depends on 1) The brightness adjuster as claimed in claim 1, wherein the determination unit processes the red, the green, and the blue input signals according to a preset condition and determines a maximum input signal among the processed red, the processed green, and the processed blue input signals, wherein the maximum input signal serves as the main input signal, and wherein the panel further comprises a plurality of luminiferous devices, and wherein the preset condition relates to the characteristics of the luminiferous devices. ### Claim 5 (depends on 1) The brightness adjuster as claimed in claim 1, wherein the calculation unit adjusts the red, the green, and the blue input signals according to a preset condition and the main input signal, wherein the panel further comprises a plurality of luminiferous devices, and wherein the preset condition relates to the characteristics of the luminiferous devices, wherein the preset condition relates to the intensity of environment light, wherein the preset condition relates to a set, which is set by a user, and wherein the preset condition relates to the red, the green, and the blue input signals. ### Claim 6 A brightness adjustment method generating an image output to a panel, which displays a corresponding image according to the image output, wherein the image output comprises a red output signal, a green output signal, and a blue output signal, comprising: receiving a red input signal, a green input signal, and a blue input signal; determining a main input signal according to the red, the green, and the blue input signals; utilizing a data converting unit to generate a white signal according to the red, the green, and the blue input signals, wherein the data converting unit directly receives the red, the green, and the blue input signals; adjusting the red, the green, and the blue input signals according to the main input signal; and transforming the adjusted red, the adjusted green, and the adjusted blue input signals into the red, the green, and the blue output signals, wherein the red, the green, and the blue input signals are digital signals and the red, the green, and the blue output signals are analog signals. ### Claim 7 (depends on 6) The brightness adjustment method as claimed in claim 6, further comprising: adjusting the white signal according to the main input signal; and transforming the adjusted white signal into a white output signal, wherein the white signal is a digital signal and the white output signal is an analog signal. ### Claim 8 (depends on 6) The brightness adjustment method as claimed in claim 6, wherein the main input signal is a maximum input signal among the red, the green, and the blue input signals. ### Claim 9 (depends on 6) The brightness adjustment method as claimed in claim 6, wherein the determining step comprises: processing the red, the green, and the blue input signals according to a preset condition; and finding a maximum input signal among the processed red, the processed green, and the processed blue input signals and serving the maximum input signal as the main input signal, wherein the panel further comprises a plurality of luminiferous devices and wherein the preset condition relates to the characteristic of the luminiferous devices. ### Claim 10 (depends on 6) The brightness adjustment method as claimed in claim 6, further comprising, adjusting the red, the green, and the blue input signals according to a preset condition and the main input signal. ### Claim 11 (depends on 10) The brightness adjustment method as claimed in claim 10, wherein the panel further comprises a plurality of luminiferous devices and wherein the preset condition relates to the characteristic of the luminiferous devices, wherein the preset condition relates to the intensity of environment light, wherein the preset condition relates to a set, which is set by a user, and wherein the preset condition relates to the red, the green, and the blue input signals.