# US 8,783,875 B2 · Light compensation scheme, optical machine device, display system and method for light compensation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,783,875 B2 - Document ID: US8783875B2 - Status: Granted - Kind: B2 - Application number: 12/642,459 - Filed: 2009-12-18 - Published: 2011-04-07 - Granted: 2014-07-22 - Earliest claimed: 2009-10-01 - Assignees: Genesys Logic, Inc. - Applicants: Nei-Chiung Perng; Chih-nan Wei; Po-Yao Chuang - Inventors: Nei-Chiung Perng; Chih-nan Wei; Po-Yao Chuang - Web page: https://patentgrep.com/patent/US8783875B2 ## CPC - G02F 1/1336: {Illuminating devices} - G09G 3/3413: {Details of control of colour illumination sources} - H04N 9/3111: {for displaying the colours sequentially, e.g. by using sequentially activated light sources (sequential projection in colour photography G03B33/08)} - H04N 9/3155: {for controlling the light source (light source control per se H05B35/00 – H05B47/00; control of an illumination source for displays in general G09G3/3406)} - G02F 1/133622: {Colour sequential illumination} - G02F 1/136277: {formed on a semiconductor substrate, e.g. of silicon} - G02F 2201/58: Arrangements comprising a monitoring photodetector - G09G 2310/0235: Field-sequential colour display - G09G 2320/0233: Improving the luminance or brightness uniformity across the screen - G09G 2320/0626: for control of overall brightness - G09G 2320/0646: Modulation of illumination source brightness and image signal correlated to each other - G09G 2360/145: the light originating from the display screen - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A light compensation scheme, an optical machine device, a display system and a method for light compensation are disclosed herein. The light compensation scheme includes a detector for inspecting a data related to a luminous flux of each of different color beams, and a controller for selectively adjusting anytime a luminosity of at least one of a plurality of pointolites and/or the transmittances of at least one part of liquid crystals disposed within a liquid crystal display panel, based on the inspected data. ## Claims ### Claim 1 An optical machine device suited for a display system, comprising: at least one light source for emitting a illuminating beam; a polarizing beam splitter for receiving the illuminating beam directed without implementing of color separating/filitering, and correspondingly forming a polarized incident beam; a liquid crystal panel having a plurality of liquid crystals for receiving the polarized incident beam and correspondingly forming a reflective beam based on a transmittance of at least one of the liquid crystals, wherein the reflective beam passes through the polarizing beam splitter to form a polarized reflective beam; a projecting lens for receiving the polarized reflective beam and correspondingly forming a projected beam projected out of the optical machine device; and a controller respectively electrically connected to the at least one light source and the liquid crystal panel, generating a control signal, without a human selection, to control a luminosity of the at least one light source and a direction change of at least one part of the liquid crystals to vary the transmittances of the at least one part of the liquid crystals of the liquid crystal panel, only based on at least one data related to a luminous flux of at least one of the illuminating beam, the polarized incident beam, the reflective beam, the polarized reflective beam and the projected beam. ### Claim 2 (depends on 1) The optical machine device as claimed in claim 1, further comprising a optical lens for possessing a direction of a beam pathway which the illuminating beam is transmitted along. ### Claim 3 (depends on 1) The optical machine device as claimed in claim 1, further comprising at least one detector used for inspecting the at least one data related to the luminous flux of at least one of the illuminating beam, the polarized incident beam, the reflective beam, the polarized reflective beam and the projected beam, whereby the controller can selectively adjusts the luminosity of the at least one light source and/or the transmittances of the at least one part of the liquid crystals, based on said at least one data transmitted from the at least one detector. ### Claim 4 (depends on 1) The optical machine device as claimed in claim 1, wherein the controller further has a logistic core used for determining a quantity of adjusting the luminosity of the at least one light source, according to a difference between said at least one data inspected and a predetermined characteristic value. ### Claim 5 (depends on 4) The optical machine device as claimed in claim 4 wherein the logistic core determines the quantity of adjusting the luminosity of the at least one light source and the transmittances of at least one part of the liquid crystals by a lookup table and/or an operation of a calculating unit, wherein the lookup table and/or the operation of the calculating unit is used to determine one of a voltage value, a current value and a time sequence for the quantity of adjusting the luminosity of at least one of the at least one light source and the transmittances of at least one part of the liquid crystals. ### Claim 6 An optical machine device suited for a display system, comprising: a plurality of different-color pointolites for emitting a plurality of different-color illuminating beams; a optical lens for possessing a beam pathway direction where the different-color illuminating beams are transmitted; a polarizing beam splitter for directly receiving the different-color illuminating beams possessed by the optical lens and directed without implementing of color separating/filitering, and correspondingly forming a plurality of different-color polarized incident beams; a liquid crystal panel having a plurality of liquid crystals for receiving the different-color polarized incident beams and correspondingly forming a plurality of different-color reflective beams based on a transmittance of at least one of the liquid crystals, wherein the different-color reflective beams pass through the polarizing beam splitter to form a plurality of different-color polarized reflective beams; a projecting lens for receiving the different-color polarized reflective beams and correspondingly forming a plurality of different-color projected beams projected out of the optical machine device; and a light compensation scheme having at least one detector for inspecting at least one data related to a luminous flux of at least one of the different-color illuminating beams, the different-color polarized incident beams, the different-color reflective beams, the different-color polarized reflective beams and the different-color projected beams, and a controller for generating a control signal, without a human selection, to control a luminosity of at least one of the pointolites and a direction change of at least one part of the liquid crystals to vary the transmittances of the at least one part of the liquid crystals of the liquid crystal panel, only based on said at least one data transmitted from the at least one detector. ### Claim 7 (depends on 6) The optical machine device as claimed in claim 6, wherein the plurality of pointolites are a plurality of different-color light emitting diodes (LEDs) which are packaged together and emit the different-color illuminating beams in turns under different time sequences based on a color-sequential technology. ### Claim 8 (depends on 6) The optical machine device as claimed in claim 6, wherein the optical lens is a concave lens and possesses the beam pathway direction where the different-color illuminating beams are transmitted in parallel and directly illuminates toward the polarizing beam splitter. ### Claim 9 (depends on 6) The optical machine device as claimed in claim 6, wherein said at least one data inspected is one of a luminous flux, a luminosity, an illuminance and a brightness. ### Claim 10 (depends on 6) The optical machine device as claimed in claim 6, wherein the at least one detector includes a plurality of detectors allocated, differently. ### Claim 11 (depends on 10) The optical machine device as claimed in claim 10, wherein at least one of the detectors is allocated near to an outside of the liquid crystal panel and thereby receives the different-color polarized incident beams. ### Claim 12 (depends on 10) The optical machine device as claimed in claim 10, wherein at least one of the detectors is allocated near to an outside of the polarizing beam splitter and thereby receives the different-color illuminating beams. ### Claim 13 (depends on 10) The optical machine device as claimed in claim 10, wherein at least one of the detectors is allocated near to an outside of the projecting lens and thereby receives the different-color polarized reflective beams. ### Claim 14 (depends on 10) The optical machine device as claimed in claim 10, wherein at least one of the detectors is allocated near to an outside of the optical machine device and thereby receives the different-color projected beams. ### Claim 15 (depends on 6) The optical machine device as claimed in claim 6, wherein the controller further has a logistic core used for determining a quantity of adjusting the luminosity of at least one of the different-color pointolites, according to a difference between said at least one data inspected and a predetermined characteristic value. ### Claim 16 (depends on 15) The optical machine device as claimed in claim 15 wherein the logistic core determines the quantity of adjusting the luminosity of at least one of the different-color pointolites and/or the transmittances of the at least one part of the liquid crystals by a lookup table and/or an operation of a calculating unit, wherein the lookup table and/or the operation of the calculating unit is used to determine one of a voltage value, a current value and a time sequence for the quantity of adjusting the luminosity of at least one of the different-color pointolites and/or the transmittances of the at least one part of the liquid crystals. ### Claim 17 (depends on 10) The optical machine device as claimed in claim 10, wherein the controller further has a logistic core used for determining a quantity of adjusting the luminosity of at least one of the different-color pointolites and the transmittances of the at least one part of the liquid crystals, according to at least one difference among a number of data, with regard to the luminous flux, which are respectively inspected by the plurality of detectors allocated differently, until the number of data inspected approach consistence. ### Claim 18 (depends on 17) The optical machine device as claimed in claim 17 wherein the logistic core determines the quantity of adjusting the luminosity of at least one of the different-color pointolites and the transmittances of the at least one part of the liquid crystals by a lookup table and/or an operation of a calculating unit, wherein the lookup table and/or the operation of the calculating unit is used to determine one of a voltage value, a current value and a time sequence for the quantity of adjusting the luminosity of at least one of the different-color pointolites and/or the transmittances of the at least one part of the liquid crystals. ### Claim 19 (depends on 10) The optical machine device as claimed in claim 10, wherein the controller further has a logistic core used for determining a quantity of adjusting the luminosity of at least one of the different-color pointolites and the transmittances of the at least one part of the liquid crystals, according to at least one difference among a number of data, with regard to the luminous flux, which are respectively inspected by the same detector for different time sequences, until the number of data inspected approach consistence. ### Claim 20 (depends on 19) The optical machine device as claimed in claim 19 wherein the logistic core determines the quantity of adjusting the luminosity of at least one of the different-color pointolites and the transmittances of the at least one part of the liquid crystals by a lookup table and/or an operation of a calculating unit, wherein the lookup table and/or the operation of the calculating unit is used to determine one of a voltage value, a current value and a time sequence for the quantity of adjusting the luminosity of at least one of the different-color pointolites and the transmittances of the at least one part of the liquid crystals. ### Claim 21 A display system, comprising: a plurality of different-color pointolites for emitting a plurality of different-color illuminating beams; a optical lens for possessing a beam pathway direction where the different-color illuminating beams are transmitted; a polarizing beam splitter for directly receiving the different-color illuminating beams possessed by the optical lens and directed without implementing of color separating/filitering, and correspondingly forming a plurality of different-color polarized incident beams; a liquid crystal panel having a plurality of liquid crystals for receiving the different-color polarized incident beams and correspondingly forming a plurality of different-color reflective beams based on a transmittance of at least one of the liquid crystals, wherein the different-color reflective beams pass through the polarizing beam splitter to form a plurality of different-color polarized reflective beams; a screen; a projecting lens receiving the different-color polarized reflective beams and correspondingly forming a plurality of different-color projected beams projected toward the screen and thereby constituting at least one image frame; and a controller generating a control signal, without a human selection, to control a luminosity of at least one of the pointolites and a direction change of at least one part of the liquid crystals to vary the transmittances of the at least one part of the liquid crystals of the liquid crystal panel, only based on at least one data related to a luminous flux of at least one of the different-color illuminating beams, the different-color polarized incident beams, the different-color reflective beams, the different-color polarized reflective beams and the different-color projected beams. ### Claim 22 A light compensation scheme suited for a display system which comprises a plurality of beam pathways respectively established and interposed, without implementing of color separating/filitering, among a plurality of different-color pointolites, a polarizing beam splitter, a liquid crystal panel having a plurality of liquid crystals, a projecting lens and a screen for transmitting different color beams through the plurality of beam pathways, and the light compensation scheme comprising: at least one detector applied on the display system and inspecting at least one data related to a luminous flux of the different-color beams from at least one of the plurality of beam pathways; and a controller having a logistic core which generates a control signal, without a human selection, to control s a luminosity of at least one of the pointolites and a direction change of at least one part of the liquid crystals to vary transmittances of the at least one part of the liquid crystals of the liquid crystal panel, only based on said at least one data transmitted from the at least one detector. ### Claim 23 (depends on 22) The light compensation scheme as claimed in claim 22, wherein the logistic core determines a quantity of adjusting the luminosity of at least one of the different-color pointolites, according to a difference between said at least one data inspected and a predetermined characteristic value. ### Claim 24 (depends on 22) The light compensation scheme as claimed in claim 22, wherein the logistic core determines a quantity of adjusting the luminosity of at least one of the different-color pointolites and the transmittances of the at least one part of the liquid crystals, according to at least one difference among a number of data, with regard to the luminous flux, which are respectively inspected by a plurality of detectors allocated differently, until the number of data inspected approach consistence. ### Claim 25 (depends on 22) The light compensation scheme as claimed in claim 22, wherein the logistic core determines a quantity of adjusting the luminosity of at least one of the different-color pointolites and the transmittances of the at least one part of the liquid crystals, according to at least one difference among a number of data, with regard to the luminous flux, which are respectively inspected by the same detector for different time sequences, until the number of data inspected approach consistence. ### Claim 26 (depends on 22) The light compensation scheme as claimed in claim 22, wherein the logistic core determines a quantity of adjusting the luminosity of at least one of the different-color pointolites and/or the transmittances of the at least one part of the liquid crystals by a lookup table and/or an operation of a calculating unit, wherein the lookup table and/or the operation of the calculating unit is used to determine one of a voltage value, a current value and a time sequence for the quantity of adjusting the luminosity of at least one of the different-color pointolites and the transmittances of the at least one part of the liquid crystals. ### Claim 27 A method for light compensation applied in a display system which comprises a plurality of beam pathways respectively established and interposed, without implementing of color separating/filitering, among a plurality of different-color pointolites, a polarizing beam splitter, a liquid crystal panel having a plurality of liquid crystals, a projecting lens and a screen for transmitting different color beams, and the method comprising the following steps of: inspecting at least one data, with regard to a luminous flux, from at least one of different-color beams which is transmitted through at least one of the beam pathways; and generating a control signal, without a human selection, to control a luminosity of at least one of the pointolites and a direction change of at least one part of the liquid crystals to vary transmittances of the at least one part of the liquid crystals of the liquid crystal panel, only based on said at least one data. ### Claim 28 (depends on 27) The method as claimed in claim 27, further comprising a step of determining a quantity of adjusting the luminosity of at least one of the different-color pointolites, according to a difference between said at least one data inspected and a predetermined characteristic value. ### Claim 29 (depends on 27) The method as claimed in claim 27, further comprising a step of determining the quantity of adjusting the luminosity of at least one of the different-color pointolites and the transmittances of the at least one part of the liquid crystals, according to at least one difference among a number of data, with regard to the luminous flux, respectively inspected for different regions in the display system and/or different time sequences, until the number of data inspected approach consistence. ### Claim 30 (depends on 27) The method as claimed in claim 27, further comprising a step of determining a quantity of adjusting the luminosity of at least one of the different-color pointolites and the transmittances of the at least one part of the liquid crystals by a lookup table and/or an operation of a calculating unit, wherein the lookup table and/or the operation of the calculating unit is used to determine one of a voltage value, a current value and a time sequence for the quantity of adjusting the luminosity of at least one of the different-color pointolites and/or the transmittances of the at least one part of the liquid crystals.