CN100461791C - Mobile communication terminal and grey coefficient regulating method thereof - Google Patents

Mobile communication terminal and grey coefficient regulating method thereof Download PDF

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Publication number
CN100461791C
CN100461791C CNB2005100027289A CN200510002728A CN100461791C CN 100461791 C CN100461791 C CN 100461791C CN B2005100027289 A CNB2005100027289 A CN B2005100027289A CN 200510002728 A CN200510002728 A CN 200510002728A CN 100461791 C CN100461791 C CN 100461791C
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CN
China
Prior art keywords
lcd
gamma
gamma value
mentioned
camera
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB2005100027289A
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Chinese (zh)
Other versions
CN1741541A (en
Inventor
廉相福
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inspur LG Digital Mobile Communications Co Ltd
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LG Electronics China Research and Development Center Co Ltd
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Filing date
Publication date
Application filed by LG Electronics China Research and Development Center Co Ltd filed Critical LG Electronics China Research and Development Center Co Ltd
Publication of CN1741541A publication Critical patent/CN1741541A/en
Application granted granted Critical
Publication of CN100461791C publication Critical patent/CN100461791C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
    • H04N9/69—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/202—Gamma control
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve

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  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Processing Of Color Television Signals (AREA)
  • Picture Signal Circuits (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The invention relates to mobile communication terminal and method for regulating gray coefficient, which comprises a cam with a certain gray coefficient value, LCD displaying the plural data as image and with changable gray degree value, button input part of plural function key including button for switching gray degree coefficient value and mobile communication terminal constituted by system control part. The invention includes three phases: displaying the gray coefficient matching degree of the cam and LCD and chromatic sensation when choosing the tinting menu; switching the LCD gray coefficient value when pressing down gray coefficient value switching key; displaying changed cam switched by the LCD gray coefficient value and LCD gray coefficient matching degree and chromatic sensation.

Description

Mobile communication terminal and grey coefficient regulating method thereof
Technical field
The present invention relates to a kind of mobile communication terminal and grey coefficient regulating method thereof that camera is installed, especially relate to a kind of mobile communication terminal and the grey coefficient regulating method thereof that also can set picture by the best picture effect of the gamma setting of adjusting camera and LCD according to user's inclination.
Background technology
The gamma value of employed camera of mobile communication terminal and LCD is the value that each manufacturing company is provided with voluntarily at present, and they have mean value, but existing terminal is not adjusted the function of gamma (gamma) value.
Therefore, when camera and LCD gamma value do not match, thereby the method for not adjusting its value can't provide best picture effect.
In addition, each user has different color inclinations, but the user can not adjust the gamma value, therefore the picture that is fit to user's inclination can not be set.
Summary of the invention
The objective of the invention is to solve problems of the prior art, a kind of mobile communication terminal and grey coefficient regulating method thereof promptly are provided, the user adjusts LCD gamma value and makes its gamma value that adapts to camera, and embodies best picture effect by the gamma value coupling of camera and LCD.
Another object of the present invention is to provide a kind of can change mobile communication terminal and the grey coefficient regulating method thereof that the gamma value improves user satisfaction according to user's inclination.
For reaching above-mentioned purpose, mobile communication terminal of the present invention is characterized in that comprising: camera, LCD, button portion and control part.Camera has certain gamma value; LCD shows various data and has a variable gamma value with image; Button portion possesses the various function keys that comprise the gamma value change key of adjusting above-mentioned LCD gamma value; When the above-mentioned gamma value of input change key, change above-mentioned LCD gamma value according to corresponding gray value change key, and above-mentioned LCD is shown, camera that changes because of above-mentioned LCD gamma value and gamma matching degree and the color sensation of LCD.
The gamma value adjustment method of above-mentioned mobile communication terminal, it is characterized in that, by camera, various data are shown and have the LCD of variable gamma value, the button input part of various function keys that comprises gamma value change key and the grey coefficient regulating method of the mobile communication terminal that systems control division is formed with image with certain gamma value, comprise three phases, promptly, when selecting the toning menu, show the gamma matching degree of above-mentioned camera and LCD and the phase I of color sensation; When pressing above-mentioned gamma value change key, change the second stage of above-mentioned LCD gamma value; The camera that demonstration changes because of the change of above-mentioned LCD gamma value and the phase III of LCD gamma matching degree and color sensation.
Also have, show that in above-mentioned phase I and phase III the gamma matching degree of camera and LCD is characterised in that the gamma matching degree that shows camera and LCD with curve chart or percentage.
Have again, show that in above-mentioned phase I and phase III color sensation is characterised in that, show the color sensation that changes with LCD gamma value with toning chart or photograph.
As mentioned above, mobile communication terminal of the present invention and grey coefficient regulating method thereof have following effect.
The first, can change the gamma value of LCD, and sense of vision shows the gamma matching degree of camera and LCD, so the user's gamma value that can adjust LCD is complementary the gamma value of itself and camera.Thereby, can embody best picture effect by the gamma value of coupling camera and LCD.
The second, can change the gamma value of LCD, and show the color that changes according to LCD gamma value, thereby so the user picture raising user satisfaction can be set according to oneself inclination.
Other purpose of the present invention, feature and advantage can be passed through to understand with reference to the detailed description of the embodiment of accompanying drawing.
Describe below in conjunction with the structure and the effect of accompanying drawing the embodiment of the invention, the structure of the embodiment of the invention of shown in the drawings or its explanation and its effect only describe as an embodiment, and technological thought of the invention described above and core texture and effect not only are confined to this.
Description of drawings
Fig. 1 is the gross morphology schematic diagram of camera gamma curves figure;
Fig. 2 is the gross morphology schematic diagram of LCD gamma curves figure;
Fig. 3 is the gamma matching degree schematic diagram of camera and LCD;
Fig. 4 is the schematic configuration schematic diagram of common mobile communication terminal;
Fig. 5 is the grey coefficient regulating method precedence diagram according to mobile communication terminal of the present invention;
Fig. 6 is the shown picture view of LCD according to the present invention;
Fig. 7 is at the present invention's photograph that chart shows that can replace mixing colours.
Wherein, Reference numeral:
41 cameras, 42 LCD
43 button portions, 44 control parts
Embodiment
At first learn about the gamma characteristic before the present invention will be described.
The dark part of common signal of video signal is inferior grade (level), and bright part is high-grade.But light intensity (brightness) and grade are not strictly proportional but are similar to the relation of formula 1.
Formula 1
v＝kpr
At this, V is a grade, and K is a constant, and P is a light intensity, and r is a gamma.
Above-mentioned gamma (r) is non-linear value, and the signal of video signal grade is directly proportional with light intensity when gamma (r) is 1.
Usually, the gamma value of camera is 0.4～0.7, and LCD gamma value has 1.8～2.2 scope.
Fig. 1 is the gross morphology schematic diagram of camera gamma curves figure, and Fig. 2 is the general kenel schematic diagram of LCD gamma curves figure.
The gamma value of camera shows curve chart form as shown in Figure 1, the grade height of exporting less than 1 when low-light level.
On the contrary, the gamma value of LCD shows curve chart form as shown in Figure 2 greater than 1, and the grade of exporting when low-light level is low.
Fig. 3 is the gamma matching degree schematic diagram of camera and LCD, when the gamma value of camera and LCD was mated fully, the gamma curves figure of camera and LCD gamma curves figure were 1 linear pattern chart (y=x) formation ideal symmetrical in flexibility.
The present invention shows the gamma matching degree curve chart of aforesaid camera and LCD, and the user can adjust the gamma that makes its suitable camera to LCD gamma value.
And, show the toning chart together with above-mentioned curve chart, so the user can be provided with color sensation according to the inclination of oneself.
Fig. 4 is the schematic configuration schematic diagram of common mobile communication terminal, a demonstration and camera and LCD relevant portion.
As diagram, comprise camera 41, LCD42, button portion 43 and control part 44.Camera 41 has certain gamma value; LCD42 shows various data and has a variable gamma value with image; Button portion 43 possesses the various function keys that comprise the gamma value change key of adjusting above-mentioned gamma value; Control part 44 control whole systems, corresponding above-mentioned gamma value change key changes above-mentioned LCD42 gamma value, and makes above-mentioned LCD42 show the camera 41 of variation and gamma matching degree and the color sensation of LCD42 along with the change of LCD42 gamma value.
Mobile communication terminal gamma control method of the present invention is as follows.
Fig. 5 is according to mobile communication terminal grey coefficient regulating method precedence diagram of the present invention.
At first, the user menu S501 that selects to mix colours, LCD show the curve chart and the toning chart S502 of the gamma matching degree of camera 41 and LCD42.At this moment, can replace with the percentage (%) of the gamma matching degree that shows camera 41 and LCD42 above-mentioned camera 41 and LCD42 the gamma matching degree curve chart or can show simultaneously.And, can replace above-mentioned toning chart with photograph with rich colors.
The user sees whether curve chart or the decision of toning chart that LCD42 is shown change it.The user presses the gamma change key S503 of above-mentioned button portion 43 when when change decision.
Afterwards, change the gamma value S504 of LCD42 according to the above-mentioned gamma value change key of being imported.
At last, show camera 41 and the gamma matching degree curve chart of LCD42 and the chart S505 that mixes colours that changes along with the change of LCD42 gamma value.
It more than is adjustment according to gamma value of the present invention.
Fig. 6 is according to LCD42 display frame schematic diagram of the present invention, the curve chart and the toning chart of the gamma matching degree of the gamma value curve chart of its demonstration camera 41, gamma value curve chart, camera and the LCD of LCD42.
Fig. 7 is at the present invention's can replace mixing colours photograph of chart, uses the photograph of rich colors to be advisable.
By the explanation of above said content, just can know in the scope that does not break away from the technology of the present invention thought and can carry out numerous variations and modification so long as be engaged in the operator in this field.Therefore, the content that technical scope of the present invention is not limited among the embodiment to be put down in writing, but determine according to claims.

Claims (4)

1. mobile communication terminal is characterized in that comprising: camera, and it has certain gamma value; LCD, it shows various data and has a variable gamma value with image; Button portion, it possesses the various function keys that comprise the gamma value change key of adjusting above-mentioned LCD gamma value; Control part, when input has above-mentioned gamma value to change key, change above-mentioned LCD gamma value according to corresponding gray value change key, and above-mentioned LCD is shown, camera that changes because of above-mentioned LCD gamma value and gamma matching degree and the color sensation of LCD.
2. the gamma control method of a mobile communication terminal, it is characterized in that: for camera with certain gamma value, with various data with image show and have variable gamma value LCD, comprise the grey coefficient regulating method of button input part and the mobile communication terminal of systems control division composition of the various function keys of gamma value change key, comprise three phases, promptly, when selecting the toning menu, show the gamma matching degree of above-mentioned camera and LCD and the phase I of color sensation; When pressing above-mentioned gamma value change key, change the second stage of above-mentioned LCD gamma value; The camera that demonstration changes because of the change of above-mentioned LCD gamma value and the phase III of LCD gamma matching degree and color sensation.
3. the gamma control method of mobile communication terminal according to claim 2 is characterized in that; Show that in above-mentioned phase I and phase III the gamma matching degree of camera and LCD is the gamma matching degree that shows camera and LCD with curve chart or percentage.
4. the gamma control method of mobile communication terminal according to claim 2 is characterized in that; Show that in above-mentioned phase I and phase III color sensation is to show the color sensation that changes with LCD gamma value with toning chart or photograph.
CNB2005100027289A 2004-08-23 2005-01-19 Mobile communication terminal and grey coefficient regulating method thereof Expired - Fee Related CN100461791C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040066269 2004-08-23
KR1020040066269A KR100672421B1 (en) 2004-08-23 2004-08-23 Mobile telecommunication terminal and method for correcting gamma

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CN1741541A CN1741541A (en) 2006-03-01
CN100461791C true CN100461791C (en) 2009-02-11

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160130002A (en) 2015-04-30 2016-11-10 삼성디스플레이 주식회사 Method for manufacturing liquid crystal display and inspection device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1402572A (en) * 2001-08-23 2003-03-12 华为技术有限公司 Method for implementing static picture display adaptation in mobile terminal
JP2003259387A (en) * 2002-02-26 2003-09-12 Minolta Co Ltd Image display device, digital camera, and image processing circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1402572A (en) * 2001-08-23 2003-03-12 华为技术有限公司 Method for implementing static picture display adaptation in mobile terminal
JP2003259387A (en) * 2002-02-26 2003-09-12 Minolta Co Ltd Image display device, digital camera, and image processing circuit

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GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: LANGCHAO LEJIN DIGITAL MOBILE COMMUNICATION CO., L

Free format text: FORMER OWNER: LG ELECTRONICS (CHINA) R + D CENTER CO., LTD.

Effective date: 20120315

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 100102 CHAOYANG, BEIJING TO: 264001 YANTAI, SHANDONG PROVINCE

TR01 Transfer of patent right

Effective date of registration: 20120315

Address after: 264001 No. 228 Changjiang Road, Yantai economic and Technological Development Zone, Shandong, China

Patentee after: Langchao Lejin Digital Mobile Communication Co., Ltd.

Address before: Two Beijing 100102 Chaoyang District city in Wangjing Lize Park No. 203 Petrova building block B

Patentee before: LG Electronic (China) Research and Development Center Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090211

Termination date: 20170119