WO2010038341A1 - Dispositif de traitement d'image - Google Patents

Dispositif de traitement d'image Download PDF

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Publication number
WO2010038341A1
WO2010038341A1 PCT/JP2009/003512 JP2009003512W WO2010038341A1 WO 2010038341 A1 WO2010038341 A1 WO 2010038341A1 JP 2009003512 W JP2009003512 W JP 2009003512W WO 2010038341 A1 WO2010038341 A1 WO 2010038341A1
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WO
WIPO (PCT)
Prior art keywords
moving image
image processing
image data
brightness
display
Prior art date
Application number
PCT/JP2009/003512
Other languages
English (en)
Japanese (ja)
Inventor
村田竜一
小林豊
平井久志
佐藤光弘
Original Assignee
パナソニック株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Publication of WO2010038341A1 publication Critical patent/WO2010038341A1/fr

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    • 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
    • G09G3/3611—Control of matrices with row and column drivers
    • 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
    • G09G3/3406—Control of illumination source
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00885—Power supply means, e.g. arrangements for the control of power supply to the apparatus or components thereof
    • H04N1/00888—Control thereof
    • H04N1/00896—Control thereof using a low-power mode, e.g. standby
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0267—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by controlling user interface components
    • H04W52/027—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by controlling user interface components by controlling a display operation or backlight unit
    • 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
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • G09G2330/022—Power management, e.g. power saving in absence of operation, e.g. no data being entered during a predetermined time
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/08—Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • G09G2340/0435—Change or adaptation of the frame rate of the video stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/0096—Portable devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to an image processing apparatus suitable for use in an electronic device provided with a brightness-controllable display such as a mobile phone.
  • Patent Document 1 in a liquid crystal display device provided with a backlight in which the brightness of the backlight as the display means is switched in three or more steps, an optimal frame frequency is obtained so that the flicker rate becomes zero according to the switched brightness.
  • the technology which reduces the power consumption of a liquid crystal display device is described by switching to.
  • the above-described technology only aims to reduce the power consumption by lowering the frame frequency for driving the display panel together with the decrease in the luminance of the backlight, and there is a demand for further reduction of the power consumption.
  • a mobile phone there is a demand to make the time available for one charge as long as possible.
  • the present invention has been made in view of such circumstances, and provides an image processing apparatus capable of further promoting power saving obtained by changing a frame frequency according to a decrease in backlight brightness and the brightness of the backlight.
  • the purpose is to
  • the image processing apparatus is characterized in that the moving image is displayed based on the display means for displaying the decoded moving image data, a brightness adjusting means for adjusting the brightness of the display means, and the brightness adjusted by the brightness adjusting means. And moving image processing means for changing data decoding processing.
  • the moving image processing means adjusts a frame rate of the moving image data as a change of the decoding process.
  • the processing amount per unit time can be reduced, and power saving can be achieved.
  • the moving image processing means adjusts the stage of decoding completion in the case of content data which is compressed so that the moving image data can be expanded stepwise as a change of the decoding process.
  • the amount of processing can be reduced and power saving can be achieved by treating as decoding completion in the middle of the decoding process.
  • the moving image processing means adjusts the number of components constituting the color space of the moving image data, which is a target of the decoding process, as a change of the decoding process.
  • the amount of decoding processing can be reduced, and power saving can be achieved.
  • the image processing apparatus further includes storage means for storing moving image data having a first resolution and moving image data having a second resolution lower than the first resolution, wherein the moving image processing means The moving image data having the first resolution and the moving image data having the second resolution are switched based on the brightness adjusted by the brightness adjusting means.
  • two moving image data having different resolutions are separately stored, and when adjusting to low luminance, moving image data having low resolution is used, so that the processing amount can be reduced and power saving can be achieved.
  • the moving image processing means adjusts the decoding process of the moving image data when the display means displays the moving image data and image data different from the moving image data.
  • the display device further includes a display control unit that controls display of the moving image data on the display unit, and the display control unit displays the moving image data based on the brightness adjusted by the brightness adjusting unit.
  • the display control of the moving image data is changed based on the brightness adjusted by the brightness adjusting means. Therefore, the control can be performed with the processing amount reduced smaller than usual, and power saving can be achieved.
  • the display control means performs color reduction processing on the decoded moving image data, changing display control of moving image data, and changes a transfer rate to the display means.
  • the display control means decodes the image data by the number of frames, changing display control of moving image data, and transfers only data of a number of frames smaller than the number of frames to the display means.
  • the display control means changes the display control of the moving image data, reduces the number of color components of the decoded moving image data, and transfers it to the display means.
  • the apparatus further comprises: input means for receiving an input instruction; and time monitoring means for monitoring whether or not the input instruction to the input means has a predetermined time, and the brightness adjusting means comprises the time monitoring means. The brightness of the display means is adjusted according to the monitoring result of
  • the brightness adjustment means adjusts the brightness of the display means when there is no input instruction for a predetermined time, it is possible to reduce the power consumption at the time of no operation, and it is possible to save power as a whole.
  • the display device further comprises a battery remaining amount detecting unit for detecting the remaining amount of the battery that supplies power to each unit, and the brightness adjusting unit displays the display according to the detection result of the battery remaining amount detecting unit. Adjust the brightness of the means.
  • the brightness adjustment means adjusts the brightness of the display means according to the battery remaining amount, so power consumption can be reduced when the battery remaining amount is reduced, and power saving can be achieved as a whole.
  • the apparatus further comprises a battery remaining amount detecting unit for detecting the remaining amount of the battery supplying power to each unit, and the decoding process of the moving image data is performed according to the detection result of the battery remaining amount detecting unit. change.
  • the decoding process of the moving image data is changed according to the battery remaining amount, so power consumption can be reduced when the battery remaining amount is reduced, and power saving can be achieved as a whole.
  • the brightness adjusting unit has a plurality of stages of different brightness
  • the moving image processing unit processes the moving image data at a frame rate corresponding to the brightness adjusted by the brightness adjusting unit.
  • the brightness adjustment can be performed in two or more stages, and the decoding process is changed based on the adjusted brightness, so power saving can be achieved.
  • the moving image is displayed based on the display step of displaying the decoded moving image data, the brightness adjustment step of adjusting the brightness in the display step, and the brightness adjusted in the brightness adjustment step. And d) a moving image processing step of changing a decoding process of the image data.
  • the present invention can provide an image processing apparatus capable of further promoting power saving obtained by changing the frame frequency in accordance with the decrease in the brightness of the backlight as the display means and the brightness of the backlight.
  • Block diagram showing a schematic configuration of the image processing apparatus according to Embodiment 1 of the present invention The figure for demonstrating the frame rate adjustment of the moving image data in the image processing apparatus of FIG.
  • the figure for demonstrating the frame rate adjustment of the moving image data in the image processing apparatus of FIG. Flow chart for explaining the operation of the image processing apparatus of FIG. 1
  • FIG. 1 is a block diagram showing a schematic configuration of an image processing apparatus according to Embodiment 1 of the present invention. It is assumed that the image processing device 1 of the present embodiment is applied to a mobile phone. As shown in FIG. 1, the image processing apparatus 1 according to the present embodiment includes a user input unit 2, a time monitoring unit 3, a luminance control unit 5, a moving image control unit 6, a decoder 7, and a display control unit 9. , A background display control unit 10, and a display 11 capable of controlling brightness (hereinafter, simply referred to as "display").
  • the user input unit 2 receives an input instruction by key operation or the like.
  • the time monitoring unit 3 monitors whether there is no input instruction to the user input unit 2 for a certain period of time, and notifies the luminance control unit 5 to that effect when there is no input instruction after the certain period of time.
  • the background display control unit 10 controls to display still image data or moving image data other than moving images controlled by the moving image control unit 6.
  • the brightness control unit 5 controls the brightness of the display 11 mounted on the mobile phone to which the image processing apparatus 1 of the present embodiment is applied.
  • the brightness control unit 5 adjusts the brightness of the backlight when the display 11 is, for example, a liquid crystal display, and adjusts the brightness of the organic EL display itself when the display 11 is an organic EL display.
  • the display 11 is not limited to a liquid crystal display or an organic EL display, and may be another display.
  • the brightness of the backlight of the display 11 is set to two levels of “full light” and “low light”.
  • the brightness control unit 5 When the brightness control unit 5 receives a notification from the time monitoring unit 3 that there is no input instruction by the user operation, the brightness control unit 5 switches the brightness of the backlight of the display 11 from “all lights” to “lights”. Switch to "all lights” when notified that there is an input instruction in the status.
  • the moving image control unit 6 performs control to change the decoding process in the decoder 7 according to the brightness setting by the brightness control unit 5.
  • the frame rate of moving image data is adjusted. For example, when the luminance of the display 11 is switched to "full light", the number of drawn frames per unit time is adjusted to 6 fps as shown in FIG. 2, and when switched to "light", as shown in FIG. As shown, the number of drawn frames per unit time is adjusted to 4 fps.
  • the decoder 7 and the display control unit 9 operate, and the integration operation time per unit becomes shorter as the number of drawn frames becomes smaller. Power consumption is reduced by shortening the operation time of the decoder 7 and the display control unit 9. In the state of slight lighting, the screen of the display 11 becomes somewhat difficult to see, and even with a low frame rate, it is possible to give the same viewing feeling as drawing at a normal frame rate.
  • the moving image control unit 6 and the decoder 7 constitute moving image processing means 8, and the moving image processing means 8 adjusts the frame rate of moving image data as a change of decoding processing of moving image data (1) moving image
  • a method of adjusting the stage of decoding and (2) a method of adjusting color components for decoding moving image data may be mentioned.
  • Scalable compression is a compression method that can be decoded stepwise and can improve image quality by performing decoding stepwise.
  • the moving image processing means 8 constituted by the moving image control unit 6 and the decoder 7 is such that the display 11 is moving image data and image data different from the moving image data (still image data of the background by the background display control unit 10 or When simultaneously displaying moving image data), decoding processing of both moving image data and background image data or decoding processing of only moving image data is performed.
  • the decoder 7 may use the same decoder for both the moving image control unit 6 and the background display control unit 10, or may use separate decoders.
  • the display control unit 9 controls the display 11 to display moving image data decoded by the decoder. At this time, the display control unit 9 controls the display control of the moving image data decoded by the decoder based on the luminance adjusted by the luminance control unit 5 and the display control of the moving image data at the adjusted frame rate. Do. Further, the display control unit 9 may perform display control from the moving image control unit 6 and the background display control unit 10 independently. As an example, the moving image control unit 6 decodes and displays the animation of the character on a part of the screen, and the background display control unit 10 decodes and displays the standby screen, menu screen, status display icon, etc. on the entire screen. I do. The display control unit 9 controls the display 11 to display an animation of a character, a standby screen, a menu screen, a status display icon, and the like.
  • FIG. 4 is a flowchart showing an operation in the case of adjusting a frame rate as a change in the decoding process of moving image data.
  • step S1 it is determined whether or not moving image drawing processing
  • step S2 no-operation detection is performed for a fixed time
  • step S3 the brightness of the backlight of the display 11 is set to the slight light level
  • step S4 user operation detection is performed.
  • step S6 step S5 If the user's operation is detected, full-light control is performed, the brightness of the display 11 is set to the full-light level, and the process proceeds to step S6 (step S5). If no operation for a predetermined time is detected and no user operation is detected, the process proceeds to step S6 without performing full light control or small light control.
  • step S6 it is determined whether the brightness control state is a slight light or a full light. In this determination, if the luminance control state is full lighting, decoding processing at a normal frame rate is performed as shown in FIG. 2 (step S7), and the moving image is displayed on the display 11 (step S8). On the other hand, if the luminance control state is a slight light, for example, decoding processing at a low frame rate is performed as shown in FIG. 3 (step S9), and the moving image is displayed on the display 11 (step S8). After the display process with the full light or the slight light is performed, the process returns to step S1 and the same process as described above is repeated.
  • the brightness control unit 5 sets the brightness of the display 11 to the slight light level when no operation is detected for a predetermined time in the moving image drawing process.
  • the light control is performed, and when no operation is detected for a predetermined period of time and the user operation is detected, the full light control is performed to set the brightness of the display 11 to the full light level. If the luminance control state is all lights, decoding processing is performed at the normal frame rate, if the luminance control state in the luminance control unit 5 is slight lighting, decoding processing is performed at the low frame rate, and the display control unit 9
  • the moving image data decoded by the processing means 8 is displayed.
  • the frame rate of moving image data is adjusted based on the brightness adjustment, but the following method can also be adopted. That is, a memory (storage means, not shown) for storing moving image data having a first resolution and moving image data having a second resolution lower than the first resolution is provided, and the moving image processing means 8 Based on the luminance adjusted by the luminance control unit 5, the moving image data having the first resolution and the moving image data having the second resolution are replaced. For example, when the light control of the display 11 is performed, moving image data having a first resolution is replaced with moving image data having a second resolution.
  • the luminance adjustment is performed in two stages of "full light” and “minute light”, but may be performed in three or more stages.
  • the luminance control unit 5 has a plurality of stages with different luminances, and the moving image processing means 8 performs moving images at a frame rate corresponding to the luminance adjusted by the luminance control unit 5 Process data
  • FIG. 5 is a block diagram showing a schematic configuration of an image processing apparatus according to Embodiment 2 of the present invention.
  • the image processing apparatus 1A of the present embodiment is provided with a battery remaining amount detection unit 4.
  • the battery remaining amount detection unit 4 detects a voltage of a battery (not shown) mounted on a mobile phone to which the image processing apparatus 1A of the present embodiment is applied, and outputs a detection value.
  • the same parts as those of the image processing apparatus 1 of the first embodiment are designated by the same reference numerals, and the description thereof is omitted.
  • the battery remaining amount detection unit 4 notifies the luminance control unit 5 when the battery remaining amount or the estimated usable time becomes equal to or less than a predetermined value.
  • the brightness control unit 5 adjusts the brightness of the backlight when the display 11 is, for example, a liquid crystal display, and adjusts the brightness of the organic EL display itself when the display 11 is an organic EL display.
  • the brightness control unit 5 switches the brightness of the backlight of the display 11 from “full light” to "slight light” when receiving notification from the battery remaining amount detection unit 4 that the battery remaining amount is equal to or less than the predetermined value. In the state of "light", when the notification that the battery remaining amount exceeds the predetermined value or the estimated usable time has been recovered to the predetermined value or more by charging is switched to "all lights".
  • control is performed to change the decoding process in the decoder 7 according to the brightness setting by the brightness control unit 5.
  • decoding processing color components to be decoded are adjusted to only partial color components. For example, when the luminance of the display 11 is switched to "full light”, adjustment is made so that all components of the luminance, blue difference component and red difference component are decoded, and when switched to "light” Adjustment is performed only to the luminance component, or adjustment is performed so as to decode only the luminance and the blue difference component, or the luminance and the red difference component.
  • the decoder 7 operates to decode each frame, and the power consumption is reduced by shortening the decoding processing time required per frame. In the state of slight lighting, the screen of the display 11 becomes somewhat difficult to see, and even on a screen that is difficult to see, even with the decoding processing by a part of luminance or color components, it is possible to give the same viewing feeling as drawing normal decoding results. It is.
  • the display control unit performs control to display moving image data decoded by the decoder on the display 11.
  • Embodiment 4 The configuration of the image processing apparatus according to the fourth embodiment of the present invention is the same as the configuration of the image processing apparatus 1 according to the first embodiment, and the description will be omitted.
  • control is performed to change the decoding process in the decoder 7 according to the brightness setting by the brightness control unit 5.
  • the decoding stage is adjusted so that the decoding process being performed in stages is treated as the decoding completion in the middle stage as the decoding process.
  • the decoding process completed by repeating decoding six times is adjusted to perform decoding six times repeatedly, and switched to "slight light”
  • the decoding process to be completed by repeating the decoding six times is adjusted to perform the decoding four times.
  • the decoder 7 operates to decode each frame, and the power consumption is reduced by shortening the decoding processing time required per frame. In the state of the dim light, the screen of the display 11 becomes slightly difficult to see, and even on the way of decoding, it is possible to give the same viewing feeling as drawing of a normal decoding result.
  • the display control unit performs control to display moving image data decoded by the decoder on the display 11.
  • the configuration of the image processing apparatus according to the fifth embodiment of the present invention is the same as the configuration of the image processing apparatus 1 according to the first embodiment, and the description will be omitted.
  • the decoder 7 performs a decoding process
  • the display control process in the display control unit 9 changes the display transfer rate according to the brightness setting by the brightness control unit 5.
  • the present invention is not limited to the above embodiment, and can be implemented with appropriate modifications.
  • the method of changing the decoding process of moving image data, the method of changing display control of moving image data, and the like in the above-described embodiment are an example, and combinations and various changes may be made within the scope of the effects of the present invention. Is possible. In addition, without departing from the scope of the object of the present invention, it is possible to appropriately change and implement.
  • the present invention has the effect that power saving obtained by changing the frame frequency according to the brightness of the backlight can be further promoted, and it is possible to provide an electronic device equipped with a brightness-controllable display such as a mobile phone. It is applicable.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Telephone Function (AREA)
  • Image Processing (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Storing Facsimile Image Data (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

L'invention porte sur un dispositif de traitement d'image qui peut  favoriser une plus grande réduction de la consommation d'énergie par la réduction de la luminosité de rétroéclairage et par le changement de la fréquence de trame en fonction de la luminosité du rétroéclairage. Une unité de commande de luminosité (5) règle la luminosité d'un dispositif d'affichage (11) à un faible niveau d'éclairage lorsque, pendant une période de temps prescrite dans un processus de tracé d'image en mouvement, aucune opération n'est détectée et règle la luminosité du dispositif d'affichage (11) à un niveau d'éclairage maximum lorsque la période de temps prescrite sans opération n'est pas détectée et qu'une opération de l'utilisateur est détectée. Un moyen de traitement d'image en mouvement (8) effectue un décodage à une fréquence de trames normale lorsque l'état de commande de luminosité de l'unité de commande de luminosité (5) est à un maximum d’éclairage, et effectue un décodage à une fréquence de trames basse lorsque l'état de commande de luminosité de l'unité de commande de luminosité (5) est à un minimum d’éclairage. Une unité de commande d'affichage (9) affiche les données d'image en mouvement décodées par le moyen de traitement d'image en mouvement (8).
PCT/JP2009/003512 2008-09-30 2009-07-24 Dispositif de traitement d'image WO2010038341A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-254259 2008-09-30
JP2008254259A JP2010085683A (ja) 2008-09-30 2008-09-30 画像処理装置

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WO2010038341A1 true WO2010038341A1 (fr) 2010-04-08

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JP2012109810A (ja) * 2010-11-17 2012-06-07 Panasonic Corp 表示装置、表示制御方法、携帯電話及び半導体装置
JP2014204260A (ja) * 2013-04-04 2014-10-27 株式会社デンソーウェーブ 携帯端末装置
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