JP2008204251A - Information processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To quantitatively confirm a useless area when updating a display load and a display image screen caused by updating the display image screen. <P>SOLUTION: A cellular phone 1 can be applied to this information processor. A main control part 31 determines whether or not there is a difference in information between display contents before updating and after updating at each picture element in a display load measuring area for measuring the display load when updating the display contents, and measures the display load at each picture element in the display load measuring area based on its determining result, and generates the indication information of indicating a measured value of the display load in the display load measuring area based on the measured value of the display load at each picture element in the measured display load measuring area, and displays the generated indication information on a liquid crystal display 17 via an LCD control part 36. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an information processing apparatus, and more particularly, to an information processing apparatus capable of measuring a display load associated with a display screen update.

  In recent years, in order to improve the convenience of a mobile phone, a more complicated screen than before has been displayed on, for example, a liquid crystal display.

  However, when displaying a complicated screen, the display load associated with the update of the display screen increases as compared to displaying a simple screen. In the first place, it is useless to overwrite with the same display content in the display process, but nevertheless, when overwriting with the same display content when displaying the screen, the display screen is similarly updated. The accompanying display load is further increased.

  Thus, if the display load accompanying the update of the display screen increases unnecessarily, the power consumption of the mobile phone increases and the responsiveness to user operations also decreases.

  Therefore, in order to reduce the display load associated with the update of the display screen, conventionally, for example, the CPU usage rate when displaying a complicated screen is recorded as a log, and the CPU usage rate is relatively high. There has been proposed a technique for improving the display load associated with the update of the display screen by extracting the coordinates corresponding to the above and improving the display processing at the extracted coordinates.

  A technique for easily detecting the processing load status in the information processing apparatus has also been proposed (see, for example, Patent Document 1).

According to the technique proposed in Patent Document 1, the image processing device starts executing image processing based on a drawing permission signal generated by the control device, and completes drawing indicating that at the end of image processing. The signal is output to the timing device, and the timing device starts measurement based on the drawing permission signal and ends the measurement based on the drawing completion signal. Thereby, the processing time from the drawing start of the image processing apparatus to the drawing end can be measured.
JP 2002-328818 A

  However, the conventional technology for improving the display load associated with the update of the display screen based on the usage rate of the CPU when displaying a complicated screen, etc., eliminates the display area overwritten with the same display content, thereby displaying the display. Although the display load associated with screen update can be reduced and the display load associated with display screen update can be improved, when developing an application program related to display processing, the development engineer overwrites it with the same display content. It is not possible to directly check whether or not the display area is a display area, and at the stage of developing an application program related to display processing, a development engineer must quantitatively check the display load accompanying the update of the display screen. It was difficult.

  For this reason, it takes a lot of time for development engineers to recognize the display load associated with the display screen update, and as a result, the application program related to the developed display processing is appropriately fed back to the mobile phone and implemented. There was a problem that it was difficult.

  The present invention has been made in view of such a situation, and an information processing apparatus capable of quantitatively confirming a display load accompanying a display screen update and a useless area at the time of display screen update. The purpose is to provide.

  In order to solve the above-described problem, the information processing apparatus according to the present invention updates the display contents for each one or a plurality of pixels in the display load measurement region for measuring the display load before and after the update. A determination unit that determines whether or not there is a difference in information between display contents; a measurement unit that measures a display load for each of one or more pixels in the display load measurement region based on a determination result by the determination unit; Generating means for generating instruction information indicating the measured value of the display load in the display load measuring area based on the measured value of the display load for each one or a plurality of pixels in the display load measuring area measured by the measuring means; Display means for displaying the instruction information generated by the means.

  In the information processing apparatus of the present invention, when the display content is updated, a difference in information between the display content before and after the update is calculated for each one or a plurality of pixels in the display load measurement region for measuring the display load. It is determined whether there is a display load, and the display load for each one or a plurality of pixels in the display load measurement region is measured based on the determination result, and the display load for each one or a plurality of pixels in the measured display load measurement region Based on the measured value, instruction information indicating the measured value of the display load in the display load measurement area is generated, and the generated instruction information is generated.

  According to the present invention, it is possible to quantitatively check the display load accompanying the update of the display screen and the useless area when the display screen is updated.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows an external configuration of a mobile phone 1 applicable as an information processing apparatus according to the present invention. 1 [A] shows a configuration of an external appearance when the mobile phone 1 is opened at about 180 degrees, and FIG. 1 [B] is a side view when the mobile phone 1 is opened. It shows the structure of the appearance.

  As shown in FIGS. 1A and 1B, the mobile phone 1 includes a first casing 12 and a second casing 13 that are hinge-coupled with a hinge 11 at the center as a boundary. It is formed so as to be foldable in the direction of the arrow X via the part 11. A transmitting / receiving antenna (antenna 44 in FIG. 3 to be described later) is provided at a predetermined position inside the mobile phone 1, and radio waves are transmitted to and from a base station (not shown) via the built-in antenna. Send and receive.

  The first casing 12 is provided with operation keys 14 such as numeric keys “0” to “9”, a calling key, a redial key, an end / power key, a clear key, and an e-mail key on the surface. Various instructions can be input using the operation keys 14.

  The first casing 12 is provided with a cross key and a confirmation key at the top as the operation keys 14, and the cursor is moved in the vertical and horizontal directions when the user operates the cross key in the vertical and horizontal directions. be able to. Specifically, various operations such as a phone book list and e-mail scrolling operation displayed on the liquid crystal display 17 provided in the second housing 13, a simple homepage page turning operation, and an image sending operation are performed. Execute.

  Various functions can be confirmed by pressing the confirmation key. For example, in the first housing 12, a desired phone number is selected from a plurality of phone numbers in the phone book list displayed on the liquid crystal display 17 in accordance with the operation of the cross key by the user, and the confirmation key is the first key. When pressed in the inner direction of the housing 12, the selected telephone number is confirmed and a calling process is performed on the telephone number.

  Further, the first casing 12 is provided with an e-mail key on the left side of the cross key and the confirmation key. When the e-mail key is pressed in the inner direction of the first casing 12, the mail You can call the send / receive function. A browser key is provided on the right side of the cross key and the confirmation key. When the browser key is pressed in the direction toward the inside of the first housing 12, it is possible to browse the data on the Web page. The e-mail key and the browser key provided on the right and left sides of the cross key and the confirmation key can have various functions such as “Yes” and “No” depending on the screen displayed on the liquid crystal display 17. Because there are, they are called soft1 key and soft2 key, respectively.

  The first casing 12 is provided with a microphone 15 below the operation keys 14, and the microphone 15 collects the user's voice during a call. The first casing 12 is provided with a side key 16 for operating the mobile phone 1.

  The first casing 12 has a battery pack (not shown) inserted on the back side. When the call end / power key is turned on, power is supplied from the battery pack to each circuit unit. Start in a possible state.

  On the other hand, the second casing 13 is provided with a liquid crystal display 17 (main display) on the front thereof, and the reception state of the radio wave, the remaining battery level, the destination name and telephone number registered as the telephone directory, In addition to transmission history, etc., contents of e-mail, simple homepage, images captured by a CCD (Charge Coupled Device) camera (CCD camera 20 in FIG. 2 described later), contents received from an external content server (not shown), The contents stored in the memory card (memory card 46 in FIG. 3 described later) can be displayed.

  In addition, a speaker 18 is provided at a predetermined position above the liquid crystal display 17 so that the user can make a voice call.

  Furthermore, magnetic sensors 19 a, 19 b, 19 c, and 19 d for detecting the state of the mobile phone 1 are provided at predetermined positions inside the first housing 12 and the second housing 13.

  FIG. 2 shows another external configuration of the mobile phone 1 that can be applied as the information processing apparatus according to the present invention. The state of the cellular phone 1 in FIG. 2 is a state in which the cellular phone 1 is rotated in the arrow X direction from the state of the cellular phone 1 in FIG. Note that FIG. 2 [A] shows a configuration of the external appearance viewed from the front when the mobile phone 1 is closed, and FIG. 2 [B] is an external configuration viewed from the side when the mobile phone 1 is closed. Represents the configuration.

  A CCD camera 20 is provided on the upper part of the second casing 13, and thus a desired subject can be imaged. A sub-display 21 is provided below the CCD camera 20 to display an antenna picture indicating the current antenna sensitivity level, a battery picture indicating the current battery level of the mobile phone 1, a current time, and the like. The

  FIG. 3 shows an internal configuration of the mobile phone 1 applicable as the information processing apparatus according to the present invention.

  As shown in FIG. 3, the mobile phone 1 has a power supply circuit unit 32, an operation input control, with respect to a main control unit 31 that comprehensively controls each unit of the first casing 12 and the second casing 13. Unit 33, image encoder 34, camera interface unit 35, LCD (Liquid Crystal Display) control unit 36, demultiplexing unit 38, modulation / demodulation circuit unit 39, audio codec 40, and storage unit 47 are connected to each other via the main bus 41. In addition, the image encoder 34, the image decoder 37, the demultiplexing unit 38, the modulation / demodulation circuit unit 39, the audio codec 40, and the recording / reproducing unit 45 are connected to each other via a synchronization bus 42.

  The power supply circuit unit 32 includes, for example, a battery pack (not shown). When the end call / power key is turned on by a user operation, the power supply circuit unit 32 is carried by supplying power to each unit from the battery pack (not shown). The telephone 1 is activated so as to be operable.

  The main control unit 31 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The CPU is loaded from the program stored in the ROM or the storage unit 47 into the RAM. In addition to executing various processes in accordance with various application programs, the mobile phone 1 is comprehensively controlled by generating various control signals and supplying them to the respective units. The RAM appropriately stores data necessary for the CPU to execute various processes. The main control unit 31 has a built-in timer that accurately measures the current date and time.

  Under the control of the main control unit 31, the cellular phone 1 converts the voice signal collected by the microphone 15 in the voice call mode into a digital voice signal by the voice codec 40, compresses it, and spreads the spectrum by the modulation / demodulation circuit unit 39. Then, after the digital / analog conversion process and the frequency conversion process are performed by the transmission / reception circuit unit 43, the signal is transmitted via the antenna 44.

  Further, the cellular phone 1 amplifies the received signal received by the antenna 44 in the voice call mode, performs frequency conversion processing and analog-digital conversion processing, performs spectrum despreading processing by the modulation / demodulation circuit unit 39, and decompresses it by the voice codec 40. After the conversion to the analog audio signal, the converted analog audio signal is output through the speaker 18.

  Further, when transmitting an e-mail in the data communication mode, the mobile phone 1 sends the text data of the e-mail input by operating the operation key 14 to the main control unit 31 via the operation input control unit 33. The main control unit 31 performs spread spectrum processing on the text data in the modulation / demodulation circuit unit 39, performs digital analog conversion processing and frequency conversion processing in the transmission / reception circuit unit 43, and then transmits the data to a base station (not shown) via the antenna 44. To do.

  On the other hand, when the mobile phone 1 receives an e-mail in the data communication mode, the modulation / demodulation circuit unit 39 subjects the received signal received from the base station (not shown) via the antenna 44 to the original. After the text data is restored, it is displayed as an e-mail on the liquid crystal display 17 via the LCD control unit 36.

  Thereafter, the mobile phone 1 can record the received e-mail in response to the user's operation on the memory card 46 via the recording / reproducing unit 45.

  When the mobile phone 1 does not transmit an image signal, the mobile phone 1 directly displays the image signal captured by the CCD camera 20 on the liquid crystal display 17 via the camera interface unit 35 and the LCD control unit 36.

  When transmitting an image signal in the data communication mode, the mobile phone 1 supplies the image signal captured by the CCD camera 20 to the image encoder 34 via the camera interface unit 35.

  The image encoder 34 converts the image signal supplied from the CCD camera 20 into an encoded image signal by compressing and encoding the image signal using a predetermined encoding method such as MPEG (Moving Picture Experts Group) 4, for example. The encoded image signal is sent to the demultiplexing unit 38. At the same time, the mobile phone 1 sends the sound collected by the microphone 15 during imaging by the CCD camera 20 to the demultiplexing unit 38 as a digital sound signal via the sound codec 40.

  The demultiplexing unit 38 multiplexes the encoded image signal supplied from the image encoder 34 and the audio signal supplied from the audio codec 40 by a predetermined method, and the modulation / demodulation circuit unit 39 converts the resulting multiplexed signal into a spectrum. The signal is subjected to spreading processing, subjected to digital / analog conversion processing and frequency conversion processing by the transmission / reception circuit unit 43, and then transmitted through the antenna 44.

  On the other hand, the mobile phone 1 can receive Web page data in the data communication mode.

  That is, when data requesting a Web page, for example, is transmitted to the data communication mode in the mobile phone 1, the Web page data is transmitted via a base station (not shown) in response to the request. The data of this Web page is received by the transmission / reception circuit unit 43 and the modulation / demodulation circuit unit 39 via the antenna 44. The transmission / reception circuit unit 43 and the modulation / demodulation circuit unit 39 send the received web page data to the main control unit 31.

  The main control unit 31 interprets the Web page data and creates a screen (image) based on the interpretation. The created screen is supplied from the main control unit 31 to the liquid crystal display 17 via the LCD control unit 36 and displayed. That is, at least a web browser application program is installed in the ROM or the storage unit 47 of the main control unit 31, and the CPU of the main control unit 31 executes the web browser application program on the RAM, thereby It functions as a browser and interprets Web page data.

  In the data communication mode, the mobile phone 1 receives data received from a base station (not shown) via the antenna 44 when receiving data of a moving image file linked to a Web page, for example. In 39, the spectrum is despread, and the resulting multiplexed signal is sent to the demultiplexer 38.

  The demultiplexing unit 38 separates the multiplexed signal into an encoded image signal and an audio signal, supplies the encoded image signal to the image decoder 37 via the synchronization bus 42, and sends the audio signal to the audio codec 40. Supply. The image decoder 37 generates a reproduction moving image signal by decoding the encoded image signal by a decoding method corresponding to a predetermined encoding method such as MPEG4, and sends the generated reproduction moving image signal to the LCD control unit 36. To the liquid crystal display 17. Thereby, for example, moving image data included in a moving image file linked to a Web page or the like is displayed.

  At the same time, the audio codec 40 converts the audio signal into an analog audio signal and then supplies the analog audio signal to the speaker 18, thereby reproducing the audio signal included in the moving image file linked to the Web page, for example. The In this case as well, the cellular phone 1 can record the data linked to the received Web page or the like on the memory card 46 via the recording / reproducing unit 45 by the user's operation, as in the case of e-mail.

  The storage unit 47 includes, for example, a flash memory element or HDD (Hard Disc Drive), which is an electrically rewritable and erasable nonvolatile memory, and various application programs executed by the CPU of the main control unit 31. Various data groups are stored. In addition, the storage unit 47 stores e-mail received in response to a user operation, moving image data included in a moving image file linked to the received Web page, and the like as necessary.

  By the way, in the conventional technique for improving the display load accompanying the update of the display screen based on the usage rate of the CPU of the main control unit 31 when displaying a complicated screen or the like, a display area or the like to be overwritten with the same display contents is provided. By omitting it, it is possible to reduce the display load associated with the display screen update and improve the display load associated with the display screen update. However, when developing an application program related to display processing, Whether the display area is overwritten with the contents cannot be directly seen, and the development engineer quantitatively calculates the display load accompanying the display screen update at the stage of developing the application program related to display processing. It was difficult to confirm.

  For this reason, it takes a lot of time for development engineers to recognize the display load associated with the display screen update, and as a result, the application program related to the developed display processing is appropriately fed back to the mobile phone and implemented. It was difficult.

  Therefore, the display area is color-coded according to the display screen update frequency and the difference between the display contents, and when the development engineer develops an application program related to display processing, the display load associated with the display screen update and the display screen update It is possible to quantitatively confirm a useless area at the time of this. Hereinafter, the display load measurement process using this method will be described.

  With reference to the flowchart of FIG. 4, the display load measurement process in the mobile phone 1 of FIG. 3 will be described. This display load measurement process is performed by receiving an instruction to start the display load measurement process when the development engineer operates the operation key 14 when the display load measurement mode is set to ON in advance. To be started.

  In the display load measurement process described with reference to the flowchart of FIG. 4, the number of display memories (for example, composed of (Video Random Access Memory)) (not shown) as buffers built in the LCD control unit 36 ( A case where the number of faces is one will be described.

  In step S1, the main control unit 31 reads setting data relating to the display load measurement mode stored in advance in the storage unit 47 (that is, setting data relating to whether or not the display load measurement mode is set to ON or OFF). Whether the display load measurement mode is set to ON is determined based on the read setting data regarding the display load measurement mode.

  If it is determined in step S1 that the display load measurement mode is not set to ON, the display load measurement process ends.

  When it is determined in step S1 that the display load measurement mode is set to ON, the main control unit 31 starts the display load measurement process by operating the operation key 14 by the development engineer in step S2. Is waited until it is determined that an instruction to start the display load measurement process has been received.

  When it is determined in step S2 that the instruction to start the display load measurement process has been received, the main control unit 31 in step S3, for example, in the display area of the liquid crystal display 17 as shown in FIG. The selection of the area for measuring the display load (display load measurement area) is accepted.

  As shown in FIG. 5A, for example, among the display areas of the liquid crystal display 17 formed by P (0,0) to P (5,5) when a pixel is represented by P (x, y). As an area for measuring the display load (display load measurement area), for example, selection of an area surrounded by a thick line (that is, an area formed by P (1,1) to P (4,4)) is accepted.

  At this time, an area formed by P (1,1) to P (4,4) is set as a target area whose display is to be updated in advance. Of course, even in this case, selection of a region formed by, for example, P (0, 0) to P (5, 5) is accepted as a region for measuring the display load (display load measurement region). Also good. That is, when a development engineer develops an application program related to display processing, selection of an arbitrary region desired to know the display load accompanying the update of the display screen is accepted. Note that the selection receiving process in step S3 may not be executed, and in particular, the selection of the display load measurement region may not be received. In that case, the display load measurement process is executed for the entire screen of the liquid crystal display 17.

  In step S4, the main control unit 31 controls the LCD control unit 36 to display the display content before the update on the liquid crystal display 17. The liquid crystal display 17 displays the display contents before the update as shown in FIG. 5A, for example, according to the control of the LCD control unit 36.

  In step S5, the main control unit 31 subsequently updates whether the display content displayed in the display load measurement area (display load measurement area) in the display area of the liquid crystal display 17 that has been selected is updated. It waits until it determines with the display content displayed in the area | region (display load measurement area | region) which measures the display load where selection was received updated.

  For example, in the display area of the liquid crystal display 17 that measures the display load that has been accepted (display load measurement area), for example, the display shown in FIG. 5A to the display shown in FIG. 5B. When the content is updated, it is determined that the display content displayed in the area (display load measurement area) for measuring the display load for which selection has been accepted has been updated.

  If it is determined in step S5 that the display content displayed in the display load measurement area (display load measurement area) for which selection has been accepted has been updated, the main control unit 31 displays in step S6 that the selection has been accepted. For each pixel in the load measurement area (display load measurement area), color information between the display contents before and after the update (between frames) (for example, in the case of a color image, R (Red), G (Green), and A difference between B (blue shade values) is determined, and it is determined whether there is a difference in color information between display contents. For example, in the case of FIGS. 5A and 5B, in a pixel represented by P (2,1) to P (4,3) in a display load measurement area (display load measurement area) where selection is accepted. Is because the color information between the display contents before and after the update (between frames) (for example, in the case of a color image, the gray values of R (Red), G (Green), and B (Blue)) are not the same. It is determined that there is a difference in color information between display contents. On the other hand, P (1,1) to P (1,4), P (2,4), P (3,4), and P in the area (display load measurement area) for measuring the display load for which selection has been accepted. In the pixel represented by (4, 4), color information between the display contents before and after the update (between frames) (for example, in the case of a color image, R (Red), G (Green), and B (Blue) ) Is the same, it is determined that there is no difference in color information between display contents.

  In the embodiment of the present invention, the color information between the display contents before and after the update (between frames) for each pixel in the display load measurement area (display load measurement area) for which selection has been accepted. For example, in the case of a color image, a difference between R (Red), G (Green), and B (Blue) gradation values is obtained, and a determination is made as to whether or not there is a difference in color information between display contents. However, the present invention is not limited to such a case, and for each of a plurality of pixels (for example, 3 pixels or 4 pixels), a difference in color information between the display contents before and after the update (between frames) is obtained, It may be determined whether there is a difference in color information.

  When it is determined in step S6 that there is a difference in color information between display contents, the main control unit 31 determines a predetermined pixel in the display load measurement region that is determined in step S7 that there is a difference in color information between display contents. The measured value of the display load at +1 is +1.

  For example, in the case of FIGS. 5A and 5B, in a pixel represented by P (2,1) to P (4,3) in a display load measurement area (display load measurement area) where selection is accepted. Is determined that there is a difference in color information between two display contents before and after the update for any pixel, and each pixel (for example, P (2,1), P (2,2), etc.) The measured value of the display load at the pixel) is +1.

  On the other hand, if it is determined in step S7 that there is no difference in color information between display contents, the main control unit 31 determines in step S8 a predetermined load load measurement area determined that there is no difference in color information between display contents. The measured value of the display load at the pixel is set to -1.

  For example, in the case of FIGS. 5A and 5B, P (1,1) to P (1,4), P (2,4) in the display load measurement area (display load measurement area) where selection is accepted. ), P (3,4), and P (4,4), it is determined that there is no difference in color information between the two display contents before and after the update for any pixel. The measured value of the display load at each pixel (for example, a pixel represented by P (1,1), P (1,2), etc.) is set to -1.

  In the processing of steps S8 to S9, the display load measurement value is set to -1 and +1. However, the present invention is not limited to this, and any negative value (for example, -2 or -3) is used. ) Or a positive value (for example, +2 or +3).

  In step S9, the main control unit 31 determines whether or not the display load has been measured for all the pixels in the display load measurement region. If it is determined in step S9 that the display load is not measured for all the pixels in the display load measurement region, the process returns to step S6, and the processes after step S6 are repeatedly executed. Thereby, for example, for all the pixels in the display load measurement region shown in FIGS. 5A and 5B, it is determined whether there is a difference in color information between the two display contents before and after the update. The display load is measured.

  For example, as shown in FIG. 5C, the display load is measured for all the pixels in the display load measurement region. Note that the display load measurement value for each pixel in the display area of the liquid crystal display 17 other than the display load measurement area where the selection is accepted is set to, for example, “0”.

  When it is determined in step S9 that the display load has been measured for all the pixels in the display load measurement region, the main control unit 31 performs step S10, for example, for each pixel in the display load measurement region as shown in FIG. As shown in FIG. 5D, for example, as shown in FIG. 5D, the display load measurement values are normalized and the areas are color-coded according to the normalized display load measurement values for each pixel. In addition, image data indicating a display load measurement value is generated.

  For example, in the case of FIG. 5D, the portion where the measured value of the display load is “+1” (the shaded portion in FIG. 5D) corresponds to the measured value of the display load for each pixel in the display load measurement region. The portion that is colored blue and the measurement value of the display load is “−1” (the hatched portion in FIG. 5D) is colored, for example, red, and the region other than the display load measurement region is colored, for example, white Thus, image data indicating the measurement value of the display load is generated based on the color-coded region.

  Note that the above-described color coding is not limited to the combination of red, blue, and white as long as the development engineer can identify a region that unnecessarily increases the display load.

  In step S11, the main control unit 31 determines whether or not an instruction to display an image based on the image data indicating the display load measurement value is received by operating the operation key 14 by a development engineer. It waits until it determines with the instruction | indication which displays the image based on the image data which shows a display load measurement value having been received.

  When it is determined in step S11 that an instruction to display an image based on the image data indicating the display load measurement value is received, the main control unit 31 controls the LCD control unit 36 to display image data indicating the display load measurement value. An image based on the above is displayed on the liquid crystal display 17. For example, as shown in FIG. 5D, the liquid crystal display 17 displays an image based on the image data indicating the display load measurement value.

  Thereby, for example, in the case of FIG. 5D, the development engineer P (1,1) to P (1,4) among the display load measurement areas (display load measurement areas) for which selection has been accepted. , P (2,4), P (3,4), and P (4,4) are overwritten with the same display contents, and the display load is unnecessarily increased. The display load associated with the display screen update in the display load measurement area can be immediately recognized visually (that is, the display load is updated to a different display content in the display load measurement area as the display content is updated). The degree of update frequency) and a useless area in the display load measurement area when the display screen is updated can be quantitatively confirmed.

  An image based on the image data indicating the display load measurement value may be displayed on an external display unit (not shown) other than the mobile phone 1.

  In the embodiment of the present invention, when the display content is updated, color information between the display content before and after the update for each pixel in the display load measurement area (display load measurement area) for which selection has been accepted. If there is no color information difference between the display contents before and after the update, it is determined that there is no color information difference between the display contents. When the display load measurement value at a predetermined pixel in the region is set to -1, and it is determined that there is a difference in color information between the display contents before and after the update, there is a difference in color information between the display contents. The measured value of the display load at a predetermined pixel in the display load measurement region determined as +1 can be set to +1.

  Then, the display load measurement value for each pixel in the display load measurement region is normalized, and the region is color-coded according to the normalized display load measurement value for each pixel, and the display is performed based on the color-coded region. Image data indicating the measurement value of the load can be generated, and the image data indicating the measurement value of the generated display load can be displayed.

  Thus, for example, in the case of FIG. 5D, among the areas (display load measurement areas) for measuring the display load for which selection has been accepted, P (1,1) to P (1,4), P (2, 4) Since the pixels represented by P (3,4) and P (4,4) are overwritten with the same display contents, they are areas that unnecessarily increase the display load. Display load associated with display screen update in the display load measurement area that can be immediately recognized visually (that is, the degree of update frequency for updating the display content in the display load measurement area as the display content is updated) In addition, it is possible to quantitatively confirm a useless area in the display load measurement area when the display screen is updated.

  Therefore, when developing an application program related to display processing, a development engineer changes the display update target area to an area that excludes the useless area that is overwritten with the same display content from the display load measurement area. Development and design can be performed, and the application program relating to display processing developed in this way can be easily fed back to the mobile phone 1 as appropriate and easily implemented. As a result, it is possible to efficiently reduce the display load associated with the display screen update (in other words, the CPU resources of the main control unit 31 associated with the display screen update can be reduced). For example, in the case of FIG. 5D, the display load required for one screen display can be reduced by 7 × 100% / 16 = about 43% compared to the conventional case.

  As described above, it is possible to reduce the time spent when developing an application program related to display processing, to prevent a wasteful increase in display load due to display screen updating, and to increase power consumption in the mobile phone 1. In addition, the movement of the display screen displayed on the liquid crystal display 17 when the user operates the operation key 14 becomes faster, and the responsiveness to the user's operation can be improved.

  Specifically, for example, when the user creates an email on the email creation screen by operating the operation key 14, the prediction function of the character that accepts input becomes faster, and the responsiveness to the user's operation can be improved. it can. Thereby, the operativity of the mobile telephone 1 can be improved.

  In the embodiment of the present invention, when it is determined that there is no color information difference between the display contents before and after the update, the display load measurement area determined that there is no color information difference between the display contents. If the measured value of the display load at a predetermined pixel in -1 is -1 and it is determined that there is a difference in color information between the display contents before and after the update, there is a difference in color information between the display contents The display load measurement value at a predetermined pixel in the determined display load measurement region is set to +1, and the display load measurement value in a region other than the display load measurement region is set to 0 as an intermediate value between −1 and +1. However, the present invention is not limited to such a case, and it is only necessary to determine which area is a useless area for overwriting the same display content.

  In the embodiment of the present invention, the number of display memories (for example, (Video Random Access Memory)) (not shown) as a buffer built in the LCD control unit 36 is one. However, the present invention is not limited to such a case, and the present invention can also be applied to a case where there are a plurality of display memories (not shown). In this case, the display load associated with the update of the display screen is measured for each display memory (not shown) or for the entire screen (for the entire screen).

  By the way, in the display load measurement process described with reference to the flowchart of FIG. 4, it is determined whether there is a difference in color information between two display contents (between frames), and a display screen between the two display contents. The display load accompanying the update of the image is measured, and the image data indicating the measured value of the display load is generated. However, the present invention is not limited to such a case, but between three or more display contents (for example, between 150 display contents) ), The display load associated with each display screen update is sequentially measured, the measured values are integrated to calculate a cumulative value, and image data indicating the cumulative value of the measured value of the display load may be generated. . Thereby, for example, when updating the display content at 15 frames / second, the display load accompanying the update of the display screen between more display contents such as 150 display contents corresponding to the display process for 10 seconds, It is possible to quantitatively check a useless area when updating the display screen. Hereinafter, the display load measurement process using this method will be described.

  With reference to the flowchart of FIG. 6, another display load measurement process in the mobile phone 1 of FIG. 3 will be described. Note that the processing in steps S21 to S29 and steps S32 to S34 in FIG. 6 is basically the same as the processing in steps S1 to S12 in FIG.

  In the display load measurement process described with reference to the flowchart of FIG. 6, for example, when the display content is updated at 15 frames / second, a display screen between 150 display contents corresponding to the display process for 10 seconds. The case where the display load accompanying the update of the display and the useless area at the time of updating the display screen are quantitatively confirmed will be described explicitly.

  When it is determined in step S29 that the display load has been measured for all the pixels in the display load measurement region, the main control unit 31 measures the display load newly measured for each pixel in the display load measurement region in step S30. Based on the value, the cumulative value of the display load measurement value is calculated.

  When the cumulative value of the display load measurement value at each pixel in the current display load measurement region is a numerical value as shown in FIG. 5E, for example, the newly measured display load measurement value is, for example, FIG. When the numerical value is as shown in 5 [F], for example, the display load as shown in FIG. 5 [G] based on the newly measured display load value for each pixel in the display load measurement region. A cumulative value of the measured values is calculated.

  In step S <b> 31, the main control unit 31 determines whether or not an instruction to end the display load measurement process has been received by operating the operation key 14 by a development engineer. If it is determined in step S31 that an instruction to end the display load measurement process has not been accepted, the process returns to step S25, and the processes in and after step S25 are repeatedly executed.

  As a result, when the operation key 14 is operated by the development engineer, the display contents are sequentially updated until an instruction to end the display load measurement process is received, and the display load is measured for each pixel in the display load measurement region. A cumulative value is calculated.

  For example, when the display content is updated at 15 frames / second, when the display load between 150 display contents corresponding to the display process for 10 seconds is measured, finally, for example, as shown in FIG. The accumulated value of the display load measurement value is calculated for each pixel in the display load measurement region.

  For example, in the case of FIG. 5 [H], each of the pixels represented by P (1,1) to P (4,4) in the display load measurement area (display load measurement area) where selection is accepted Cumulative values of display load measurement values at pixels are -149, +101, +99, -149, +120, +111, +131, +33, +132, +123, +142, -149, -149, -120, -115, and-. 149.

  If it is determined in step S31 that an instruction to end the display load measurement process has been received, the process proceeds to step S32, and the processes after step S32 are executed. That is, in step S32, for example, the cumulative value of the display load measurement value for each pixel in the display load measurement region as shown in FIG. 5 [H] is normalized, and the normalized display load for each pixel. The area is color-coded according to the accumulated value of the measured values, and image data indicating the display load display load measurement value is generated based on the color-coded area, for example, as shown in FIG.

  For example, in the case of FIG. 5 [I], a portion where the display load measurement value is other than “−149” in accordance with the display load measurement value for each pixel in the display load measurement region (the filled portion in FIG. 5 [I]). Is colored, for example, blue, the portion where the measured value of the display load is “−149” (the hatched portion in FIG. 5 [I]) is colored, for example, red, and the region other than the display load measurement region is colored, for example, white In addition, image data indicating a display load measurement value is generated based on the color-coded region.

  Of course, the portion where the measured value of the display load is other than “−149” may be provided with gradation according to the measured value of the display load. Thereby, the display load accompanying the update of the display screen in the display load measurement area, and the useless area in the display load measurement area when the display screen is updated can be more easily and quantitatively confirmed.

  After that, for example, as shown in FIG. 5 [I], an image based on the image data indicating the display load measurement value is displayed.

  Thereby, for example, in the case of FIG. 5 [I], the development engineer P (1,1), P (1,4) among the areas (display load measurement areas) in which the display load for which selection has been accepted is measured. , P (3,4), P (4,1), and P (4,4) are overwritten with the same display contents, and the display load is unnecessarily increased. The display load associated with the display screen update in the display load measurement area can be immediately recognized visually (that is, the display load is updated to a different display content in the display load measurement area as the display content is updated). The degree of update frequency) and a useless area in the display load measurement area when the display screen is updated can be quantitatively confirmed.

  Therefore, when developing an application program related to display processing, the development engineer omits a useless area for overwriting the display update target area with the same display contents from the display load measurement area (for example, FIG. 5). In the case of [I], P (1,1), P (1,4), P (3,4), P (4) from pixels represented by P (1,1) to P (4,4). , 1), and P (4, 4) in which the pixels represented by (4, 4) are omitted) and can be developed and designed. Easy to implement with feedback. As a result, it is possible to efficiently reduce the display load associated with the display screen update (in other words, the CPU resources of the main control unit 31 associated with the display screen update can be reduced). For example, in the case of FIG. 5 [I], in the pixel represented by P (1,1), P (1,4), P (3,4), P (4,1), and P (4,4). Since it is not necessary to update the display content 150-1 = 149 times, the display load required for 150 screen displays is reduced by (5 × 149) × 100% / 16 × 150 = about 31% compared to the conventional case. can do.

  As described above, the time spent when developing an application program related to display processing can be further shortened, and a wasteful increase in display load associated with display screen updating can be further prevented. In addition, the movement of the display screen displayed on the liquid crystal display 17 when the user operates the operation key 14 becomes faster, and the responsiveness to the user's operation can be further improved.

  In the display load measurement process described with reference to the flowchart of FIG. 6, for example, when updating the display content at 15 frames / second, for each pixel between 150 display contents corresponding to the display process for 10 seconds. The display load measurement value is calculated, and an image showing the display load measurement value generated and displayed based on the calculated display load measurement value is displayed. The development engineer refers to the display load measurement value in the displayed display load measurement area, refers to the display load measurement area, and displays the same display contents from the display load measurement area. However, this is not limited to this case. For example, the same display contents from the display load measurement area for each display content (between frames). It is also possible to eliminate the useless area to be overwritten and to develop and design the target area to be updated with high definition. Thereby, the display load accompanying the update of a display screen can be reduced more efficiently.

  In the case of the example of FIG. 5, for the sake of simplicity, for example, a liquid crystal display formed by P (0,0) to P (5,5) when a pixel is represented by P (x, y). Although the display area of 17 has been described, the present invention is not limited to such a case. For example, the present invention may be applied to the entire display area of the liquid crystal display 17 formed of 240 × 320 pixels.

  Furthermore, in the embodiment of the present invention, the measurement value of the display load in the display load measurement area is determined so that the development engineer can visually immediately know that the display load is unnecessarily increased. The image to be displayed is displayed on the liquid crystal display 17. However, the present invention is not limited to such a case, and the coordinate values (for example, P (1, 2)) of the pixels in the region that unnecessarily increase the display load are used. You may make it display simultaneously. In addition, the mobile phone 1 is operated for a predetermined time (for example, 15 seconds), and an image indicating the measured value of the display load in the display load measurement region is displayed based on the average value of the measured value of the display load at that time. You may make it display on the liquid crystal display 17. FIG. As a result, the display load accompanying the update of the display screen in the display load measurement area (that is, the update frequency of the display load measurement area updated to a different display content as the display contents are updated), and the display screen update In this case, a useless area in the display load measurement area can be confirmed more quantitatively.

  The present invention can be applied to a PDA (Personal Digital Assistant), a personal computer, a portable game machine, a portable music player, a portable video player, and other information processing apparatuses in addition to the cellular phone 1. Can do.

  The series of processes described in the embodiments of the present invention can be executed by software, but can also be executed by hardware.

  Furthermore, in the embodiment of the present invention, the steps of the flowchart show an example of processing performed in time series in the order described, but parallel or individual execution is not necessarily performed in time series. The processing to be performed is also included.

FIG. 2 is an external view illustrating an external configuration of a mobile phone applicable to the information processing apparatus according to the present invention. The external view which shows the structure of the other external appearance of the mobile telephone applicable to the information processing apparatus which concerns on this invention. 1 is a block diagram showing an internal configuration of a mobile phone applicable to an information processing apparatus according to the present invention. 4 is a flowchart for explaining display load measurement processing in the mobile phone of FIG. 3. Explanatory drawing explaining the display load measurement method by a display load measurement process. The flowchart explaining the other display load measurement process in the mobile telephone of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Mobile phone, 11 ... Hinge, 12 ... 1st housing | casing, 13 ... 2nd housing | casing, 14 ... Operation key, 15 ... Microphone, 16 ... Side key, 17 ... Liquid crystal display, 18 ... Speaker, 19a thru | or 19d ... Magnetic sensor, 20 ... CCD camera, 21 ... Sub-display, 31 ... Main control unit, 32 ... Power supply circuit unit, 33 ... Operation input control unit, 34 ... Image encoder, 35 ... Camera I / F unit, 36 ... LCD Control unit 37 ... Image decoder 38 ... Demultiplexing unit 39 39 Modulation / demodulation circuit unit 40 Audio codec 41 ... Main bus 42 Synchronous bus 43 Transmission / reception circuit unit 44 Antenna 45 Recording / reproduction unit , 46 ... Memory card, 47 ... Storage unit.

Claims (5)

Determination means for determining whether there is a difference in information between the display content before and after the update for each one or a plurality of pixels in the display load measurement region for measuring the display load when the display content is updated. When,
Measurement means for measuring a display load for each of one or a plurality of pixels in the display load measurement region based on a determination result by the determination means;
Generating means for generating instruction information indicating the measured value of the display load in the display load measuring area based on the measured value of the display load for each of one or a plurality of pixels in the display load measuring area measured by the measuring means When,
An information processing apparatus comprising: display means for displaying the instruction information generated by the generating means.   The measurement unit is a predetermined in a display load measurement region that is determined that there is no difference in color information between display contents when the determination unit determines that there is a difference in information between display contents before and after the update. If the measured value of the display load at one or a plurality of pixels is a negative value and it is determined that there is a difference in color information between the display contents before and after the update, the color information between the display contents The information processing apparatus according to claim 1, wherein a measurement value of the display load at a predetermined one or a plurality of pixels in the display load measurement region determined to have a difference is a positive value.   The measurement means sequentially measures the display load for each one or a plurality of pixels in the display load measurement region based on the determination result by the determination means every time the display content is updated, and the measured display load The information processing apparatus according to claim 1, wherein the measured value is accumulated for each one or a plurality of pixels.   The information processing apparatus according to claim 1, wherein the instruction information is image data indicating a display load measurement value in the display load measurement region.   The information processing apparatus according to claim 1, further comprising a selection receiving unit that receives selection of the display load measurement area from display areas for displaying display contents.

Images