JP2013114452A - Information display device, operation mode change method therefor, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce power consumption of an apparatus (information display device) during user operations, and extend operation time by a battery.SOLUTION: An information display device comprises: a first processing unit which controls each part of an apparatus; and a second processing unit which controls parts required for display control of a stored content on a display among the respective parts of the apparatus. Further, the information display device has: a first operation mode which sets the first processing unit in an operation state; and a second operation mode which sets the first processing unit in a non-operation mode or a sleep mode, sets the second processing unit in an operation mode, and performs display control of the stored content according to user's operations.

Description

  The present invention relates to an information display device, an operation mode changing method, and a program thereof, and more particularly, to an information display device having a power saving operation mode with low power consumption, an operation mode changing method, and a program thereof.

  Patent Document 1 discloses a cellular phone that can further reduce power consumption and extend continuous use time by stopping power supply to the display portion except when necessary. More specifically, according to the same document, this mobile phone starts power supply to the display by turning on the power switch by an arbitrary key input or an operation to open a flap (lid) or an incoming call. It is described that when no key input is performed or when the flap is closed, the power switch is turned off to stop the power supply to the display.

  Patent Document 2 discloses an information processing apparatus that can reduce power consumption of not only the LCD but also a control unit in the standby (sleep) power saving display mode. . More specifically, according to the document, the information processing apparatus includes a main control unit that controls a normal display mode, and a power saving display control unit that controls a power saving display mode. In the normal display mode, The main control unit is in an active state to control the normal display mode. In the power saving display mode, the main control unit is in a sleep state, and the power saving display control unit is in an active state to save the power. Controlling the display mode is described.

JP-A-11-112622 JP 2004-288087 A

  The following analysis is given by the present invention. As represented by Patent Document 1, there is known a device having a power saving operation mode (hereinafter also referred to as “power saving mode”) in which power supply to a display unit is stopped except when necessary. Patent Document 2 discloses a configuration in which a dedicated display processing unit that can perform partial display using a part of a display screen is provided in place of a light-off operation of an LCD (Liquid Crystal Display). The devices of Patent Documents 1 and 2 transition to the power saving operation mode when they are in an operation-free state for a predetermined period, and return to the normal operation mode when a key operation or the like is performed in the power saving operation mode.

  In recent years, portable devices have been developed to be multifunctional and highly functional, so that further reduction of power consumption is required even in a normal operation mode. However, neither of Patent Documents 1 and 2 discloses a measure for reducing power consumption of a portable device (information display device) during a user operation.

  The present invention has been made in view of the above-described circumstances, and its object is to further reduce the power consumption of the information display device during operation by the user, and to lengthen the operation time by the battery. It is an object to provide an information display device that can perform the operation, a method for changing the operation mode thereof, and a program.

  According to the first aspect of the present invention, a first processing unit that controls each unit of the device, and a second processing unit that controls a part necessary for display control of stored content on the display among the units of the device. A first operation mode in which the first processing unit is in an operating state, the first processing unit in a non-operating state or a sleep state, and the second processing unit in an operating state, and storage There is provided an information display device having a second operation mode in which display control is performed in accordance with a user operation using already-completed content.

According to the second aspect of the present invention, a first processing unit that controls each part of the device, and a second processing unit that controls a part necessary for display control of stored content on the display among the respective units of the device. And
The first operation mode in which the first processing unit is in an operating state, the first processing unit in a non-operating state or a sleep state, the second processing unit in an operating state, and stored content And an operation mode changing method for an information display device having a second operation mode for performing display control according to a user operation, and at least when storage of content being displayed according to the user operation is completed The second operation mode is changed from the first operation mode until the second operation mode receives a predetermined operation for requesting display of content other than the stored content. An operation mode change that returns to the first operation mode upon receiving a predetermined operation requesting display of content other than the stored content. The law is provided. This method is associated with a specific machine called an information display device that displays content.

  According to the third aspect of the present invention, a first processing unit that controls each unit of the device, and a second processing unit that controls a part necessary for display control of stored content on the display among the units of the device. A first operation mode in which the first processing unit is in an operating state, the first processing unit in a non-operating state or a sleep state, and the second processing unit in an operating state, and storage A program that is executed by an information display device having a second operation mode in which display control is performed according to a user's operation using already-completed content, and at least storage of the content being displayed according to the user's operation Is completed, a process for making a transition from the first operation mode to the second operation mode, and a request for displaying content other than the stored content in the second operation mode. Until the operation is accepted, the information display device performs processing to operate in the second operation mode and to return to the first operation mode when a predetermined operation requesting display of content other than the stored content is accepted. A program to be executed by a computer mounted on the computer is provided. This program can be recorded on a computer-readable storage medium. That is, the present invention can be embodied as a computer program product.

  ADVANTAGE OF THE INVENTION According to this invention, the power consumption during operation of the apparatus (information display apparatus) by a user can be reduced and the operation time by a battery can be lengthened.

It is a figure which shows the structure of one Embodiment of this invention. It is a figure which shows the transition of the operation mode in one Embodiment of this invention. FIG. 3 is a continuation diagram of FIG. 2. FIG. 4 is a continuation diagram of FIG. 3. It is a block diagram which shows the structure of the information display apparatus of the 1st Embodiment of this invention. It is a figure which shows the site | part which becomes an active state in the 1st operation mode in FIG. It is a figure which shows the site | part which becomes an active state in the 2nd operation mode in FIG. It is a flowchart showing operation | movement of the information display apparatus of the 1st Embodiment of this invention. It is a figure which shows the step which the display of a certain screen was completed in the information display apparatus of the 1st Embodiment of this invention. It is a figure which shows the return area | region set in the screen of FIG. It is a flowchart for demonstrating the example of the specific process in step S005-S006 of FIG. FIG. 4 is a diagram illustrating a relationship between a screen display range and a range stored in a memory 22 in the first embodiment of the present invention.

  First, an outline of an embodiment of the present invention will be described with reference to the drawings. In one embodiment of the present invention, as shown in FIG. 1, a first processing unit 10 </ b> A, a second processing unit 20 </ b> A, and a display (display unit) 30 that control each unit of the device and acquire contents from the outside, And an information display device including the operation unit 40. Note that the reference numerals of the drawings attached to this summary are attached to the respective elements for convenience as an example for facilitating understanding, and are not intended to limit the present invention to the illustrated embodiment.

  The second processing unit 20A includes a CPU 21, a memory 22, and a display control unit 23 that performs display on a display, and is necessary for display control of content stored in the memory 22 on the display 30 among the above-described units. Control important parts.

  This information display device stores the first operation mode in which the first processing unit 10A is in the operating state, the first processing unit 10A in the non-operating state or the sleep state, and the second processing unit 20A in the operating state. And a second operation mode for performing display control (offline display control) in accordance with the user's operation using the content.

  Specific examples of the information display device having the above-described configuration include a mobile phone terminal, a smart phone, a PDA (Personal Digital Assistant), a personal computer, a tablet terminal, an electronic book reader, an electronic dictionary, a digital camera, and various information home appliances. Etc.

  Next, the operation of the information display device described above will be described. As shown in FIG. 2, when any function is selected from the menu screen, this information display device operates in the first operation mode and displays a screen of the function selected by the user (FIG. 2). References 100A to 100B). At this time, the first processing unit 10A acquires screen data to be displayed on the display 30, that is, content, from an auxiliary storage device or an external network as necessary.

  In parallel with the completion of the display of the screen or the display of the screen, the information display device stores the data of the displayed screen in the memory 22 of the second processing unit 20A. In addition, the information display device transitions to the second operation mode at a timing determined for each type of information display device and usage such as completion of screen display or elapse of a predetermined time after screen display (FIG. 2). Reference 100B). When transitioning to the second operation mode, at least the first processing unit 10A enters a non-operation state or a sleep state, so that power consumption is reduced compared to a state in which the operation is performed in the first operation mode.

  Thereafter, the information display device operates in the second operation mode as long as the operation content received from the user is content that can be displayed using the content stored in the memory 22 such as a scroll operation (enlargement / reduction is also possible). (See reference numeral 100C in FIG. 2). In the second operation mode, when a predetermined operation for requesting display of content other than the stored content, for example, a jump (move) operation of another site is received, the information display device Returning to the operation mode, the next screen data is read (information acquisition via the necessary network) and the next screen is displayed (see reference numeral 100D in FIG. 2).

  In parallel with the completion of the display of the next screen or the display of the next screen, the information display device stores the data of the displayed next screen, that is, the display content in the memory 22 of the second processing unit 20A. Further, the information display device transitions to the second operation mode at any timing such as completion of display of the next screen or elapse of a predetermined time after display of the next screen (see reference numeral 100D in FIG. 3). When transitioning to the second operation mode, at least the first processing unit 10A enters a non-operation state or a sleep state, and thus power consumption is reduced compared to the first operation mode.

  Thereafter, the information display device operates in the second operation mode as long as the operation content received from the user can be displayed using the content stored in the memory 22 such as an enlargement / reduction operation (which can be scrolled). (See reference numeral 100E in FIG. 3). On the other hand, when a predetermined operation requesting display of content other than the stored content, for example, a jump (move) operation of another site is accepted, the information display device returns to the first operation mode. Then, the next screen data is read (information acquisition via the necessary network) and the next screen is displayed (see reference numeral 100F in FIG. 3).

  As described above, according to an embodiment of the present invention, the information display device can be consumed by making a transition to the second operation mode at a predetermined timing determined for each type and use of the information display device. Electric power can be reduced. Of course, as shown in FIG. 5, when a predetermined condition such as no operation for a predetermined time is satisfied, both the first and second processing units 10A and 20A are set to the non-operating state or the sleep state, and the display is turned off. It is also possible to make a transition to the power saving mode. Further, in this power saving mode, when a predetermined condition such as the occurrence of an input event is established, the operation mode is restored to either the first or second operation mode, and the above-described operation mode transition is continued. Good.

[First Embodiment]
Next, a first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 5 is a block diagram showing the configuration of the information display apparatus according to the first embodiment of the present invention. Referring to FIG. 5, a configuration including a first processing unit 10, a second processing unit 20, a display 30, an operation unit 40, and an external peripheral circuit 50 is shown.

  The first processing unit 10 includes a CPU (Central Processing Unit) 11 that performs arithmetic processing, a memory 12, a display control unit (video controller) 13 that performs screen display processing on the display 30 in accordance with instructions from the CPU 11, and other peripheral circuits 14. And a unit that controls each part of the display device.

  The external peripheral circuit 50 is a circuit for realizing other functions not included in the first processing unit 10. For example, when the information display device is a mobile phone terminal, the external peripheral circuit 50 corresponds to a wireless communication unit or the like for receiving content requested by the user. Similarly, when the information display device is an electronic book reader, the unit that reads the electronic book content stored in the flash memory or the like corresponds to the external peripheral circuit 50.

  The display 30 is a display device such as an LCD (Liquid Crystal Display) or an organic EL (Organic Electro-Luminescence) display. The operation unit 40 includes a hardware key, a pointing device, a touch panel superimposed on a display, or the like.

  The second processing unit 20 is a memory 22 for storing display screen data 221 and return area data 222 displayed on the display 30, and second display control for performing screen display processing on the display 30 in accordance with instructions from the CPU 21. The display screen data 221 and the return area data 222 are stored in the unit (video controller) 23, the memory 22, and the data stored in the memory 22 according to the user operation received from the operation unit 40 is displayed on the display 30. And a CPU 21 that displays the above. Since the second processing unit 20 implements so-called offline display, it can also be called an offline display processing unit.

  The CPU 21 of the second processing unit 20 only needs to have sufficient performance to perform display on the display 30 according to the user's operation, and therefore, the CPU 21 of the second processing unit 20 has a lower power consumption than the CPU 11 of the first processing unit 10. it can. Further, the second processing unit 20 does not need to communicate with the external peripheral circuit 50 or control the peripheral circuit 14. For this reason, the second processing unit 20 can operate with lower power consumption than the first processing unit 10.

  The above configuration can also be realized by adding the above-described second processing unit 20 to an existing information display device. In the example of FIG. 5, the first processing unit 10 and the second processing unit 20 are arranged in series between the display 30 and the operation unit 40 and the external peripheral circuit 50. The structure which connected the 1st process part 10 and the 2nd process part 20 with respect to the operation part 40 in parallel may be sufficient.

  Here, an operation mode of the information display apparatus of the present embodiment will be described. As shown in FIG. 6, in the first operation mode, the first processing unit 10 is in an active state (operation state), the second processing unit 20 is in a sleep state (inactive state), and the first processing unit 10 In this state, the display 30 and the operation unit 40 are directly controlled. In the first operation mode, since communication with the external peripheral circuit 50 is also possible, display content can be acquired from an auxiliary storage device or a network as necessary.

  The first operation mode corresponds to a state in which the conventional information processing apparatus operates with the display 30 turned on, and functions other than the screen display achieved by the peripheral circuit 14 and the external peripheral circuit 50 are simultaneously performed. Corresponds to the operating state.

  On the other hand, as shown in FIG. 7, in the second operation mode, the first processing unit 10 is in the sleep state (inactive state), and the second processing unit 20 is in the active state (operation state). 20 is a state in which the display 30 and the operation unit 40 are controlled. Further, in the second operation mode, control of the peripheral circuit 14 and communication with the external peripheral circuit 50 are impossible, but it is possible to operate with lower power consumption than in the first operation mode.

  The transition of the operation mode in the information display apparatus shown in FIG. 1 is realized by a computer program such as firmware that causes the computer constituting the information display apparatus to execute the above-described transition of the operation mode using the hardware. You can also.

  The information display device of the present embodiment reduces power consumption by switching between the above two operation modes even when the display is displayed. Of course, the information display apparatus of the present embodiment may also be provided with a power saving mode in which the backlight of the display 30 is turned off on the condition that the non-operation state for a predetermined time has continued (see FIG. 4).

  Next, the operation of the information display apparatus of this embodiment will be described in detail with reference to the drawings. In the following description, the display operation is performed using the data stored in the memory 22 in the second operation mode at the timing when the screen display on the display 30 is completed in the first operation mode. First operation mode on condition that a predetermined operation (operation of link 103, button 104, hardware key 105 in FIG. 9) other than (scroll, enlargement / reduction, range selection in display text, etc.) has been performed It is assumed that a condition for transition to is established.

  FIG. 8 is a flowchart showing the operation of the information display device of the first exemplary embodiment of the present invention. Referring to FIG. 8, the information display apparatus according to the present embodiment enters the first operation mode in which the first processing unit 10 is in an active state when an event such as a power-on operation, user input, or external data reception occurs. The content corresponding to the event that has occurred is displayed on the display 30 (step S001).

  Here, it is assumed that a connection operation to a certain site is performed and a screen as shown in FIG. 9 is displayed. Until the display of the screen shown in FIG. 9 is completed, the information display apparatus 100 continues to operate in the first operation mode (NO in step S002). When the display of the screen shown in FIG. 9 is completed (YES in step S002), the second processing unit 20 of the information display device is activated and stores the display screen image shown in FIG. 9 as display screen data 221 in the memory 22 (step S003). ).

  Next, the second processing unit 20 of the information display device analyzes the display screen data 221 stored in the memory 22 and generates return area data 222 as a return condition from the second mode to the first mode, Save in the memory 22. The return area data 222 is, for example, coordinate data indicating the area of the link 103 or the area of the button 104 on the display screen as shown in FIG. The return area data 222 is used to determine whether or not the link 103 or button 104 selection operation or activation operation on the display screen has been performed.

  When the storage of the display screen data 221 and the return area data 222 is completed, the information display device sets the first processing unit 10 to the sleep state (see FIG. 7) and starts the operation in the second operation mode (step S005). . In the second operation mode, as shown in FIG. 7, since the first processing unit 10 and the external peripheral circuit 50 are in the sleep state (inactive state), the power consumption is reduced. Alternatively, in the second operation mode, the second processing unit 20 is in an active state, and display control corresponding to a scroll operation from the user is performed within a range that can be handled using the display screen data 221 stored in the memory 22. Perform (NO in step S006).

  Specifically, the text display “Example Page” and “Example text” in FIG. 9 does not require switching of the screen display even when the user performs a tap (click) operation, and thus the operation in the second operation mode is not performed. Will continue. In addition, when the user taps (clicks) the scroll button 102 in FIG. 9, the page display range moves. However, since the display can be displayed using the display screen data 221 stored in the memory 22, the second operation mode is performed. The operation at is continued.

  Thereafter, when a return condition to the first operation mode is satisfied, such as when the user performs an operation on the return area data 222 (operation of the link 103, the button 104, and the hardware key 105 in FIG. 9) (Step S1). The information display device starts operation in the first operation mode (YES in S006) (to step S001).

  Here, taking the case where a touch panel is provided as the operation unit 40 as an example, the detailed operation (second operation mode) of steps S005 and S006 in FIG. 8 will be described in detail with reference to FIG.

  FIG. 11 is a flowchart for explaining an example of specific processing in steps S005 to S006 of FIG. Referring to FIG. 11, first, the second processing unit 20 initializes a state variable [IsDOWN] (step S100). This variable is for indicating whether or not the user is performing a scrolling operation, and is set to “True” if the user is scrolling, and “False” if the user is not scrolling.

  Thereafter, during operation in the second operation mode (NO in steps S101 to S102), when a user input event is detected (YES in step S102), the second processing unit 20 determines whether or not it is a touchdown event. Is determined (step S103). The touchdown event is an event that occurs when a touch panel press with a user's finger or the like is detected.

  When the touchdown event has occurred (YES in step S103), the second processing unit 20 determines whether or not the operation is a scroll operation (step S104). If it is determined that the operation is not a scroll operation (NO in step S104), the second processing unit 20 stores the detected coordinates as initial coordinates and sets the state variable [IsDOWN] to “True” (step S105). ). The initial coordinates stored here are assumed to be “Point A”.

  On the other hand, when the occurrence of the touchdown event continues (YES in step S103) and it is determined that the operation is a scroll operation (state variable [IsDOWN] = “True”) (YES in step S104), the second process The unit 20 stores the detected coordinate “Point B” and calculates a distance (ΔL) from the initial coordinate Point A stored in Step S105 (Step S106).

  Next, the second processing unit 20 acquires a display screen image scrolled by the calculated distance (ΔL) from the memory 22 (step S107). Then, the second processing unit 20 updates the display content of the display 30 using the acquired display screen image (step S108). As described above, the display screen corresponding to the user's scroll operation is updated in the second processing unit 20 without activating the first processing unit 10.

  On the other hand, when a user input event is detected (YES in step S102) and a touch-up event is detected (YES in step S109), the second processing unit 20 resets the state variable [IsDOWN] to “False”. (Step S110).

  Next, the second processing unit 20 stores the coordinates where the touch-up is detected as PointC (step S111), and confirms whether or not the initial coordinates PointA and the touch-up coordinates PointC stored in step S105 match (step S111). Step S112). Here, if the initial coordinates Point A and the touch-up coordinates Point C do not match, it indicates that the user's scroll operation has ended, so the second processing unit 20 determines that return is not necessary, and returns to Step S101 (Step S112). NO).

  On the other hand, when the initial coordinates Point A and the touch-up coordinates Point C match, a so-called tap operation has been performed. In this case, the second processing unit 20 acquires the return area data 222 from the memory 22 (step S113), and checks whether or not a tap has been performed within the area indicated by the return area data 222 (step S114). Here, when the touch-up coordinate PointC is outside the area indicated by the return area data 222, the second processing unit 20 determines that the return is not necessary, and returns to Step S101 (NO in Step S114).

  On the other hand, when the touch-up coordinate PointC is within the area indicated by the return area data 222 (NO in step S114), the second processing unit 20 determines that the return condition is satisfied (step S115). Thereafter, the process returns to step S001 in FIG. 8, and processing corresponding to the user's instruction such as link 103 activation and button 104 activation is started.

  Further, for example, when a user input event that is neither touchdown nor touchup occurs, such as pressing of the hardware key 105 in FIG. 9 (NO in step S109), the second processing unit 20 generates another event. The second processing unit 20 determines that the return condition is satisfied (step S117).

  As described above, according to the present embodiment, the second processing unit 20 that can perform the update display according to the user's operation on the screen being displayed is provided. Since the operation is minimized, the power consumption of the information display device can be reduced, and the operation time of the battery can be extended.

  In addition, the transition of the operation mode as described above is different from the transition to the power saving mode and the transition to the standby mode mainly by turning on / off the backlight of the existing display, so that the user is not aware of the transition of the operation mode. It is designed to achieve ease of use.

  In the above-described embodiment, the screen samples of FIGS. 9 and 10 have been described. However, the data stored as the display screen data 221 is not limited to the display range data of the display 30. For example, as shown in FIG. 12, not the displayable range 106 of the display area 101 but the range 107 that can be scrolled by the scroll button 102 may be stored as the display screen data 221.

  In the above-described embodiment, the coordinates are acquired from the display screen data 221 so that the load on the second processing unit 20 is reduced and the power consumption in the second operation mode is reduced, and the link 103 or the button 104 is pressed. Although the detection method is adopted, when the second processing unit 20 performs the same content display processing as the first processing unit 10 and the link 103 pressing event or the button 104 pressing event is detected from the displayed content. In addition, the first operation mode may be restored.

  Further, in the above-described embodiment, the example in which the operation is continued in the second operation mode with respect to the scroll operation has been described. However, the display screen data 221 is saved so as to correspond to the enlargement / reduction operation (pinch operation). Then, as shown in FIG. 3, it is possible to continue the operation in the second operation mode even for the enlargement / reduction operation. The present invention can also be applied to a case where a specific display update operation is performed by a double tap (double click), a swipe operation, or the like depending on an application being displayed.

  In the above-described embodiment, it has been described that the link 103 is tapped to return to the first operation mode. However, the first processing unit 10 reads the linked content in advance and displays it. It can also be saved as screen data 221. By performing such prefetching processing, it is possible to continue the operation in the second operation mode while performing the display requested by the user for the display operation of the link destination.

  In the above-described embodiment, an example in which a touch panel is provided as the operation unit 40 has been described. However, the present invention can also be applied to a case where a general input device such as a mouse, a keyboard, or a button is used. .

  In the above-described embodiment, the first processing unit 10 has been described as including the CPU 11, the memory 12, the display control unit 13, and the peripheral circuit 14. However, the components of the first processing unit 10 are limited. However, it can be changed as appropriate depending on the type and use of the information display device. Similarly, the configuration of the second processing unit 20 may be any configuration that can perform display corresponding to the user operation similar to the second operation mode described above. Further, depending on the type and application of the information display device, as shown in FIG. 1, there may be a form in which the external peripheral circuit 50 is omitted.

  Further, in the above-described embodiment, it has been described that the display mode is changed from the first operation mode to the second operation mode at the timing when the display of the screen is completed. Depending on the function and the type of application program, the user may frequently perform operations other than display-related operations immediately after the screen is displayed. In this case, the first operation mode may be changed to the second operation mode on condition that a predetermined time has elapsed after the screen display. In addition, instead of applying to all screen displays, it is possible to limit the types of functions and application programs to be applied.

  In the above-described embodiment, the second processing unit 20 has been described as storing the screen display image in the memory 22. However, in the first operation mode, the first processing unit 10 sequentially stores the screen display image in the memory 22. You may make it preserve | save. In the above-described embodiment, the first processing unit 10 and the second processing unit 20 have been described as having independent memories. However, the first processing unit 10 and the second processing unit 20 share the memory. Alternatively, a configuration in which one refers to the other memory can be employed.

  In the above-described embodiment, the information display device has been described as including one display 30. However, when the information display device includes a plurality of displays, the display used in the first operation mode and the second operation mode is used. You may switch.

  It should be noted that the disclosures of the above patent documents are incorporated herein by reference. Within the scope of the entire disclosure (including claims) of the present invention, the embodiments and examples can be changed and adjusted based on the basic technical concept. Further, various combinations or selections of various disclosed elements (including each element of each claim, each element of each embodiment or example, each element of each drawing, etc.) within the scope of the claims of the present invention. Is possible. That is, the present invention of course includes various variations and modifications that could be made by those skilled in the art according to the entire disclosure including the claims and the technical idea.

10, 10A 1st processing part 11 CPU
12 Memory 13 Display Control Unit 14 Peripheral Circuit 20, 20A Second Processing Unit 21 CPU
22 Memory 23 Display Control Unit 30 Display 40 Operation Unit 50 External Peripheral Circuit 100, 100A to 100G Information Display Device 101 Display Area 102 Scroll Button 103 Link 104 Button 105 Hardware Key 106 Displayable Range 107 Scrollable Range 221 Display Screen Data 222 Return area data

Claims (10)

A first processing unit for controlling each unit of the device, and a second processing unit for controlling a part necessary for display control of stored content on the display among the units of the device,
A first operation mode in which the first processing unit is in an operating state;
A second operation mode in which the first processing unit is set to a non-operating state or a sleep state, the second processing unit is set to an operating state, and display control is performed according to a user operation using stored content; ,
An information display device comprising:   The information display device according to claim 1, wherein the information display device operates in the second operation mode until a predetermined operation for requesting display of content other than the stored content is received in the second operation mode.   The information according to claim 1, wherein the second processing unit includes a memory independent of the first processing unit, stores content in the memory, and performs display control according to the operation of the user. Display device.   4. The information display device according to claim 1, wherein when the storage of the content being displayed according to a user operation is completed, the information display device transitions from the first operation mode to the second operation mode.   The information display apparatus according to claim 2, wherein the predetermined operation is a request operation for content other than the stored content.   3. The information display device according to claim 2, wherein the predetermined operation includes selection of a link displayed on the display using the stored content or pressing of a button object. The second processing unit extracts an area on the screen that transitions to the first operation mode from the stored content,
The information display device according to any one of claims 1 to 6, wherein a transition to the first operation mode is made when a position on the screen where a selection operation is performed by the user is included in an area on the screen.   In the first operation mode or the second operation mode, when the no-operation state continues for a predetermined period, the power-saving operation mode in which both the first and second processing units are in a non-operation state or a sleep state is set. The information display device according to claim 1, which makes a transition. A first processing unit for controlling each unit of the device, and a second processing unit for controlling a part necessary for display control of stored content on the display among the units of the device,
A first operation mode in which the first processing unit is in an operating state;
A second operation mode in which the first processing unit is set to a non-operating state or a sleep state, the second processing unit is set to an operating state, and display control is performed according to a user operation using stored content; A method for changing an operation mode of an information display device, comprising:
At least when the storage of the content being displayed according to the user's operation is completed, the transition is made from the first operation mode to the second operation mode,
In the second operation mode, it operates in the second operation mode until a predetermined operation for requesting display of content other than the stored content is received, and display of content other than the stored content is requested. An operation mode changing method characterized by returning to the first operation mode when a predetermined operation is received. A first processing unit for controlling each unit of the device, and a second processing unit for controlling a part necessary for display control of stored content on the display among the units of the device,
A first operation mode in which the first processing unit is in an operating state;
A second operation mode in which the first processing unit is set to a non-operating state or a sleep state, the second processing unit is set to an operating state, and display control is performed according to a user operation using stored content; A program that is executed by an information display device having
At least when the storage of the content being displayed according to the user's operation is completed, a process of transitioning from the first operation mode to the second operation mode;
In the second operation mode, it operates in the second operation mode until a predetermined operation for requesting display of content other than the stored content is received, and display of content other than the stored content is requested. A program that causes a computer mounted on the information display device to execute a process of returning to the first operation mode when a predetermined operation is received.

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