JP2013117976A - Electronic apparatus and driving method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video display device which can contribute to a power saving measure for power supply from a power generating plant.SOLUTION: An electronic apparatus includes a first power supply part, a second power supply part, a power supply switching part and a control part. The first power supply part is charged while a commercial power supply is connected. The second power supply part connected as an external device is charged together with the first power supply part while the commercial power supply is connected. The power supply switching part supplies power from at least one of the first power supply part and the second power supply part when it is commanded to stop the connection to the commercial power supply. When the power supply switching part performs switching so as to supply power from the second power supply, the control part reduces the size of a display area displayed by the display part, moves the display location after a prescribed time has elapsed, and switches to a reception mode in which power consumption is small.

Description

  Embodiments described herein relate generally to an electronic device that can operate using a non-commercial power source and a driving method thereof.

  For example, a video display device that is a portable electronic device such as a personal computer can operate even when it is not connected to a commercial power source. Also, television receivers that receive television broadcasts have been put to practical use that operate mainly with a battery.

Japanese Patent No. 3730414 JP 2005-339067 A Utility Model Registration No. 3166634 JP 2009-118630 A Utility Model Registration No. 3127721 JP 2010-79025 A

  In recent years, power saving measures for power supplied from a power plant of a power supply company have become a hot topic. If the total power consumption in the jurisdiction area increases relative to the amount of power supplied from the power plant, a power outage will occur, which may cause a great deal of damage in factories and hospitals.

  The present invention provides an electronic device that can contribute to power saving measures and a driving method thereof for power supply from a power plant.

  For example, an electronic device that charges a power source of an external device connected to its own power source when operating with a commercial power source as a power supply source, and supplies power from the own power source or the external device when viewing of a broadcast is requested An apparatus and a driving method thereof are provided.

  In the embodiment, the electronic device includes a first power supply unit, a second power supply unit, a power supply switching unit, and a control unit. The first power supply unit is charged while the commercial power supply is connected. The second power supply unit is connected as an external device, and is charged together with the charge to the first power supply unit while the commercial power supply is connected. The power source switching unit supplies power from at least one of the first and second power sources when an instruction to stop connection with the commercial power source is given. When the power supply switching unit switches to supply power from the second power supply, the control unit reduces the size of the display area of the display displayed by the display unit, and when the display position has passed the predetermined period And move to a reception mode with low power consumption.

Schematic which shows an example of the whole structure of the television receiver which is embodiment. Schematic which shows an example of the typical outline | summary of a remote controller. Schematic which shows an example of operation | movement of the television receiver of FIG. Schematic which shows the typical example of the some display examples which the television receiver of FIG. 1 outputs to a display device. Schematic which shows an example of the image switching timing when the television receiver of FIG. 1 switches from a full segment receiving state to a one segment receiving state. Schematic which shows the typical example of the screen in the indicator at the time of the power-saving operation | movement of the television receiver of FIG. Schematic which shows the example of the backlight mechanism in the indicator of the television receiver of FIG. Schematic which shows the other example of the backlight mechanism in the indicator of the television receiver of FIG. Schematic which shows the example of a control of a remote controller and a menu when performing the energy-saving setting for power saving with respect to the television receiver of FIG. Schematic which shows the example of the power supply between the television receiver of FIG. 1, and an external apparatus. Schematic which shows the example of the connection between the television receiver of FIG. 1, and the external apparatus connected, and the power supply to an external apparatus. The figure which shows an example of the setting screen of the power saving operation | movement and / or peak shift operation | movement utilized in this embodiment. The figure which shows the example of the indicator which shows the brightness | luminance state which is displayed temporarily at the time of transfer to a peak shift operation | movement when a television receiver starts operation | movement with commercial AC power, and disappears after that.

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

  1 shows an example of a video display device (for example, a television receiver or a personal computer (PC)) to which the embodiment is applied, and the elements, configurations, and functions described below are realized by hardware. It may be a thing, and what is implement | achieved by software using a microcomputer (CPU, processing apparatus) etc. may be used.

  In the video display apparatus (television receiving apparatus) shown in FIG. 1, the UHF antenna 101 can catch radio waves of terrestrial television broadcasting, and power is supplied to the booster 102. In the current terrestrial digital broadcasting, broadcast signals of 12 segments (may be referred to as full segments or full segments) and one segment (or may be referred to as one segment) are set. The UHF antenna 101 is used to receive at least a full segment broadcast signal. Of course, it is also possible to receive one seg via the UHF antenna 101. Note that the indoor antenna 105 is used when mainly receiving a one-segment broadcast signal. Even when the indoor antenna 105 is used, for example, the distance to the broadcast station is relatively short, for example, there are few things that block broadcast signals (radio waves) with an area of about 10 km or the broadcast station, or relatively A full segment can also be received according to several factors, such as being at altitude or having a receiving position at a high altitude.

  The UHF antenna 101 may be referred to as an external antenna or an outdoor antenna, and the indoor antenna 105 may be referred to as an internal antenna or an indoor antenna. Also, the indoor antenna 105 can be replaced with a one-seg antenna 106 that is provided integrally with the television receiver and mainly receives one-seg. Note that the one-segment antenna 106 may be fixed to a frame or a housing of a television receiver, for example, as a monopole type (rod antenna). The one-seg antenna 106 may be positioned so as to be self-supporting in the vicinity of the television receiver with a stand (leg).

  Further, the one-seg antenna 106 can also function as a diversity antenna when used together with the indoor antenna 105.

  The UHF antenna 101 can be connected to the tuner 110 via the antenna connection board 108. The indoor antenna 105 can also be connected to the tuner via the antenna connection board 108. When the use state of the UHF antenna 101 is changed to the use of the indoor antenna 105 itself, the terminal of the UHF antenna 101 is pulled out from one connector of the antenna connection plate 108, and instead the terminal of the indoor antenna 105 is connected to the antenna connection plate. 108 connected to the one connector. Alternatively, the UHF antenna 101 and the indoor antenna 105 may be constantly connected to the two connectors of the antenna connection plate 108, and either one may be selected by the changeover switch, and the selected antenna may be in use. . Furthermore, as described above, the antenna connected mainly to the antenna connection board 108 at the time of one-segment reception may be set to either the indoor antenna 105 or the built-in antenna 106 by the switching unit 107. Further, the output of the indoor antenna 105 and the one-segment antenna 106 may be one in which either output is selected at the time of output to the antenna connection board 108 in accordance with switching by the switching unit 107 (for receiving broadcast signals). The antenna used is automatically switched).

  The tuner 110 includes a full segment reception circuit 111 and a one segment reception circuit 112, and is set to one of the reception states. A control signal for switching the reception state is output from the control block 400. The control block 400 will be described in more detail later.

  The demodulated program signal included in the channel selected by the tuner 110 is input to the signal processor 200. The signal processor 200 includes a video signal processing circuit 201 and an audio signal processing system 202. The video signal processing circuit 201 decodes (decodes) the encoded video signal into the original baseband video signal. Examples of the encoding / decoding method include MPEG (Moving Picture Experts Group), H.264, and the like. There are methods such as H.264 / AVC (Advanced Video Coding). The baseband video signal output from the video signal processing circuit 201 is supplied to the display device 300.

  The audio signal processing circuit 202 extracts an audio stream from the program signal and decodes it. The decoded audio signal is converted into an analog signal by the digital-analog converter 203 and supplied to the speaker 204. The example of FIG. 1 shows a headphone, but the present invention is not limited to the headphone, and may be a stationary speaker.

  The signal processor 200 can be connected to an external device under the control of the control block 400. For example, it can be connected to an external information recording / reproducing apparatus such as an optical disc (DVD, BD (registered trademark)) recording / reproducing apparatus via an HDMI (High-definition Digital Media Interface) 205. Therefore, the signal processor 200 can receive a reproduction signal from an external information recording / reproducing apparatus, and can perform signal processing for display output and signal processing for audio output. Further, it is possible to transmit a signal for recording to an external information recording / reproducing apparatus.

  The signal processor 200 can also be connected to a hard disk drive (HDD) 207 via a USB (Universal Serial Bus) 206 under the control of the control block 400. The hard disk drive 207 is equipped with a battery 208, and can be driven by itself for about 2-3 hours at the time of a power failure. Note that the battery 208 is charged by supplying power from the television receiver side through power lines 211a and 211b independent of the USB cable used for connection with the USB 206. 1 shows an example in which the power supply line is divided before and after the USB 206. However, since the power supply line is a dedicated line, it is not always necessary to go through the USB 206, and if the power can be supplied from the television receiver to the battery 208, the configuration is possible. The route can be arbitrarily set. As an example of the USB cable, as shown in FIG. 11, a cable in which a data line group 1211d and a power supply line 1211p included in a normal USB cable are integrated in the same connector (package) can be used.

  The control block 400 includes a main microprocessing unit (hereinafter referred to as “main MPU”) 401 and a sub-microprocessing unit (hereinafter referred to as “sub-MPU”) 402. The main MPU 401 includes an electronic program guide management system (hereinafter referred to as EPG management system) 401a, an operation state control system 401b, and a display state control system 401c.

  The names of the control block 400, the names of the main MPU 401 and the sub MPU 402, (hereinafter referred to as the EPG management system) 401a, the operation state control system 401b, and the display state control system 401c are not limited to such names. For example, a main control circuit, a sub control circuit, an EPG processing circuit, an operation state control circuit, a display state control circuit, or a module or a block may be used instead of the circuit. Moreover, although the name was classified according to the function here, a name in which the functions are integrated or a combination of the functions may be given.

  The EPG management system 401 a can acquire program information included in the Internet or broadcast signal, create program guide data, and store it in a random access memory (hereinafter referred to as RAM) 451. Further, the EPG management system 401 a can read out the program table stored in the RAM 451 and output it to the display device 300 in cooperation with the control operation of the display state control system 401 c. Furthermore, the information of the program guide stored in the RAM 451 can be corrected and changed periodically.

  Note that the RAM 451 may be any memory that can be written and read, and includes a nonvolatile memory. Of course, the RAM 451 may store various data (icons, warning character information, channel numbers, etc.) for on-screen display (OSD). In addition, a read only memory (ROM) 452 is connected to the control block 400, and various software used in, for example, a television receiver is stored in the ROM 452. When the television receiver operates, the software is expanded in, for example, the RAM 451 and executes an operation procedure according to an operation signal or a command signal.

  The operation state control system 401b controls the state of the block in the television receiver in response to an external or internal state signal or an external operation signal. For example, the reception state in the tuner 110 can be switched from the one-segment reception state to the full-segment reception state, or can be switched from the full-segment reception state to the one-segment reception state. Furthermore, the signal processing state in the signal processor 200 can be controlled. For example, it is also possible to control color adjustment, brightness adjustment, partial shut-off of the power supply, etc. according to set conditions relating to automatic or manual.

  The display state control system 401c can adjust the backlight of the display device 300, control the illumination area of the backlight, and further control the luminance of the video signal, the enlargement / reduction control, and the movement control of the display position. be able to.

  The sub MPU 402 includes a power supply control system 402a and an operation signal support system 402b.

  The power supply control system 402a is operated by any one of DC (direct current) ± 5V supplied by the DC / DC converter 501 and used for the operation of the main MPU 401, for example, to the main MPU 401 of ± 12V and 31V (or 24V). ON / OFF of the power supply, for example, supply of the driving current of the backlight of the display 300, etc. are mainly controlled. For example, plug 551 is not connected to a commercial power source (outlet) for the power required for standby for operation signal correspondence system 402b described below to receive an operation signal from remote controller 700 (plug is not connected). The power supply control system 402a maintains the power supply so long as the power supply is not substantially disabled, such as when the battery 553 has been unplugged, or when the charge amount of the battery 553 has dropped to a non-discharge level. (Supplied from the AC adapter 552).

  The operation signal correspondence system 402b analyzes the operation signal when the operation signal transmitted from the remote controller 700 is input via the remote control signal receiver 455. The operation signal correspondence system 402b controls the operation state of the television receiver according to the result of analyzing the operation signal. As the operation state, the main power supply is turned on / off, the main MPU 401 is started / stopped, the command is transmitted to the sub-MPUP 402, and the like. The operation signal can be input not only from the remote control receiver 455 but also from the manual operation unit 456. When the manual operation unit 456 is operated by the user, the operation signal is analyzed by the operation signal correspondence system 402b.

  Next, the power supply system will be described. Commercial AC power taken in from the plug 551 is rectified by the AC adapter 552 and input to the power output circuit 500. The power output circuit 500 uses the output of the AC adapter 552 to convert it into various DC voltages. When there is no AC adapter, the power output circuit 500 can rectify the commercial AC power supply to generate various values of DC voltage. Further, the power output circuit 500 can take in power from the battery 553. The power supply output circuit 500 can convert DC voltage from the battery 553 by the DC / DC converter 501 and generate DC voltages of various values.

  The power output circuit 500 can switch the power use state of the television receiver to a commercial power use state and a battery power use state under the control of the power control system 402. This power use state can be switched by the switch (SW) 502 being controlled by the power control system 402. Note that the switch 502 is preferably a multi-contact that includes at least two systems of contacts and that does not turn on / off all of the contacts at the same time. Further, the switch 502 preferably includes a switching element such as a multi-tap, for example, a switching element that can control ON / OFF of a contact in accordance with a change in supplied voltage, and a non-contact switch, for example, an SSR (solid state relay).

  A transmitter / receiver 460 is connected to the control block 400. The transceiver 460 includes a short-range wireless communication device 461. The short-range wireless communication device 461 can communicate with the mobile terminal 800 through the antenna 462. Furthermore, the transceiver 460 includes a network communicator 463. The network communication device 463 is connected to the network 610 and can communicate with the server 611.

  2A and 2B show various operation buttons of the remote controller 700. FIG. By repeatedly operating the power button 711 for turning on / off the power of the television receiver, the power of the television receiver can be repeatedly turned on and off. Even when the power of the television receiver is turned off by the power button 711, the sub-MPU 402 and the remote control receiver 455 described in FIG. 1 are connected to the auxiliary power from the power output circuit 500, for example, ± 5 V (DC), 12V (DC) or 31V (same) is supplied, and an operation signal from the remote controller 700 can be received. The input switching button 712 is a button for switching between an input capturing state from an external device connected to the television receiver 1 and a non-capturing state.

  For example, when the input switching button 712 is repeatedly pressed, the state changes from digital broadcast reception state → signal capture state from HDMI → video input state → D terminal input state → digital broadcast reception state.

  The peak shift button 721 can be used for reducing the power consumption of the power supply source (the power supply plant of the power company). When the peak shift button 721 is operated in the standby state, the television receiver can be switched to a battery usage state, for example.

  When the commercial power source is in use, for example, a plug icon is displayed at the corner of the screen as shown in FIG. 4B. When the battery is in use, the screen is shown in FIG. 4C. The battery icon is displayed in the corner of the battery, and the remaining battery level is also displayed. The form of the icon is not limited to the form shown in the figure, and various other modifications are possible as long as the type of power supply can be identified, and may include characters.

  The power saving button 722 can switch the television receiver to a power saving state (or a power saving mode).

  When the power saving button 722 is operated, for example, the brightness of the screen becomes dark, and the image quality parameter is changed, so that the television receiving apparatus enters a power saving state.

  In other words, when the power saving button is pressed, the brightness of the backlight is reduced to put it in a power saving state, and image quality parameters such as black level, unicolor, and color temperature are adjusted to create an image that is easy to see even when the brightness is low. . When the power saving button 722 is operated again, the screen brightness returns to the standard brightness, and the image quality parameter also returns to the standard.

  When the button 723 of terrestrial digital (abbreviation of terrestrial digital broadcasting) is operated, a full segment reception state is set. When the one-segment button 724 is operated, a one-segment reception state is set. The indoor antenna 105 described with reference to FIG. 1 is used according to the full segment reception state and the one segment reception state.

  The usage state of the UHF antenna 101 and the indoor antenna 105 may be automatically switched in the switch circuit of the antenna connection board 108. The button 1-12 is a channel selection button group 730. The button 726 is for adjusting the volume. When the + side is pressed, the volume increases, and when the-side is pressed, the volume decreases. The button 727 is for channel switching. When the upper side (on the drawing) of the button is pressed, the reception channel changes in a direction in which the channel number increases, and when the lower side (on the drawing) of the button is pressed, the channel number decreases. The receiving channel changes.

  The button 731 is used for temporarily displaying detailed information such as a broadcasting station name, a program name, a channel number, a one segment or a full segment, and an audio type (monaural or stereo) of the currently received channel. . The button 732 is used to stop the sound output (so-called mute). The button 733 is used to display a quick menu (so-called simple menu). When the quick menu button 733 is pressed, video setting items, audio setting items, energy saving setting items, reception function setting items, and the like are displayed. When the user selects a desired item by moving the cursor and presses the enter button 741, detailed items set in the selected item are displayed.

  The buttons 74L, 74R, 74U, and 74D are buttons that can move the cursor. When each button is operated, the cursor can be moved left, right, up, and down on the screen. A button 741 is a button operated when making a decision.

  The button 745 is an operation button for displaying a video menu, and the button 746 is an operation button for displaying a program guide. The button 747 is an operation button for returning to the previous operation state in the operation progress. The button 747 is an operation button for ending the current mode.

  FIG. 3 shows an example of a change in the operation state when the reception form of the television receiver described above is switched to the full segment reception state or the one segment reception state. Now, assume that the reception mode is switched to one-segment reception in the external antenna connection state (step SA-SA3). As a trigger signal for this switching, for example, there is a signal by a remote control operation by a user, a manual operation, or an automatic operation in accordance with a set condition (timer, power saving information, etc.).

  When the reception mode is switched to one-segment reception, the state of the commercial AC power supply is checked (step SA4). If commercial AC power is supplied, the process ends with the one-segment state being maintained. If it is determined in step SA4 that commercial AC power is not supplied, the battery usage state is changed (step SA7). Then, the antenna used is also in the use state of the internal antenna (step SA8).

  Returning to step SA3, when full segment reception is selected, a full segment reception state is entered. In the full segment reception state, the state of the commercial AC power supply is frequently checked (step SA5). When commercial AC power is supplied to the television receiver, full segment reception is maintained. However, when the commercial AC power is turned off, it automatically switches to the one-segment reception state (step SA6). And it changes to a battery use state (step SA7). In addition, the antenna used is also in the use state of the internal antenna (step SA8).

  With the above configuration, the user can switch between the full segment reception state and the one segment reception state. Therefore, even when the AC power is used, the user can switch to the one-segment reception state and save power when saving power.

  In addition, in either the full segment reception state or the one segment reception state, when the commercial AC power is not supplied, the television receiver automatically switches to the one segment reception state and shifts to the battery use state. For this reason, even if a power failure occurs for some reason, the television receiver can continue to operate, and the viewer (user) can obtain viewing information.

  Regarding the charging of the battery 553, for example, the battery 553 may be set to be charged in a time zone where there is a margin in power demand such as midnight. For example, the television receiver can display a menu related to charging. In this menu display item, an item for setting the power reception time is prepared. When the user operates the remote controller to select a desired time zone and operates the enter button, the battery 553 is charged in the desired time zone on the condition that no power failure occurs.

  However, the television receiver has a specification that charging is not performed during program viewing. That is, the power output circuit 500 has a function of charging the battery 553 with power from a commercial AC power supply, but prohibits the charging operation when the television receiver is in the program display operation state.

  When the user presses the “peak shift” button (peak shift button 721), the television receiver is driven by the battery 553. As a time zone in which the use of the battery 553 should be recommended, for example, there is a peak time of power use such as summer afternoon. When the battery 553 is used in this way, it can contribute to avoiding the peak of social power consumption.

  Also, the power supply of the antenna booster 102 may stop during a power outage and the broadcast may not be seen, but one-segment reception is possible even during a power outage by using the attached antenna or a pre-connected indoor antenna. . For example, this television receiver can be driven by a battery for about 3 hours.

  Various measures can be taken as a power failure detection method.

  The power supply control system 402a has, for example, a backup power supply so that it can operate for a predetermined time even if a power failure occurs. Therefore, a power failure (non-energization of the commercial power supply) can be detected by detecting voltage fluctuations in the power supply line, detecting the output of the AC adapter 552, and the like.

  When a power failure (non-energization of commercial power supply or output reduction of the AC adapter) is detected, the power supply control system 402a switches the changeover switch (SW) 502 of the power supply output circuit 500 to the battery 553 side. That is, the television receiver is operated by the output of the battery 553 set to a predetermined voltage and current (maximum supplyable value) provided by the DC / DC converter 501.

  Note that switching the power supply source to the television receiver to the battery 553 is executed even when the above-described peak shift button 721 is turned on. In this case, since the commercial power supply is not de-energized or the output of the AC adapter 552 is not reduced, the changeover switch (SW) 502 of the power supply output circuit 500 does not completely cut off the input from the AC adapter 552. That is, for example, about 1 W of power is supplied from the AC adapter 552 even after the power supply source is switched to the battery 553 by turning on the above-described peak shift button 721.

  Thus, for example, even if the power supply capability (dischargeable level) of the battery 553 is reduced and the television receiver cannot continue to operate, AC (commercial) power is supplied at that time. In other words, the power output circuit 500 can operate the television receiver with the power supplied from the AC adapter 552. That is, when the switch 502 includes the above-described switching element, or a plurality of power supply systems including at least one non-interruptible line that can connect at least about 1 W of power from the AC adapter 552 (commercial power supply). ), The power supply from the battery 553 and the power supply from the AC adapter 552 can be used in combination.

  Therefore, when the charge amount (remaining amount) of the battery 553 is reduced to the non-discharge level, etc., when the AC (commercial) power supply is supplied at that time, the power supplied from the AC adapter 552 (from the commercial power supply) The television receiver can be operated by the output converted into direct current). This means that when the total amount of power used is close to the supply capacity of commercial power (commercial AC power), that is, when there is a situation in which the amount of power used by the commercial power should be suppressed, etc. It is possible to realize that a television receiving apparatus that can be viewed by supplying power from the power supply significantly reduces power consumption from a commercial power supply.

  Also, in the case of a television receiver that operates with power from the battery, when the power supply capacity of the battery reaches the lower limit, if commercial power is supplied at that time, the commercial power supplied by the AC adapter 552 is converted. The television receiver can be operated by the direct current output.

  Therefore, regardless of whether the power supply source is a commercial power source or a self-power source such as a battery, the user can continue to receive television broadcasting, that is, program reception and viewing by the television receiver. In switching the power supply source, particularly switching from the own power source to the commercial power source, it is possible to accept an operation instruction from the remote controller by supplying the above-mentioned power of about 1 W from the AC adapter 552 (commercial power source). Therefore, it is possible to switch from the own power source to the commercial power source only by the operation for viewing the television broadcast from the remote controller.

  Note that the power supply output circuit 500 can include a power supply circuit (inverter / switching circuit) that converts commercial power into DC output instead of the AC adapter 552. In this case, the television receiver receives power from the battery 553. During the operation, the switching frequency of the switching circuit may be set so that the power passing through the switch (SW) 501 is approximately 1 W.

  When the above-described peak shift button 721 is turned on, according to the charge amount (remaining amount) of the battery 553 and the charge amount (remaining amount) of the battery 208 of the HDD 207 connected by the USB 206, according to FIG. As will be described later, the battery 208 and the battery 553 are charged and discharged (power supply to the television device) giving priority to the reception of the television broadcast by the television receiver.

  The above-described battery switching is performed by, for example, the power output circuit 500 (particularly the changeover switch (SW) 502) and the USB 206 connected to the signal processing unit 200 according to the control of the power control system 402a of the sub MPU 402 of the control block 400. realizable.

  FIG. 4A shows an example of a guidance screen when the commercial AC power supply usage state is switched to the battery usage state. When the battery is switched to the use state, the power supply to the booster of the external antenna is stopped in the event of a power failure, and there is a possibility that images cannot be viewed. In this case, a guidance comment 311 such as “This unit is currently in battery use status. Moves to 1Seg reception status. Please use the internal antenna” is displayed on the screen. be able to. The internal antenna may be referred to as an attached antenna or a one-segment antenna.

  FIG. 4B shows an example of an icon 312 displayed on the screen of the television receiver when using a commercial AC power source. FIG. 4C shows an example of an icon 313 displayed on the screen of the television receiver when the battery is used. When the battery is in use, the battery mark icon also displays the remaining battery level (the number of diagonal lines corresponds to the remaining battery level).

  FIG. 5 shows the relationship between time T1 when the full segment reception state is switched to the one segment reception state and time T2 when the screen is actually switched. It takes some time to switch from the full segment reception state to the one segment reception state and display the one segment image on the screen. Therefore, on the screen, the full-segment image that has been displayed so far is continued until the preparation for outputting the one-segment image is completed, and the image is switched when the preparation for outputting the one-segment image is completed. Is set to In addition, during the preparation for outputting the one-segment image, a comment indicating that the image output is being prepared can be displayed on the screen.

  The peak shift button 721 can be used for reducing the power consumption of the power supply source (the power supply plant of the power company). When the peak shift button 721 is operated, the television receiver can be switched from, for example, a commercial power supply usage state to a built-in battery usage state. Further, in the battery usage state, the state shifts to the one-segment reception state.

  FIGS. 6A to 6E show examples of images after transition to the one-segment reception state. After shifting to the one-segment reception state, the television receiver can display the image 320 on a full screen. Even in this state, since the battery is in use, the power supply company is cooperated in reducing power consumption (FIG. 6A). Furthermore, in order to reduce battery power consumption (battery power saving), the display area can be set to an area smaller than the full screen, for example, the central area (FIG. 6B).

  Here, if the same region is always used, the difference in use time between the display pixels in the region of the image 320 with high luminance and the display pixels in the portion with low luminance around the image 320 or the image 320 with high brightness. A difference in the usage time of the backlight element in the region of the above and the backlight element in the low brightness area around the image 320 occurs. As a result, a noticeable line may occur at the boundary between the area that is always used for image display and the area that is not used. Therefore, the television receiving apparatus can move the display position of the image 320 as shown in FIGS. 6B, 6C, and 6D, for example. Various embodiments are possible, such as the time when the display position of the image 320 is moved, for example, when a commercial starts, when a certain time has passed, and when these are combined.

  Furthermore, for the purpose of saving power, the area (size) of the image 320 area to be displayed can be set (FIG. 6E).

  FIGS. 7A and 7B show a configuration example of a backlight unit of the display 300 that can change the display area. The display device 300 includes a light guide plate 331, a horizontal light source 332 is disposed to face the vertical thickness surface of the light guide plate 331, and a vertical light source 333 is disposed to face the horizontal thickness surface. ing. Light emitted from each of the light sources 332 and 333 is reflected in the light guide plate 331 and output toward the front surface of the light guide plate 331, and functions as a backlight. As a light source element, for example, a plurality of light emitting elements (LEDs) are used. Light emitted from the light sources 332 and 333 is diffused in the light guide plate 331 so as to be output as uniform light toward the front surface.

  The horizontal light source 332 and the vertical light source 333 have, for example, their eight emission sources H1-H8 and V1-V8, and the respective emission sources can be controlled on and off. Therefore, for example, when the emission sources H1 and H8 and V1 and V8 are turned off, the area around the light guide plate 331 can be darkened. Although the boundary between the dark area and the bright area is not clear, it is possible to control the backlight area.

  Therefore, when displaying the image 320 in the region as described with reference to FIGS. 6B to 6E, the signal processor outputs a signal around the image 320 as an image having a luminance level of zero. As described above, when the image 320 in the region as described with reference to FIGS. 6B to 6E is displayed, the backlight lighting region can be controlled to further save power.

  FIG. 8A and FIG. 8B show another configuration example of the backlight unit of the display 300 that can change the display area. In this display 300, a substrate 342 in which light emitting elements (LEDs) are two-dimensionally arranged is disposed on the back side of a glass substrate 341. Each light emitting element can be controlled to be turned on / off in an arbitrary number of units. Therefore, the region of the light emitting element to be lit can be selectively varied by a backlight drive circuit (not shown). A light diffusion layer is formed on the back side of the glass substrate 341, and is devised so that the light emitted to the outside is uniform. Accordingly, the glass substrate 341 viewed from the entire surface by the light of the backlight does not necessarily clarify the boundary between the dark region and the bright region, but the backlight region can be controlled.

  Therefore, when displaying the image 320 in the region as described with reference to FIGS. 6B to 6E, the signal processor outputs a signal around the image 320 as an image having a luminance level of zero. As described above, when the image 320 in the region as described with reference to FIGS. 6B to 6E is displayed, the backlight lighting region can be controlled to further save power.

  Note that the backlight system of the display device 300 is not limited to the above-described configuration, and may be one using a plurality of fluorescent tubes, for example. Further, the number of divisions of the display area is not limited to the above description. Various design changes can be made to the number of divisions of the display area by the same method as described above.

  In the above description, it has been described that the illumination area of the backlight can be controlled. However, in order to save power, the magnitude of illuminance by the backlight may be controlled. That is, by reducing the overall brightness, power consumption can be reduced and power can be saved. Moreover, you may enable it to change illumination intensity in steps. Furthermore, it goes without saying that illuminance magnitude control and illumination area variable control may be combined.

  As a display of a television receiver, a large display having a large screen size has been developed. As the light source of these displays, a fluorescent tube or a light emitting element (for example, LED, organic EL diode, plasma display, etc.) is used.

  In a television receiver having such a large display, saving the power consumption of the display is an effective measure from the viewpoint of power saving in the entire society. In addition, a power saving effect can be obtained even if the television receiving apparatus simply switches to the one-segment reception state.

  This television receiver can operate as described above. The television receiving apparatus can obtain various combinations of the above-described operations according to the application provided with the control block 400.

  In the one-segment reception state, the control block 400 can set the display to which the output video signal of the signal processor 200 is supplied to an image display state in the full screen area. In another aspect, in the one-segment reception state, the control block 400 puts the display to which the output video signal of the signal processor 200 is supplied into an image display state in a partial area of the screen, and one backlight. The partial area can be turned off. In yet another aspect, in the one-segment reception state, the control block 400 changes the display to which the output video signal of the signal processor 200 is supplied from the image display state in the entire screen area, so that the remaining amount of the battery is predetermined. When the value is reduced, the image display state in a partial area of the screen and the partial area of the backlight can be turned off. In another aspect, in the one-segment reception state, the control block 400 sets the display to which the output video signal of the signal processor 200 is supplied to the image display state of the entire screen area, and the screen of the display unit. The image display state of the partial area and the partial area of the backlight can be turned off, and one of the image display states is set in response to the selection signal input based on the operation of the viewer Can do. In addition, a comment that prompts the viewer to operate the viewer can be displayed on the display.

  In yet another aspect, the tuner 110 can receive a broadcast signal from an external antenna and the power output circuit 500 can supply power to the booster 102 of the external antenna 101 when the state transitions to the one-segment reception state. In another aspect, when a transition to the one-segment reception state is made, the tuner 110 can input a broadcast signal from the external antenna 101, and the power output circuit 500 can stop the power supply to the booster 102 of the external antenna. In another aspect, when the state shifts to the one-segment reception state, the input to the tuner switches the broadcast signal from the attached antenna to the input, and the power output circuit 500 stops the power supply to the booster 102 of the external antenna. Can do. At this time, the antenna may be switched automatically, or a comment that prompts the viewer to switch the antenna may be displayed on the display.

  In another embodiment, the size of the display area of the image 320 described with reference to FIGS. 6A to 6E can be changed in accordance with the remaining battery level or the operation of the viewer. Alternatively, the audio output circuit can be turned off by using the video output to save power, or the video output can be stopped by using the audio to save power.

  9A and 9B show an example of a menu for performing various settings of the television receiver and an example of an operator of the remote controller 700. FIG. When the quick menu button 733 of the remote controller 700 is operated, a menu is displayed on the display device 300, and items of “video setting”, “audio setting”, “energy saving setting”, and “receiver setting” are displayed as menu items. is there. Here, the viewer can operate the button 74U or the button 74D, move the cursor, and select a desired item. Now, when the viewer selects the “energy saving setting” item 331 with the cursor and presses the enter button 741, a menu of the next layer is displayed. This menu includes items such as “program information acquisition setting”, “no operation automatic power off”, “on-air no signal off”, “external input no signal off”, and “night charge”. When the cursor is moved to each item, an on / off button for turning the item on or off is displayed.

  For example, when the cursor is moved to “program information acquisition setting”, an on / off button is displayed at the same time. Here, when the viewer operates the button 74U or the button 74D, selects “ON” and presses the OK button 741, a function of acquiring program information of digital broadcasting when the power is off (in a standby state). However, if “OFF” is selected and the OK button 741 is pressed, the program information is set not to be acquired.

  Next, when the cursor is moved to “no operation automatic power off”, an on / off button is displayed at the same time. Here, when the viewer operates the button 74U or the button 74D, selects “ON” and presses the OK button 741, the power is turned off when the television receiver is not operated for about 3 hours, and the standby state. It becomes. When “OFF” is selected, the power remains on even if the no-operation state lasts for about 3 hours.

  Next, when the cursor is moved to “on air no signal off”, an on / off button is displayed at the same time. Here, when the viewer operates the button 74U or the button 74D, selects “ON” and presses the OK button 741, when the broadcast is received, if no signal state continues for about 15 minutes, the power is turned off and the standby state is established. It becomes. When “OFF” is selected, the power supply remains on even if the no-signal state continues.

  Next, when the cursor is moved to “No external input signal off”, an on / off button is displayed at the same time. Here, when the viewer operates the button 74U or the button 74D, selects “ON” and presses the OK button 741, when the external signal is selected and the no-signal state continues for about 15 minutes, the power is turned off and the standby state is established. It becomes. When “OFF” is selected, the power supply remains on even if the no-signal state continues.

  Next, when the cursor is moved to “night charge”, an on / off button is displayed at the same time. Here, when the viewer operates the button 74U or the button 74D, selects “ON” and presses the OK button 741, for example, the battery is automatically charged between 10 o'clock in the evening and 9 o'clock in the morning. (However, when the device is in standby). When “OFF” is selected, the battery is charged when the apparatus is turned off and in a standby state.

  In FIG. 10, when the peak shift button is turned on and the [peak shift] mode is activated, the amount of charge (remaining amount) of the battery (television receiver side) and the charging and discharging of the battery (HDD side) respectively (television) The power supply to the apparatus will be described.

  When the peak shift button is turned on, the [peak shift] mode of the television receiver is activated [01], and the television receiver of the battery 553 built in the television receiver and the battery 208 built in the USB-HDD 207 is installed. Charging via is stopped. That is, the battery charging by the AC power supply component taken in via the AC adapter 552 is stopped [02].

  Hereinafter, the battery that supplies power to the television receiver is designated according to the remaining amount (charge amount) of the battery 553 (television receiver) and the battery 208 (HDD (external device)). Therefore, when the peak shift button is turned on, the remaining amount (charge amount) is obtained for each of the battery 553 (on the television receiving device side) and the battery 208 (on the HDD (external device) side), and which remaining amount is determined. [03].

  When the remaining amount of battery 553 (television receiving device side) is larger than the remaining amount of battery 208 (HDD (external device) side) [03-YES], the remaining amount of HDD side battery becomes the first predetermined value or less. When the remaining amount of the battery on the television receiver side is the second predetermined value (may be the same as the first predetermined value or “second predetermined value> first predetermined value”), the television The HDD-side battery is charged with the television receiver-side battery until the remaining battery capacity of the built-in battery in the receiver becomes the second predetermined value or less (power is supplied from the television receiver-side battery to the HDD-side battery. [04] Note that the first predetermined value is a remaining amount that enables the television receiver to operate for at least about three hours.

  On the other hand, when the remaining amount of the battery 553 (television receiving device side) is smaller than the remaining amount of the battery 208 (HDD (external device) side) [03-NO], the remaining amount of the HDD side battery is the first. The remaining amount of the battery on the television receiver side may be the second predetermined value (may be the same as the first predetermined value, or “second predetermined value <first predetermined value (USB-HDD battery If there is room, the power is supplied from the HDD battery to the television receiver until the remaining amount of battery on the HDD side runs out [05]. Note that the first predetermined value of the battery on the HDD side described above is a remaining amount that enables the television receiver to operate for at least about 3 hours, even if it may give a certain limit to the operation of the HDD.

  That is, when each of the television receiver and the external device (USB-connected USB-HDD) has a battery, both AC batteries (external power) are charged and both batteries are charged and the AC power is used. When the “peak shift” mode is activated, if the remaining amount (charge amount) of the battery on the television receiver side is larger than the remaining amount (charge amount) on the USB-HDD side battery, the television receiver device If the battery on the USB-HDD side is continuously charged by the side battery and the remaining amount (charged amount) of the battery on the television receiver side is less than the remaining amount (charged amount) of the HDD side battery, the power of the HDD side battery Is supplied to the television receiver before the power of the battery of the television receiver. To operate. Thereby, even if the operation of the HDD is subject to certain restrictions, the television receiver can be operated for at least about 3 hours.

  The charging capacity of the battery in each of the television receiving device and the external device (USB-connected USB-HDD) is “television receiving device side> external device (HDD) side”.

  In this manner, by applying the above-described embodiment, when each of the television receiver and the external device (USB-HDD connected via USB) has a battery, the power (discharge) that the battery holds for a certain period of time. Capability), the operation of the television receiver, that is, the reception and viewing of continuous television broadcasts can be maintained. As for power transfer between the television receiver and the external device (USB-HDD), the user can use an independent power line or provide a dedicated line for power supply in the USB connector (package). A situation that affects the operation of the television receiver, such as a lack of battery charging on the USB-HDD side due to a connection error or the like, resulting in a shortage of power (charge amount) necessary for the operation of the television receiver. Can also be reduced.

  FIG. 12 shows an example of a power saving mode and / or peak shift operation setting screen used in the present embodiment.

  The television receiver of this embodiment can shift to a power saving operation and / or a peak shift operation. In this case, in an embodiment, a power saving operation and / or a peak shift operation method can be selected. In this embodiment, for example, when setting for executing the power saving operation and / or the peak shift operation from the menu, a menu for selecting the operation method can be displayed.

  As an operation method, for example, it is determined whether to execute the power saving operation and / or the peak shift operation by adjusting the luminance, or to change the screen size from large to small to execute the power saving operation and / or the peak shift operation. Can do. When the user moves the cursor to a desired item on the selection screen and operates the enter button, power saving and / or peak shift is executed by the operation displayed on the selected item. In addition, as a selection item, there may be an item combining brightness adjustment and screen size adjustment.

  FIGS. 13A and 13B show examples of indicators.

  When the television receiver starts operating with a commercial AC power supply or when an operation such as channel switching is performed while operating with a commercial AC power supply, the indicator in FIG. It is possible to indicate on the screen which position is between. In this case, for example, an example is shown in which the luminance is adjusted to an intermediate position between light and dark. The indicator in FIG. 13B shows an example when the television receiver is displayed when the peak shift operation is performed. In this case, for example, an example in which the luminance is adjusted in a dark direction is shown.

  Therefore, the user refers to the display example of the display unit 300 during the power saving mode and / or the peak shift operation, and in the case where each of the television receiver and the external device (USB-HDD connected via USB) has a battery, The battery drive for operating the television receiver, that is, the timing (onset) for turning on the peak shift button can be obtained by the electric power (discharge capability) held by the battery for a certain period.

  In addition, by applying the above-described embodiment, a television receiver that can contribute to power saving measures can be obtained for a power supply source.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Television receiver (video display device), 110 ... Tuner, 200 ... Signal processing part, 211a, 211b ... Power supply line (USB combined use), 1211 ... Power supply line (integrated with USB), 300 ... Display part, 400 ... Control block 401 ... main microprocessing unit (main MPU) 402 ... sub-microprocessing unit (sub-MPU) 402a ... power supply control system 402b ... operation signal corresponding system 500 ... parallax information generation unit 501 DC / DC Converter, 502 ... changeover switch (SW), 552 ... AC adapter, 553 ... battery (self power supply).

Claims (12)

A first power supply unit that is charged while a commercial power supply is connected;
A second power supply unit that is connected as an external device and charged while charging the first power supply unit while a commercial power supply is connected;
A power switching unit that supplies power from at least one of the first and second power sources when an instruction to stop connection with a commercial power source is given;
When the power source switching unit switches to supply power from the second power source, the display area of the display displayed on the display unit is reduced, and the display position is moved when a predetermined period has elapsed. A control unit for switching to a reception mode with low power consumption;
An electronic device comprising:   The power supply switching unit moves power according to the remaining amount between the first power supply unit and the second power supply unit when an instruction to stop connection with a commercial power supply is given. Electronic equipment.   The power supply switching unit compares the remaining amount of the first power supply unit with the remaining amount of the second power supply unit, and if the remaining amount of the first power supply unit is greater than a predetermined value, the remaining amount The electronic device according to claim 2, wherein power is supplied to the second power supply unit until the power reaches a predetermined value.   The power supply switching unit compares the remaining amount of the first power supply unit with the remaining amount of the second power supply unit, so that the remaining amount of the first power supply unit is a predetermined value and the second power supply unit. The electronic device according to claim 2, wherein power is acquired from the second power supply unit when the remaining amount is less than each of the remaining power.   The electronic device according to claim 2, wherein the second power supply unit functions as a power supply for operating the video display device itself. A first power supply unit that is charged while a commercial power supply is connected;
A second power supply unit that is connected as an external device and charged while charging the first power supply unit while a commercial power supply is connected;
A power switching unit that supplies power from at least one of the first and second power sources when an instruction to stop connection with a commercial power source is given;
A power supply line capable of supplying power bidirectionally between the first power supply unit and the second power supply unit;
When the power source switching unit switches to supply power from the second power source, the display area of the display displayed on the display unit is reduced, and the display position is moved when a predetermined period has elapsed. A control unit for switching to a reception mode with low power consumption;
An electronic device comprising:   The electronic device according to claim 6, wherein the power line is provided independently of a USB (Universal Serial Bus) cable.   The electronic apparatus according to claim 6, wherein the power line is provided integrally with a USB (Universal Serial Bus) cable. A first power supply unit that is charged while the commercial power source is connected, and a second power source that is connected as an external device and is charged together with the charging of the first power source unit while the commercial power source is connected And when the display is switched to supply power from the second power source, the size of the display area of the display displayed by the display unit is reduced, and the display position is moved when a predetermined period has elapsed and consumed. A control unit for switching to a low power reception mode;
The control unit moves power according to the remaining amount between the first power source unit and the second power source unit when the stop of the connection with the commercial power source is instructed, and at least the video signal and At least one of a reception unit that receives an audio signal, a reproduction unit that reproduces a video signal and an audio signal received by the reception unit, a display unit that displays an image reproduced by the reproduction unit, and at least a reception unit, a reproduction unit, and a display unit The method of driving an electronic device according to claim 1, wherein the display area displayed on the display unit is reduced in size, and the display position is moved when a predetermined period elapses and is switched to a reception mode with low power consumption.   When the remaining amount of the first power supply unit is greater than a predetermined value by comparing the remaining amount of the first power supply unit and the remaining amount of the second power supply unit, until the remaining amount reaches a predetermined value, The method for driving an electronic device according to claim 9, wherein power is supplied to the second power supply unit.   When the remaining amount of the first power supply unit is compared with the remaining amount of the second power supply unit, and the remaining amount of the first power supply unit is a predetermined value and less than the remaining amount of the second power supply unit, The method for driving an electronic device according to claim 9, wherein power is transferred from the second power supply unit to the first power supply. A receiver for receiving a video signal and an audio signal;
A reproduction unit for reproducing the video signal and the audio signal received by the reception unit;
A display unit for displaying the video reproduced by the reproduction unit;
A control unit for controlling operations of at least the receiving unit, the reproducing unit, and the display unit;
An instruction input unit for receiving a control instruction for the control unit;
A first power supply unit that is charged while a commercial power supply is connected;
A second power supply unit that is connected as an external device and charged while charging the first power supply unit while a commercial power supply is connected;
When an instruction to stop connection with a commercial power supply is given, the power is moved between the first power supply unit and the second power supply unit according to the remaining amount, and the first unit is transferred to each unit. When supplying power from the power source or the second power source and switching to supplying power from the second power source, the size of the display area of the display displayed by the display unit is reduced, and the display position is set to a predetermined value. A controller that moves when the period has elapsed and switches to a reception mode with low power consumption;
A television receiver comprising:

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