JP2009239655A - Video display apparatus, and video display control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video display apparatus and a video display control method capable of further improving convenience of a shop clerk by automatically adjusting brightness of a screen depending on the installation place (e.g., storefront) and efficiently utilizing the output of a brightness detecting section. <P>SOLUTION: The apparatus having a video image processing section for adjusting image quality in response to a control signals has: a brightness detection output deciding section for deciding whether or not a state where a detection output value of the brightness detecting section does not change continues for a predetermined time; and an automatic adjusting section for automatically adjusting the screen so as to be brighter via the control signal when the detection output value does not change for a predetermined time, and adjusting the screen based on the output of the brightness detecting section via the control signal when the detection output value changes within a predetermined period. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a video display device and a video display control method, and particularly exhibits an effective function during over-the-counter sales.

  The video display device has been devised for the salesperson. For example, there is a device having a mode optimized for demonstration. For example, when a specific card medium is loaded, there is a device devised to obtain a demonstration audio or video output when the set timer count has exceeded a predetermined time. Also, a brightness detection sensor is provided, and the timer is reset when the value of the brightness detection sensor becomes a predetermined value or less, so that the display is not shifted to the demonstration display state unnecessarily (Patent Document 1).

In the case of a conventional system, the emphasis is placed on determining whether to perform a demonstration. For this reason, another means must be considered for image quality adjustment (screen brightness adjustment).
JP 2008-42868 A

  The object of the present invention is to automatically adjust the brightness of the screen according to the installation location (for example, the storefront) and to effectively utilize the output of the brightness detection unit to further improve the convenience of the store clerk. An object is to provide a video display device and a display method.

  In order to solve the above problems, the present invention provides a brightness detection unit for detecting ambient brightness in a device having a video processing unit in which image quality adjustment is performed in accordance with a control signal, and detection of the brightness detection unit. A brightness detection output determination unit that determines whether or not the state in which the output value does not change continues for a certain period of time, and a screen that uses the control signal when the detection output value does not change for the certain period of time. It is characterized by having an automatic adjustment unit that automatically adjusts the screen in the direction of brightening, and adjusts the screen according to the detection output value of the brightness detection unit using the control signal when changed.

  According to the above means, the following effects can be obtained when the video display device is installed in a store. That is, the operation by the first automatic adjustment is suitable for storefront brightness even when a price tag is affixed to the brightness detection unit or an obstacle is placed. The brightness can be controlled. Further, the operation by the second automatic adjustment can be determined that the store clerk appeals to the spectator, the purchaser, etc. for the original operation function of the brightness detection unit, and the brightness according to the detection output of the brightness detection unit. It becomes possible to control the screen.

  Embodiments of the present invention will be described below with reference to the drawings. First, an outline of a broadcast receiving apparatus to which the present invention is applied will be described.

  FIG. 1 shows a main signal processing system of the digital television broadcast receiver 41. That is, the satellite digital television broadcast signal received by the BS / CS digital broadcast receiving antenna 43 is supplied to the satellite digital broadcast tuner 45 via the input terminal 44, so that the broadcast signal of the desired channel is obtained. To be selected.

  The broadcast signal selected by the tuner 45 is supplied to a PSK (Phase Shift Keying) demodulator 46, demodulated into a digital video signal and audio signal, and then output to a signal processing unit 47.

  The terrestrial digital television broadcast signal received by the terrestrial digital broadcast receiving antenna 48 is supplied to the terrestrial digital broadcast tuner 50 via the input terminal 49, so that the broadcast signal of the desired channel is selected. Is done.

  The broadcast signal selected by the tuner 50 is supplied to an OFDM (Orthogonal Frequency Division Multiplexing) demodulator 51, demodulated into a digital video signal and an audio signal, and then output to the signal processing unit 47.

  An analog tuner 68 for receiving terrestrial analog signals is also provided. The signal received by the analog tuner 58 is demodulated by the analog demodulator 59 and output to the signal processing unit 47.

  Here, the signal processing unit 47 receives the digital video signal and audio signal supplied from the PSK demodulator 46, the digital video signal and audio signal supplied from the OFDM demodulator 51, and the analog demodulator 69. Predetermined digital signal processing is selectively performed on the video signal and audio signal, and further the video signal and audio signal from the external line input terminal, and the result is output to the graphic processing unit 52 and the audio processing unit 53.

  Among these, the graphic processor 52 has a function of superimposing and outputting the OSD signal generated by the OSD (On Screen Display) signal generator 54 on the digital video signal supplied from the signal processor 47. The graphic processing unit 52 selectively outputs the output video signal of the signal processing unit 47 and the output OSD signal of the OSD signal generation unit 54, and both outputs constitute half of the screen. Can be combined and output.

  The digital video signal output from the graphic processing unit 52 is supplied to the video processing unit 55. The video processing unit 55 converts the input digital video signal into an analog video signal in a format that can be displayed on the video display 57 and outputs the analog video signal to the video display 57 for video display.

  The audio processing unit 53 converts the input digital audio signal into an analog audio signal in a format that can be reproduced by the speaker 56, and outputs the analog audio signal to the speaker 56 for audio reproduction.

  Here, in the digital television broadcast receiving apparatus 11, all operations including the above-described various receiving operations are comprehensively controlled by the control unit 56.

  The control unit 61 includes a CPU (Central Processing Unit) and the like. When receiving the operation information from the operation unit 71 or when receiving the operation information sent from the remote controller 72 via the light receiving unit 73, the control unit 61 reflects the operation content on the apparatus. Each department is controlled and controlled.

  In this case, the control unit 61 mainly includes a ROM (Read Only Memory) 611 that stores a control program executed by the CPU, a RAM (Random Access Memory) 612 that provides a work area for the CPU, and various setting information. And a non-volatile memory 613 in which control information and the like are stored.

  The control unit 61 is connected via a card I / F (Interface) 75 to a card holder 76 in which a memory card 77 can be mounted. Thereby, the control unit 61 can transmit / receive information to / from the memory card 77 mounted on the card holder 76 via the card I / F 75. Although not shown, the control unit 61 may be connected to a card holder in which the second memory card can be attached via another card I / F.

  The control unit 61 is connected to the first LAN terminal 82 via the communication I / F 81. As a result, the control unit 61 can transmit / receive information to / from the LAN-compatible HDD (hard disk drive device) connected to the first LAN terminal 82 via the communication I / F 81. In this case, the control unit 61 has a DHCP (Dynamic Host Configuration Protocol) server function, and performs control by assigning an IP (Internet Protocol) address to a LAN-compatible HDD connected to the first LAN terminal 82. Although not shown, the control unit 61 may be connected to the second LAN terminal via another communication I / F.

  The control unit 61 is connected to the USB terminal 84 via the USB I / F 83. Accordingly, the control unit 61 can transmit / receive information to / from each device connected to the USB terminal 84 via the USB I / F 83.

  The control unit 56 is connected to the i. I. Via Link (registered trademark) I / F85 It is connected to a Link (registered trademark) terminal 86. Thereby, the control part 61 is i. Each device connected to the Link (registered trademark) terminal 86; i. Information can be transmitted and received via the Link (registered trademark) I / F 85.

  The control unit 61 can transmit / receive information to / from each device connected to the HDMI terminal 88 via the HDMI I / F 85 that conforms to the HDMI (High Definition Multimedia Interface) standard. Further, the above-described apparatus is provided with a sensor 90 as a brightness detection unit that detects ambient brightness.

  Here, the control unit 61 includes a brightness detection output determination unit 621, a first automatic adjustment unit 622, and a second automatic adjustment unit 623. Although the first and second automatic adjustment units 621 and 622 are shown, these are integrated automatic adjustment units, which will be described separately so that the distinction of the operation function can be easily understood.

  A detection signal from the sensor 90 is input to the brightness detection output determination unit 621. The brightness detection output determination unit 621 determines whether or not the state in which the detection output value from the sensor 90 does not change continues for a certain period of time. The first automatic adjustment unit 622 automatically adjusts the screen to brighten the screen via the control signal when the detection output value does not change for the predetermined time. The second automatic adjustment unit 623 adjusts the screen according to the detection output value of the brightness detection unit via a control signal when the detection output value changes within the predetermined period. The control signal is given to the video processing circuit 55.

  The operation functions of the brightness detection output determination unit 621 and the first and second automatic adjustment units 622 and 623 are set based on control information from the card 77 as a recording medium. That is, when a specific card 77 for demonstration is loaded, the control information of the card is read, and the brightness detection output determination unit 621 and the first and second automatic adjustment units 622 and 623 are activated. The card information is read and analyzed by the card information processing unit 624. The control unit 61 is provided with an operation switching unit 625. The operation switching unit 625 detects, for example, a case where the user operates the remote controller 72 to perform image quality adjustment, and switches the operation mode of the apparatus to an operation mode corresponding to the operation. The automatic operation mode can be switched according to the measured value of the timer 625.

  FIG. 2 shows the external appearance of the remote controller 72. The remote controller 72 mainly includes a power key 17a, an input switching key 17b, a direct channel selection key 17c for a satellite digital broadcast channel, a direct channel selection key 17d for a terrestrial broadcast channel, a quick key 17e, a cursor key 17f, and an enter key. 17g, program guide key 17h, page switching key 17i, face net (navigation) key 17j, back key 17k, end key 17l, blue, red, green, yellow color key 17m, channel up / down key 17n, volume adjustment key 17o Etc. are provided. When the program guide key 17h is pressed, the program guide is displayed. When the end key 171 is pressed, the state returns to the on-air state (display of the image of the channel currently being received). For example, when the quick key 17e is pressed, the display mode of various menu screens can be shifted.

  FIG. 3 is a flowchart for explaining an operation example of the above-described apparatus. When a specific card 77 is inserted, an image quality adjustment function for the storefront is started. The counter starts (step SA1). Next, it is determined whether or not there is an external adjustment operation (step SA2). If there is no adjustment operation from the outside, it is determined whether or not the output of the sensor 90 has been converted (step SA3). This determination is performed by the brightness detection output determination unit 621. If there is no change in the output of the sensor 90, it is next determined whether or not a certain time (for example, several minutes) has elapsed from the count value of the counter (step SA4). If the predetermined time has not elapsed, the process returns to step SA2.

  When it is determined in step SA4 that the predetermined time has elapsed, the screen is set to the maximum brightness for the store. At this time, even if a price tag is affixed to the brightness detection unit or some kind of obstacle is placed, the brightness of the screen can be controlled to a brightness suitable for the store. .

  Next, when there is a change in the output of the sensor 90 in step SA3, the process proceeds to step SA6, the counter is reset, and the process proceeds to the normal operation state (step SA7). The normal operation state is an operation for automatically adjusting the brightness of the screen in accordance with the output from the sensor 90. This function is a case where, for example, a store clerk turns on and off the light incident on the sensor 90 for demonstration to a spectator or a purchaser. In this case, it can be determined that the original operation function of the brightness detection unit (sensor 90) is being appealed, and the screen can be controlled to have a brightness according to the detection output of the brightness detection unit (sensor 90). However, when this forced manual operation ends, the mode shifts to a determination mode for determining whether there is a change in sensor output as described above.

  FIG. 4 is a diagram for explaining a transition condition between the state in which the screen brightness is adjusted in the normal operation state and the state in which the screen is set to the forced maximum luminance state in the above-described operation. In the normal operation state, when a few minutes elapses after the operation is completed, the forced maximum brightness state is entered. In the normal operation state, when the sensor output does not change and a few minutes have passed, the forced maximum luminance state is entered. When the adjustment operation is started from the forced maximum brightness state or when the sensor output changes, the state immediately shifts to the normal operation state.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

It is a block diagram which shows one embodiment of this invention. It is a figure which shows the example of a remote controller. It is the flowchart shown in order to demonstrate the operation example of the apparatus of this invention. It is explanatory drawing which shows a mode that the operation mode of the apparatus of this invention changes.

Explanation of symbols

45 ... tuner for satellite digital broadcast, 46 ... PSK demodulator, 47 ... signal processor, 48 ... antenna for receiving terrestrial digital broadcast, 50 ... tuner for digital terrestrial broadcast, 51: OFDM (Orthogonal Frequency Division Multiplexing) demodulator, 52: Graphic processing unit, 53: Audio processing unit, 54: OSD signal generation unit, 55: Video processing unit, 61. Control unit, 613, nonvolatile memory, 621, brightness detection output determination unit, 622, first automatic adjustment unit, 623, second automatic adjustment unit, 624, card Information processing unit, 625... Operation switching unit.

Claims (6)

In an apparatus having a video processing unit in which image quality adjustment is performed according to a control signal,
A brightness detector that detects ambient brightness;
A brightness detection output determination unit that determines whether or not a state in which the detection output value of the brightness detection unit does not change continues for a certain period of time;
When the detection output value does not change continuously for the predetermined time, the control signal is used to automatically adjust the screen to brighten the screen, and when the detection output value changes, the control signal is used to make the screen bright. An image display apparatus comprising an automatic adjustment unit that adjusts according to a detection output value of a detection unit.   The video display apparatus according to claim 1, wherein the automatic adjustment unit is in an operating state when the apparatus is set to a demonstration mode. Having a holder part for mounting the storage medium from the outside,
3. The video display device according to claim 2, wherein when the storage medium for demonstration is stored in the holder, an operation function of the automatic adjustment unit is set based on control information of the storage medium. .   The video display apparatus according to claim 1, wherein the automatic adjustment unit controls to a maximum luminance state when the screen is brightened using the control signal.   The automatic adjustment unit adjusts the screen according to a detection output value of the brightness detection unit using the control signal even when an operation signal from the outside is input. Video display device. In the video display control method in which the video processing unit adjusts the image quality of the video signal according to the control signal from the control unit,
In the control unit, it is determined whether or not the state in which the detection output value of the brightness detection unit that detects ambient brightness does not change continues for a certain period of time,
When the detected output value does not change continuously for a certain time, the control signal is used to automatically adjust the screen to brighten the screen,
When the detected output value changes within the predetermined period, the screen is adjusted according to the detected output value of the brightness detecting unit using the control signal.

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