JP2007293020A - Display device, screen display method, and display system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device, a screen display method, and a display system that can suitably control audio information of music contents etc., according to change in environment. <P>SOLUTION: A music control part is controlled based upon information from a luminance sensor. Namely, a control part of the display device reads a luminance value of a circumference from the luminance sensor (step S21) and then decides whether the read luminance value is large (step S22). When it is decided that the luminance value is large (YES), sound volume "large" is written to a music control part (step S23). When it is decided in the step S22 that the luminance value is not large (No), it is decided whether the read luminance value is ordinary (step S24). When it is decided that the luminance value is ordinary (Yes), sound volume "intermediate" is written to the music control part (step S25). When it is decided in the (step S24) that the luminance value is not ordinary (No), sound volume "small" is written to the music control part (step S26). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a display device, a screen display method, and a display system, and in particular, in a display device in which light emitters such as LEDs (light-emitting diodes) are arranged in a matrix to display characters and figures, music, etc. The present invention relates to an automatic volume control of a display device that outputs.

  Conventionally, LED displays that display characters and figures for visually appealing have been the mainstream, but an electronic display with sound that appeals to hearing has been proposed. FIG. 9 shows a schematic configuration of a conventional electro-optical display with sound. This electro-optical display 30 with sound has a configuration of a normal electro-optical display, a speaker 21 disposed in or near the display body 5, an amplifier 22 for driving the speaker 21, an EPROM or an EEPROM. An electronic sound generator 25 for generating and outputting an arbitrary set of electronic sound signal data d to the amplifier 22 in accordance with a selection signal S2 from a plurality of sets of electronic sound signal data D2 stored in advance in an internal storage device 24 such as a flash ROM; .

  Then, the character / graphic data D1 to be displayed on the storage medium 6 such as the IC card 6a or the floppy disk 6b is stored in time series, and the electronic sound generator 25 is selected in any selected display state. The selection signal S2 that operates to generate and output the electronic sound d is stored as timing data (see, for example, Patent Document 1).

  Furthermore, in recent years, music content distribution systems have been proposed with the progress of IT technology. FIG. 10 is a conceptual diagram of a conventional music content distribution system. In this music content distribution system, a music content distribution company system 100 managed by a music content distribution company that distributes music content, and a charge managed by a charging company such as a mobile carrier or a credit company in the mobile phone 300. A business operator system 102 is connected to the Internet network 103. The music content distribution company system 100 and the billing company system 102 are physically configured by computers.

  As the music content distribution target 104 to which the music content is distributed from the music content distribution company system 100, for example, household electric appliances such as a microwave oven, a refrigerator, an air conditioner, and a television used by the user, a doll, a stuffed toy In addition, there are toys such as a bed-mounted merry-go-round for infants, and books such as picture books and magazines (see, for example, Patent Document 2).

Registered Utility No. 3023658 JP 2005-149141 A

  However, when such a music content distribution system is employed in an LED display and the volume output from the LED display is set, as shown in FIG. 11, the volume [high] (step S1) or the volume [ Medium (Step S3) or Volume [Low] (Step S5) is selected, and the selected volume is set as [High] (Step S2), [Medium] (Step S4), and [Low] (Step S6). It takes time to write in the control unit.

  Therefore, in order to adjust to the optimum volume according to the music content output from the LED display, the volume setting shown in FIG. 11 must be performed again. Further, since the volume output from the LED display is a constant volume written at the time of setting regardless of day or night, the sound from the LED display may not be heard during the day due to the influence of ambient noise. On the other hand, at night, the voice of the LED display may be annoying and annoying to the surroundings.

  Furthermore, since the volume output from the LED display is the constant volume written at the time of setting, the volume of the LED display that is often used outdoors is appropriately adjusted according to environmental changes such as sudden changes in the weather. Could not adjust.

  The present invention has been made in view of the above-described conventional circumstances, and provides a display device, a screen display method, and a display system that can appropriately control audio information such as music content according to changes in the environment. The purpose is that.

  The present invention is a display device including a display unit, a luminance sensor, and a speaker, and controls audio information such as music content to be output to the speaker based on a value read by the luminance sensor. A display device comprising an audio control unit.

  According to such a configuration, since the audio information to be output to the speaker is controlled based on the value read by the luminance sensor such as a change in ambient brightness, the audio is not controlled each time according to the environmental change. Information can be controlled appropriately.

  In the display device of the present invention, the voice control unit includes a volume control unit that performs volume control based on a value read by the luminance sensor.

  According to such a configuration, the volume output from the speaker is adjusted based on the value read by the brightness sensor, such as a change in ambient brightness, so the volume can be controlled without having to control each time according to the change in ambient brightness. Can be controlled appropriately.

  In the display device of the present invention, the voice control unit includes a music selection unit that selects music to be output based on a value read by the luminance sensor.

  According to such a configuration, music to be output is selected based on a value read by a luminance sensor such as a change in ambient brightness, so that the optimum music can be automatically selected according to changes in the environment.

  The display device of the present invention further includes a timer control unit that switches display according to time.

  According to such a configuration, the audio content can be flexibly switched in response to the environmental change by combining the change in ambient brightness and the passage of time.

  In the display device of the present invention, the voice control unit includes a message selection unit that selects a message to be output based on a value read by the luminance sensor.

  According to such a configuration, since the message to be output is selected based on the value read by the luminance sensor such as a change in ambient brightness, it is possible to automatically select the optimum message according to the change in the environment.

  In the display device of the present invention, the sound control unit adjusts the volume based on the time set by the timer control unit.

  According to such a configuration, it is possible to output audio content at a volume that flexibly responds to changes in the environment by combining changes in ambient brightness and the passage of time.

  In addition, the display device of the present invention includes a luminance control unit that controls light emission luminance of the display unit based on information from the luminance sensor.

  According to such a configuration, since the light emission luminance of the display unit is controlled based on a value read by the luminance sensor such as a change in ambient brightness, the display unit can be controlled without being controlled each time according to a change in environment. The emission luminance can be appropriately controlled.

  In the display device of the present invention, the display unit includes a plurality of LEDs (light emitting diodes) arranged in a matrix.

  According to such a configuration, since the display unit includes a plurality of LEDs arranged in a matrix, a display device with high durability against environmental changes can be provided.

  The present invention also provides a screen display method for a display device including a display unit, a luminance sensor, and a speaker, and music content to be output to the speaker based on a value read by the luminance sensor It is the screen display method of the display apparatus including the audio | voice control process which controls the audio | voice information.

  According to such a configuration, since the audio information to be output to the speaker is controlled based on the value read by the luminance sensor such as a change in ambient brightness, the audio is not controlled each time according to the environmental change. Information can be controlled appropriately.

  Moreover, in the screen display method of the display device of the present invention, the sound control step includes a volume adjustment step of adjusting the volume based on a value read by the luminance sensor.

  According to such a configuration, the volume output from the speaker is adjusted based on the value read by the brightness sensor, such as a change in ambient brightness, so the volume can be controlled without having to control each time according to the change in ambient brightness. Can be controlled appropriately.

  In the screen display method of the display device according to the present invention, the voice control step includes a music selection step of selecting music to be output based on a value read by the luminance sensor.

  According to such a configuration, music to be output is selected based on a value read by a luminance sensor such as a change in ambient brightness, so that the optimum music can be automatically selected according to changes in the environment.

  Moreover, in the screen display method of the display device of the present invention, the voice control step further includes a timer control step of switching display according to time.

  According to such a configuration, the audio content can be flexibly switched in response to the environmental change by combining the change in ambient brightness and the passage of time.

  The present invention is also a display system for outputting images and sounds, a luminance sensor for detecting ambient brightness, and a speaker for outputting a volume corresponding to the ambient brightness detected by the brightness sensor; A display device that is connected to a network and transmits display content and audio content that can be output by the display device, and is connected to the network via a mobile phone network, and the display content and audio are transmitted from the server. A display system comprising: a mobile terminal that downloads content and transmits the downloaded display content and audio content to the display device by infrared wireless communication.

  According to such a configuration, the display device includes a luminance sensor that detects ambient brightness, and a speaker that outputs a volume corresponding to the ambient brightness detected by the brightness sensor, so that the display device is used outdoors. It is possible to appropriately adjust the volume of a display device having a large amount of noise according to environmental changes such as sudden changes in weather.

  As described above, according to the display device, the screen display method, and the display system according to the present invention, the automatic display device that automatically adjusts the volume according to the change in ambient brightness by reading information from the luminance sensor. Volume control can be realized. Further, by setting the timer, it is possible to realize automatic volume adjustment of a display device that automatically adjusts the volume according to changes in time.

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

(Embodiment 1)
FIG. 1 is a block diagram showing a schematic configuration of a display device according to an embodiment of the present invention. In FIG. 1, the display device controls a display unit 51 including a luminance sensor 52 that reads information on ambient brightness and a speaker 53 that outputs music content in the music control unit 56, and information read by the luminance sensor 52. A brightness control unit 55; a music control unit 56 that controls information such as music contents and volume settings based on information from the brightness control unit 55; and a timer control unit 57 that controls settings for switching display according to time. It has the control part 54 provided.

  FIG. 2 is a flowchart showing automatic volume adjustment by the control unit 54 of the display device in Embodiment 1 of the present invention. The control unit 54 of the display device reads the surrounding luminance value from the luminance sensor 52 (step S21). Next, it is determined whether the read luminance value is bright (step S22). If the determined result is bright (Yes), the volume [high] is written in the music control unit 56 (step S23).

  On the other hand, if the result determined in step S22 is not bright (No), it is determined whether the read luminance value is normal (step S24). If the determined result is normal (Yes), the volume [medium] is written in the music control unit 56 (step S25). If the result determined in step S24 is not normal (No), the volume [low] is written in the music control unit 56 (step S26). When the volume is written in the music control unit 56 in steps S23, S25, and S26, this flow ends.

  According to the display device of the present embodiment, since the audio information to be output to the speaker 53 is controlled based on the value read by the luminance sensor 52 such as a change in ambient brightness, each time according to a change in environment. Audio information can be appropriately controlled without control.

(Embodiment 2)
FIG. 3 is a flowchart showing automatic volume adjustment by the control unit 54 of the display device according to Embodiment 2 of the present invention. FIG. 4 shows an example of timer conditions in the timer control unit 57.

  As illustrated in FIG. 3, the control unit 54 of the display device reads a surrounding luminance value from the luminance sensor 52 (step S <b> 29). Next, it is determined whether the read luminance value is bright (step S30). If the determined result is bright (Yes), the timer control unit 57 determines the timer condition (step S31). If the determined result is “timer condition 1” (10:00 to 17:00: see FIG. 4), the volume [high] is written in the music control unit 56 (step S32).

  If the result determined in step S31 is “timer condition 2” (17:00 to 21:00), the volume [medium] is written in the music control unit 56 (step S33). If the determined result is “timer condition 3” (21:00 to 10:00), the volume [low] is written in the music control unit 56 (step S34).

  On the other hand, if the result determined in step S30 is not bright (No), the volume [low] is written in the music control unit 56 (step S34). When the volume is written in the music control unit 56 in steps S32, S33, and S34, this flow ends.

  According to the display device of this embodiment, audio content can be output at a volume that flexibly responds to environmental changes by combining changes in ambient brightness and the passage of time.

(Embodiment 3)
FIG. 5 is a block diagram showing the overall configuration of the display system according to Embodiment 3 of the present invention. FIG. 6 is a block diagram showing a schematic configuration of the display device 60 of the display system.

  The display system according to this embodiment performs infrared communication between the display device 60 that emits and displays characters and illustrations for sales guidance and attracting customers, and the display device 60. A cellular phone 62 that provides data, a server 63 that distributes voice data and display data to be given to the display device 60 to the cellular phone 62, and a database 64 that is connected to the server 63 and stores voice data and display data. Configured.

  The server 63 is connected to the Internet 66, and the mobile phone 62 is connected to the Internet 66 via the mobile phone network 67. When accessed from the mobile phone 62, the server 63 transmits a program that allows the mobile phone 62 to exchange data with the server 63. Then, after giving the program to the mobile phone 62, data is transmitted to and received from the mobile phone 62 using the HTTP (Hyper Text Transfer Protocol) protocol.

  In addition to functioning as a normal mobile phone, the mobile phone 62 has a function of accessing the Internet 66 and a function of a remote controller for the display device 60. When the mobile phone 62 is caused to function as a remote controller, the mobile phone 62 operates according to a program given from the server 63 by accessing the server 63 via the mobile phone network 67 and the Internet 66. Then, when data is transmitted to and received from the server 63, HTTP is used. When the audio data and display data are acquired from the server 63, they are transmitted to the display device 60. The audio data stored in the database 64 includes music data and message data, and the display data includes text data and image data.

  As shown in FIG. 6, the display device 60 detects the brightness around the display device 60 and the LED display unit 71 configured by arranging light emitting elements such as a plurality of light emitting diodes in a matrix on a printed circuit board. Brightness sensor 52, speaker 53 that outputs sound in accordance with audio content, an infrared receiving function for performing communication using infrared light, and a remote control receiving unit 72 for performing communication with mobile phone 62, and a control program The memory unit 73 in which the storage unit 90, the display content storage unit 93, and the audio content storage unit 94 are secured, and the control unit 74 that controls each unit of the apparatus are configured.

  The control program storage unit 90 of the memory unit 73 stores a control program for controlling the basic operation of the display device 60, and the display content storage unit 93 stores display content for display on the LED display unit 71. The audio content storage unit 94 stores audio content such as music or a message output from the speaker.

  The control unit 74 is a so-called microcomputer and operates according to a program stored in the control program storage unit 90 of the memory unit 73. When the remote controller receiving unit 72 receives display content or audio content from the mobile phone 62, the control unit 74 displays the received display content or audio content in the display content storage unit 93 or audio content storage unit of the memory unit 73. 94. Based on the display content, each light emitting element of the LED display unit 71 is driven to turn on and display a display pattern such as characters and illustrations, and the speaker 53 is driven based on the audio content to output music and a message.

  Note that an operation unit may be provided in the display device 60, and by operating this operation unit, light emission display based on display content or audio output based on audio content may be performed. That is, in addition to the remote control operation by the mobile phone 62, the display device 60 alone may be operated.

  Next, the operation of the display system having the above configuration will be described. First, the outline of communication of audio data and display data between the mobile phone 62 and the server 63 will be described with reference to the procedure shown in FIG.

  The mobile phone 62 is provided with a selection key and a clear key. The selection key is used, for example, for selection and determination of each item on a menu screen described below, and the clear key is selected by, for example, the selection key. Used to end processing on a marked item. The determination operation on the selection key is performed by pressing the center portion of the selection key.

  In order to access the server 63 from the mobile phone 62, first, the mobile phone 62 calls the service company that manages the server 63 and issues a connection request to the server 63. When the request is accepted, the server 63 is connected (step S41). Since the program is transmitted from the server 63 after connecting to the server 63, it is received (step S42). Since the menu screen is transmitted following the transmission of the program, it is received (step S43). The cellular phone 62 activates the received program and displays a menu screen on the liquid crystal display unit of the cellular phone 62.

  The user of the mobile phone 62 views the menu screen and operates the selection key to select desired audio data or display data (step S44). The cellular phone 62 requests the server 63 for the audio data or display data selected by the user, and receives the audio data or display data transmitted from the server 63 in response to this request (step S45). In this case, the server 63 transmits the audio data or display data to be transmitted to the mobile phone 62 after converting it into a format that can be used by the display device 60. The mobile phone 62 transmits the received audio data or display data to the display device 60 (step S46).

  In the audio content transmitted from the server 63, the message data created by the user of the mobile phone 62 is converted into a format that can be used by the display device 60, and the music data stored in the database 64 of the server 63 is displayed. Some have been converted to a format that can be used by the device 60. Display contents transmitted from the server 63 include text data created by the user of the mobile phone 62 converted into a format that can be used by the display device 60, and image data stored in the database 64 of the server 63. Some are converted into a format that can be used by the display device 60.

  FIG. 8 is a block diagram showing an internal configuration of display device 60 according to the embodiment of the present invention. A CPU (central processing unit) 89 mounted on the display device 60 is a display device according to a control program stored in a control program storage unit 90 configured by a ROM (read-only memory) or the like. Control the whole. The output data storage unit 91 stores audio schedule data and display schedule data that define the output timing of audio content and display content data, and various data related to the display device 60.

  The character memory 92 stores characters / pictograms (characters) replaced with codes in a dot pattern. The display content storage unit 93 stores a plurality of display contents to be displayed on the LED display unit 71. The audio content storage unit 94 stores a plurality of audio contents output from the speaker 53.

  A character attribute setting unit 95 displays a dot pattern representing characters and pictograms read from the character memory 92 in a standard font or bold font according to the character attribute assigned to the display content, and uses a video random-access memory (VRAM). Set to 83. The VRAM 83 temporarily stores the display content read according to the display schedule as dot information.

  The luminance control unit 55 can change the light emission luminance by changing the duty ratio of an on / off signal for turning on / off the LED. That is, the luminance is adjusted by changing the ratio of the on-time to the cycle of the LED on / off signal. When the emission luminance is 25%, the ratio of the on-time to one cycle of the on / off signal is 25%, and the remaining 75 % Is an off time, and when the light emission luminance is 100%, the whole cycle is turned on. The display drive unit 82 outputs the display content stored in the VRAM 83 to the LED display unit 71 as an LED drive signal according to the duty ratio set by the luminance control unit 55.

  The LED display unit 71 is configured by arranging LEDs in a dot matrix on a printed circuit board. A plurality of characters can be displayed on the LED display unit 71. For example, a full-size character represented by a 16 × 16 dot matrix is 3 characters in the horizontal direction and 2 characters in the vertical direction, for a total of 6 characters. The matrix is composed of 48 × 32 dots so that it can be displayed. The LEDs arranged in the LED display unit 71 are driven to emit light by the display drive unit 82, and display display contents composed of characters, pictograms, images, and the like are displayed on the matrix.

  The luminance sensor 52 is composed of CdS or the like, and is connected to the CPU 89 via a luminance sensor interface (IF) 84 to give information on ambient brightness. The CPU 89 compares the output value received from the luminance sensor 52 with a preset threshold value, determines that the surrounding area is daytime if the output value is higher than the threshold value, and outputs the output data to the voice control unit 56. The daytime volume read from the storage unit 91 is instructed. If the output value is lower than the threshold value, it is determined that the surrounding area is at night, and the sound control unit 56 is instructed for the night volume.

  Further, the CPU 89 compares the output value received from the brightness sensor 52 with a preset threshold value, and determines that the surrounding area is during the day if the output value is higher than the threshold value. The daytime emission luminance read from the output data storage unit 91 is instructed. If the output value is lower than the threshold value, it is determined that the surrounding area is nighttime, and the luminance control unit 55 is instructed to emit light at nighttime.

  The audio control unit 56 drives the speaker 53 so that the audio information stored in the audio content storage unit 94 has a volume based on the ambient brightness detected by the luminance sensor 52. The timer control unit 57 receives a request from the CPU 89 at an arbitrary timing and outputs the current time / year / date / day of the week.

  The remote controller 85 is a data input means using infrared rays, and the creation and change of audio contents and display contents, or the setting of output schedules and various data settings are made via a remote control receiver 72 provided on the display screen of the LED display section 71. Can be operated. The mobile phone 62 functions as a remote controller for the display device 60 by downloading a control program from the server 63, and transmits infrared control data to the remote control receiver 72.

  The PC card 87 is attached / detached via a PC card interface (IF) 88, and the display content and audio content created by an external personal computer or the like, the output schedule, and various data are transferred to the display content storage unit 93 and the audio content storage unit 94, etc. Used as a storage medium for transfer.

  As described above, according to the display system of the present embodiment, the display includes the luminance sensor 52 that detects the ambient brightness and the speaker 53 that outputs the volume according to the ambient brightness detected by the luminance sensor 52. A device 63, a server 63 connected to the Internet 66 and transmitting display content and audio content that can be output by the display device 60, and connected to the Internet 66 via the mobile phone network 67. And a mobile phone 62 that transmits the downloaded display content and audio content to the display device 60 by wireless communication using infrared rays, so that audio information such as music content according to environmental changes such as ambient brightness Can be controlled appropriately.

  INDUSTRIAL APPLICABILITY The present invention can be used as a display device, a screen display method, and a display system that automatically adjust the volume according to ambient brightness.

1 is a block diagram showing a schematic configuration of a display device according to a first embodiment of the present invention. The flowchart which shows the automatic volume control of the control part concerning Embodiment 1 of this invention. A flowchart which shows automatic volume adjustment of the control part concerning Embodiment 2 of the present invention. The figure showing the setting image of the timer condition concerning Embodiment 2 of this invention FIG. 3 is a block diagram showing an overall configuration of a display system according to a third embodiment of the present invention. FIG. 6 is a block diagram showing a schematic configuration of a display device 60 according to a third embodiment of the present invention. A flowchart which shows operation of a display system concerning Embodiment 3 of the present invention. The block diagram which shows the internal structure of the display apparatus 60 in Embodiment 3 of this invention. The figure which shows schematic structure of the conventional light-emitting display with a sound Conceptual diagram of a conventional music content distribution system A flowchart showing volume control of a conventional control unit

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 Display body 6 Storage medium 22 Amplifier 24 Internal storage device 25 Electronic sound generator 30 Sound-powered display 51 Sound display unit 51 Luminance sensor 21, 53 Speaker 54, 74 Control unit 55 Brightness control unit 56 Music control unit 57 Timer control Unit 60 Display device 62 Cellular phone 63 Server 64 Database 66 Internet 67 Cellular phone network 71 LED display unit 72 Remote control receiving unit 73 Memory unit 82 Display drive unit 83 VRAM
84 Brightness sensor interface 85 Remote control 87 PC card 88 PC card interface 89 CPU
90 Control program storage unit 91 Output data storage unit 92 Character memory 93 Display content storage unit 94 Audio content storage unit 95 Character attribute setting unit 100 Music content distribution company system 102 Billing company system 103 Internet network 104 Music content distribution object

Claims (13)

A display device including a display unit, a luminance sensor, and a speaker,
A display device comprising: an audio control unit that controls audio information such as music content to be output to the speaker based on a value read by the luminance sensor. The display device according to claim 1,
The sound control unit is a display device including a volume control unit that performs volume control based on a value read by the luminance sensor. The display device according to claim 1 or 2,
The voice control unit includes a music selection unit that selects music to be output based on a value read by the luminance sensor. The display device according to any one of claims 1 to 3,
Furthermore, the display apparatus provided with the timer control part which switches a display by time. The display device according to any one of claims 1 to 3,
The voice control unit includes a message selection unit that selects a message to be output based on a value read by the luminance sensor. The display device according to claim 4,
The display device in which the sound control unit adjusts the volume based on the time set by the timer control unit. The display device according to any one of claims 1 to 6,
A display device including a luminance control unit that controls light emission luminance of the display unit based on information from the luminance sensor. The display device according to claim 1,
The display unit includes a plurality of LEDs (light emitting diodes) arranged in a matrix. A screen display method of a display device including a display unit, a luminance sensor, and a speaker,
A screen display method for a display device, including an audio control step of controlling audio information such as music content to be output to the speaker based on a value read by the luminance sensor. A screen display method for a display device according to claim 9,
The screen display method for a display device, wherein the voice control step includes a volume adjustment step for adjusting a volume based on a value read by the luminance sensor. A screen display method for a display device according to claim 9 or 10,
The screen control method for a display device, wherein the voice control step includes a music selection step of selecting music to be output based on a value read by the luminance sensor. A screen display method for a display device according to any one of claims 9 to 11,
The voice control step further includes a timer control step of switching display according to time. A display system for outputting images and sounds,
A display device comprising: a luminance sensor that detects ambient brightness; and a speaker that outputs a volume corresponding to the ambient brightness detected by the brightness sensor;
A server connected to a network and transmitting display content and audio content that can be output by the display device;
A mobile terminal connected to the network via a mobile phone network, downloading the display content and audio content from the server, and transmitting the downloaded display content and audio content to the display device by wireless communication using infrared rays; Including display system.

Images