JP4823487B2 - DISPLAY DEVICE, WIRELESS COMMUNICATION SYSTEM, DISPLAY DEVICE CONTROL METHOD, DISPLAY DEVICE CONTROL PROGRAM, AND RECORDING MEDIUM CONTAINING THE PROGRAM - Google Patents

Description

  A display device having a function of receiving data wirelessly transmitted from one or a plurality of transmission devices, a wireless communication system including the transmission device and the display device, a control method and a control program thereof, and the program recorded The present invention relates to a computer-readable recording medium.

  In recent years, with the development of communication network technology and the explosive spread of the Internet, cases of constructing LAN (Local Area Network) in offices and homes are increasing. In addition, the advancement of digital wireless communication technology has helped, and the need for a so-called wireless LAN for constructing a wireless LAN has increased greatly due to the troublesomeness of cable wiring. The wireless LAN can use a mobile terminal typified by a notebook personal computer in a mobile environment. Therefore, a considerable number of wireless LANs is expected in the future.

  As a typical technique of this wireless LAN, IEEE 802.11 that has already been standardized by the Institute of Electrical and Electronics Engineers (IEEE) can be cited. This standardized technology defines from the physical layer to the MAC (Media Access Control) layer, which is the lower layer of the data link, in the OSI (Open Systems Interconnection) model. It can be replaced with Ethernet (registered trademark), and it can be provided with a roaming function as an additional function because it is wireless.

  Conventionally, a plurality of AV (Audio Visual) devices are radially connected to a television (hereinafter referred to as “TV”) receiver capable of graphic display using a GUI (Graphical User Interface), and a remote controller (hereinafter referred to as “TV”). , Abbreviated as “remote control”), information on each AV device is displayed on the display screen of the TV receiver as an icon or the like, and each AV device is selected on the TV receiver by selecting and operating this icon or the like. There is an AV control system that can be operated intensively. Hereinafter, a video tape recorder (hereinafter referred to as “VTR”) will be described as an example of AV equipment.

  In such an AV control system, when a certain VTR is to be operated, an operation for selecting a VTR to be operated from a plurality of VTRs, and for example, recording, playback, stop, Two selection operations such as an operation for selecting a desired execution function from a plurality of execution functions such as rewinding are necessary.

  The TV receiver stores graphic display data regarding each VTR in a memory in a table format. When this TV receiver receives an operation request for a desired VTR from a remote controller operated by the user, the TV receiver opens an operation window at a position corresponding to the VTR on the display screen in a one-to-one correspondence. A plurality of function buttons indicating various functions are displayed. When the displayed function button is selected by the cursor by the user, the TV receiver instructs the VTR to execute the selected function.

  The operation window is displayed overlapping with the normal video. If it is desired to display a plurality of operation windows, the above process is repeated for the number of operation windows.

  FIG. 10 is a block diagram showing an example of the AV control system. As shown in the figure, the AV control system 200 has a configuration in which four VTRs 202 to 205 are connected to one TV receiver 201 radially. In the AV control system 200, for example, when the user causes the VTR (A) 202 to perform a reproduction operation, the following operation is performed using the GUI.

  (1) First, the control unit of the TV receiver 201 checks whether or not a plurality of control cables 206 to 209 connected to the TV receiver 201 are connected to the VTRs 202 to 205, respectively. The models are checked for .about.205 and registered in the model table.

  (2) Next, when the user designates menu display on the TV receiver 201 by using the remote controller 210, the VTR (A) 202 to VTR (D) 205 correspond to four places on a display screen such as a CRT. Four icons are displayed and a cursor is displayed.

  (3) Next, when the user designates an icon corresponding to the VTR (A) 202 with the cursor using the remote controller 210, an operation window corresponding to the VTR (A) 202 is displayed at the position of this icon. In the operation window, a recording button, a playback button, a stop button, a rewind button, and the like are displayed.

  (4) At this time, for example, when a playback button in the operation window of the VTR (A) 202 is pressed, a command for starting a playback operation is sent from the TV receiver to the VTR (A) 202. A command is issued instructing to switch the video input of the machine to the video input from VTR (A) 202. As a result, the playback operation of the VTR (A) 202 is started, the output of the VTR (A) 202 is input to the TV receiver, and the playback image of the VTR (A) 202 is displayed on the display screen. .

In the above conventional example, graphic display data is included in the TV receiver. On the other hand, as described in Patent Document 1, each AV device holds the graphic display data in a distributed manner, so that the TV receiver displays only the response to the request as a graphic and displays a new AV device. There is something that can be supported. Also, as described in Patent Document 2, there is one that can display error data on the AV device side when a failure occurs in the AV device. Patent Document 3 discloses an apparatus that facilitates the operation of a device by displaying the configuration display of the network system together with the function of each device.
Japanese Patent Laid-Open No. 9-149325 (FIG. 1) (publication date: June 6, 1997) Japanese Patent Laid-Open No. 7-336778 (FIG. 1) (Publication date: December 22, 1995) JP 2001-337763 A (FIG. 1) (Publication date: December 7, 2001)

  However, such a conventional AV control system has a problem that it is difficult to know whether it is operating a nearby AV device or a remote AV device connected to the network. . In particular, when there are AV devices in a remote room or when there are many AV devices, it is difficult to find a desired device on the display on the operation panel.

The present invention has been made in view of the above-described problems, and an object of the present invention is to make it possible to easily know a rough positional relationship between rooms in which AV equipment and the like are connected so as to be capable of wireless communication. It is to provide an apparatus, a wireless communication system, and the like.

In order to solve the above problems, a display device according to the present invention receives receiving means for receiving data wirelessly transmitted from a plurality of transmitting devices, display means for displaying and outputting information, and information on a room where the transmitting device is located. Storage means, and control means for controlling the operation of the device itself. The control means includes a reception state detection means for detecting a reception state of the reception means, and the reception for each of the rooms. Display control means for controlling display of the display means so as to display an image showing the room based on a reception state of a transmission device located in the room among reception states detected by the state detection means. It is a feature.

Here, the reception state can be detected based on at least one of the electric field intensity of the received radio wave and the error rate of the received data.

According to the above configuration, the reception state detection unit detects the reception state of the reception unit, and displays an image showing each room based on the reception state of the transmission device located in each room among the detected reception states. The display means is controlled to display. The reception state depends on the obstacle between the transmission device and the display device, but basically depends on the distance between the transmission device and the display device. Therefore, by displaying the image of each room based on the reception state, the user can easily grasp the rough perspective from the display device to each room.

In order to solve the above problems , a display device according to the present invention is configured to communicate with each of a plurality of communication devices, wirelessly communicate data, display means for displaying information, and information on a room where the communication device is located. A display device comprising a storage means for storing the information and a control means for controlling the operation of the device itself, wherein the control means obtains a communication state of the wireless communication with each of the plurality of communication devices. The display unit displays an image indicating the room based on a communication state of a communication device located in the room among the communication state acquired by the communication state acquisition unit with respect to each of the acquisition unit and the room. And a display control means for controlling the display .

The display device according to the present invention further includes a communication state detection unit that detects a communication state of the communication unit, and the communication state acquisition unit communicates the wireless communication with each of the plurality of communication devices. The state may be acquired via the communication state detection unit. Here, the communication state can be detected based on at least one of the electric field strength of the received radio wave, the error rate of the received data , and the number of data retransmission requests based on the error rate.

Further, in the display device according to the present invention, the communication state acquisition means, for each of the plurality of communication devices, determines the communication state of the wireless communication with the display device detected by the communication device from the communication device. You may acquire via a communication means.

According to said structure, a communication status acquisition means acquires the communication status with each communication apparatus, and displays the image which shows each room based on the communication status of the communication apparatus located in each room among the acquired communication status The display means is controlled to display. The communication state depends on the obstacle between the communication device and the display device, but basically depends on the distance between the communication device and the display device. Therefore, by displaying the image of each room based on the communication state, the user can easily grasp the rough perspective from the display device to each room.

The display control means preferably determines the distance from the own apparatus based on the communication state acquired by the communication state acquisition means, and displays the image based on the determined distance. In this case, since the image of each room is displayed based on perspective, the user can more easily grasp the rough perspective from the display device to each room.

Here, in order to display an image based on perspective, for example, based on perspective, it is conceivable to display a large image of a room located near and display a small image of a room located far away. Alternatively, it is conceivable to express the depth by 3D display.

Further, the communication state acquiring means preferably acquires the communication state of the communication link has been established the communication device. In this case, since the user can grasp the reception state with the communication device with which the user wants to communicate, the display device can be moved so that the reception state is improved.

Moreover, it is desirable that the display control means display-controls the display means so as to display the image in a form corresponding to the communication state acquired by the communication state acquisition means .

Here, examples of the form include the shape, size, and color of the image. In addition, as a form according to the communication state, for example, when the communication state is good, it is considered to sharpen the contour of the image, increase the size of the image, or darken the color of the image. It is done. On the other hand, when the communication state is poor, it is conceivable to blur the outline of the image, reduce the size, or lighten the color. Therefore, according to said structure, a user can grasp | ascertain roughly the perspective from the display apparatus to each room.

The wireless communication system in which the display device configured as described above and a plurality of communication devices are connected so as to be able to perform wireless communication has the same effects as described above.

In order to solve the above-described problem, a display device control method according to the present invention includes a receiving unit that receives data wirelessly transmitted from a plurality of transmitting devices, a display unit that displays and outputs information, and the transmitting device. A display device control method comprising a storage means for storing room information, wherein the reception state detection step for detecting the reception state of the reception means, and the reception state detected in the reception state detection step, A display control step of controlling display of the display means so as to display an image indicating the room based on a reception state of a transmission device located in each of the rooms.

According to the above method, the reception state of the reception unit is detected, and the image of each room is displayed based on the reception state of the transmission device located in each room among the detected reception states. The reception state depends on the obstacle between the transmission device and the display device, but basically depends on the distance between the transmission device and the display device. Therefore, by displaying the image of each room based on the reception state, the user can easily grasp the rough perspective from the display device to each room.

In order to solve the above-described problem, a display device control method according to the present invention includes a communication unit that wirelessly communicates data with each of a plurality of communication devices, a display unit that displays and outputs information, and the communication device. A display device control method comprising storage means for storing room information, the communication state acquisition step for acquiring the communication state of the wireless communication with each of the plurality of communication devices, and the communication state acquisition step A display control step of controlling display of the display unit so as to display an image indicating the room based on a communication state of a communication device located in each of the rooms among the communication states acquired in the above-described manner. It is a feature.

According to said method, the communication state with each communication apparatus is acquired, and the image of each room is displayed based on the communication state of the communication apparatus located in each room among the acquired communication states. The communication state depends on the obstacle between the communication device and the display device, but basically depends on the distance between the communication device and the display device. Therefore, by displaying the image of each room based on the communication state, the user can easily grasp the rough perspective from the display device to each room.

Incidentally, the control unit in the display device can be executed on a computer by the display device control program. Furthermore, the display device control program can be executed on any computer by storing the display device control program in a computer-readable recording medium.

ADVANTAGE OF THE INVENTION According to this invention, the room where AV equipment etc. which are connected to the network are located can be known easily, and user convenience can be improved.

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

FIG. 1 is a block diagram showing a configuration of a wireless AV system 1 according to an embodiment of the present invention. In this embodiment, the wireless AV system 1 is applied to a display-separated wireless TV receiver. FIG. 9 is an explanatory diagram showing an outline of the wireless AV system 1 which is a display-separated type wireless TV receiver.

As shown in FIGS. 1 and 9 , a wireless AV system 1 (wireless communication system) includes a wireless center unit (hereinafter referred to as a wireless center) 2 as a base device and a television (TV) as a portable terminal (wireless terminal). ) A main unit (hereinafter referred to as a TV main body) 3, and a wireless center 2 (communication device, center device) and a TV main body 3 (communication device, display device, terminal device) are paired to form a wireless transmission network. Constitute.

As shown in FIG. 9 , the TV main body 3 is wireless with a built-in battery. In addition, a remote control is provided so that a remote control such as a video deck can be operated. The wireless center 2 is connected to an antenna such as a BS or U / VHF, or an AV device such as a DVD player or a video deck. Then, video and / or audio data is wirelessly transmitted from the wireless center 2 to the TV body 3. In addition, commands are wirelessly transmitted bidirectionally between the wireless center 2 and the TV body 3.

  As shown in FIG. 1, the wireless center 2 includes a BS 1 terminal, U / VHF antenna terminal 12 and diversity terminal 13, and a video 1 input terminal (S terminal) for connecting devices such as a digital VTR and a DVD player. 14), video 2 input terminal (decoder input) 15, video 3 input terminal (monitor / BS output combined) 16, and a power supply terminal to which power is supplied from the AC power supply 17 or the Car-DC power supply 18.

  The TV body 3 has a video 4 input terminal (also used as a TV output) 21 for connecting devices such as a digital VTR and a DVD (Digital Versatile Disc) player, and a power input to which power is supplied from an AC power source 22 or a Car-DC power source 23. Terminal.

  The TV main body 3 is a thin display device that is separable from the wireless center 2 and can be carried or carried by a built-in battery. The display device is a wide concept including the display device and is not limited by the display mechanism. In the present specification, the TV main body 3 mainly has a display output function, a sound output function, and the like, while the wireless center 2 mainly stores a control function for controlling the tuner unit and the TV main body 3. The TV main body 3 according to the present embodiment will be described using a liquid crystal television as an example of a thin display device.

  Data (video and / or audio data) is transmitted and received between the wireless center 2 and the TV main body 3 by an SS (Spread Spectrum) wireless system compliant with the IEEE 802.11 standard. Recently, the 5 GHz band is released as a frequency band, and a mode using the 5 GHz band instead of the 2.4 GHz band may be used. Data transmission from the wireless center 2 to the TV main unit 3 uses moving picture expert group (MPEG) 2 video compression format to transmit moving image transmission, DVD-Video, and digital broadcasting over a communication line exceeding 10 Mbps. In addition, transmission of commands (control commands including transmission channel change information) between the wireless center 2 and the TV main body 3 is performed by the SS wireless method.

  When applying to an actual application including MPEG video and MPEG audio encoded streams (bit strings) and other encoded streams, the encoded streams are multiplexed and integrated into a single unit including synchronization. At the same time, it is necessary to make the stream a data format conforming to a specific physical format or protocol possessed by the storage medium or network.

  The MPEG2 system includes a program stream (MPEG2-PS, PS: Program Stream) that constitutes one program, and a transport stream (MPEG2-TS, TS: Transport Stream) that can constitute a plurality of programs, as in MPEG1. There is.

  The MPEG stream is a byte stream that is byte-aligned for each unit such as a header although there are many 1-bit flags. As a structure common to the entire MPEG system, the data portion that is not fixed length is preceded by information indicating the length. If unnecessary, that portion is skipped or the head of the next data group is confirmed and trusted. It has a data structure that enables highly-separated separation processing.

  An apparatus for receiving compressed video and audio signals in conformity with the MPEG2 encoding system is required to prevent video and audio data overflow and underflow on the decoding side. And the video, audio sampling frequency or STC (System Time Clock) on the decoding side must be matched.

  Therefore, the decoding apparatus uses PCR (Program Clock Reference) or SCR (System Clock Reference) defined by the MPEG2 system standard (ISO / IEC standard 13818-1). Thus, the video and audio sampling frequencies on the encoding side are matched with the video and audio sampling frequencies on the decoding side.

  FIG. 2 is a block diagram showing the configuration of the wireless center 2 of the wireless AV system 1.

  In FIG. 2, the wireless center 2 is connected to the BS terminal 11 to receive and select a BS broadcast by the channel selection signal 41, and the U / VHF is connected to the U / VHF antenna terminal 12 by the channel selection signal 41. A U / VHF tuner 32 that receives and selects a broadcast, a video / audio demodulator 33 that demodulates a video / audio (AV) signal received and selected by the BS tuner 31 or the U / VHF tuner 32, and audio switching An audio switching unit 34 for switching between audio received by the signal 42 and information on a program such as an EPG (Electrical Program Guide), video / audio information received by the source selection signal 43, information on the program, video 1 input Terminal (external input 1) 14, video 2 input terminal (decoder input) (external input 2) 15, video 3 input terminal (monitor / BS output) ) (External input 3) The first selector 35 for selecting external input information from 16 and the TV command signal 44 are transmitted and received, and the data selected by the first selector 35 is converted into an MPEG2 video compression format, An SS transmission / reception unit 36 (communication means, communication state detection means, communication state transmission means) for transmitting to the TV main body 3 by the SS wireless system, a channel selection signal 41, an audio switching signal 42, a source selection signal 43 and the like are transmitted. A wireless center microcomputer (hereinafter referred to as a microcomputer) 37 (control means) that transmits and receives a TV command signal 44 to control the entire apparatus, a control program for the wireless center microcomputer 37, communication control data, a transmission channel change program, and the like E which is an electrically rewritable nonvolatile memory for storing various data Configured with a PROM (electrically erasable programmable ROM) 38 (storage means).

  The wireless center 2 may include a plurality of broadcast receiving tuners (two in this case), and at least one of the plurality of BS tuners 31 and the U / VHF tuner may be a tuner capable of receiving terrestrial digital broadcasting.

  The SS transmission / reception unit 36 includes an A / D conversion unit 51 that converts data selected by the first selector 35 into a digital signal, an MPEG2 encoder 52 that converts data into an MPEG2 video compression format, and transmission data according to the SS wireless system. An SS radio transmission / reception engine 53 including an SS radio device and a radio control unit for transmission, and each unit of the SS transmission / reception unit 36 are controlled and a first SS-CPU (Central Processing Unit) 54 for detecting a radio wave state is provided. Is done.

  The SS wireless transmission / reception engine 53 receives a command or the like between the transmission function for transmitting an MPEG2 stream, a command, and the like to the SS transmission / reception unit 61 (described later in FIG. 3) of the TV body 3 and the SS transmission / reception unit 61. With functionality.

  Various specifications in the wireless center 2 and the TV main body 3 can be changed by changing a program written in the EEPROM 38. That is, recently, in order to avoid the time loss of changing the mask ROM for each debugging of the system development, the program ROM has been changed to a non-volatile memory such as EPROM or EEPROM, and the program development / modification time has been greatly shortened. Further, if the program is downloaded and the program contents of the EEPROM are rewritten, it is possible to easily upgrade functions or change functions.

  FIG. 3 is a block diagram showing a configuration of the TV main body 3 of the wireless AV system 1.

  In FIG. 3, the TV main unit 3 transmits / receives a TV command signal 71 to receive an MPEG2 stream and command transmission data transmitted from the SS transmission / reception unit 36 of the wireless center 2 and decodes the received MPEG2 stream and the like into original data. (Restore) SS transmission / reception unit 61 (communication means, communication state detection means, communication state acquisition means), data restored by SS transmission / reception unit 61 and video 4 input terminal (also used as TV output) (external input 4) 21 A second selector 62 that selects an externally input AV signal by a source selection signal 72, a TV section 63 (display means) including an LCD, a speaker, and the like that display a video signal and output an audio signal; Image superimposition of broadcasting and other original images and OSD (on-screen display) display The TV microcomputer 64 (control means) that controls the entire apparatus by transmitting and receiving the TV command signal 71 and the OSD output signal 73 and the source selection signal 72, the OSD output signal 73, etc. An EEPROM 65 (storage means) which is an electrically rewritable nonvolatile memory for storing various data such as a control program for the TV microcomputer 64, communication control data, and a transmission channel change program, and a remote control device (not shown) The remote control light receiving unit 66 that receives a control command from the remote control device), a battery 67, and a battery charger microcomputer 68 that controls charging / discharging of the battery 67 are provided.

  The SS transceiver unit 61 includes an SS radio transceiver engine 81 including an SS radio and a radio controller for receiving data transmitted by the SS radio system, an MPEG2 decoder 82 for decoding the received MPEG2 stream, and an analog signal for the decoded data. The D / A conversion unit 83 that converts the signal and the SS transmission / reception unit 61 are controlled, and the second SS-CPU 84 (communication state detection unit) that detects the radio wave state is provided.

  The SS radio transmission / reception engine 81 has a reception function for receiving an MPEG2 stream, a command, and the like from the SS transmission / reception unit 36 of the wireless center 2, and a transmission function for transmitting a command and the like from the SS transmission / reception unit 61.

  In particular, the second SS-CPU 84 detects the communication state (the strength of the radio wave, the interference of the communication path) between the wireless center 2 and the TV main body 3 by a retransmission request based on the electric field strength, error rate, and error rate of the received radio wave. A function as a radio wave state detection means is provided. Information indicating the detected radio wave state is sent to the TV microcomputer 64 as a TV command signal 71. The detection of the communication state may use any one of the field strength of the received radio wave, the error rate, and the retransmission request based on the error rate, or may use two or more in combination. . The command may be transmitted to the SS transmission / reception unit 36 of the wireless center 2.

  In the present embodiment, the configuration in which the second SS-CPU 84 of the TV main body 3 has the above-described radio wave state detection function is shown. However, the first SS-CPU 54 of the wireless center 2 has the same function and detects the detected radio wave. A mode in which information indicating the state is transmitted from the wireless center 2 to the TV main body 3 may be used. Alternatively, both the first SS-CPU 54 and the second SS-CPU 84 may have a radio wave state detection function. Furthermore, the aspect which the TV microcomputer 64 or the wireless center microcomputer 37 performs the said electromagnetic wave state detection function may be sufficient.

  The TV microcomputer 64 includes a CPU, storage means, and the like, and controls the entire apparatus including execution of AV device control processing. The storage means includes a ROM, a RAM, and an EEPROM, a flash ROM, which are electrically rewritable nonvolatile memories, and stores various data such as a program, communication control data, and a terminal identification code.

  In particular, the TV microcomputer 64 divides AV devices connected to the network into at least a transmission device and a reception device and graphically displays them on the display screen of the TV unit 63, and displays the AV devices according to the distance or communication state. Control to change. That is, the TV microcomputer 64 performs control to display all AV devices connected to the network in a graphic manner so as to show perspective on the screen.

  The TV microcomputer 64 has an OSD generation unit 110 (display control means) inside, and controls display of information such as a program channel, time, and volume on a screen of a television or the like. In an electronic device such as a video device such as a TV or a video conference system, information such as a program channel, time, and volume is generally displayed on a television screen. The OSD data is not an image, but is stored in a format called a bitmap. This bitmap is converted into YUV format pixel values represented by Y, Cb, and Cr, and the converted pixels are used for television broadcasting or the like. Is superimposed on the original image. Further, if an image reproducing device such as a DVD (not shown) is connected to the TV output combined video 4 input terminal (external input 4) 21, OSD display is possible by superimposing the reproduced image on the display screen. Note that the OSD combining unit 69 performs image superimposition processing between an original image such as a television broadcast and the OSD display.

  The AV device connected to the network is OSD-displayed on the display screen of the TV unit 63 so as to be superimposed on the reproduced image. In the present embodiment, the OSD display is used, but any display method may be used as long as it can display a graphic in addition to the video on the display screen. For example, the graphic image is synthesized and displayed by executing the application. But you can.

  Each AV device on the network is divided into a transmission device and a reception device, and the reception device is divided into a video device and an audio device. That is, all AV devices in the network are displayed on the TV unit 63.

  Although not shown, the TV main unit 3 includes a speaker, a key input unit, a slot for inserting / removing a card type external expansion storage medium, and the like. It is good also as a structure which reads directly. The card-type external expansion storage medium is, for example, an SRAM (Static RAM) card that holds information written by power backup or a flash (CF) (registered trademark) including a flash memory that does not require power backup. Smart Media (trademark), Memory Stick (trademark), and the same size as CompactFlash (registered trademark) or a micro hard disk drive (HDD) that can be mounted on a PC card Type II.

  The remote control light receiving unit 66 is an optical communication port unit using IR (Infrared), and receives optical signals from a remote control device that performs various operations on the TV main body 3 or the wireless center 2. Specifically, an I / O port for performing optical communication in accordance with IrDA (Infrared Data Association), ASK (Amplitude Shift Keying), etc., which are standards for transmitting data using infrared rays, or radio waves Is a wireless communication port.

  The battery 67 supplies predetermined power to each part of the TV main body 3. The battery charger microcomputer 68 detects, for example, that the TV main body 3 is attached to the wireless center 2 or other cradle when the battery 67 is in a chargeable state, or the AC power supply 22 or the Car-DC power supply 23 is connected. When it is detected that the battery is connected, charge / discharge control is performed on the charging medium of the battery 67 via a power supply terminal (both not shown). Specifically, the battery charger microcomputer 68 integrates the discharge current of the battery pack and starts charging when it is determined that the remaining capacity of the battery pack has become a predetermined value or less. The charging is stopped when it is determined that the battery pack has been fully charged. The charged battery 67 becomes the main power source of the portable TV when the TV main body 3 is disconnected from the commercial power source, and supplies power to each part of the main body.

  Hereinafter, the operation of the wireless AV system 1 configured as described above will be described.

  FIG. 4 is a diagram showing a network configuration with a plurality of transceivers. As shown in the figure, room A has transmitter A-1 and transmitter A-2 and its receiver, room B has transmitter B-1 and transmitter B-2, and room C has a transmission. There is a machine C-1 and a transmitter C-2. Transmitters A-1, A-2, B-1, B-2, C-1, and C-2 are connected to the wireless center 2 of the wireless AV system 1 described above, and a receiver is a TV main body of the wireless AV system 1. 3 respectively.

  As a technique for realizing a home AV network, for example, there is a standard specification called HAVi (Home Audio / Video Interoperability) Architecture that has been standardized in January 2000. As described in the HAVi V1.0 Specification version overview (1.1 General's 1.1 Scope), this specification connects home appliances and computers and allows a user to use one device to create another device. It is intended to provide an interface for operating.

  In the HAVi specification, as an example, it is assumed that a network is constructed by IEEE 1394 and home appliances conforming to IEC (International Electrotechnical Commission) 61883. In addition, as described in the same outline part of the specification, all users can freely use devices connected to the network realized by HAVi. In this way, by connecting AV devices in the home based on HAVi and constructing an AV network, the user can use AV devices in remote rooms in any combination.

  As the wireless AV system 1, a wireless LAN, Bluetooth (trademark), UWB (Ultra Wideband), or the like is used. Wireless LANs are widely used for portable information terminals such as portable notebook personal computers having wireless LAN functions and PDAs (Personal Digital Assistants). In mobile phones that require lower power consumption, attention is paid to low-power short-distance two-way wireless communication systems such as Bluetooth (trademark) and UWB. Bluetooth (trademark) is a system that performs short-distance two-way wireless communication between a master (server) and a slave (client). In order to enable communication between devices at any location on the earth, The 2.4 GHz frequency band that can be used in the world is used.

  FIG. 5 is a diagram for explaining a method of displaying the network configuration of FIG. 4 on the display screen of the receiver (TV body 3). As shown in the figure, each AV device on the network is displayed as a wireless communication device including a transmitter and a receiver for each room. That is, all the wireless communication devices in the network are displayed on the TV unit 63. In FIG. 5, transmitter A-1 and transmitter A-2 in room A, transmitter B-1 and transmitter B-2 in room B, transmitter C-1 and transmitter C-2 in room C Are displayed as icons on the TV section 63. Detailed information such as the model name is also displayed.

  When displaying AV devices connected to a network, the above-mentioned AV devices are displayed larger on the screen as they are closer to the center of the room A where the user is located and the receiver is located. For example, when the room B is farthest from the room A, the transmitter B-1 and the transmitter B-2 in the room B are displayed smallest. The example of FIG. 5 is an example in which the display size of the device is changed according to the distance. However, this is an example, and a display device that can change display shading and color or can display in 3D represents perspective. For example, a display effect may be used. Alternatively, a combination of these is also possible.

  Next, a processing procedure for displaying the network configuration shown in FIG. 4 on the display screen as shown in FIG. 5 will be described based on FIG. 6 and FIG. FIG. 6 is a flowchart showing this display processing procedure. FIG. 7 shows details of a position where a display frame indicating each room and an image indicating each transmitter are displayed on the display screen. In FIG. 7, the horizontal direction of the display screen is the X direction and the vertical direction is the Y direction. The upper left corner of the display screen is set to coordinates (0, 0).

  Here, it is assumed that in which room each device (transmitter) is located is registered in advance. That is, in the above network configuration, the transmitter A-1 and the transmitter A-2 are located in the room A, the transmitter B-1 and the transmitter B-2 are located in the room B, and the room C is located. Are registered in advance in the receiver (TV body 3) that the transmitter C-1 and the transmitter C-2 are located.

  As shown in FIG. 6, first, the reception sensitivities Ra1, Ra2, Rb1, Rb2, Rc1, Rc2 of the transmitters A-1, A-2, B-1, B-2, C-1, C-2 are shown. (Step S100. Hereinafter, it may be simply referred to as “S100”. The same applies to other steps). Next, average receiver sensitivities Ra = (Ra1 + Ra2) / 2, Rb = (Rb1 + Rb2) / 2, Rc = (Rc1 + Rc2) / 2 of the transmitters present in the rooms A, B, C are obtained (S101).

  Next, the size of the display frame indicating each room A, B, C is obtained from the obtained average reception sensitivities Ra, Rb, Rc (S102). That is, the lengths Lxa, Lxb, and Lxc in the X direction and the lengths Lya, Lyb, and Lyc in the Y direction in the display frames of the rooms A, B, and C are expressed as Lxa: Lxb: Lxc = Lya: Lyb: Lyc = Ra. : Rb: Rc is determined so as to satisfy Rc.

  Next, display control is performed so that the display frames of the rooms A, B, and C are drawn on the display screen (S103). That is, first, as shown in FIG. 7, the center coordinates (Xa, Ya), (Xb, Yb), (Xc, Yc) of the display frames of the rooms A, B, and C are evenly arranged on the display screen. Ask to be. Next, based on the center coordinates of the display frames of the rooms A, B, and C obtained and the sizes of the display frames of the rooms A, B, and C obtained in step S102, the room A, B, and C are displayed. Draw a display frame on the display screen. For example, for room A, the coordinates of each vertex are (Xa−Lxa / 2, Ya−Lya / 2), (Xa + Lxa / 2, Ya−Lya / 2), (Xa−Lxa / 2, Ya + Lya / 2), A display frame of (Xa + Lxa / 2, Ya + Lya / 2) is drawn.

  Next, the image size indicating the transmitter (device) existing in each room is obtained from the reception sensitivity of each transmitter (S104). Specifically, the lengths Lxa1 and Lxa2 in the X direction and the lengths Lya1 and Lya2 in the Y direction of the images showing the transmitter A-1 and the transmitter A-2 are expressed as Lxa1: Lxa2 = Lya1: Lya2 = Ra1: It is determined so as to satisfy Ra2. Similarly, the lengths Lxb1 and Lxb2 in the X direction and the lengths Lyb1 and Lyb2 in the Y direction of the images showing the transmitters B-1 and B-2 are set as Lxb1: Lxb2 = Lyb1: Lyb2 = Rb1: Rb2. The lengths Lxc1 and Lxc2 in the X direction and the lengths Lyc1 and Lyc2 in the Y direction of the images indicating the transmitters C-1 and C-2 are determined as Lxc1: Lxc2 = Lyc1: Lyc2 = It is determined so as to satisfy Rc1: Rc2.

  Then, display control is performed so that an image indicating each transmitter is drawn in a display frame indicating a room where the transmitter is present (S105). For example, with respect to the transmitter A-1, an image in which the length in the X direction is Lxa1 and the length in the Y direction is Lya1 is drawn in the display frame of the room A.

  As described above, the wireless AV system 1 according to the present embodiment includes the wireless center 2 as the base device and the TV main body 3 as the terminal device. The TV main body 3 transmits the SS transmission of the wireless center 2. The SS receiving unit 61 that receives the MPEG2 stream and the command transmission data transmitted from the unit 36 and decodes the received MPEG2 stream and the like, and the TV unit 63 that outputs the display based on the video signal and outputs the sound based on the audio signal. A TV microcomputer 64 that controls the entire apparatus, and a second SS-CPU 84 that detects a communication state between the wireless center 2 and the TV main body 3 based on a retransmission request based on the electric field strength, error rate, and error rate of the received radio wave. Is provided. The TV microcomputer 64 OSD-displays AV devices connected to the network with icons or the like so as to show perspective on the screen of the TV unit 63.

  As a result, the AV device closer to the TV main body 3 that the user is viewing is displayed larger, and the AV device in a remote room is displayed smaller, and the connection status of the AV device connected to the network is sensual. It is easy to understand. In addition, by displaying the transmitter located in each room for each room, even if there are multiple transmitters with similar distances from the receiver to the transmitter, the location of the transmitter can be changed due to different rooms. It can be easily identified.

  In the present embodiment, the AV device connected to the network is OSD-displayed on the TV unit 63 to notify the connection status. However, the present invention is not limited to OSD display, and any display method may be used.

  In the present embodiment, the distance is determined according to the communication state. However, the position may be detected using GPS (Global Positioning System), and the same effect can be obtained. However, as in the present embodiment, those that use a retransmission request based on radio field intensity, error rate, and error rate can be implemented easily and at low cost because existing members can be used as they are and can be realized only by software changes. There is an effect that can be done.

  In the present embodiment, the SS transmission / reception unit 61 of the TV main body 3 detects the communication state. However, the SS transmission / reception unit 36 of the wireless center 2 detects the communication state, and the detection result is sent to the TV main body 3. Wireless transmission to the SS transceiver unit 61 is also possible. In this case, since it is not necessary to detect the communication state by the TV main body 3, the TV main body 3 can be reduced in size and power consumption.

  Further, the transmitter (wireless center 2) can detect a communication state with another transmitter (wireless center 2) and transmit the detection result to the receiver (TV main body 3). FIG. 8 is a diagram showing, in a tabular form, detection results obtained by detecting not only the receiver but also the transmitters A-2 and C-1 with the receiver and other transmitters. By obtaining a detection result as shown in the figure, the positional relationship on the plane between the receiver and the transmitter can be displayed on the display screen of the receiver, as shown in FIG. The position of the transmitter can be grasped more easily.

  Moreover, the TV main body 3 may acquire the communication state with the wireless center 2 with which the communication link was established among the communicable wireless centers 2. In this case, since the user can grasp the communication state with the wireless center 2 that the user desires to communicate with, the TV main body 3 can be moved so that the communication state is improved.

  While the device control system in the wireless AV system of the present invention has been described with reference to specific embodiments, the present invention is not limited to these. A person skilled in the art can make various changes and improvements to the configurations and functions of the invention according to the above-described embodiments or other embodiments without departing from the gist of the present invention.

  In the above embodiment, a portable TV is used as the wireless AV device. However, the present invention is not limited to a TV receiver, and can be applied to a device having a wireless communication function or a combination thereof. For example, as an AV device, in addition to a VTR (Video Tape Recorder), a recording / reproducing apparatus for recording on an HDD or a DVD may be used. In addition, as a device capable of transmitting and receiving data, a device integrated with an information device function represented by a personal computer may be used and can be applied to all systems. The contents of the transmitted / received data may be anything.

  In this embodiment, the TV receiver has been described. However, the present invention is not limited to this, and as described above, the present invention can be applied to a tuner, a personal computer, and other AV devices using the tuner.

  In addition, the types of processing units and the like, the type / format of setting information, and the like constituting the wireless communication device and the wireless AV system are not limited to the above-described embodiments. In particular, it is suitable for application to a device that complies with HAVi.

  As a tuner, two broadcasts of a BS tuner and a UHF / VHF tuner are given as an example, but the type and number of broadcasts such as a CS tuner are not limited to this.

  In this embodiment, the names wireless communication device and wireless AV system are used. However, this is for convenience of explanation, and a wireless communication device, AV device, device control system, or the like may be used.

  The wireless AV system described above is also realized by a program for causing the wireless AV system to function. This program is stored in a computer-readable recording medium. In the present invention, as the recording medium, the main memory itself may be a program medium, or a program reading device is provided as an external storage device and can be read by inserting the recording medium therein. May be.

  In either case, the stored program may be configured to be accessed and executed by the CPU, or in any case, the program is read and the read program is not shown in a program storage area. The program may be downloaded and executed by the program. It is assumed that this download program is stored in the main device in advance.

  Here, the program medium is a recording medium configured to be separable from the main body, such as a tape system such as a magnetic tape or a cassette tape, a magnetic disk such as a floppy (registered trademark) disk or a hard disk, or a CD-ROM / MO /. It may be a medium carrying a fixed program including a disk system of an optical disk such as MD / DVD, a card system such as an IC card / optical card, or a semiconductor memory such as a mask ROM, EPROM, EEPROM, flash ROM or the like. .

  Furthermore, although not shown in the figure, when a means capable of connection to an external communication network is provided, the program is fluidly supported so that the program is downloaded from the communication network via the communication connection means. It may be a medium.

  When the program is downloaded from the communication network in this way, the download program may be stored in the main device in advance, or may be installed from another recording medium. The content stored in the recording medium is not limited to a program, and may be data.

  The present embodiment does not limit the scope of the present invention, and various modifications are possible within the scope of the present invention. For example, the present embodiment can be configured as follows.

  That is, in order to solve the above-described problem, the display device according to the present invention controls a receiving unit that receives data wirelessly transmitted from a plurality of transmitting devices, a display unit that displays and outputs information, and an operation of the device itself. Control means, and the control means detects a reception state of the reception means, and an image showing each of the transmission devices based on the reception state detected by the reception state detection means. Display control means for controlling display of the display means so as to display.

  Here, the reception state can be detected based on any one of the electric field strength of the received radio wave and the error rate of the received data, or a combination thereof.

  According to the above configuration, the reception state detection unit detects the reception state of the reception unit, and based on the detected reception state, the display control unit controls the display unit to display the image of each transmission device. The reception state depends on the obstacle between the transmission device and the display device, but basically depends on the distance between the transmission device and the display device. Therefore, by displaying the image of each transmission device based on the reception state, the user can easily grasp the rough distance from the display device to each transmission device, and can easily find the desired transmission device. It becomes.

  In order to solve the above problems, a display device according to the present invention is a communication unit that performs wireless data communication with each of a plurality of communication devices, a display unit that displays and outputs information, and a control unit that controls the operation of the device itself. The control means displays a communication state detection means for detecting a communication state of the communication means, and displays an image showing each of the communication devices based on the communication state detected by the communication state detection means. In this way, the display means is provided with display control means for controlling the display.

  Here, the communication state can be detected based on at least one of the electric field strength of the received radio wave, the error rate of the received data, and the number of data retransmission requests based on the error rate.

  According to the above configuration, the communication state detection unit detects the communication state of the communication unit, and based on the detected communication state, the display control unit controls the display unit to display the image of each communication device. The communication state depends on the obstacle between the communication device and the display device, but basically depends on the distance between the communication device and the display device. Therefore, by displaying an image of each communication device based on the communication state, the user can easily grasp the rough distance from the display device to each communication device, and can easily find a desired communication device. Become.

  The display control means determines the distance from the own apparatus based on the communication state detected by the communication state detection means, and displays an image showing each of the communication apparatuses based on the determined distance. Is desirable. In this case, since the image of each communication device is displayed based on the perspective, the user can more easily grasp the rough perspective from the display device to each communication device, and it is easier to find the desired communication device. It becomes.

  Here, in order to display an image based on perspective, for example, based on perspective, it is possible to display a large image of a communication device located near and display a small image of a communication device located far away. It is done. Alternatively, it is conceivable to express the depth by 3D display.

  In addition, it is preferable that the communication state detection unit detects a communication state with the communication apparatus in which a communication link is established. In this case, since the user can grasp the reception state with the communication device with which the user wants to communicate, the display device can be moved so that the reception state is improved.

  Further, it is desirable that the display control means display-controls the display means so that an image showing each of the communication devices is displayed in a form corresponding to the communication state detected by the communication state detection means.

  Here, examples of the form include the shape, size, and color of the image. In addition, as a form according to the communication state, for example, when the communication state is good, it is considered to sharpen the contour of the image, increase the size of the image, or darken the color of the image. It is done. On the other hand, when the communication state is poor, it is conceivable to blur the outline of the image, reduce the size, or lighten the color. Therefore, according to said structure, a user can grasp | ascertain the rough distance from a display apparatus to each transmission apparatus sensuously, and can find a desired transmission apparatus rapidly.

  In addition, the information processing apparatus further includes storage means for storing information on a room in which the communication device is located, and the display control means includes, in each of the rooms, a communication state detected by the communication state detection means in the room. It is desirable to perform display control so that an image showing the room is displayed based on a communication state of a communication device located. In this case, even for a plurality of communication devices having similar distances from the display device to the communication device, the location of the communication device can be easily identified due to different rooms.

  In order to solve the above problems, a wireless communication system according to the present invention is a wireless communication system in which one or a plurality of communication devices are connected to a display device so as to be capable of wireless communication, and the communication device includes the display device and data. Communication means for performing wireless communication of the device and control means for controlling the operation of the device itself, wherein the display device is communication means for performing wireless communication of data with the communication device, and display means for displaying and outputting information. And a control means for controlling the operation of the own apparatus, the control means of the communication device comprising: a communication state detection means for detecting a communication state of the communication means; and a communication state detected by the communication state detection means Communication state transmitting means for transmitting to the display device via the communication means, and the control means of the display device transmits the communication state detected by the communication state detecting means of the communication device. A communication state acquisition unit that acquires the communication unit, and a display control unit that controls the display unit to display an image indicating the communication device based on the communication state acquired by the communication state acquisition unit. It is a configuration.

  Here, the communication state can be detected based on at least one of the electric field strength of the received radio wave, the error rate of the received data, and the number of data retransmission requests based on the error rate.

  According to the above configuration, the communication state detection unit detects the communication state of the communication unit, and based on the detected communication state, the display control unit controls the display unit to display the image of each communication device. The communication state depends on the obstacle between the communication device and the display device, but basically depends on the distance between the communication device and the display device. Therefore, by displaying an image of each communication device based on the communication state, the user can easily grasp the rough distance from the display device to each communication device, and can easily find a desired communication device. Become.

  In addition, since the communication device detects the communication state, the display device does not need to include a communication state detection unit. Therefore, it is possible to reduce the size and power consumption of the display device. This is suitable for a portable terminal device such as a mobile phone or a PDA.

  The display control unit of the display device determines the distance from the own device based on the communication state acquired by the communication state acquisition unit, and displays an image indicating the communication device based on the determined distance. It is desirable to control the display of the display means. In this case, since the image of each communication device is displayed based on the perspective, the user can more easily grasp the rough perspective from the display device to each communication device, and it is easier to find the desired communication device. It becomes.

  Here, in order to display an image based on perspective, for example, based on perspective, it is possible to display a large image of a communication device located near and display a small image of a communication device located far away. It is done. Alternatively, it is conceivable to express the depth by 3D display.

  In addition, it is preferable that the communication state acquisition unit of the display device acquires a communication state with the communication device with which a communication link is established. In this case, since the user can grasp the reception state with the communication device with which the user wants to communicate, the display device can be moved so that the reception state is improved.

  Moreover, it is desirable that the display control unit of the display device display-controls the display unit so that an image showing the communication device is displayed in a form corresponding to the communication state acquired by the communication state acquisition unit. In this case, as described above, the user can sensuously grasp the rough distance from the display device to each transmission device, and can quickly find a desired transmission device.

  The display device further includes storage means for storing information on a room where the communication device is located, and the display control means of the display device acquires the communication state acquisition means for each of the rooms. It is desirable to perform display control so that an image showing the room is displayed based on a communication state of a communication device located in the room among the communication states. In this case, even for a plurality of communication devices having similar distances from the display device to the communication device, the location of the communication device can be easily identified due to different rooms.

  The wireless communication system according to the present invention is configured as described above, wherein the communication device includes a plurality of communication devices, and each communication device performs wireless communication of data with another communication device together with the display device. The communication state detecting means detects the communication state with the display device and other communication devices, and the display control means of the display device is the communication state in each communication device acquired by the communication state acquiring means. Based on the above, the display means is controlled to display an image showing the communication device.

  By the way, although the positional relationship on a straight line (one-dimensional) such as rough perspective from the display device to each communication device can be easily grasped depending on the communication state, a plane (2) in which the direction from the display device to each communication device is added. It is difficult to easily grasp the positional relationship on (dimension) unless an electromagnetic wave having directivity is transmitted and received.

  On the other hand, according to the above configuration, each communication device detects the communication state with the display device and each of the other communication devices, and displays an image indicating each communication device based on the detected communication state. is doing. In this case, since a certain communication device can roughly grasp the distance between the display device and each of the other communication devices, the positional relationship on the plane between the display device and the communication device can be easily grasped. .

  In the above configuration, the communication device also detects the communication state with the display device. However, the display device further includes a communication state detection unit that detects the communication state with each communication device. You can also.

  In order to solve the above problems, a display device control method according to the present invention includes a reception unit that receives data wirelessly transmitted from a plurality of transmission devices, and a display unit that displays and outputs information. In this method, the reception state of the reception unit is detected, and an image showing each of the transmission devices is displayed based on the detected reception state.

  According to the above method, the reception state of the reception unit is detected, and the image of each transmission device is displayed based on the detected reception state. The reception state depends on the obstacle between the transmission device and the display device, but basically depends on the distance between the transmission device and the display device. Therefore, by displaying the image of each transmission device based on the reception state, the user can easily grasp the rough distance from the display device to each transmission device, and can easily find the desired transmission device. It becomes.

  In order to solve the above-described problem, a display device control method according to the present invention includes a communication unit that wirelessly communicates data with each of a plurality of communication devices, and a display unit that displays and outputs information. In this method, the communication state of the communication unit is detected, and an image showing each of the communication devices is displayed based on the detected communication state.

  According to said method, the communication state of a communication means is detected and the image of each communication apparatus is displayed based on the detected communication state. The communication state depends on the obstacle between the communication device and the display device, but basically depends on the distance between the communication device and the display device. Therefore, by displaying an image of each communication device based on the communication state, the user can easily grasp the rough distance from the display device to each communication device, and can easily find a desired communication device. Become.

  In order to solve the above problems, a control method for a wireless communication system according to the present invention is a wireless communication system in which one or a plurality of communication devices are connected to a display device so as to perform wireless communication, and the communication device includes the display device. A communication means for performing wireless communication of data with the apparatus, and the display device controls a wireless communication system including communication means for performing wireless communication of data with the communication apparatus, and display means for displaying and outputting information. A method for detecting a communication state of a communication unit of the communication device, transmitting the detected communication state from the communication device to the display device, and displaying an image indicating the communication device based on the transmitted communication state. It is a method of displaying on the display means of the display device.

  According to said method, the communication state of a communication means is detected and the image of each communication apparatus is displayed based on the detected communication state. The communication state depends on the obstacle between the communication device and the display device, but basically depends on the distance between the communication device and the display device. Therefore, by displaying an image of each communication device based on the communication state, the user can easily grasp the rough distance from the display device to each communication device, and can easily find a desired communication device. Become. In addition, since the communication device detects the communication state, the display device does not need to detect the communication state. Therefore, it is possible to reduce the size and power consumption of the display device.

  Note that the control means in the display device can be executed on a computer by a display device control program. The control means in the wireless communication system can be executed on a computer by a wireless communication system control program. Further, by storing the display device control program and / or the wireless communication system control program in a computer-readable recording medium, the display device control program and / or the wireless communication system can be executed on any computer. A control program can be executed.

  As described above, in the display device according to the present invention, the communication state detection unit detects the communication state of the communication unit, and the display control unit displays the image of each communication device based on the detected communication state. Since the means is controlled, the user can easily grasp the rough distance from the display device to each communication device, and it is easy to find a desired communication device.

  The wireless system of the present invention is suitable for an in-home AV network system such as a display-separated type wireless TV receiver that wirelessly transmits video and / or audio data, but is not limited thereto. The present invention is widely applicable to wireless communication devices such as PHS (Personal Handy-Phone System) (registered trademark) and personal digital assistant (PDA).

It is a block diagram which shows the structure of the wireless AV system of one Embodiment of this invention. It is a block diagram which shows the structure of the wireless center of the wireless AV system shown in FIG. It is a block diagram which shows the structure of TV main body of the wireless AV system shown in FIG. FIG. 4 is a block diagram showing a mode in which six wireless centers shown in FIG. 2 are used as transmitters and one TV main body shown in FIG. 3 is used as a receiver. FIG. 5 is a diagram illustrating an example in which the configuration illustrated in FIG. 4 is displayed on a display screen of a receiver. FIG. 6 is a flowchart showing a processing operation in which the display example shown in FIG. 5 is displayed from the configuration shown in FIG. 4. FIG. 5 is a block diagram illustrating details of a position where a display frame indicating each room and an image indicating each transmitter are displayed on the display screen of the receiver illustrated in FIG. 4. It is a figure which shows the detection result which the two transmitters shown in FIG. 4 detected the communication state with each of a receiver and another transmitter with the receiver shown in FIG. 4 in a table format. It is explanatory drawing which showed the outline of the wireless AV system shown in FIG. It is a block diagram which shows an example of the conventional AV control system.

Explanation of symbols

1 Wireless AV system (wireless communication system)
2 Wireless center unit (wireless center) (transmitter) (communication device)
3, 3a-c Television main unit (TV main unit) (receiver) (display device)
11 BS terminal 12 U / VHF antenna terminal 13 Diversity terminal 14 Video 1 input terminal (with S terminal)
15 Video 2 input terminal (decoder input)
16 Video 3 input terminal (for monitor / BS output)
17 AC power supply unit 18 Car-DC power supply unit 21 Video 4 input terminal (also used for TV output)
22 AC power supply unit 23 Car-DC power supply unit 31 BS tuner 32 U / VHF tuner 33 Video / audio demodulation unit 34 Audio switching unit 35 First selector 36 SS transmission / reception unit (communication unit) (communication state detection unit) (communication state detection unit) Transmission means)
37 Wireless Center Microcomputer (Wireless Center Microcomputer) (Control Unit)
38 EEPROM (memory means)
51 A / D converter 52 MPEG2 encoder 53 SS wireless transmission / reception engine 54 SS-CPU
61 SS transceiver unit (communication means) (communication state detection means) (communication state acquisition means)
62 Second selector 63 TV section (display means)
65 EEPROM (memory means)
64 TV microcomputer (control means)
66 Remote control light receiving unit 67 Battery 68 Battery charger microcomputer 81 SS wireless transmission / reception engine 82 MPEG2 decoder 83 D / A conversion unit 84 Second SS-CPU
110 OSD generator (display control means)

Claims (15)

Receiving means for receiving data wirelessly transmitted from a plurality of transmitting devices;
Display means for displaying and outputting information;
Storage means for storing information on a room where the transmission device is located;
Control means for controlling the operation of the device itself,
The control means includes
Receiving state detecting means for detecting the receiving state of the receiving means;
For each of the rooms, the display means is displayed so as to display an image showing the room based on reception states of a plurality of transmission devices located in the room among reception states detected by the reception state detection unit. A display device comprising display control means for controlling.   The display device according to claim 1, wherein the reception state detection unit detects a reception state based on at least one of an electric field intensity of a received radio wave and an error rate of received data. A communication means for wirelessly communicating data with each of a plurality of communication devices;
Display means for displaying and outputting information;
Storage means for storing information on a room in which the communication device is located;
A display device comprising control means for controlling the operation of the device itself,
The control means includes
Communication state acquisition means for acquiring a communication state of the wireless communication with each of the plurality of communication devices;
For each of the rooms, the display unit is displayed so as to display an image indicating the room based on communication states of a plurality of communication devices located in the room among communication states acquired by the communication state acquisition unit. A display device comprising display control means for controlling. A communication state detecting unit for detecting a communication state of the communication unit;
The display device according to claim 3, wherein the communication state acquisition unit acquires the communication state of the wireless communication with each of the plurality of communication devices via the communication state detection unit.   The communication state detecting means detects a communication state based on at least one of an electric field intensity of a received radio wave, an error rate of received data, and a number of data retransmission requests based on the error rate. Item 5. The display device according to Item 4.   The communication state acquisition unit acquires, from each of the plurality of communication devices, the communication state of the wireless communication with the display device detected by the communication device from the communication device via the communication unit. The display device according to claim 3. The display control unit determines the distance from the own device based on the communication states of the plurality of communication devices located in the room among the communication states acquired by the communication state acquisition unit, and based on the determined perspective The display device according to any one of claims 3 to 6, wherein the display unit is controlled to display the image.   The display device according to claim 7, wherein the display control unit performs display control of the display unit so as to display based on a perspective method.   The display device according to claim 3, wherein the communication state acquisition unit acquires a communication state with the communication device with which a communication link is established. The display control means controls the display means to display the image in a form according to communication states of a plurality of communication devices located in the room among the communication states acquired by the communication state acquisition unit. The display device according to claim 3, wherein the display device is a display device.   A wireless communication system in which the display device according to any one of claims 3 to 10 and a plurality of communication devices are connected so as to be capable of wireless communication. A display device control method comprising: a receiving unit that receives data wirelessly transmitted from a plurality of transmitting devices; a display unit that displays and outputs information; and a storage unit that stores information on a room in which the transmitting device is located. And
A reception state detection step of detecting a reception state of the receiving means;
Based on the reception states of a plurality of transmission devices located in each of the rooms among the reception states detected in the reception state detection step, the display means is controlled to display an image showing the room. A display control method comprising: a display control step. A display device control method comprising: communication means for performing wireless data communication with each of a plurality of communication devices; display means for displaying and outputting information; and storage means for storing information on a room in which the communication device is located. And
A communication state acquisition step of acquiring a communication state of the wireless communication with each of the plurality of communication devices;
Based on the communication states of a plurality of communication devices located in each of the rooms among the communication states acquired in the communication state acquisition step, display control of the display unit is performed so as to display an image showing the room. A display control method comprising: a display control step.   A display device control program for operating the display device according to any one of claims 1 to 10, wherein the display device control program causes a computer to function as the control means.   A computer-readable recording medium on which the display device control program according to claim 14 is recorded.

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