JP2006246026A - Digital device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple user interface for specifying digital appliances arranged in a real space, and connected with each other through a network such as a home network. <P>SOLUTION: This digital device includes a (wide band) digital interface with non-directivity and a digital interface with directivity and a button, and the digital appliances in the real space are specified by using the directivity and the button. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention proposes a new user interface for comprehensively controlling devices in a home network connected to each other by a wired or wireless LAN.

A home network for connecting home devices to each other using digital communication means such as IEEE802.11 (wireless LAN), USB, and IEEE1394 is considered. Where,
● Connect the TV to the front door intercom and display the interphone image on the TV.

  ● Access the Internet from the game console via the home gateway.

● Save images taken with a digital camera to the home server.
Such applications are proposed.

Moreover, as a prior art example, patent document 1 and patent document 2 can be mention | raise | lifted, for example.
JP 2001-128025 A JP 2005-501446 A

  However, when the number of devices connected to the home network increases in the above conventional example, the user can do and want to do more things, which should be convenient, but the operation becomes rather complicated and the environment is never comfortable. .

  In order to solve the above problems, the present invention proposes a new user input device called “stick”. Using this stick, the communication partner of the first interface means is set to the second interface means for the digital device having the first interface means and the second interface means characterized by spatial directivity. The interface means is used for identification.

  In other words, the present invention skillfully realizes the correspondence between a logical address such as an IP address and a digital device in the real space, so that the user can easily identify the communication partner without being aware of the logical address. Can be identified.

  As described above, the present invention proposes a new user input device called “stick”. Using this stick, the communication partner of the first interface means is set to the second interface means for the digital device having the first interface means and the second interface means characterized by spatial directivity. The interface means is used for identification.

  In other words, the present invention skillfully realizes the correspondence between a logical address such as an IP address and a digital device in the real space, so that the user can easily identify the communication partner without being aware of the logical address. Can be identified.

  Hereinafter, embodiments of the present invention will be described based on examples.

First Embodiment FIG. 1 is a sketch for explaining the concept of the present invention. Reference numeral 105 denotes a user input device called a stick, and reference numeral 106 denotes a button attached to the stick. 101 is a home server, 103 is a wall-mounted display, and 102 and 104 are stick receivers of respective devices. Now, assume that the user wants to watch a movie stored on the home server 101 on the display 103. Both the home server 101 and the display 103 are connected to a home network, and movie moving image data can be displayed on the display via the home network. However, not only the contents of the home server but also the contents displayed on the display are not shown in FIG. 1, but the image data of a digital camera or digital video camera that is also wirelessly connected to the home network is a source candidate. is there. Therefore, the user needs to explicitly specify that the contents of the home server 101 are to be displayed on the display. In the present invention, the user embodies the instruction using the stick 105. The user points the stick 105 to the home server 101 like 105-1. When the stick 105 is pointed, the stick receiver 102 is lit yellow at rollover, and the user is informed that the stick 105 is properly facing the home server 101. When the user depresses the button 106 (button down), the stick receiver 102 will flash yellow to indicate that it has been selected. With the button 106 depressed (button down), the user turns the stick toward the display 103 as indicated by 105-2. At that moment, the stick receiver 104 also blinks yellow to inform the user that the stick is facing the display 103. Therefore, the user can confirm that the stick is properly facing the display 103, and pushes up the button 106 that has been pressed down. Through this series of operations, the user can designate “what” to “what”, and the home server 101 can be associated with the display 103. For example, if the default application of this combination is designated to play a movie, the user can play a movie from the home server 101 that is not a playback image from a digital video or a broadcast from a cable by a very simple operation. Can see. This series of operations realizes drag-and-drop using the mouse of the graphic user interface of the PC in the real space.

  Now, how this embodiment is realized will be described in detail below. FIG. 2 is a block diagram for technically explaining the conceptual diagram of FIG. 1, and the same components as those in FIG. 101 is a home server, 103 is a display, and 105 is a stick. As a component inside the home server 101, reference numeral 111 denotes network means, which uses a wireless LAN interface in this embodiment. Reference numeral 113 denotes a main function realizing unit of the device. In the case of the home server 101, a storage unit including a hard disk drive and its control unit. Reference numeral 102 denotes stick receiver means, the operation of which will be described in detail later. Reference numeral 112 denotes a control means for controlling the entire components described above, and a CPU is used in this embodiment. Next, as a component inside the display 103, reference numeral 115 denotes network means, which uses a wireless LAN as in the home server. Reference numeral 117 denotes a main function realizing unit of the device, and in the case of the display 103, a display unit including a flat display display unit and its control unit. Reference numeral 104 denotes a stick receiver means, and 116 denotes a control means for controlling the entire components described above.

  Now, the mechanism of the stick interface of this embodiment will be described. The stick interface of this embodiment is the simplest model, and is specifically realized by using a laser pointer unit and a light receiving unit. This is shown in FIG. As an internal element of the stick 105, a light emission processing unit 131 digitally switches the light emission of the laser pointer. Reference numeral 132 denotes a drive unit that actually drives the light emitting element 133 of the laser pointer, and 133 denotes a light emitting element. The light emitting element is composed of a light emitting diode and a lens, and light emitted from the light emitting diode is converted into parallel light by the lens, so that efficient directivity can be obtained. The light that has become parallel light travels along the optical path 134 toward the stick receiver of the home server 102. In this embodiment, the stick 105 has two states at the time of light emission, and the state is switched by the light emission processing unit 131 based on an input using the button 106 from the user. The two states in this embodiment are “continuous light emission” and “intermittent light emission”. Of course, it is essential that there are a plurality of states. In order to realize this, for example, the wavelength may change. Also, although not the essence of the present invention, considering an actual device, the stick has a third mode of “no issue”, and should save power by shifting to the “no issue” mode manually or automatically. Will. On the stick receiver side in the home server, 135 is a photodiode, and 136 is an amplifier unit that amplifies the output. This amplifier unit incorporates a filter and the like, and is devised to increase the S / N of the signal. Reference numeral 137 denotes a light reception processing unit that detects the light reception state, and can detect the two states of the stick described above. That is, in addition to “no light reception”, there are two states of “continuous light reception” and “intermittent light reception”. The light receiving processing unit 137 can control the lamp unit 139 via a driver 138 that drives the lamp unit 139. Here, the lamp is lit in five states: “yellow light emission”, “yellow flashing light emission”, “green light emission”, “red light emission”, and “no light emission”. The light reception processing unit 137 controls lighting of the lamp 139 based on the state of light reception by the photodiode 135.

  Now, the operation of this embodiment will be described with reference to the sequence diagram of FIG. 4 is a diagram for explaining communication and operation among the stick 105, the home server 101, and the display 103. Here, a thin arrow indicates a directional stick interface exchange, and a thick arrow indicates a wireless LAN exchange.

  First, at “C101”, the user points the stick 105 toward the home server 101. When the home server 101 (more precisely, the stick receiver 102 attached to the home server 101) receives continuous light from the stick 105, it rolls over its lamp in yellow. Next, at “C102”, the user depresses the button 106 of the stick 105. Since the home server 101 receives the intermittent light from the stick 105, the home server 101 causes its own lamp to flash in yellow. Next, at “C103”, the user removes the orientation of the stick 105 from the home server 101 (while trying to face the display 103) while pressing the button 106 down. At this time, the home server does not detect the received light in the intermittent light state, so that it recognizes that it has designated the source. The home server 101 that has recognized that the source has been designated maintains the yellow blinking of the lamp, and at “C104”, the local server connected to it via the first interface (in this case, the wireless LAN) Broadcast to other devices in the network that you have been sourced. The display 103 receives the broadcast and recognizes that the home server 101 is designated as a source. Next, at “C105”, the user turns the stick 105 toward the display 103 while pressing the button 106 down. Since the display 103 (more precisely, the stick receiver 104 attached to the display 103) receives intermittent light from the stick 105, the display 103 recognizes that the destination is specified and emits its lamp in green. Next, in “C107”, the display 103 notifies the home server 101 that it is the destination, and broadcasts the other device in the network to cancel the source designation of the home server 101. Do. In “C107”, the home server 101 knows that the destination is designated on the display 103, and stops flashing its own lamp in yellow. Next, in “C108”, the display 103 requests the home server 101 for service, in this case, sending out movie data. The home server 101 starts a service for the display 103 at “C109” and ends the service at “C200”.

  As described above, the user can specify a device arranged in the real space very easily using a stick, and this series of operations enables drag-and-drop using a mouse of a PC graphic user interface. It can be realized in space. In addition, by a similar operation, a click or double click by a button down / up operation can be realized. For example, by clicking on the stick towards the display 103, the display 103 knows that it is the source and the destination and executes the associated default application, here for example watching terrestrial broadcasts. be able to.

Second Embodiment The concept of the second embodiment will be described with reference to FIG. In the first embodiment, 105 is used as a stick, but in the second embodiment, instead, a high-functional type 800 shown in FIG. 6 is used as a stick. In FIG. 6, 802 is a numeric keypad, 803 is a stick button, 804 is a display panel and a liquid crystal panel is used in this embodiment, 805 is a stick issuing unit that emits parallel light, and 806 is a wireless LAN antenna attached to the stick. , 807 are cross keys, which are used to move the cursor displayed on the liquid crystal panel 804, and 808 is an alternate key. Now, assume that the user wants to watch a movie stored on the home server 101 shown in FIG. 5 on the display 103 as in the first embodiment. Both the home server 101 and the display 103 are connected to a home network, and movie moving image data can be displayed on the display via the home network. However, not only the contents of the home server but also the contents displayed on the display are not shown in FIG. 1, but the image data of a digital camera or digital video camera that is also wirelessly connected to the home network is a source candidate. It is the same as the first embodiment. In this embodiment, the user embodies the instruction using the stick 800. The user points the stick 800 toward the home server 101. When the stick 800 is pointed, the stick receiver 102 is lit in yellow when it is rolled over, and makes the user know that the stick 800 is properly facing the home server 101. When the user depresses the button 803 (button down), the stick receiver 102 is in a yellow blinking state to indicate that it has been selected. The user turns the stick toward the display 103 while keeping the button 803 pressed down (button down). At that moment, the stick receiver 104 also blinks yellow to inform the user that the stick is facing the display 103. Therefore, the user can confirm that the stick is properly facing the display 103, and pushes up the button 803 that has been pressed down. Through this series of operations, the user can designate “what” to “what”, and the home server 101 can be associated with the display 103. Next, what is desired to be viewed on the display among the contents stored in the home server 101 is selected. In the first embodiment, since a simple stick was used, only the default application could be executed. However, in this embodiment, more advanced settings can be made. At the timing when the button is pushed up in the above operation, the stick 800 acquires the executable operation from the home server 101 and displays it on the display panel of the stick 800 as shown in FIG. This display can also be displayed on the screen of the display 103 at the same time. The user uses the cross key to move the cursor and specify the reproduction of the content desired by the user. The user can watch a movie from the home server 101 that is not a reproduced image from a digital video or a broadcast from a cable, by this series of extremely simple and intuitive operations.

  FIG. 8 shows a block diagram of the stick 800 of this embodiment. Reference numeral 811 denotes a wireless LAN processing unit, and 806 denotes an antenna thereof. Reference numeral 812 denotes an optical pointer processing unit, and 805 denotes the light emitting unit. This part corresponds to the simple stick described in the first embodiment. A display unit 804 and a CPU 813 for controlling the inside of the stick are connected to the wireless LAN processing unit 811 and the optical pointer processing unit 812 through an internal bus 814. Further, a button 803, an alternate key 808, a numeric keypad 802, and a cross key 807 are connected to the CPU 813, respectively.

  Now, the operation of this embodiment will be described with reference to the sequence diagram of FIG. The diagram for explaining the sequence of FIG. 9 is for explaining the communication and operation between the stick 800, the home server 101, and the display 103. Here, a thin arrow indicates a directional stick interface exchange, and a thick arrow indicates a wireless LAN exchange.

  First, at “C501”, the user points the stick 800 toward the home server 101. When receiving the continuous light from the stick 800, the home server 101 (more precisely, the stick receiver 102 attached to the home server 101) causes its lamp to emit yellow light by rollover. Next, at “C502”, the user depresses the button 803 of the stick 800. Since the home server 101 receives intermittent light from the stick 800, the home server 101 causes its own lamp to flash in yellow. Next, at “C503”, the user removes the orientation of the stick 800 from the home server 101 (in an attempt to face the display 103) while keeping the button 803 depressed. At this time, the home server does not detect light reception in the intermittent light state, so that it can recognize that the source has been designated. Therefore, while maintaining the yellow blinking of the lamp, in "C504", the source is specified to the other device in the local network connected to it via the first interface (in this case, the wireless LAN). To be notified by broadcast. The display 103 receives the broadcast and recognizes that the home server 101 is designated as a source. Next, at “C505”, the user turns the stick 800 toward the display 103 while keeping the button 803 depressed. The display 103 (more precisely, the stick receiver 104 attached to the display 103) receives intermittent light from the stick 800, so that it recognizes that it has been designated as a destination and emits its own lamp in green. Next, in “C507”, the display 103 notifies the home server 101 via the first network that it is a destination, and notifies other devices in the network of the previous home server. Broadcast to release the source designation of 101 is performed. In “C507”, the home server 101 knows that the destination is designated on the display 103, and stops flashing its own lamp in yellow. Next, in “C508”, the server 101 notifies the stick 800 of a list of services that can be provided to the display 105 via the first network. In the case of the present embodiment, this service is the contents of content as shown in FIG. The stick 800 displays the received service list on its own panel, determines a service by an input from the user, and notifies the server 101 of the selected service by “C509”. The home server 101 starts a service for the display 103 at “C510” and ends the service at “C600”.

  As described above, the user can specify a device arranged in the real space very easily using a stick and set the service of the device.

Other Embodiments In the above embodiments, the wireless LAN has been described as the first interface means of the apparatus. However, the present invention is not limited to this. All digital interfaces can be the primary interface, regardless of whether they are directional or wired / wireless. The second interface means has been described as a combination of a laser pointer and a light receiving element. However, the present invention is not limited to these, and any directional interface means can be the second interface means. Also, the device identification sequence is not limited to the first embodiment.

Diagram showing the concept of the first embodiment Block diagram for explaining the first embodiment The figure explaining the stick interface of a 1st Example Sequence diagram for explaining the first embodiment Diagram showing the concept of the second embodiment External view of stick of second embodiment Panel display of the stick of the second embodiment Block diagram of the stick of the second embodiment Sequence diagram for explaining the second embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Home server 102 Stick receiver attached to home server 103 Wall display 104 Stick receiver attached to wall display 105 Stick 106 Stick button 111 Home server network means 112 Home server control means 113 Home server storage means 115 Display network Means 116 Display control means 117 Display display means 131 Light emission processing section 132 Driver 133 Light emission means 134 Parallel light 135 Light reception means 136 Amplifier 137 Light reception processing section 138 Lamp driver 139 Tally lamp 800 Stick of second embodiment 802 Numeric keypad 803 Stick button 804 Display panel 805 Issuing unit for emitting parallel light 806 Wireless LAN Antenna 807 cross key 808 alternate key 811 wireless LAN processing unit 812 optical pointer processing unit 813 CPU
814 Internal bus

Claims (50)

  A digital apparatus having a first interface means for performing data communication and a second interface means characterized by having directivity, wherein the second interface means is a communication partner of the first interface means. A digital device characterized in that it is determined by input from.   A network comprising the digital device of claim 1.   2. The digital device according to claim 1, wherein the second interface means has first and second reception states in addition to a state where there is no input signal. A digital apparatus for determining a communication partner of an interface means.   A network comprising the digital device of claim 3.   4. The digital apparatus according to claim 3, further comprising display means, wherein the display means has first, second and third display states, and the reception state of the second interface means is the first. The first display state is displayed in the case of the reception state, the second display state is displayed in the case of the second reception state, and the third display state is displayed in the case of no reception signal. A digital device.   A network comprising the digital device of claim 5.   6. The digital device according to claim 5, wherein the third display state is a state in which the display means displays nothing.   A network comprising the digital device of claim 7.   A digital device having wirelessly directional transmission means and input means for switching the transmission state of the transmission means, wherein the transmission means is not transmitting, in addition to at least two of the first and second A transmission state, and the input means has at least two first and second input states, performs transmission in the first transmission state when in the first input state, and transmits in the second input state. A digital apparatus that performs transmission in two transmission states.   10. The digital apparatus according to claim 9, wherein the input means for switching the state of the directional transmission means is a button input means, and the button input means uses the state in which the button is depressed as the first input means, A digital device characterized in that the second input state is a state in which is not depressed.   A first digital device having a wireless and directional transmission means, an input means for switching a transmission state of the transmission means, a first interface means for performing data communication, and a directional characteristic. A combination with a second digital device having two interface means, wherein the state of the transmission means of the first digital device switches according to the input means of the first digital device, and the transmission of the first digital device The input state of the second interface of the second digital device is switched depending on the transmission state of the means, and the communication of the first interface of the second digital device is performed by the input means of the second interface of the second digital device. A combination of digital devices characterized in that the other party decides.   A network comprising a combination of digital devices of claim 11.   12. The combination of digital devices according to claim 11, wherein the transmission means of the first digital device has at least two first and second transmission states in addition to the state of not transmitting, The input means of the digital device has first and second at least two input states, and the second interface means of the second digital device has the first and second at least two states in addition to the state of no input signal. In a combination of the first and second digital devices having two reception states, when the input means of the first digital device is in the first state, the transmission means of the first digital device is A signal in one transmission state is transmitted, and the second interface means of the second digital device receives the signal to enter the first reception state, and the first digit When the state of the input means of the digital device is in the second state, the transmission means of the first digital device transmits a signal of the second transmission state, and the second interface means of the second digital device A combination of digital devices, wherein a signal is received and the second reception state is established.   A network comprising a combination of digital devices of claim 13.   14. The combination of digital devices according to claim 13, wherein the input means of the first digital device is a button input means, and the button input means uses the state in which the button is depressed as the first input means, and the button is depressed. A combination of digital devices, characterized in that the uninputted state is the second input state.   A network comprising a combination of digital devices of claim 15.   16. The combination of digital devices according to claim 15, wherein said second digital device additionally has display means, and said display means has first, second and third display states, the second display device. When the reception state of the interface means is the first reception state, the first display state is displayed, when the second reception state is displayed, the second display state is displayed, and when there is no reception signal, the third display state is displayed. A combination of digital devices characterized by displaying a display state.   A network comprising a combination of digital devices of claim 17.   A first digital device having a wireless and directional transmission means, an input means for switching a transmission state of the transmission means, a first interface means for performing data communication, and a directional characteristic. Three digital devices, a second digital device having two interface means, a first interface means for performing data communication, and a third digital device having second interface means characterized by directivity A combination of devices, wherein the state of the transmission means of the first digital device is switched according to the input means of the first digital device, and the second and third states are changed according to the transmission state of the transmission means of the first digital device. The input state of the second interface of the digital device is switched, and the second interface of the second and third digital devices is switched. By the input means of Esu, combinations of the three digital device first interface of the communication partner of the second digital device and determines the first interface of the third digital device.   20. A network comprising a combination of digital devices of claim 19. 20. A combination of digital devices of claim 19, comprising
The transmission means of the first digital device has at least two transmission states of the first and second in addition to the state of not transmitting,
Further, the input means of the first digital device has at least two input states of first and second,
Further, the second interface means of the second digital device has at least two reception states of the first and second in addition to the state of no input signal,
The second interface means of the third digital device has first, second, and third digital devices having at least two reception states of the first and second in addition to the state of no input signal. In the combination of
When the state of the input means of the first digital device is the first state, the transmission means of the first digital device transmits a signal of the first transmission state, and the second state of the second digital device The interface means receives the signal and enters the first reception state,
Thereafter, the state of the input means of the first digital device becomes the second state, and accordingly the transmission means of the first digital device transmits a signal of the second transmission state, and the second digital device The second interface means receives the signal and enters the second reception state,
Thereafter, the state of the input means of the first digital device remains in the second state, that is, the transmission means of the first digital device also transmits the signal of the second transmission state, The second interface means of the digital device receives the signal and enters the second reception state,
After that, the state of the input means of the first digital device again becomes the first state, and accordingly the transmitting means of the first digital device also transmits a signal of the second transmission state, and the third digital device The second interface means receives the signal and enters the first reception state. A combination of three digital devices.   A network comprising a combination of digital devices of claim 21.   22. The combination of the three digital devices according to claim 21, wherein the input means of the first digital device is a button input means, and the button input means uses the state where the button is depressed as the first input means. A combination of three digital devices, wherein the second input state is a state in which is not depressed.   A network comprising a combination of digital devices of claim 23.   24. The combination of the three digital devices according to claim 23, wherein the second and third digital devices have display means in addition, and the display means displays the first, second and third display states. If the reception status of the second interface means is the first reception status, the first display status is displayed. If the reception status is the second reception status, the second display status is displayed and no reception signal is displayed. In the case of, a combination of digital devices characterized by displaying a third display state.   A network comprising a combination of digital devices of claim 25.   A combination of a first digital device having wireless directional transmission means and a second and third digital device having reception means for receiving signals transmitted from wireless directional transmission means. The first device is oriented in the direction of the second device, the directional signal transmitted from the first device is received by the second device, and then the first device is directed in the direction of the third device. A combination of digital devices characterized in that the second device is associated with the third device by the third device receiving a directional signal transmitted from the first device.   A network comprising a combination of digital devices of claim 27.   Transmitting from a first digital device having a first interface means for receiving a signal transmitted from a wirelessly directional transmitting means, a second interface means for transmitting data, and a wirelessly directional transmitting means A first digital means having a first interface means for receiving the transmitted signal and a second interface means for receiving data, wherein the first apparatus receives the directional signal; A combination of digital devices, wherein when the second device receives the directional signal, data transmission is started from the first device to the second device.   A network comprising a combination of digital devices of claim 29.   A first interface means for receiving a signal transmitted from a wireless directional transmission means; a second interface means connected to a network for data communication; and further connected via the network. A digital device having a communication partner device, and after the first interface means receives a directional signal, transmits data from the communication partner device via the second interface means. A digital device which starts data communication with the communication partner device when information is received.   A network comprising a combination of digital devices of claim 31.   A first interface means for receiving a signal transmitted from a wireless directional transmission means; a second interface means connected to a network for data communication; and further connected via the network. A digital device having a communication partner device and receiving data communication information from the communication partner device via the second interface, and then sending a directional signal to the first interface. A digital device which starts data communication with the communication partner device when the means receives it.   34. A network comprising a combination of digital devices of claim 33.   A digital apparatus having a main function realizing means and a receiving means for receiving a signal transmitted from a wirelessly directional transmitting means, wherein the receiving means receives the first and second signal states separately. And when the receiving means receives the second signal state and the first signal state again within a predetermined short time after receiving the first signal state, the main function realizing means A digital device characterized by performing a main function.   36. The output device according to claim 35, wherein the main function realizing means is information output means, and the main function is information output.   37. The display device according to claim 36, wherein the information output means is a display display means, and the information output as its main function is a display display.   37. The printing apparatus according to claim 36, wherein the information output means is a print output means, and the information output as its main function is printing.   36. The input device according to claim 35, wherein the main function realizing means is information input means, and the main function is information input.   40. A digital apparatus according to claim 39, wherein the information input means is camera photographing means, and the main function thereof is camera photographing.   36. The digital apparatus according to claim 35, wherein the main function realization means is information storage means, and the main function is information writing to the information storage means.   36. The storage device according to claim 35, wherein the main function realizing means is information storage means, and the main function is reading information from the information storage means.   36. The digital device according to claim 35, wherein the main function realizing means has a plurality of main functions, and executes first and second different functions of the plurality of functions by input to the receiving means. A digital device characterized by   44. The digital device of claim 43, wherein the receiving means receives the second signal state, again the first signal state, for a predetermined short time after receiving the first signal state. When the first main function of the main function realization means is executed, the second signal state, again the first signal state, again the second signal state, A digital apparatus which executes a second main function of a main function realization means when receiving one signal state.   45. The digital device according to claim 44, wherein the main function realizing means is camera photographing means, the first main function is still image photographing, and the second main function is moving image photographing start. An imaging device.   36. The digital device of claim 35, wherein the digital device has a plurality of function realization means and a plurality of main functions, and the first and second different functions of the plurality of functions by input to the receiving means. A digital device characterized in that:   47. The digital device of claim 46, wherein the receiving means receives the second signal state, again the first signal state, for a predetermined short time after receiving the first signal state. When the first main function of the main function realization means is executed, the second signal state, again the first signal state, again the second signal state, A digital apparatus which executes a second main function of a main function realization means when receiving one signal state.   48. The digital device according to claim 47, wherein the plurality of main function realizing means are camera photographing means, storage means, and display display means, and the first main function is camera photographing and information storage means for photographing information. A digital device characterized in that the second main function is display of stored information on a display means.   A digital device having a first interface means capable of wirelessly transmitting a directional signal, a second interface means capable of data communication, and a display means, which are designated by the directivity of the first interface A digital device characterized in that a function list that can be provided by a communication partner is obtained from the communication partner and displayed on the display means.   40. The scanner according to claim 39, wherein the information input means is a printed matter scanning means, and the main function is a printed matter scanning.

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