JP2002016896A - Display device and tv phone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device and a TV phone which can transmit the image of a talker captured by a camera along the natural line of sight of the camera to the talker on the other side. SOLUTION: A portable TV phone terminal 20 having a camera 11 is attached to the back of the display device 2 so that the center axis of the lens 11a of the camera 11 may become coincident with the horizontal or vertical center axis 2a of the device 2 and the lens 11a may be positioned on the outside of the peripheral edge section of the device 2. Consequently, the image of the talker can be made to coincide with the line of vision of the camera 11. The TV phone terminal 20 is electrically connected to the display device 2 and the image data received by means of the terminal 20 from the other side are displayed on the display 24 of the device 2. In addition, audio data are outputted from the loudspeaker 22 of the device 2. On the other hand, the voices of the talker are inputted from the microphone 23 of the device 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for enlarging and displaying a display screen of a portable communication terminal, and a videophone connected to a portable videophone terminal having an imaging function connectable to the display device.

[0002]

2. Description of the Related Art Conventionally, portable communication terminals have been considered to be used mainly for talking. However, in recent years, with a remarkable increase in data rates, not only voice data,
Image data can also be transmitted and received. For example,
A mobile communication terminal is provided with a camera, which enables a mobile videophone terminal to transmit its own face and surroundings along with voice data during a call, and to receive such image data from a call partner. Proposed.

However, in the portable videophone terminal described above, since portability is regarded as important, the size of a liquid crystal panel for display is limited. For this reason, the image projected on the liquid crystal panel must be small,
When used by an elderly person or when used on a desk, there is a problem that images are difficult to see and it is difficult to use. On the other hand, it has been proposed that the portable videophone terminal is connected to an external display device, and the display image of the portable videophone terminal is displayed on the external display device, thereby eliminating the above-mentioned difficulty in viewing the image. ing.

[0004]

However, when an image is displayed on the external display device, the caller talks while viewing the image of the other party displayed on the external display device.
The image of the caller picked up by the camera provided in the mobile videophone terminal is an image whose eyes are deviated, and a very unnatural image is transmitted to the other caller.

[0005] The present invention has been made in view of such circumstances, and an object of the present invention is to provide a display device and a videophone capable of transmitting a natural caller's image of a camera to a caller. To provide.

[0006]

In order to achieve the above object, the present invention is detachable from a portable communication terminal equipped with a camera, and the portable communication terminal displays image data received from another communication device. An image data input terminal to which the image data is input from the mobile communication terminal; a display screen for displaying an image input through the image data input terminal; The mobile communication terminal is mounted on the display device such that the center axis of the lens of the camera is aligned with the center axis in the horizontal direction or the vertical direction of the display screen, and the lens is located outside the periphery of the display device. And a mounting member to be mounted on the back surface.

According to the above configuration, the portable communication terminal having the camera is attached to the back of the display device, and the camera has a camera whose center axis is aligned with the center of the display device in the horizontal or vertical direction. Since it is arranged so as to coincide with the axis and the lens is located outside the peripheral portion of the display device, even if the caller is talking while looking at the display screen of the display device,
The captured image of the caller may be approximately looking at the camera.

Further, in the display device having the above-mentioned structure, the mounting member is arranged such that a lower edge portion of the lens of the portable communication terminal is close to a lower surface of an upper edge of the display device. According to the above configuration, the lens of the camera is placed closer to the caller's line of sight, so that the image of the caller captured by the camera can be an image of the camera's line of sight.

Further, the display device having the above configuration further includes a power supply terminal, and is capable of supplying power to the portable communication terminal in a state where the portable communication terminal is connected. According to the above configuration, the connection terminal (in the embodiment, the jack terminal 12) for connecting the display device and the portable communication terminal.
And the plug terminal 21) is provided with a power terminal in addition to the image data output terminal described above, so that the portable communication terminal can obtain power from this power terminal.

[0010] The display device having the above configuration has a speaker, a microphone, and an audio data input / output terminal for transmitting and receiving audio data to and from the portable communication terminal. The audio data output from the microphone is the audio data. The audio data output to the portable communication terminal via a data input / output terminal and the audio data input via the audio data input / output terminal are emitted by the speaker. According to the above configuration, it is possible to transmit and receive not only image data but also audio data between the mobile communication terminal and the display device, thereby displaying audio data received by the mobile communication terminal from another communication device. Since the sound can be emitted by a relatively large speaker provided in the device, the sound can be easily heard. In addition, since a microphone having relatively good sensitivity provided in the display device can be used as the microphone, it is not necessary to produce a loud voice.

A videophone comprising the display device according to any one of claims 1 to 4 connected to a camera and a portable communication terminal having an image communication function and connectable to the display device. The mobile communication terminal is a mobile videophone terminal having a so-called videophone function having a camera and an image communication function. By making this mobile videophone terminal detachable from the display device of the present invention, the situation at that time can be improved. In response, the user talks while viewing the image of the other party enlarged and displayed on the display device, or checks the state of the other party displayed on the display attached to the mobile communication terminal while carrying the mobile communication terminal. You can talk.

[0012] In the videophone, the portable communication terminal detects a connection state between the portable communication terminal and the display device, and outputs a detection signal corresponding to the detection result; Switching means for receiving a detection signal output from the device and switching output destinations of audio data and the image data to any of the units of the portable videophone terminal or each of the units of the display device based on the detection signal. It is characterized by.

According to the above configuration, it is detected whether or not the portable communication terminal is connected to the external display device, and the speaker, the microphone, and the display are switched according to the connection status. Need not be done manually. Therefore, the image can be displayed on the display screen of the display device only by inserting the mobile communication terminal into the mounting member provided on the back surface of the display device. It can be used as a mobile communication terminal without making any changes.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an external view of a videophone according to an embodiment of the present invention. As shown in the figure, the videophone according to the present embodiment includes a mobile TV communication terminal 20 and a display device 2 for enlarging and displaying an image received by the mobile TV communication terminal 20. Here, the configuration and operation of the portable TV communication terminal 20 which is a component of the videophone of the present invention will be described with reference to the drawings.

First, a perspective view of the portable television communication terminal 20 according to the present embodiment is shown in FIG. As shown in this figure, a portable videophone terminal 20 has a display (image display means) 30 made of a liquid crystal plate on the front of the terminal body.
It has. This display 30 has a telephone number,
Both or one of the communication function information and the image information in the mobile phone device such as the electric field pictogram are displayed.

The terminal body is provided with a camera 11 on an upper front side thereof, and an image is taken by the camera 11. Further, a plurality of operation keys 14 are provided below the display 30, and when these keys 14 are pressed,
Various operations can be performed.

For example, the keys 14a and 14b are hook switches.
When the key 14b is pressed, the user goes on-hook.

The terminal body has a camera 1 at its upper part.
A speaker 31 is provided on the side of the speaker 1 and a microphone 32 is provided below the speaker 31. Voice input is performed by the microphone 32, and the other party's voice, ringtone, alarm, and the like are emitted from the speaker 31. ing. An extendable antenna 13 is provided at the upper end of the terminal body, and a built-in wireless unit (not shown in FIG.
The communication of image data and audio data is performed via the. Further, a jack terminal 12 for communicating an external display device and audio data and image data with the external device is provided at a lower end of the terminal body.

Next, a videophone according to an embodiment of the present invention will be described. FIG. 1 is a perspective view of the videophone according to the embodiment, and FIG. 2 is a cross-sectional view of the videophone according to the embodiment. As can be seen from the figure, the videophone in the present embodiment has a configuration in which the portable videophone terminal 20 is housed in the display device 2.

As shown in FIG. 1, a liquid crystal display 24 (hereinafter abbreviated as a display) for enlarging and displaying image data transmitted from the portable videophone terminal 20 is provided on the surface of the main body of the display device 2. A speaker 22 that emits audio data transmitted from the speaker 20 is provided below the left and right sides of the display device main body, and a microphone 23 that receives a user's voice is provided above the display device surface. And
At the lower end of the display device, a stand 3 for supporting the display device main body along the axis of the central axis 2a of the display 24.
5 are provided.

As shown in FIG. 2, a plug 80 for obtaining a power supply for operating the present device is provided on the back of the display device 2.
And storage section 2 for storing portable videophone terminal 20
6 are provided. The storage unit 26 is provided with the lens 11a (see FIG. 1) of the portable videophone terminal 20 provided above the upper end surface 2c of the display device 2, and the lower end of the lens 11a of the portable videophone terminal compatible display device 50 as much as possible. The portable videophone terminal 20 is housed so as to be close to the upper end face 2c. Further, the storage section 26 is configured to store the mobile videophone end 20 such that the central axis 11b of the lens 11a of the mobile videophone terminal 20 and the central axis 2a of the display device 2 match.

As shown in FIG. 2, the jack terminal 12 of the portable videophone terminal 20 is
The portable videophone terminal 20 and the display device 2 are electrically connected by connecting the jack terminal 12 and the plug terminal 21 to perform transmission and reception of data. Becomes possible. Specifically, each of the jack terminal 12 and the plug terminal 21 has five contacts including a power supply terminal portion, a ground terminal portion, an audio data terminal portion, an image data terminal portion, and a clock data terminal portion. By connecting each other, bidirectional data communication becomes possible, and in addition, the portable videophone terminal 20 can receive power supply from the display device 2. Thus, when the portable videophone terminal 20 is not operating, the display device 2 can be used like a charger.

Next, the internal configuration, functions and operations of the videophone according to this embodiment will be described with reference to FIG. FIG. 4 is a block diagram illustrating the internal configuration of the videophone according to the present embodiment. In the figure, reference numeral 73 denotes a CPU for controlling the entire terminal, and reference numeral 74 denotes a memory for storing various data. This memory 74
In addition to the control program, information for specifying the other party to whom the automatic answering call is permitted (hereinafter, referred to as a password).
And image data input from the outside.

First, when the portable videophone terminal 20 is not electrically connected to the display device 2 (normal display mode)
, Data communication with the outside, that is, transmission and reception of audio data and image data will be described. In this case, since the jack terminal 12 of the portable videophone terminal 20 and the plug terminal 21 of the display device 2 are not connected, the connection detecting unit 6
Reference numeral 6 outputs an "L (low)" detection signal Sg to the signal switching units 67, 68a, and 68b. As a result, the signal switching units 67, 68a, and 68b select a connection destination indicated by a solid line in FIG. That is, the signal switching unit 67 sets the connection destination to the liquid crystal driver 69, the signal switching unit 68a sets the connection destination to the A / D conversion unit 70, and the signal switching unit 68b sets the connection destination to the D / A conversion unit 7.
Let it be 1.

<< Normal Display Mode >><Transmission> First, a case where image data and audio data are transmitted to the outside in the normal display mode will be described. The following description is an operation after the connection with the outside is completed.

First, an image picked up by the camera 11 is encoded by an image codec 63,
Sent to On the other hand, the voice input by the microphone 32 is A
After being converted into a digital signal by the / D (analog / digital) conversion section 70, the signal is transmitted to the audio codec 65 via the signal switching section 68a, where it is encoded and transmitted to the multiplexing / demultiplexing circuit 64.

The multiplexing / demultiplexing circuit 64 multiplexes the image data from the image codec 63 and the audio data from the audio codec 65. The multiplexed data obtained by multiplexing the image data and the audio data is transmitted to the time division multiplexing circuit 62 and transmitted from the antenna 13 via the radio unit 61.

<Reception> Next, a case where the portable videophone terminal 20 receives multiplexed data via the antenna 13 will be described. The multiplexed data received by the antenna 13 is sent to a multiplexing / demultiplexing circuit 64 via a radio unit 61 and a time division multiplexing circuit 62, where it is separated into image data and audio data.

The separated image data is decoded by the image codec 63 and output to the liquid crystal driver 69 via the signal switching section 67. The liquid crystal driver 69 displays an image on the display 30 by driving based on the image data. On the other hand, the separated audio data is decoded by the audio codec 65, sent to the D / A conversion unit 71 via the signal switching unit 68b, and converted into an analog signal. The speaker 31 emits sound based on this analog signal.

Next, when the portable videophone terminal 20 is stored in the storage section 26 of the display device 2 and the jack terminal 12 and the plug terminal 21 are connected to each other to electrically connect them (enlarged display mode). ) Will be described. In this case, the connection detection unit 66 in the portable videophone terminal 20 detects the connection between the jack terminal 12 and the plug terminal 21 and sends the "H (high)" detection signal Sg to the signal switching units 67, 68a, and 68b. Output. Thereby, the signal switching units 67, 68a and 68b
Selects the connection destination indicated by the dotted line. That is, the signal switching unit 6
Reference numeral 7 denotes an output destination of the image data from the liquid crystal driver
Switch to F section 72. The signal switching unit 68 switches the connection destination from the A / D conversion unit 70 to the I / F unit 72. Further, the signal switching unit 68b sets the connection destination to the D / A conversion unit 7
1 to the I / F unit 72.

<< Enlarged Display Mode >><Transmission> First, a case where image data and audio data are transmitted to the outside in the enlarged display mode will be described. The following description is an operation after the connection with the outside is completed.

First, an image picked up by the camera 11 is encoded by an image codec 63, and a multiplexing / demultiplexing circuit 64 is provided.
Sent to On the other hand, the sound input by the microphone 23 of the display device 2 is converted into a digital signal by the A / D conversion unit 52, and then the I / F unit 51, the plug terminal 21, the jack terminal 12, the I / F unit 72, The signal is transmitted to the audio codec 65 via the signal switching unit 68a. The input audio data is encoded here and sent to the multiplexing / demultiplexing circuit 64.

The multiplexing / demultiplexing circuit 64 multiplexes the image data from the image codec 63 and the audio data from the audio codec 65. The multiplexed data obtained by multiplexing the image data and the audio data is transmitted to the time division multiplexing circuit 62 and transmitted from the antenna 13 via the radio unit 61.

<Reception> Next, a case where the portable videophone terminal 20 receives multiplexed data via the antenna 13 will be described. The multiplexed data received by the antenna 13 is sent to a multiplexing / demultiplexing circuit 64 via a radio unit 61 and a time division multiplexing circuit 62, where it is separated into image data and audio data.

The separated image data is decoded by the image codec 63, and is sent to the I / F unit 7 via the signal switching unit 67.
2, the jack terminal 12, the plug terminal 21, I
It is output to the liquid crystal driver 53 in the display device 2 via the / F unit 51. The liquid crystal driver 53 displays an image on the display 24 by driving based on the input image data. On the other hand, the separated audio data is decoded by the audio codec 65, output to the I / F unit 72 via the signal switching unit 68b, and further via the jack terminal 12, the plug terminal 21, and the I / F unit 51. D in the display device 2
/ A conversion unit 54. The D / A converter 54 converts the input digital audio data into an analog signal, and the speaker 22 emits sound based on the analog signal.

As a result, the audio data received by the portable videophone terminal 20 is emitted from the speaker 22 of the display device 2 and the image data is displayed on the display 24 of the display device 2. The received image can be viewed on the large display of the device 2 and the received sound can be heard with a loud sound. Also, the lens 11 of the camera 11 of the portable videophone terminal 20
Since a is provided at a position where the caller can be photographed by looking at the camera, it is possible to capture a natural caller's image and transmit it to the other party.

It is to be noted that the portable videophone terminal 20 in the present embodiment is provided with a key capable of switching the call mode to any one of a voice-only voice mode, an image-only image mode, and an image & voice VP mode. Thus, the call mode may be switched according to the use situation. The embodiments described above are merely examples for describing the present invention, and the present invention is not limited to the above embodiments, and various modifications are possible within the scope of the invention. .

[0038]

As described above, according to the display device of the present invention, the portable communication terminal having the camera is attached to the back of the display device. Since the lens is disposed so as to coincide with the central axis in the horizontal or vertical direction of the display device and the lens is located outside the peripheral portion of the display device, the caller can display the display screen of the display device. Even if you are talking while watching the call, the image of the caller can be taken almost from the camera, so you can send a natural caller's image to the caller, as if you were actually facing This has the effect of providing a feeling of having a conversation.

Further, in the above display device, since the lens of the camera is set closer to the line of sight of the caller, the image of the caller captured by the camera can be an image of the line of sight of the camera. There is an effect that the caller can enjoy the call more naturally.

In the above display device, a power supply terminal is further provided, and power can be supplied to the portable communication terminal in a state where the portable communication terminal is connected. The effect that it can be used also as a charger is obtained.

In addition, not only image data but also audio data can be transmitted and received between the portable communication terminal and the display device, so that audio data received by the portable communication terminal from another communication device is provided on the display device. Since the sound can be emitted by a relatively large speaker, even if the caller is sitting a little away and talking, the sound of the other party can be accurately heard. In addition, since a microphone having relatively high sensitivity provided in the display device can be used as the microphone, there is an effect that the caller does not need to utter a loud voice and can enjoy conversation naturally.

Further, according to the videophone of the present invention, the portable videophone terminal can be detachably attached to the display device, so that the image of the other party enlarged and displayed on the display device can be displayed according to the situation at that time. Call while watching, or
Since the user can talk while checking the state of the other party displayed on the display attached to the mobile communication terminal while carrying the mobile communication terminal, a highly convenient videophone can be provided.

Further, in the videophone, it is detected whether or not the portable communication terminal is connected to an external display device, and the speaker, the microphone, and the display are switched according to the connection status. No need to switch manually. Therefore, the image can be displayed on the display screen of the display device only by inserting the mobile communication terminal into the mounting member provided on the back surface of the display device. You can use it as a mobile device without making any changes,
An advantage is obtained that any user can easily operate without troublesome operation of the user.

[Brief description of the drawings]

FIG. 1 is a perspective view of a videophone according to an embodiment of the present invention.

FIG. 2 is a sectional view of the videophone according to the embodiment.

FIG. 3 is a perspective view of the mobile videophone terminal in the embodiment.

FIG. 4 is a block diagram showing an internal configuration of the videophone in the embodiment.

[Explanation of symbols]

 Reference Signs List 2 display device 2a central axis of display device 11 camera 11a lens 11b central axis of lens 12 jack terminal 20 portable videophone terminal 21 plug terminal 22, 31 speaker 23, 32 microphone 24, 30 display 26 storage unit (mounting member)

Claims (6)

[Claims] 1. A display device that is detachably attached to a portable communication terminal equipped with a camera and displays image data received by the portable communication terminal from another communication device, wherein the image data is transmitted from the portable communication terminal. An image data input terminal to be input, a display screen for displaying an image input through the image data input terminal, and a center axis of a camera lens of the mobile communication terminal,
A mounting member for mounting the portable communication terminal on the back surface of the display device so that the display screen is aligned with a central axis in a horizontal direction or a vertical direction, and the lens is located outside a peripheral portion of the display device. A display device comprising: 2. The display device according to claim 1, wherein the mounting member arranges a lower edge portion of the lens of the portable communication terminal close to a lower surface of an upper edge of the display device. 3. The mobile communication terminal according to claim 1, further comprising a power supply terminal, wherein power can be supplied to the mobile communication terminal in a state where the mobile communication terminal is connected. Display device. 4. A speaker, a microphone, and an audio data input / output terminal for transmitting and receiving audio data to and from the portable communication terminal, wherein audio data output from the microphone is transmitted through the audio data input / output terminal. The audio data output to the portable communication terminal through the audio data input / output terminal and emitted by the speaker. The display device according to claim 1. 5. A display device comprising: a display device according to claim 1; and a mobile communication terminal having a camera and an image communication function and connectable to the display device. Videophone. 6. A detecting means for detecting a connection status between the mobile communication terminal and the display device, and outputting a detection signal corresponding to the detection result, and detecting the detection output from the detecting means. A switching unit that receives a signal and switches the output destination of the audio data and the image data to any of the units of the portable videophone terminal or each of the units of the display device based on the detection signal. The videophone according to claim 5.