JPH06125551A - Cordless television telephone system - Google Patents

Abstract

PURPOSE:To enable the recognition of a received mode by only a slave machine even if a user does not go purposely to the place of a device main body by providing a means notifying a received mode also by a handset separated from the device main body. CONSTITUTION:A cordless television telephone system 1 is composed of a device main body 2, a handset 3, a monitor television 4 and a video camera 5, and the transmission of the control signal between the device main body 2 and the handset 3 is executed via radio wave. By taking the operation convenience into consideration, not only image information but also character/symbol information can be displayed in multiplexing way on the screen of a monitor television 4, and the classification of a voice calling mode or a television telephone mode can be discriminated by the lighting color of an indicator, melody and the screen display of a monitor television.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless videophone device.

[0002]

2. Description of the Related Art In a videophone device having a video camera, a monitor TV, a handset, etc., it is necessary for the user to be in front of the video camera, monitor TV. It is common to communicate. Therefore, it is common that the device body and the handset are connected by an electric wire. Further, although the videophone device has a videophone mode of image + voice and a voice call mode of voice only, it is possible to identify this by using some means when receiving a call. Also, in the case of a voice telephone device, the device body and the handset are separated,
Cordless phones that use a handset as a handset are in widespread use. In the case of a cordless phone, it is common to transmit control signals and voice signals between the device body and the handset via radio waves, but since these have only one voice mode, the call reception mode from the device body There was no control to send to the handset.

[0003]

However, when the main body of the videophone device is separated from the video camera and the monitor TV, the user does not need to go to the main body of the device, so that the main body of the device and the handset. Can be separated and the handset can be used as a slave. In normal usage, the cordless handset is placed near the user, away from the body of the device. When a call is received, if the received call is in the voice call mode, it is not necessary to bother to go to the video camera or the monitor TV, and the call can be made using only the handset at hand. However, in the case where only the device main body has means for notifying whether the incoming call is in the voice call mode or the videophone mode, it is necessary to go to the device main body, which is inconvenient.

The present invention has been made in view of the above-mentioned conventional problems, and a handset (slave unit) separated from the main body of the apparatus has a means for informing the received mode, and the user bothers to do so. Even if you don't go to the body,
An object of the present invention is to provide a cordless videophone device capable of recognizing a mode received by only a child device.

[0005]

In order to achieve the above object, a cordless video telephone apparatus of the present invention sends a control signal indicating a received mode from a main body of the apparatus to a handset, and also a display unit in the handset. Lights up,
The melody generator has means for informing the reception mode by changing the melody or the like generated by the melody generator so that the mode received by only the handset can be identified.

[0006]

When the device body receives a call, the device body wirelessly sends a control signal indicating the received mode to the handset. The handset separated from the main body of the device received a wireless control signal, analyzed the content of the received control signal, and received the indicator lighting of the handset, the melody generated by the melody generator, etc. Depending on the mode, the user is informed by lighting, blinking, or ringing. As a result, the user can distinguish between the voice call mode and the videophone mode only by the handset in the vicinity without going near the apparatus body.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cordless videophone device of the present invention will be described with reference to the drawings. As shown in FIG. 1, a cordless videophone device 1 of the present invention comprises a device body 2, a handset 3, a monitor TV 4, and a video camera 5.

The apparatus main body 2 executes connection with a communication network, transmission / reception of voice / image signals, processing, etc.
As shown in FIG. 1, it comprises a control unit 6, a communication unit 7, a radio unit 8, and a power feeding unit 9.

The control unit 6, as shown in FIGS. 1 and 2,
An image codec and a central processing unit (CPU) 10 are the core, and a network interface 11, a modem 12, a display unit 13, a temporary data storage ROM 14, and a superimposing circuit 15 are connected to the core.

The image codec and the CPU 10 are IS
The audio / image signals transmitted via the DN network (service integrated digital network), the voice and command signals transmitted from the handset 3, or the image signals transmitted from the video camera 5 are temporarily de-selected. Data is separated and analyzed according to the program stored in the data storage ROM 14 to generate a predetermined signal, and the voice / image signal is transmitted through the ISDN network to transmit the voice signal to the handset 3 and the image signal to the monitor TV 4. send. It also sends a predetermined command signal to the display unit 13, the superimposing circuit 15, and the like. Furthermore, C
The PU 10 is connected to a melody generator, and when set in a voice call mode or a videophone mode as described later, the melody generator outputs a different melody corresponding to each mode. It is configured to generate.

The network interface 11 is for connecting the ISDN line network and the apparatus main body 2, and the CPU 10
It operates according to the connection or disconnection command from the ISDN line network and the call command from the other party. The modem 12 modulates a control signal output from the CPU 10 to modulate the call section 7
The control signal is taken out from the amplifier 22 of the communication section 7, demodulated and input to the CPU 10. The temporary data storage ROM 14 stores the operation program of the apparatus main body 2 and the like.

The display unit 13 is composed of a display device composed of various LEDs for displaying the operating state of the apparatus main body 2,
Do "indicator is included. When the voice call mode or the videophone mode is set as will be described later, the "mode" display has a different color (for example, voice call mode) corresponding to each mode. In case of, red, videophone mode
When it's turned off, green) comes on.

The superimposing circuit 15 is for superimposing and displaying the character / symbol information together with the video information on the screen of the monitor television 4, and as shown in FIG. 3, the superimposer 17 and the P / S converter are provided. (Parallel / serial converter) 18, Kanji ROM 19, etc. The superimposer 17 has a program ROM storing a control program, a work RAM for data processing, and the like, receives a command signal from the CPU 10 as a serial signal via the P / S converter 18, and receives a command from the Kanji ROM 19 as necessary. After taking out the data and performing the prescribed processing,
Output as symbol information.

The character / symbol information signal such as the other party's station number transmitted together with the image signal from the communication partner, and the command signal transmitted from the handset 3 are analyzed by the CPU 10, and the superimposer-17 is transmitted from the CPU 10. By reading out predetermined character / symbol information from the program ROM and the Chinese character ROM according to the received command signal, the character / symbol information is superimposed and displayed on the screen of the monitor television 4 together with the image information.

The call section 7 comprises a voice codec 20, an eavesdropping prevention circuit 21, and a transmission / reception amplifier 22.
The digital voice signal sent from the CPU 10 is subjected to signal expansion and analog conversion in the voice codec 20. Next, the wiretapping prevention circuit 21 performs encryption, the signal is amplified by the transmission / reception amplifier 22, and the wireless unit 8
Sent to. On the contrary, the voice signal sent from the wireless unit 8 is amplified by the transmission / reception amplifier 22, and the wiretapping prevention circuit 21 decrypts the code. Then, in the voice codec 20, signal compression and digital conversion are performed and the result is sent to the CPU 10.

The radio section 8 includes a transmitting / receiving section 23 and an antenna 2.
The transmitter / receiver 23 multiplexes the voice signal and the command signal sent from the controller 6 and the caller 7 and transmits them as radio waves from the antenna 24, and the radio waves from the handset 3 are transmitted by the antenna 24. The reception / transmission unit 23 receives and separates into a voice signal and a command signal and sends them to the control unit 6 and the communication unit 7.

The power supply section 9 is composed of a power supply circuit 26 and supplies a voltage to each section of the apparatus main body 2.

The handset 3 executes transmission / reception of voice signals, remote control of the main body of the apparatus, etc. As shown in FIG. 4, the handset 3 has a radio section 31, a call section 32, a control section 33, and an operation / control section.
The display unit 34 and the battery unit 35 are included.

The radio section 31 is composed of a transmission / reception section 36 and an antenna 37. The radio wave transmitted from the apparatus main body 2 is received by the antenna 37 and separated in the transmission / reception section 36 into a voice signal and a command signal. In addition, the transmission / reception unit 36 multiplexes the voice signal and the command signal sent from the control unit 33 and the communication unit 32, and transmits them as radio waves from the antenna 37.

The call section 32 comprises a transmission / reception amplifier 38, an eavesdropping prevention circuit 39, an expander / compressor 40, a transmission / reception amplifier 41, a reception handset 41, and a transmission handset 42. The voice signal sent from the wireless unit 31 is amplified by the transmission / reception amplifier 38, and the wiretapping prevention circuit 39 deciphers the code. Then expander /
The signal is expanded in the compressor 40, further amplified by the transmitter / receiver amplifier 41, and output as voice from the receiver 41. On the contrary, the voice signal input to the transmitter 42 is amplified by the transmitter / receiver amplifier 41 and compressed by the expander / compressor 40. Next, the wiretapping prevention circuit 39 performs encryption, the signal is further amplified by the transmission / reception amplifier 38, and the signal is sent to the wireless unit 31.

The control unit 33 includes a central processing unit (CPU) 4
3 is the core, and a modem 44, a temporary data storage RO
It is configured by connecting an M45, a battery-saving circuit 46, and the like.

The CPU 43 separates and analyzes a button input signal from the operation / display unit 34, a voice and a command signal sent from the apparatus main body 2 in accordance with a program stored in the temporary data storage ROM 45, and predetermined. The signal is generated and sent to the wireless unit 31, the operation / display unit 34, and the call unit 32.

The modem 44 modulates the command signal output from the CPU 43 and sends it to the transmitting / receiving unit 36 of the radio unit 31, and also takes out the command signal from the transmitting / receiving unit 36, demodulates it, and inputs it to the CPU 43.

The operation / display unit 34 is composed of various operation buttons for inputting a command signal and a display device including various LEDs for displaying the operating state. By the input signal from the operation button of the operation / display unit 34, the CPU 4 of the control unit 33
Various command signals are generated in 3 and modulated in the modem 44, then multiplexed with a voice signal in the transmission / reception unit 36 of the wireless unit 31 and transmitted as a radio wave from the antenna 37. Further, various command signals transmitted together with the voice signal are separated from the voice signal in the transmission / reception unit 36 of the radio unit 31 and demodulated in the modem 44, and then the control unit 3
It is analyzed by the CPU 43 of No. 3 and the indicator of the operation / display unit 34 is turned on by the command signal from the CPU 43.

The battery unit 35 is composed of a rechargeable storage battery, and the CPU 4 is connected via a battery-saving circuit 46.
3, voltage is supplied to the transmission / reception amplifier 38, the transmission / reception amplifier 41, and the like.

The monitor television 4 displays the image of the other party transmitted through the ISDN line network on the screen (CRT), and the video camera 5 inputs its own image as a video signal. is there.

As described above, the apparatus main body 2 and the handset 3 are connected by the analog radio transmission using the microwave band, and the voice signal and the command signal are superimposed on the radio wave to mutually perform the radio transmission.

Next, the operation method and operation of the cordless video telephone apparatus 1 of the present invention will be described with reference to the external front view of one embodiment of the handset 3 shown in FIG. The handset 3 is provided with an antenna 37 on the right end of the upper surface, a power switch 51 on the upper right side, and an operation / display unit 34 between the receiver 41 and the transmitter 42. The operation / display unit 34 is composed of operation buttons arranged on the operation / display panel 52 and an LED display, and the operation buttons include a control button group 53, a special function button group 54, and a numeric keypad group 55. It is configured.

When the power switch of the device main body 2 is turned on and the power switch 51 of the handset 3 is turned on, a call is possible, and the "power" indicator of the handset 3 lights up. Here, when the "voice" button of the control button group 53 is pressed, it becomes possible to send and receive in a voice call mode using only voice without displaying an image on the monitor TV 4, and the "voice" button integrated with the "voice" button The indicator lights up.
On the other hand, when the "image" button is pressed, it becomes possible to send and receive in a videophone mode in which a voice call can be made while displaying an image on the monitor TV 4, and the "image" display united with the "image" button lights up. The "voice" or "image" indicator lights according to the flow chart shown in FIG. The case of transmitting and receiving in the videophone mode will be described below.

To make a call from me, press the "image" button and press the other party's telephone number with the numeric keypad button group 55 ("0" to "9" and "*", "#") to set the handset. In 3, the CPU 43 of the control unit 33 generates a command signal for "set to the videophone mode" or "connect the line", and the command signal is transmitted to the wireless unit 31 and transmitted as a radio wave from the antenna 37. In the apparatus main body 2, this radio wave is received by the antenna 24 of the wireless unit 8 and is sent as a command signal to the CPU 10 of the control unit 6, and thereafter, a videophone mode in which images can be transmitted and received is set and the CPU 1
A command signal is sent from 0 to the network interface 11, the line is connected, and the other party can be called and a call can be started. Also, the call partner is registered in advance, and the "phone book" button of the special function button group 54 is pressed,
The other party can also be called by pressing the registration number with the ten key button group 55.

Then, when the "communication" button is pressed, in the handset 3, the CPU 43 of the control unit 33 generates a command signal "transmit image", which is sent to the wireless unit 31 and transmitted as radio waves from the antenna 37. To be done. In the apparatus main body 2, this radio wave is received by the antenna 24 of the wireless unit 8, is sent as a command signal to the CPU 10 of the control unit 6, and the image signal of this side is input from the video camera 5,
It is multiplexed with the voice signal sent from the voice codec 20 of the call section 7 and transmitted to the other party as a voice / image signal via the ISDN network. At this time, the "communication" indicator integrated with the "communication" button lights up.

When a voice / image signal is transmitted from the other party via the ISDN line network, the network interface 1
1, a voice / image signal is sent to the CPU 10 of the control unit 6 of the apparatus main body 2, separated and analyzed by the CPU 10,
An image signal is sent to the monitor television 4 to display the image of the other party on the screen. On the other hand, the voice signal is transmitted as a radio wave from the antenna 24 of the wireless unit 8 via the call unit 7 of the device body 2, received by the antenna 37 of the wireless unit 31 of the handset 3, and as a voice from the handset 41 of the call unit 32. Is output.

Although the case of making a call from me has been described above, an image can be transmitted and received by the same operation when a call is received from the other party. When an incoming call arrives, the "incoming call" indicator of the handset 3 blinks.

When the "voice" button is pressed, in the handset 3, the CPU 43 of the control unit 33 generates a command signal "Set to voice communication mode", which is sent to the wireless unit 31 and is transmitted as radio waves from the antenna 37. Sent. In the apparatus main body 2, this radio wave is received by the antenna 24 of the wireless unit 8 and is sent as a command signal to the CPU 10 of the control unit 6, and thereafter, a voice call mode in which only voice can be transmitted and received is set.

Next, regarding the superimpose display,
This will be described with reference to the screen display of the monitor television 4. S-
The change of the power-on-poise display can be performed by pressing the "expansion / registration" button of the special function button group 54 arranged on the operation / display panel 52.

When the "expansion / registration" button is pressed, a command signal "change superimpose display" is generated in the CPU 43 of the control unit 33 in the handset 3 and sent to the wireless unit 31. And transmitted as a radio wave from the antenna 37. In the device body 2, the antenna 24 of the wireless unit 8
This radio wave is received by and is sent to the CPU 10 of the control unit 6 as a command signal, which causes the CPU 10 to super-import.
By sending a command signal to the zoom circuit 15, it is possible to change the super-impose display. At this time, on the screen of the monitor television 4, as shown in FIG. 6, items such as information display and setting display are displayed as a menu, and the numeric keys corresponding to the numbers or symbols of the respective items are pressed to display the respective items. Items can be selected.

For example, if the ten key button "1" is pressed, a screen for displaying the accumulated charge is displayed as shown in FIG. 7, and "2" is displayed.
When is pressed, a screen for setting the holding voice of the monitor TV 4, the voice call voice, the video call voice, and the like is displayed as shown in FIG. If "7" is pressed, the screen for displaying the incoming call record is displayed as shown in FIG. 9, and if "8" is pressed, the screen shown in FIG.
As shown in 0, the screen for displaying the outgoing call record is displayed.

By pressing the "image receiving / erasing" button in the special function button group 54 in the videophone mode, an image can be displayed on the screen of the monitor television 4 or erased. When the image is erased, the screen of the monitor TV 4 becomes a bull-back display screen,
Only symbol information can be displayed.

In addition, the "redial", "sub-address", "hold" button and the like have the same functions as those provided in the handset of the conventional cordless videophone device.

[0040]

The cordless videophone device of the present invention comprises:
The control signal indicating the mode received from the device body is sent to the handset, and the handset changes the display mode, the melody generated by the melody generator, etc. according to the received mode, and the user can make a voice only with the handset. It is possible to distinguish between the call mode and the videophone mode.

[Brief description of drawings]

FIG. 1 is a schematic circuit configuration diagram of a cordless videophone device of the present invention.

FIG. 2 is a circuit configuration diagram of an apparatus main body.

FIG. 3 is a configuration diagram of a super-impose circuit.

FIG. 4 is a circuit configuration diagram of a handset.

FIG. 5 is an external front view of the handset.

FIG. 6 is a diagram showing a menu display screen of a monitor television.

FIG. 7 is a diagram showing various information or setting display screens of a monitor television.

FIG. 8 is a diagram showing various information or setting display screens of a monitor television.

FIG. 9 is a diagram showing various information or setting display screens of a monitor television.

FIG. 10 is a diagram showing various information or setting display screens of a monitor television.

FIG. 11 is a flowchart showing a reception mode display.

[Explanation of symbols]

 1 cordless telephone device 2 device body 3 handset 4 monitor TV 5 video camera 6 control unit 7 call unit 8 radio unit 15 superimpose circuit 31 radio unit 32 call unit 33 control unit 34 operation / display unit

Front page continued (72) Inventor Hiroshi Suzuki 7-5 Minami-Aoyama, Minato-ku, Tokyo G-C Technology Co., Ltd. (72) Ryuji Nishito 7-7-5 Minami-Aoyama, Minato-ku, Tokyo G- C-Technology Co., Ltd. (72) Inventor Hiroyuki Matsui 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Japan Telegraph and Telephone Corporation (72) Inventor Yasuhiro Tomita 1-1-6 Uchisaiwai-cho, Chiyoda-ku, Tokyo This telegraph telephone company (72) Inventor Hisashi Ibaraki 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Japan Telegraph telephone company (72) Inventor ▲ Ren ▼ Naoya 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo No. Japan Telegraph and Telephone Corporation

Claims (1)

[Claims] 1. An apparatus main body, a handset, a monitor TV, and a video camera, which are used to transmit control signals and audio signals between the apparatus main body and the handset via radio waves, Having a superimpose circuit in the apparatus body capable of displaying character / symbol information together with image information on the screen, and being in a voice call mode or a videophone mode in the apparatus body,
In a cordless videophone device that can be notified by lighting a display, a melody generated by a melody generator, or a display on a screen of a monitor TV, a voice call mode or a videophone mode is identified from the device body to the handset. A cordless videophone device, characterized in that the handset also has means for transmitting a control signal for controlling and a means for notifying the voice call mode or the videophone mode.