JPH04239284A - Television telephone - Google Patents

Abstract

PURPOSE:To allow a speaker to talk while looking at a television camera even at the time of moving, without noticing the position of a television main body and a master device by detecting the position direction of a slave device after receiving a telephone transmitted by the slave device, and making the television camera face to the direction of the slave device by the master device. CONSTITUTION:A receiver 16 is equipped with two antennas, the deviation of a phase generated by the position direction of the slave device is detected by a direction detecting part 17, the direction of a slave device 20 is judged by an integration circuit, and communicated to a camera driving part 18 in order to control the driving. The camera driving part 18 makes a television camera 14 face to the position direction of the slave device 20 after receiving the control from the direction detecting part 17 by a stepping motor.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video telephone that specifies a connection destination by dialing and transmits and receives voices, and also transmits and receives images of the other party using a television camera and an image display.

0002

[Prior Art] Conventionally, in this type of videophone, the end of the cord of a telephone handset equipped with a handset was directly connected to the telephone body, and images taken by a semi-fixed television camera were transmitted to the connected party. .

0003

[Problems to be Solved by the Invention] The above-mentioned conventional videophone has a structure in which the cord of the telephone handset equipped with the handset is directly connected to the telephone body, so the speaker can only move within the length of the cord. Another disadvantage is that images can only be taken within the field of view of the television camera, and if the speaker moves, the direction of the television camera must be manually changed in the direction of the speaker's movement.

[0004] An object of the present invention is to provide a telephone handset equipped with a handset as a slave unit, a television camera as a base unit,
To provide a videophone that eliminates the above-mentioned drawbacks by detecting the source direction of a radio signal exchanged between a base unit and a slave unit and directing a television camera in the detected direction.

[0005]

[Means for Solving the Problems] The basic configuration of the videophone according to the present invention includes a handset equipped with a handset and a receiver that transmits and receives audio using wireless signals, a television camera, and a screen display unit that takes images of the camera. and a base unit that detects the positional direction of the transmitting slave unit when receiving a radio signal transmitted by the slave unit, and aligns the imaging direction of the television camera with the detected direction.

[0006] Also, one specific configuration of the base unit described in the above basic configuration includes a screen display unit that displays an image signal received from the office line on the screen, and a screen display unit that displays the audio signal received from the office line wirelessly. a television camera that converts the photographed screen into an image signal and transmits it to the station line; a receiver that wirelessly receives the audio signal from the slave unit; and a position direction of the transmitter slave unit. and a camera drive unit that aligns the imaging direction of the television camera with the detected direction.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. As shown in the figure, a base unit 10 connected to a central office line sends and receives signals to and from a slave unit 20 using wireless signals.

[0009] The base unit 10 includes a receiving device 11, a transmitting device 12,
It has a screen display section 13, a television camera 14, a transmitting section 15, a receiving section 16, a direction detecting section 17, and a camera driving section 18.

The handset 20 has a receiving section 21, a speaker 22, a microphone 23, and a transmitting section 24.

[0011] The receiving device 11 receives an audio signal and an image signal from a television camera from the other party via a central office line. The image signal is sent to a screen display unit 13, typically a cathode ray tube, etc.
will be displayed. The audio signal is transmitted from the antenna of the transmitter 15 to the handset 20.

The transmitting device 12 forms the screen shot by the television camera 14 into an image signal and transmits it to the other party via the central office line, and also transmits the audio signal received wirelessly by the receiver 16 from the handset 20 to the other party. Send to.

The receiving section 16 includes two antennas, and the direction detecting section 17 receives the phase shift caused by the directional position of the handset between the two antennas, and determines the direction of the handset using an integrating circuit. , and controls the drive by notifying the camera drive unit 18. The camera drive section 18 receives control from the direction detection section 17 using, for example, a stepping motor, and directs the television camera in the direction of the position where the slave device is located.

[0014] The receiving section 21 receives the audio signal by radio waves from the transmitting section 15, converts it into a current, and drives the speaker 22 or the receiver. On the other hand, the microphone 23 or the transmitter converts the input voice into an electrical signal, and transmits the electrical signal from the transmitter 24 as a radio wave.

[0015]

Effects of the Invention As explained above, the videophone of the present invention is equipped with a handset that is connected via a wireless line by separating the handset from the handset, so that the handset receives the radio waves emitted by the handset, By detecting the camera and pointing the TV camera in the direction of the handset, the speaker can look at the TV camera and talk while moving, without having to be aware of the location of the videophone or base unit. There is.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram showing an embodiment of a videophone according to the present invention.

[Explanation of symbols]

10 Base unit 13 Screen display section 14 TV camera 15, 24 Transmission section 16, 21 Receiving section 17 Direction detection section 18 Camera drive unit 20　　　Slave device 22 Speaker 23 Microphone

Claims (2)

[Claims] [Claim 1] A handset equipped with a handset and a receiver that transmits and receives audio by wireless signals, a television camera and a screen display section that takes a camera image, and when a wireless signal transmitted by the handset is received. 1. A video telephone comprising: a base unit that detects the positional direction of a calling handset and matches the imaging direction of the television camera with the detected direction. 2. The main unit includes a screen display unit that displays an image signal received from the office line on a screen, a transmitting unit that wirelessly transmits an audio signal received from the office line to the slave unit, and a shooting screen. a television camera that converts it into an image signal and transmits it to the central office line; a receiving unit that wirelessly receives the audio signal from the slave unit; and a direction detection unit that detects the positional direction of the transmitter slave unit from the received audio signal. 2. The videophone according to claim 1, further comprising: a camera drive unit that aligns the imaging direction of the television camera with the detection direction.