JPH0248848A - Handset - Google Patents

Abstract

PURPOSE:To improve the operability of a handset by connecting a main body and a handset by an optical signal. CONSTITUTION:A voice from a handset is reproduced by speakers 25, 26 of the handset 2. The real voice reproduced by the speaker 25 is a result of a signal F, which results from a signal A sent via a communication line 3, the signal A is demodulated by a modulator-demodulator section 15 via a communication line interface section 16 of a main body section 1, the demodulated signal B is modulated by an optical signal modulation section 13, the resulting signal C is radiated from an optical signal transmission section 11 as an optical signal D, the signal D is received by an optical signal reception section 21, the signal E from the reception section 21 is demodulated by the optical signal demodulation section 23 as the signal F. Similarly, a signal (a) picked up by the microphone 26 is radiated from an optical signal transmission section 22 as an optical signal (b) via an optical signal modulation section 24. The signal (b) is received by the optical signal reception section 12 of the main body 1 and sent via a communication line 3, an optical signal demodulation section 14, a modulator-demodulator section 15 and an interface section 16.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a telephone transmitting and receiving device, and more particularly to a telephone transmitting and receiving device in which a main body portion and a handset portion are separated.

[Conventional technology]

Conventionally, in this type of transmitter/receiver, the connection between the main body and the handset has been made using a wired transmission method using a connection cord;
Alternatively, a wireless transmission method using radio wave transmission and reception was used.

[Problem to be solved by the invention]

The above-mentioned conventional transmitting/receiving devices use connection cords and wireless antennas, so the connection cords may become tangled or disconnected, or there may be a need to secure a dedicated space for the wireless antenna. It has the disadvantage of having the above limitations.

[Means to solve the problem]

The telephone transmitting/receiving device of the present invention includes a main body section that transmits and receives call signals via a communication line, and a handset section that is provided separately from the main body section and constitutes a transmitting circuit and a receiving circuit together with the main body section. The transmitting/receiving device includes a pair of optical transmission means for connecting the transmitting circuit and the receiving circuit between the main body section and the handset section.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention.

In FIG. 1, 1 is a main body part, 2 is a handset part, 3
represents a communication line.

The transmitted and received voices are reproduced or converted into signals by the speaker 25 and the microphone 26, respectively.

The received voice reproduced by the speaker 25 is generated by demodulating the signal A sent via the communication diagram 113 in the transmitting/receiving signal modulation/demodulation section 15 via the communication line interface section 16.
The optical signal modulator 13 modulates the signal C based on the demodulated signal B, and the optical transmitter 11 emits the signal C as an optical signal. This optical signal is received by the optical signal receiving section 21, and the signal E from the optical signal receiving section 21 is demodulated by the optical signal demodulating section 23 to reproduce a demodulated signal F.

Similarly, the transmitted voice signal a, which is collected by the microphone 26, is modulated by the optical modulator 24, and is emitted from the optical signal transmitter 22 as an optical signal. The optical signal receiver 12 receives this optical signal.
The signal C received by the receiver and demodulated by the optical signal demodulator 14 is modulated by the transmitter/receiver signal modulator/demodulator 15, and the modulated transmitter signal d is sent to the communication line 3 via the communication line interface unit 16.
Send and receive calls as described above.

In this case, the wavelength ranges of the optical signals 1 and 2 are separated so that they do not affect each other.

〔Effect of the invention〕

As explained above, according to the present invention, by connecting the main body and the handset using an optical signal,
Since this method can be freed from the restrictions on use that exist in the case of the connection cord or radio wave coupling method, it has the effect of improving the operability of the handset.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Main body part, 2... Handset part, 3... Communication line, 11... Optical signal transmitter, 12... Optical signal receiver, 13... Optical signal modulator, 14... ... Optical signal demodulation section, 15... Transmission/reception signal modulation/demodulation section, 16... Communication line interface section, 21... Optical signal reception section, 22
... Optical signal transmitter, 23... Optical signal demodulator, 24.
... Optical signal modulation section, 25 ... Speaker, 26 ... Microphone.

Claims (1)

[Claims] A telephone transmitting/receiving device comprising: a main body for transmitting and receiving call signals via a communication line; and a handset section, which is provided separately from the main body and constitutes a transmitting circuit and a receiving circuit together with the main body. A telephone transmitting/receiving device comprising a pair of optical transmission means for connecting the transmitting circuit and the receiving circuit between the main body section and the handset section.