JPH0614650B2 - Reset method of arithmetic processing unit in communication device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reset method for an arithmetic processing device, and more particularly, to a transmitter for encoding analog voice information input via a switch and sending it to a transmission line. An arithmetic processing unit having a receiving unit that inputs encoded voice information from a transmission line, converts the voice information into analog voice information, and outputs the analog voice information is a communication device configured to form a pair with the exchange, In a communication system of voice information in which the start of communication between the exchanges is detected by an off-hook signal of the partner station and the end of communication is detected by an on-hook signal of the partner station, the voice signal is converted into a digital signal, or vice versa. The present invention relates to a method for resetting an arithmetic processing unit that performs conversion to an initial state.

[Prior Art and Problems to be Solved by the Invention]

Recently, in an exchange system including a voice transmission system, voice signals are digitized, but the information is further reduced and only necessary and sufficient information is compressed to make a call, and information about one station is stored in other stations. The processing system has been widely adopted and contributes to improving the transmission efficiency of telephone lines.
In such a system, an arithmetic processing unit provided in a communication device connected to a telephone digitally processes a voice signal input from the telephone and sends encoded information to a communication device of a partner, Conversely, the voice information received from the device is converted into an analog voice signal and sent to the telephone. In this case, in the receiving unit of the arithmetic processing device, that is, the processing unit for receiving data which is digitized information and converting it into an analog signal, the previously received data is temporarily stored in the buffer and then stored. A predetermined analog voice signal is synthesized from parameters such as characteristics, pitch, and amplitude of human voice during a call with data.

However, in the above-mentioned arithmetic processing unit in the conventional communication device, the received data is converted into analog by successively processing the received data. Therefore, even if the other party of the call changes, the data of the former party remains in the buffer of the arithmetic processing apparatus, and the arithmetic processing apparatus is placed in a state of being activated in accordance with the former party.

Therefore, in the conventional arithmetic processing device, there is a possibility that the voice signal may be synthesized by the remaining data of the other party before, and it is impossible to start the call accurately, and the accuracy of the voice information processing system is deteriorated. .

An object of the present invention is to erase the previous data of the other party and set the initial state of the arithmetic processing unit by inputting a reset signal to the receiving side of the arithmetic processing unit by using the on-hook signal when the call ends. The voice processing is performed based on accurate data to improve the accuracy of the voice information processing system.Therefore, an on-hook detection circuit that detects the on-hook of the local station is provided, The voice conversion information at the time of line connection and the destination information including the circuit operation state are reset by the on-hook signal of the own station detected by the on-hook detection circuit, and the arithmetic processing device in the communication device is set to the initial state. It provides a reset method.

[Means for Solving the Problems]

According to the present invention, a transmitter that encodes analog voice information input via the exchange and sends the encoded voice information to the transmission line, and inputs the encoded voice information from the transmission line to convert the voice information into analog voice information. An arithmetic processing unit having a receiving unit for outputting via an exchange is a communication device configured to form a pair with the exchange, the start of communication between the exchanges is detected by an off-hook signal of the other station, and the end of communication is detected by the other station. In the communication system of the voice information detected by the on-hook signal of, the on-hook detection circuit for detecting the on-hook of the own station is provided, and the voice conversion information and the circuit operation stored in the arithmetic processing unit at the time of line connection during the call. A communication device characterized by resetting partner information including a state by an on-hook signal of its own station detected by the on-hook detection circuit and setting the arithmetic processing device to an initial state. A method for resetting an arithmetic processing unit is provided.

〔Example〕

Hereinafter, the present invention will be described by way of examples with reference to the accompanying drawings. FIG. 1 is a circuit configuration diagram for implementing the reset method according to the present invention. In the circuit of FIG. 1, the detection circuit 32 detects the on-hook signal 8 sent through the private branch exchange 2 when the telephone call by the telephone 1 is terminated, and the reset signal 9 is sent to the arithmetic processing unit 31 of the communication device 3. The arithmetic processing unit 31 is input to set the initial state.

The communication device 3 has an arithmetic processing unit 31 and an on-hook signal detection circuit 32. The arithmetic processing unit 31 synthesizes a voice signal based on the data 7 sent from another arithmetic processing unit (not shown) and inputs it to the private branch exchange 2 as indicated by reference numeral 6, and also from the private branch exchange 2. It has a function of digitally processing the transmitted voice signal 4 and transmitting it as data 5 to another arithmetic processing device.

The on-hook signal detection circuit 32 has a function of receiving the on-hook signal 8 from the private branch exchange 2 and sending a reset signal 9 to the arithmetic processing unit 31.

The details of the arithmetic processing unit 31 are shown in FIG. 2. The transmitting unit S converts the voice signal 4 into the data 5 and sends it out, and the receiving unit R converts the data 7 into the voice signal 6 and sends it out. The transmitter S is A
A D / D converter 304, an input storage buffer 311, an output storage buffer 313, and a reception unit R and a calculation unit 315 common to the reception unit R. The reception unit R includes an input storage buffer 314 and an output storage buffer 3.
12, a D / A converter 306 and the arithmetic unit 315. The activation circuit 316 activates the arithmetic unit 315 when a certain amount of information is stored in each of the input storage buffers 311 and 314.

The circuit of FIG. 1 having the above configuration operates as follows.

First, the voice signal 4 from the transmitter of the telephone 1 is transmitted to the private branch exchange 2
Is stored in the buffer 311 of the arithmetic processing unit 31 after digital conversion by the A / D converter 304 via the
Figure). Each time the voice signal 4 is input to the buffer 311, the transmission synchronization signal 41 is sent to the starting circuit 316, and when the voice signal 4 is input to the buffer 311 by a predetermined amount, the start signal 81 is output from the starting circuit 316 to the computing unit. It is sent to 315 and the arithmetic unit 315 is activated. The arithmetic unit 315 digitally processes the audio signal 4 and outputs it as predetermined data 5 via the buffer 313.

When the call ends and the transmitter of the telephone 1 is placed, the on-hook signal 8 is input from the exchange 2 to the detection circuit 32 thereof, and the reset signal 9 is sent to the starting circuit 316 of the arithmetic processing unit 31 and the buffers 312 and 314 of the receiving unit R. Enter (Fig. 2). The starting circuit 316 and the buffers 312 and 314 of the receiving unit R are reset and the information regarding the previous data is lost, and the initial state is set.

When the data 7 is input to the input storage buffer 314, the reception synchronization signal 71 is sent to the activation circuit 316 for each input. When a predetermined amount of data is accumulated in the buffer 314, the operation signal 315 is activated by the start signal 81 and the data 7 becomes D
The signal is analog-converted by the / A converter 306 and input to the telephone 1 as a predetermined voice signal 6 via the private branch exchange 2.

〔The invention's effect〕

As described above, according to the present invention, since the arithmetic processing unit can be set to the initial state by using the on-hook signal when the call is ended, the influence of the conventional call can be eliminated and only the data of this time can be used as an accurate basis. It is possible to make various calls and the accuracy of the arithmetic processing device is improved.

[Brief description of drawings]

FIG. 1 is a circuit configuration diagram of an arithmetic processing unit and a reset method according to the present invention, and FIG. 2 is a circuit configuration diagram of the arithmetic processing unit of FIG. 1 ... Telephone, 2 ... Private branch exchange, 3 ... Communication device, 4 ... Voice signal, 5 ... Data, 6 ... Voice signal, 7 ... Data, 8 ... On-hook signal, 9 ... Reset signal , 31 ... Arithmetic processing unit, 32 ... On-hook detection signal circuit.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tatsuki Hayashi 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (56) References JP-A-56-29295 (JP, A) JP-A-57- 4640 (JP, A) Actually developed 56-110500 (JP, U)

Claims (1)

[Claims] 1. A transmission section for encoding analog voice information inputted through a switch and sending it out to a transmission line, and encoded voice information from the transmission line for conversion into analog voice information, and a switch. An arithmetic processing unit having a receiving section for outputting via a pair is installed opposite to the exchange in pair with the exchange, and the start of communication between the exchanges is detected by an off-hook signal of the partner station to end the call. In the communication device that detects the on-hook signal of the partner station, an on-hook detection circuit that detects the on-hook of the own station is provided, and when the end of the call is detected by the on-hook detection circuit, A reset method for an arithmetic processing unit in a communication device, wherein a storage circuit and an arithmetic circuit are reset and the arithmetic processing unit is set to an initial state.