JPH02250547A - Telephone set - Google Patents

Abstract

PURPOSE:To simplify the overall circuit structure and to reduce the cost of the circuit by converting the holding and ringing tones into the digital signals to store these signals in the same memory circuit and using this memory circuit and a signal converting circuit when the voices are held and called. CONSTITUTION:A control circuit 3 is set in a sound record mode when a sound record switch 11 is turned on. Then two types of sound signals are inputted through a microphone 7 for production of the holding and ringing tones. Thus a signal converting circuit 4 converts these voice signals into digital signals and stores them in a memory circuit 5. At incoming the circuit 3 starts both circuits 5 and 4 to convert the digital signals into the sound signals. These sound signals are delivered through a speaker as the ringing tones. When a holding switch 10 is turned on, the circuit 3 starts both circuits 5 and 4 to convert the digital signals of the holding tones into the sound signals. These sound signals are transmitted to a circuit from a talking circuit 1 as the holding tones. Thus the overall circuit structure is simplified together with reduction of the circuit cost.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a telephone set, and more particularly to a telephone set with a voice hold 1 voice call function.

[Conventional technology]

Conventionally, this type of telephone with voice hold and voice call functions was
The configuration was such that the hold circuit and the Koro circuit were independent.

[Problem to be solved by the invention]

The above-mentioned conventional telephone with voice hold and voice call functions has a configuration in which the hold circuit and the outlet path are independent, and therefore has the disadvantage that the entire circuit is complicated and expensive.

[Means to solve the problem]

The telephone of the present invention converts first and second audio signals as a hold tone and ringing tone input from a microphone into digital signals, and converts the digital signals into the first and second audio signals. a conversion circuit, a memory circuit that stores the digital signal, an amplifier circuit that sends a second audio signal output from the signal conversion circuit to a speaker as the ring tone, and a first audio output from the signal conversion circuit. a telephone call circuit that sends a signal to the line as the hold tone; and a control circuit that controls the signal conversion circuit and the memory circuit by inputting a recording operation start switch or a hold operation start switch or by inputting an incoming call signal, and controlling the first and second memory circuits; control of conversion between the audio signal and the digital signal, and the first
and a control circuit that controls sending out the second audio signal as the hold tone or ring tone.

〔Example〕

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.

In FIG. 1, the present embodiment includes an incoming call detection circuit 2 that detects an incoming call signal from a line, and an audio signal input from a microphone 7 that converts corresponding audio signals as a hold tone and a ring tone, respectively, into digital signals. A signal conversion circuit 4 that converts to the original audio signal, a memory circuit 5 that stores the digital signal from the signal conversion circuit 4 and sends the read digital signal to the signal conversion circuit 4, and a call from the signal conversion circuit 4. An amplifier circuit 6 that amplifies the audio signal of the sound and sends it to the speaker 8, a call circuit 1 that sends the hold tone audio signal from the signal conversion circuit 4 to the line, and an incoming call detection circuit 2 or the call circuit 1 side of the line. Line switching circuit 9 to switch to
and a control circuit 3 that controls the entire embodiment by turning on the hold switch 10 or the recording switch 11 or by an incoming call detection signal from the incoming call detection circuit 2.

Next, the operation of this embodiment will be explained.

First, the recording operation of the hold tone and ring tone will be explained.

By turning on the recording switch 11, the control circuit 3 enters a recordable mode, and when two audio signals for holding tone and ringing tone are input from the microphone 7, the signal conversion circuit 4 converts the two audio signals. are converted into digital signals and stored in the memory circuit 5. When the storage operation in the memory circuit 5 is completed, the switch 11 is turned off.

Next, the operation when receiving a call will be explained.

With the line switching circuit 9 connected to the incoming call detection circuit 2,
When the incoming call detection circuit 2 detects an incoming call signal, the control circuit 3 activates the memory circuit 5 and the signal conversion circuit 4 based on the detection signal from the incoming call detection circuit 2, reads out the digital signal of the ringing tone from the memory circuit 5, and converts the signal. Send it to the conversion circuit 4,
The signal conversion circuit 4 converts the sent digital signal into an audio signal, and the converted audio signal is amplified by the amplifier circuit 9 and amplified by the speaker 8 as a ringing tone.

Next, when the hold switch 10 is turned on, the control circuit 3 controls the line switching circuit 9 to connect the line to the call circuit 1,
The memory circuit 5 and the signal conversion circuit 3 are activated again, the digital signal of the held tone is read out from the memory circuit 5 and sent to the signal conversion circuit 4, and the signal conversion circuit 4 converts the sent digital signal into an audio signal. The converted voice signal is then sent from the telephone call circuit 1 to the line as a hold tone.

〔Effect of the invention〕

As explained above, the present invention converts a hold tone and a ring tone into digital signals and stores them in the same memory circuit.
By using the same memory circuit and signal conversion circuit that converts digital signals and analog signals during voice hold and voice call, the overall circuit can be made simpler and cheaper than conventional ones. More music on hold compared to.

The ring tone is stored in the memory circuit as a digital signal,
There are effects that can be generated.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Call circuit, 2... Incoming call detection circuit, 3... Control circuit, 4... Signal conversion circuit, 5... Memory circuit,
6...Amplifier circuit, 7...Microphone, 8...
Speaker, 9... line switching circuit, 10... hold switch, 11... recording switch. ℃Japanese Patent Attorney Susumu Naikan

Claims (1)

[Claims] a digital signal conversion circuit that converts first and second audio signals as a hold tone and a ringing tone input from a microphone into digital signals, and converts the digital signals into the first and second audio signals; a memory circuit that stores a signal; an amplifier circuit that sends a second audio signal output from the signal conversion circuit to the speaker as the ringing tone; and a first audio signal output from the signal conversion circuit as the hold tone. The signal conversion circuit and the memory circuit are controlled by a call circuit that sends out signals to the line, and an input of a recording operation start switch or a hold operation start switch or an input of an incoming call signal, and the first and second audio signals and the digital 1. A telephone set comprising: a control circuit that performs conversion control with a signal, and control circuit that performs transmission control of the first and second audio signals as the hold tone or ring tone.