JPH02152358A - Telephone set with calling memory function - Google Patents

Abstract

PURPOSE:To take the memo of a message with simple operation, to miniaturize a telephone set, to lower a cost and to improve reliability by digitizing a sound signal and recording the signal. CONSTITUTION:The received sound signal is converted to a digital signal in an A/D and D/A converting circuit 4-1 and passed through a selecting circuit 7-1. Then, the signal is converted to an analog signal and outputted. Simultane ously, the signal is passed through a selecting circuit 7-2 and stored to a memory 5. A transmitting signal from a transmitter 8' is converted to the digital signal in an A/D and D/A converting circuit 4-2 and passed through a selecting circuit 7-3. Then, the signal is converted to the analog signal and outputted to a line 1. Simultaneously, the signal is passed through the selecting circuit 7-2 and stored to the memory 5. When a call is incoming, the memory 5 is read and the signal is transmitted as a message sending signal 9-3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a general telephone set, and more particularly to a telephone set with a call memory function that is capable of recording and reproducing voices by incorporating a memory in a call circuit section.

[Conventional technology]

Traditionally, this type of telephone staff had an answering machine. An answering machine has a built-in tape recorder, which activates the magnetic tape when a call arrives, sends out a recorded message, and then records the other party's message. However, when using a private phone, a function that allows you to record notes during a call is more effective than an answering machine function, and in most cases, the answering machine function is sufficient if it can send an absentee message to the caller. It is.

[Problem to be solved by the invention]

The above-mentioned conventional answering machine incorporating a tape recorder is activated when a call arrives, so the tape recorder cannot be used to take notes during the actual call, and since it is combined with a tape recorder, it is large. , there are problems with reliability;
It also has the drawbacks of being expensive.

[Means to solve the problem]

A telephone with a call memory function of the present invention includes a first analog-to-digital conversion circuit connected to a call circuit, a second analog-to-digital conversion circuit connected to a handset,
a memory and an analog signal from the communication circuit to the first
a first selection circuit that selects the digital signal converted by the analog-to-digital conversion circuit or the digital signal from the memory, sends it to the second analog-to-digital conversion circuit, converts it into an analog signal, and outputs the analog signal to the handset; and a second circuit for selecting a digital signal obtained by converting the digital signal from the first analog-to-digital conversion circuit or the analog signal from the handset by the second analog-to-digital conversion circuit and inputting the selected digital signal to the memory.
selection circuit, and selects a digital signal from the second analog-to-digital conversion circuit or a digital signal from the memory, sends it to the first analog-to-digital conversion circuit, converts it into an analog signal, and sends it to the communication circuit. and a third selection circuit for sending the data.

〔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. The received voice signal is converted into a digital signal by the A/D-D/A conversion circuit 4-1 via the office line 11 communication circuit 2, and the normal received voice signal is converted into a digital signal by the A/D-D/A conversion circuit 4-1 via the selection circuit 7-1. The A conversion circuit 4-2 returns the signal to an analog signal and outputs it to the receiver 8. At the same time, the reception signal that has passed through the selection circuit 7-2 is stored in the memory 5. The memory 5 is a FIFO type memory, and if no control is performed, it stores the latest message for a time corresponding to the memory capacity (the storage time is determined by the A/D-D/A conversion circuit 4).
If high-efficiency encoding is applied at -1, a practically sufficient value can be achieved with an IC memory). Memory 5 by control circuit 6
If the start/stop control is performed, the message is selectively left and played back at the appropriate time, and the playback signal 9-1 in the memory 5 is sent to the receiver via the selection circuit 7-1 and the A/D-D/A conversion circuit 4-2. It can be output to 8. Further, in the case of a harassing telephone call, by sending the return signal 9-4 from the middle tap of the memory 5 to the calling party, it becomes possible for the calling party to hear the harassing telephone call himself.

The transmission signal from the transmitter 8' is converted into a digital signal by the A/D-D/A conversion circuit 4-2, and is normally sent to the selection circuit 7.
-3, returns to an analog signal at the A/D-D/A conversion circuit 4-1, and outputs it from the communication circuit 2 to the office line 1. If you want to send a message when you are absent, please enter A/D - D/ in advance.
Message recording signal 9- which is the output of the A conversion circuit 4-2
2 is stored in the memory 5 via the selection circuit 7-2. When a call arrives, the memory 5 is read and a message sending signal 9 is sent.
-3 as selection circuit 7-3. A call is transmitted via the A/D-D/A conversion circuit 4-1 and the telephone call circuit 2.

Counter 10. The display 11 is for displaying the remaining recording time. Further, the dial circuit tone ringer circuit 3 of the telephone call circuit 2 is connected.

〔Effect of the invention〕

As explained above, the present invention digitizes and stores audio signals, thereby making it possible to take notes of messages with a simple operation, and to send out guidance messages in case of absence.
- It has the effect of being able to respond to harassing phone calls and record the voice of a suspicious person, and at the same time is suitable for IC implementation, so it can be expected to be compact, low-cost, and highly reliable.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a telephone with a call memory function according to an embodiment of the present invention. 1... Office line, 2... Call circuit, 3... Dial.
Tone ringer circuit, 4-1 to -2...A/D -D/
A conversion circuit, '5... Memory, 6... Control circuit, 7
-1 to -3...Selection circuit, 8...Telephone receiver, 8'...
- Transmitter, 9-1... Playback signal, 9-2... Message recording signal, 9-3... Message sending signal, 9-
4... Call return signal, 10... Counter, 11
···display.

Claims (1)

[Claims] a first analog-to-digital conversion circuit connected to a telephone call circuit; a second analog-to-digital conversion circuit connected to a handset; and a memory; a first selection circuit that selects the digital signal converted by the conversion circuit or the digital signal from the memory, sends it to the second analog-to-digital conversion circuit, converts it into an analog signal, and outputs it to the handset; a second selection circuit that selects a digital signal obtained by converting a digital signal from the first analog-to-digital conversion circuit or an analog signal from the handset by the second analog-to-digital conversion circuit and inputs the selected digital signal to the memory; The second analog
and a third selection circuit that selects the digital signal from the digital conversion circuit or the digital signal from the memory, sends it to the first analog-to-digital conversion circuit, converts it into an analog signal, and sends it to the communication circuit. A telephone with a call memory function featuring: