JP3040624U - Telephone with nuisance call prevention function - Google Patents

Abstract

(57) [Summary] [Purpose] To enable the user to select whether or not to make a ringing tone for the incoming call regardless of the will of the callee. [Structure] A phone number that may sound when a call comes in to a phone is stored in memory, and when a call comes in, the caller's phone number sent by the sender's phone number display service is , Turn on the sounder only when it is recorded in that memory and make a ringing tone. If the caller's telephone number is not recorded in that memory, activate the answering machine function and record the caller's message. The series of operations to be performed is automatically performed by the microprocessor.

Description

[Detailed description of the invention]

[0001]

[Problems to be solved by the device]

 Conventionally, telephones do not have the function of automatically receiving a call only from a specific caller, and there is a problem in that a nuisance call such as a wrong call or a mischievous call may interfere with rest. Was there.

[0002]

[Means for Solving the Problems]

 When the start switch 17 is pressed, the information is sent to the microprocessor MPU 14, and the MPU 14 reads the memory RAM 13 based on the information and turns off the switch 1, whereby the telephone becomes the nuisance call prevention state.

In order to record some telephone number information in the RAM 13 from a plurality of telephone numbers which are arbitrarily recorded in advance in the speed dial RAM 15 of the multi-function telephone circuit 8, the telephone is prevented from nuisance call. In this state, the bus changeover switch 19 is pushed. Based on the information, the MPU 14 sends a signal to the bus switching circuit 9, disconnects the multi-function telephone circuit 8 and the bus switching circuit 9, and puts the RAM 13 in the writing state. In this state, when the dial switch 22 is pressed and the memory switch 20 is pressed by pressing the shortened number corresponding to the telephone number to be recorded in the RAM 13, the MPU 14 digitizes the entered shortened number based on the information, and the numerical value is used as an address. Then, "1" is recorded in the address of the RAM 13 to send a signal to the bus switching circuit 9, the multi-function telephone circuit 8 and the bus switching circuit 9 are connected, and the RAM 13 is read. A plurality of telephone number information can be recorded in the RAM 13 by repeatedly pressing the bus switching switch 19, the abbreviated number with the dial switch 22 and the memory switch 20.

In order to erase some of the telephone number information from among the plurality of telephone number information preliminarily recorded in the RAM 13, put the telephone in the nuisance call prevention state and press the bus switching switch 19. Based on the information, the MPU 14 sends a signal to the bus switching circuit 9, disconnects the multi-function telephone circuit 8 and the bus switching circuit 9, and puts the RAM 13 into the writing state. In this state, when the dial switch 22 is pressed and the reset switch 21 is pressed by pressing the abbreviated number corresponding to the telephone number to be deleted in the RAM 13, the MPU 14 digitizes the abbreviated number input based on the information, and uses the digit as an address. "0" is recorded in the address of the RAM 13 to be operated, a signal is sent to the bus switching circuit 9, the multi-function telephone circuit 8 and the bus switching circuit 9 are connected, and the RAM 13 is read. Thereafter, by repeatedly pressing the bus changeover switch 19, pressing the abbreviated number with the dial switch 22 and pressing the reset switch 21, a plurality of telephone number information recorded in the RAM 13 can be erased.

When the release switch 18 is pressed, the information is sent to the MPU 14, the MPU 14 turns on the switch 1 based on the information, the MPU 14 is in the inactive state until the start switch 17 is pressed, and the telephone is The nuisance call prevention status is released.

When a telephone call arrives at the telephone set to the nuisance call prevention state, the demodulation circuit 11 digitally encodes the information of the transmission source telephone number and records it in the latch circuit 12. Next, the MPU 14 sequentially reads the data from the address "1" of the RAM 13, reads the telephone number with the address of "1" as the abbreviated number from the telephone number memory RAM 15, and the telephone number and the latch circuit. Compare whether the telephone numbers recorded in 12 are the same. When there is the same telephone number, the MPU 14 turns on the switch 1 and causes the sounder 2 to ring. If the same telephone number is not found even after repeating this operation up to the final address in RAM 13, MPU 14 sends a signal to MPU 7 and activates answering machine circuit 16 to record the caller's message on the tape of recording tape recorder 5. To do. When the call ends, the information is sent from the call circuit 4 to the MPU 14, and the MPU 14 turns off the switch 1.

[0007]

[Effect of the invention]

 The ring tone sounds only when a preset call arrives, so you can receive the necessary phone call, and when you receive a call that is not stored in memory, the ring tone does not sound, so you can prevent rest by a nuisance call. I can't.

[Submission date] February 10, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

When a telephone call arrives at the telephone set to the nuisance call prevention state, the demodulation circuit 11 digitally encodes the information of the transmission source telephone number and records it in the latch circuit 12. Next, the MPU 14 sequentially reads the data from the address "1" of the RAM 13, reads the telephone number with the address having the data "1" as the abbreviated number from the speed dial RAM 15, and the telephone number and the latch circuit. Compare whether the telephone numbers recorded in 12 are the same. When there is the same telephone number, the MPU 14 turns on the switch 1 and causes the sounder 2 to ring. If the same telephone number is not found even after repeating this operation up to the final address of RAM 13, MPU 14 sends a signal to MPU 7 to operate the answering machine circuit 16 and record the caller's message on the tape of the recording tape recorder 5. . When the call ends, the information is sent from the call circuit 4 to the MPU 14, and the MPU 14 turns off the switch 1.

[Brief description of the drawings]

FIG. 1 is an external view of a telephone with a nuisance call prevention function.

FIG. 2 is a circuit block diagram of a telephone with a nuisance call prevention function.

[Explanation of symbols]

 1 Switch 2 Sounder 3 Handset 4 Call Circuit 5 Recording Tape Recorder 6 Key Interface 7 MPU 8 Multifunctional Telephone Circuit 9 Bus Switching Circuit 10 Outer Line Terminal 11 Demodulation Circuit 12 Latch Circuit 13 RAM 14 MPU 15 Speed Dial RAM 16 Answering Machine 17 Start-up switch 18 Release switch 19 Bus selection switch 20 Memory switch 21 Reset switch 22 Dial switch 23 Function selection switch for multi-function telephone 24 Key interface

Claims (1)

[Utility model registration claims] 1. A call is made only when there is a caller's phone number among a plurality of phone numbers arbitrarily stored in a telephone by using an electric signal of the caller's phone number sent by a caller's phone number display service. A telephone with the functions that can be enabled.