JPS60154760A - Integrated circuit for push-button telephone set - Google Patents

Abstract

PURPOSE:To attain ease of cancellation of registration on the way of registering operation of a telephone number as an abbreviated number by detecting that a specific pushbutton is depressed consecutively over twice. CONSTITUTION:Delay flip-flops (FF) 1, 2 change the state of an output Q in synchronizing with the trailing of a clock input C and both the FFs are connected in cascade as a binary counter. Every time a specific pushbutton is depressed, a pulse signal S is impressed as the clock input of the 1st FF1, and the FFs are connected so as to reset both the FFs 1, 2 by a pulse signal A generated any of numeric pushbuttons is depressed. When the numeric button is depressed while a specific pushbotton is depressed for twice or over, the FF is reset and when the specific pushbutton is depressed twice consecutively, the output Q of the 2nd FF2 is inverted to a high level and becomes a cancellation signal via a differentiation circuit 3 and outputted.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a method of operating a telephone push button when registering a telephone number as an abbreviated number in a memory circuit. [Prior Art] In recent years, outpulse type push button telephones have become popular. accompany,
It has the function of registering a telephone number as an abbreviated number in a memory circuit built into the telephone, and automatically sending out a dial pulse corresponding to a predetermined telephone number by simply pressing several push buttons corresponding to the abbreviated number. With the advent of telephones, integrated circuits for telephones incorporating the memory circuit and having the above-mentioned functions are generally called repertoire dialers.

A flowchart of telephone number registration in a conventional repertoire dialer is shown in FIG. The conventional pushbutton operation method is to first press a specific pushbutton (such as * or #) to indicate that the operation you are about to perform is to register a telephone number, and then press the specified telephone number. Press the push button. When all telephone numbers have been pressed, the user presses the specific pushbutton again, and then presses the one-digit or two-digit number pushbutton corresponding to the abbreviated number. As soon as the last pushbutton is pressed, the integrated circuit performs an operation of storing the data of the telephone number in the address corresponding to the abbreviated number in the memory circuit.

However, with conventional operation methods, even if you realize during the registration process that you have entered the wrong phone number or are trying to register an undesired abbreviated number, you cannot correct it midway through the registration process, resulting in incorrect data being stored at the end. It must be canceled by turning the hook switch ON/OFF F'. However, it is troublesome to operate the handset each time to cancel a call, and on the other hand, part of the regulations regarding technical standards related to telephones states that ``DC circuits shall not be closed for any purpose other than making a call or communicating.'' ◇ [Purpose] The present invention is intended to solve this drawback, The purpose is to make it possible to cancel the registration operation in the middle by operating a push button without operating a hook switch.

[Summary] 70 push button operations at the time of telephone number registration according to the present invention
- The chart is shown in Figure 1. The basic operating method is the same as the conventional method, but a feature is added that detects that the specific push button is pressed twice or more in succession, and the cancel operation is performed based on the output of the detection circuit. do.

〔Example〕

An embodiment of the detection circuit for concretely realizing the present invention is shown in FIG. In the figure, the delay 7 lip flops 1 and 2 change the state of the output Q in synchronization with the fall of the clock C, and both 7 lip flops 70 are connected in series as a binary counter. A pulse signal S is applied as a clock input to the first seven lip-flop 1 each time the specific one push button is pressed, and a pulse signal A is generated each time any one of the numerical push buttons is pressed. are connected to set both 7 lip-flops 1.2 on 'J'. By which connection, if the numeric pushbutton is pressed while the particular pushbutton is pressed twice or more, the flip-flop is reset, and if the particular pushbutton is pressed twice or more in succession, the flip-flop is reset. The output q of the second 7-lip 70 tube 2 is inverted from low level to high level. The output Q of the second 7-lip 70 tube 2 is applied to the differentiator circuit B, and the output Q changes from low level to high level. A differential pulse is output in synchronization with the inversion. The differential pulse can be used instead of the cancellation signal of the conventional 7-switch. [Effect] As described above, according to the present invention, the hook switch 0N1
The present invention has the advantage of being able to easily cancel the operation of registering a telephone number as an abbreviated number without the hassle of 0'FF and without violating the rules regarding the technical standards. It can be applied not only to pulse dialers with memory, but also to tone dialers with repertoire memory.

[Brief explanation of drawings]

FIG. 1 is an operation flowchart when registering a telephone number in the present invention. FIG. 2 is an embodiment of the present invention for detecting a specific pushbutton being pressed twice in succession. FIG. 3 is an operation flowchart when registering a telephone number in a conventional telephone. 1.2...Delay 7 Lip 70 Knob 3...
...Differential circuit S...Pulse signal generated each time a specific push button is pressed A...Pulse generated each time any one of the numerical push buttons is pressed Signal and above Applicant Suwa Seikosha Co., Ltd. Agent Patent Attorney Tsutomu Mogami 132@1iJ3m

Claims (1)

[Claims] A telephone equipped with a memory circuit for storing a telephone number as an abbreviated number, and having a function of starting registration by first pressing a specific first push button when registering a telephone number in the memory circuit. , when it is detected that the specific first pushbutton has been pressed at least twice in succession during phone number registration, the registration number from the start of registration to the time of detection is invalidated and a new registration is started. An integrated circuit for a pushbutton telephone, characterized in that it can be set to a state.