Data transmitting/receiving apparatus and data communication sys

Details Data transmitting/receiving apparatus and data communication sys Data transmitting/receiving apparatus and data communication sys

1993-09-17

1996-12-10

Chan, Jason

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

379 96, 379 57, 379354, H04M 1100, H04M 100

Patent

active

055839215

ABSTRACT:
When receiving a conversion instruction from a key input section, a CPU reads character data stored in a message memory to a conversion buffer, converts the same into numeric data base on a conversion table, causes a tone signal generator to convert the same into a DTMF signal and outputs the signal to a speaker. When an input instruction of a registration designation and message number is received from the key input section, the CPU forms transmission data for sequentially storing the input information and the numeric data converted from character data in this order, causes to convert the same into the DTMF signal and outputs the signals. At the time of reception of the transmission data, the CPU identifies the content of the data, restores the numeric data into the character data based on an inverse conversion table, retrieves a message number from a TEL bank memory and registers a message into a memory area assigned to the number. With this construction, the troublesome operation of the user for converting the message sentence into numeric data and inputting the same can be omitted, addition and change of a message sentence of the reception side can be made on the transmission side, and the message transmitting function can be achieved by a combination with the telephone.

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patent: 5146348 (1992-09-01), Kaneyama
patent: 5249220 (1993-09-01), Moskowitz et al.

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