Introduction of data entry completion signals to a cassette tape

Details Introduction of data entry completion signals to a cassette tape Introduction of data entry completion signals to a cassette tape

1974-08-27

1976-09-28

Konick, Bernard

Dynamic magnetic information storage or retrieval

Manual input recording

3401725, 360 60, G11B 1904, G11B 1504

Patent

active

039835774

ABSTRACT:
The data processing terminal unit in the form of a point of sale transaction device disclosed herein contains a keyboard for introducing data into the data processing terminal unit and a cassette tape deck which includes a cassette type magnetic tape and a cassette tape recording scheme for data storage. There are provided an E key and an M key on the keyboard for introducing end marking signals (EM signals) which indicates completion of data entry. The EM signals are introduced into the data processing terminal unit when the E key and the M key are depressed successively or simultaneously, thereby preventing erroneous introduction of the EM signals at an undesired time.

REFERENCES:
patent: 2921293 (1960-01-01), Bartlet
patent: 3671683 (1972-06-01), Rahenkamp
patent: 3806666 (1974-04-01), Hoshizume
"Dolby-ized Cassette Recorders," article by Julian D. Hirsch in Tape Recorder Guide, Spring 1972.

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