Browse Prior Art Database

Remote Microphone Privacy

IP.com Disclosure Number: IPCOM000096750D
Original Publication Date: 1963-Oct-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Wehmer, BF: AUTHOR

Abstract

The system insures Privacy of dictation among a plurality of dictators in a remote dictating system. Dictating stations 1, 2 and 3 are selectively connected to two recorders 4 and 5 through selection unit 6 and intermediate cables. Recorders 4 and 5 have associated readrecord heads 7 and 8 and magnetic belts 9 and 10. These are driven in synchronism by common drive shaft 11 either in a forward direction for the purpose of recording and playback or in a reverse direction in order to review previously dictated material. The material dictated from any station is recorded simultaneously on both belts 9 and 10. Playback circuits 12 of the recorder 5 are muted, so playback of any previously dictated material is available only from recorder 4.

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Remote Microphone Privacy

The system insures Privacy of dictation among a plurality of dictators in a remote dictating system. Dictating stations 1, 2 and 3 are selectively connected to two recorders 4 and 5 through selection unit 6 and intermediate cables. Recorders 4 and 5 have associated readrecord heads 7 and 8 and magnetic belts 9 and 10. These are driven in synchronism by common drive shaft 11 either in a forward direction for the purpose of recording and playback or in a reverse direction in order to review previously dictated material. The material dictated from any station is recorded simultaneously on both belts 9 and 10. Playback circuits 12 of the recorder 5 are muted, so playback of any previously dictated material is available only from recorder 4.

It is assumed that a person at station 1 has previously dictated material that occupied areas 9a of belt 9 and 10a of belt
10. When the dictation from station 1 terminates, magnet 13 is swiveled down in a direction indicated by arrow 14 and held in contact with belt 9 to erase it completely. If another dictator at station 2, for example, seizes the central-recorders, the material that is dictated is also recorded simultaneously on belts 9 and 10.

He can also backspace and playback any material that he has dictated. However, if he backspaces into corresponding portions 9a and 10a, he does not hear material previously dictated from station 1. He will not hear any dictated material from portion 9a of belt 9,...