Low cost time indexed voice recorder system
First Claim
1. Airborne time and voice data recovery apparatus comprising the combination of:
- a battery operated portable audio frequency entertainment stereophonic magnetic tape recorder disposable within the flight clothing of an aircraft crewmember and having first and second recording channels for a magnetic recording tape received therein, said recorder including electrical batteries received therein;
manual elective means enabling starting and stopping of said magnetic recording tape within said recorder during an airborne mission;
means communicating aircrew member voice determined electrical signals generated during said airborne mission with a signal input port of said first one of said stereophonic tape recorder recording channels, for recording said voice determined signals;
time code generator means including a crystal controlled clock circuit and telephone dialing format tone code signal generator means controlled thereby had periodically communicating with a signal input port of said second stereophonic tape recorder recording channel for recording periodic bursts of mission time coded telephone dialing format dual tone signals on said recording tape second channel;
tape playback means including time tone code signal decoding means and decoded dual tone code time display means or playing back said recorded voice determined signals with a concurrent periodically updated readout of mission time associated therewith.
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Accused Products
Abstract
A time indexed voice recording system wherein tone coded time signals are received on one channel of an entertainment grade stereophonic tape recorder and the desired voice signals entered into the other channel. The recording system is portable in nature and especially adapted for use in airborne missions where it can be placed within the clothing of an aircrewmember in even the smallest of aircraft cockpits. The tone code in the disclosed system is generated by a telephone compatible microcircuit system which also includes a microcomputer and software for system controlling purposes. The disclosure includes a flow diagram of the microcomputer software as well as a complete assembly language listing.
13 Citations
23 Claims
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1. Airborne time and voice data recovery apparatus comprising the combination of:
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a battery operated portable audio frequency entertainment stereophonic magnetic tape recorder disposable within the flight clothing of an aircraft crewmember and having first and second recording channels for a magnetic recording tape received therein, said recorder including electrical batteries received therein; manual elective means enabling starting and stopping of said magnetic recording tape within said recorder during an airborne mission; means communicating aircrew member voice determined electrical signals generated during said airborne mission with a signal input port of said first one of said stereophonic tape recorder recording channels, for recording said voice determined signals; time code generator means including a crystal controlled clock circuit and telephone dialing format tone code signal generator means controlled thereby had periodically communicating with a signal input port of said second stereophonic tape recorder recording channel for recording periodic bursts of mission time coded telephone dialing format dual tone signals on said recording tape second channel; tape playback means including time tone code signal decoding means and decoded dual tone code time display means or playing back said recorded voice determined signals with a concurrent periodically updated readout of mission time associated therewith. - View Dependent Claims (2, 3)
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4. Time indexed portable voice data recording an playback apparatus comprising the combination of:
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an entertainment type battery operated portable stereophonic magnetic tape recorder having left and right recording and playback channels for a cassette housed magnetic tape received therein; means including a voice responsive microphone for communicating an electrical signal representative of said voice data to a recording input port of a first one of said left and right recording channels; means including a plurality of timing circuit responsive audio frequency tone generator circuits selectively and periodically connected with a recording input port for a second of said left and right recording channels for recording periodic bursts of time indicative tone coded signals on said second of said magnetic tape left and right recording channels; playback means including time tone code burst decoding circuits for generating and displaying electrical signals representative of said ongoing time during playback of said magnetic tape. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. The time indexed method for reproducing intermittent voice signals comprising the steps of:
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storing said intermittent voice signals along one channel portion of a stereophonic cassette contained magnetic recording tape, recording periodic coded tone burst signals representative of time index intervals along a second channel portion of said stereophonic magnetic recording tape; reproducing said recorded coded tone burst signals and said stored voice signals from said magnetic tape through segregated data channels during playback of said recorded stereophonic magnetic recording tape; said stored voice signals being recovered in an audio signal generating data channel; and said recorded tone burst signals being concurrently recovered in a digital time displaying data channel. - View Dependent Claims (20, 21, 22, 23)
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Specification