Navigational information announcing system for motor vehicle
First Claim
1. A navigational information announcing system for a motor vehicle comprising:
- (a) first means for producing a first signal indicative of a measured distance travelled by a motor vehicle;
(b) a tape player for reproducing first and second data respectively pre-recorded on a magnetic tape, said tape player including a tape driving mechanism, said first datum including plural pieces of distance information along a predetermined course, said second datum including plural pieces of navigational information in audio form;
(c) second means responsive to said first datum, said second means producing a second signal upon termination of reproduction of one of said plural pieces of distance information and a third signal indicative of a reference distance expressed by said one piece of distance information;
(d) third means for producing a fourth signal when said measured distance indicated by said first signal has a predetermined relationship with respect to said reference distance indicated by said third signal;
(e) fourth means for controlling said tape driving mechanism of said tape player, said fourth means causing said tape driving mechanism to establish a pause operation in response to said second signal and to re-establish a normal playback operation in response to said fourth signal so as to reproduce one of said pieces of navigational information;
said second means comprising;
(a) a detector responsive to said first datum which is pre-recorded in the form of binary coded data;
(b) a series-parallel converter responsive to the output data of said detector, said series-parallel converter producing a binary coded datum in parallel form, said series-parallel converter producing a memory control signal when series-parallel conversion of a predetermined number of bits is completed; and
(c) a memory responsive to the output data of said series-parallel converter, said data being stored in response to said memory control signal.
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Accused Products
Abstract
A navigation information announcing system for a motor vehicle comprises a tape player, circuitry for measuring the distance actually travelled by the vehicle, circuitry for reproducing distance information pre-recorded on a magnetic tape, and a comparator. A distance indicated by a reproduced datum from a magnetic tape is compared with the distance actually travelled so that the tape player performs a pause operation until the two distances equal each other. When these distances equal each other, the normal playback operation is reestablished so as to reproduce oral information pre-recorded on the magnetic tape, supplying the vehicle driver with directional information.
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Citations
8 Claims
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1. A navigational information announcing system for a motor vehicle comprising:
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(a) first means for producing a first signal indicative of a measured distance travelled by a motor vehicle; (b) a tape player for reproducing first and second data respectively pre-recorded on a magnetic tape, said tape player including a tape driving mechanism, said first datum including plural pieces of distance information along a predetermined course, said second datum including plural pieces of navigational information in audio form; (c) second means responsive to said first datum, said second means producing a second signal upon termination of reproduction of one of said plural pieces of distance information and a third signal indicative of a reference distance expressed by said one piece of distance information; (d) third means for producing a fourth signal when said measured distance indicated by said first signal has a predetermined relationship with respect to said reference distance indicated by said third signal; (e) fourth means for controlling said tape driving mechanism of said tape player, said fourth means causing said tape driving mechanism to establish a pause operation in response to said second signal and to re-establish a normal playback operation in response to said fourth signal so as to reproduce one of said pieces of navigational information; said second means comprising; (a) a detector responsive to said first datum which is pre-recorded in the form of binary coded data; (b) a series-parallel converter responsive to the output data of said detector, said series-parallel converter producing a binary coded datum in parallel form, said series-parallel converter producing a memory control signal when series-parallel conversion of a predetermined number of bits is completed; and (c) a memory responsive to the output data of said series-parallel converter, said data being stored in response to said memory control signal. - View Dependent Claims (2, 3, 4)
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5. A navigational information announcing system for a motor vehicle comprising:
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a distance measuring means for measuring a distance travelled by a motor vehicle; a tape player with a magnetic tape on which plural pieces of binary coded distance information and plural pieces of audio information are recorded alternately; a tape control means for advancing said magnetic tape wherein, upon termination of reproduction of one of said plural pieces of binary coded distance information, a pause for said tape player is made and said one piece of binary coded distance information which has been reproduced is stored, and wherein, when said measured distance has a predetermined relationship with said one piece of binary coded distance information stored, said pause is released to permit said tape player to reproduce an adjacent one of said pieces of audio information which is recorded on said magnetic tape immediately after said one piece of binary coded distance information; each of said plural pieces of binary coded distance information following a marker signal which is recorded on said magnetic tape, said tape control means including a shift register and means for transmitting to said shift register a piece of binary coded distance information that is reproduced by said tape player in response to the end of said marker signal. - View Dependent Claims (6, 7, 8)
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Specification