Navigational information announcing system for motor vehicle

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.