Small size tape recorder with adapter

Claim 1

A compact tape recorder apparatus having tape drive means, playback means for playing back information recorded in a tape and a first portable power supply especially designed for energizing only said tape drive means and said means for playing back information recorded on a tape; an adapter; first joining means on said tape recorder apparatus for receiving said adapter; second joining means on said adapter for coupling with said first joining means; recorder coupling means on said tape recorder apparatus for accepting said adapter to control an operation of said compact recorder apparatus, said coupling means including a plurality of recorder terminal means; said adapter including controlling means for adjustably controlling the operating speed of said compact tape recorder apparatus tape drive means, said adapter also including a second portable power supply especially adapted for providing power to said adapter controlling means and a plurality of adapter terminal means for connecting to said plurality of recorder terminal means when said adapter is connected to said tape recorder apparatus, said adapter terminal means and said recorder terminal means electrically connecting said controlling means to said tape drive means and said playback means when said first and second joining means are coupled together; said controlling means further including speech control circuit means for compressing or expanding the time axis of the playback information to correct for the speed adjustment provided by said controlling means; and said first and second power supplies being respectively housed in said recorder apparatus and said adapter and independently supplying power to their associated playback means and controlling means and having different voltage ratings, said first power supply being a low voltage, high capacity portable power source and said second power supply being a high voltage, low capacity portable power source.