Abstract: A cassette tape recorder interface for high speed loading into a computer of data stored on cassette tapes. The interface receives signals from a cassette tape recorder modified to have the play head engaged while in the fast forward wind mode. The interface includes a comparator, a separator for separating clock and data pulses, a serial-to-parallel converter, control logic, and interface program memory.

Abstract: A U-Matic video tape recorder of the type which is modified so as to employ wide-band-direct circuitry for developing a modulated signal from a video signal and to divide each frame of the modulated signal into several segments for recordation upon respective tracks of a tape is further modified to include circuitry for transporting the tape at a reduced rate wherein each segment of the modulated signal is multiply reproduced and circuitry for combining one of each multiply reproduced segments of a signal developed by a demodulator of the reproduced modulated signal with a black-level video signal to develop a signal representing in slow motion the original video signal.

Abstract: An EIAJ-2, video tape recorder and reproducer machine having broadcast quality response characteristics achieved through the use of a wide band direct type FM modulator for encoding a video signal for recording onto a video tape, a pair of record/playback heads carried by a rotating drum which is partially wrapped by a length of the video tape which is transported past the drum such that the heads scan the tape in helical fashion, the speed of the drum being such that each head records upon a respective track of the video tape a segment of the modulated video signal which correspond to 1/3 of a field of the video signal, an FM demodulator for decoding the frequency modulated video signal which is recovered during playback, circuits for synchronizing the speed of the drum with the synchronization pulses of the video signal and for controlling the speed with which the tape is transported pass the drum and circuitry for minimizing distortion of the video signal caused when the segmented portions of the video sig

Abstract: A method and a video tape recorder apparatus having an encoder for serially pulse width modulating each of the normal frame-reference pulses with a bit of an elapsed record time signal and for recording the signal onto the frame-reference track of a video tape and a decoder for, during playback of the tape, extracting from the reproduced signal the frame-reference pulses and the elapsed record time signal and for generating therefrom a frame count signal.

Abstract: A video recorder/reproducer tape transport including a supply reel, a take-up reel, a helical scanner head assembly for recording and reproducing signals on the tape in a helical scan format, a capstan, a first movable tension tape guide positioned within the tape path intermediate the scanner head assembly and one of said reels and being movable under tension between a first location and a second location, the first movable tension tape guide being constantly under tension urging it towards the first location in opposition to the tension on the tape, and a second movable tension tape guide positioned within the tape path intermediate the other of the reels and the capstan, and being movable under tension between a third and a fourth location, the second movable tension tape guide being constantly under tension urging it toward the third location in opposition to the tension on the tape.