Pioneer Electronic Corporation

Shouzaburou Sakaguchi

Yoshiharu Ueki

During forward cue operation, clock pulses are counted until a predetermined number indicating a blank tape portion. Forward cue continues with only audio pulses being counted until a predetermined number have been counted indicating the next recorded tape portion. Reverse scan is then performed until the blank portion is again detected, and the machine is then switched to play mode.

Playback search control device for a tape recorder

A method for selecting a desired piece of information recorded in a magnetic tape mounted in a magnetic tape recorder and/or reproducer while reproducing the information, the magnetic tape recorder and/or reproducer having a magnetic head, a tape transport, and a mechanism controller adapted to actuate the magnetic head and the tape transport to perform selectively one of mode operations including PLAY, CUE and RVW mode operations. The method comprises a first step of causing the mechanism controller to perform the CUE or RVW mode operation while detecting the output signal from the magnetic head to find a leading edge of an information carrying tape portion, a second step of causing the mechanism controller to perform the PLAY mode operation which is initiated from a tape portion adjacent to and upstream of the leading edge of the information carrying tape portion for a certain period after finding the leading edge, a third step of causing the mechanism controller to repeat the first and second steps until a manual stop command is given during the period, and a fourth step of causing the mechanism controller to perform the PLAY mode operation even after the period in case a manual stop command is given during the period.

Method for selecting desired piece of information recorded in magnetic

A repeat playback circuit device for use in a tape recorder in which the tape recorder is prevented from jumping again into a inter-music detection mode before the beginning of a desired segment of music is detected. During a normal play operation, pulses from an oscillator source are applied to the clock input of a counter while pulses indicative of the presence of a segment of music are applied to the clear input of the counter to thus prevent the counter from reaching a predetermined count. At the end of the segment of music, the pulses applied to the clear input of the counter are removed, whereupon the counter can then reach the predetermined count. When the counter does in fact reach the predetermined count, the tape recorder is set to the rewind mode where it remains until a blank segment is detected, at which time the tape recorder is placed in the play mode. The counter is set to be ready to detect a blank portion on the tape at the beginning of a segment of music when in the play mode.

Repeat playback device for tape recorder

A tape drive for a magnetic tape recording and reproducing system. Slackening of the tape is prevented and a stable running tape is assured each time the system is switched to a normal running mode. The take-up reel motor is delayed until the roller which presses the tape against the capstan is in its pressing position and until the magnetic head is pressed against the tape in its record or reproduce position.

Tape drive device in recording and reproducing device

An automatic-reversing tape deck arranged such that the magnetic tape advancing direction is automatically reversed when the tape is wholly wound during operation and then the operation is continued with the tape being advanced in the reversed direction, in which tape-advancement-direction changing signals are repeatedly generated by a circuit if the tape gets unable to advance because of a certain failure or accident, and the tape advancing operation is stopped when several tape-advancement-direction changing signals are counted by a counter. In this tape deck, wasteful power dissipation and harmful heat generation in the mechanism for changing the tape-advancement-direction can be avoided.

Automatic-reversing tape deck

A cassette tape player-recorder of slot-in type which includes first detecting means for detecting the insertion of cassette into the slot, second detecting means for detecting correct placement of the inserted cassette at the operable position, a reset signal generator for producing a reset signal when a time longer than a predetermined period lapses from the insertion of the cassette into the slot until the correct positioning of the cassette at the operable position, and a cassette eject controller for ejecting the cassette in response to the reset signal. The cassette tape player-recorder can avoid malfunction thereof and damage of the cassette.

Cassette tape player-recorder

A device for accurately detecting non-recorded segments on a magnetic tape in fast-forward and rewind modes. The output of a magnetic head is coupled through an equalizer amplifier and limiter amplifier to convert it to a digital pulse signal which is applied to the clear input of a counter the clock input of which is coupled to an oscillator. A higher order output bit is connected to the clock input of a flip-flop which controls solenoids for setting the fast-forward and rewind modes. When no pulses of the digital pulse signal are received within a predetermined period, indicative of the presence of a non-recorded segment, the counter produces an output signal which operates the flip-flop.

Growing community of inventors

Kawagoe, Japan

Shouzaburou Sakaguchi