Pioneer Electronic Corporation

Pioneer Electronics Corporation

Masashi Tanabe

Yoshiki Furuta

Naoto Arifuku

Nobutoshi Fukuda

Shinichi Yamamisaka

Tatsuro Nagao

Masami Tsuchida

Naomi Amemiya

Tomoyasu Yamada

Takashi Kikuchi

Shiro Suzuki

Masayuki Hoshi

Tetsuro Nagao

A disk player which is capable of attaining a higher speed in its start-up for sound reproduction, in which at the time of the reproduction of a disk, the pickup moves to the starting position of the reproduced side for the disk to be reproduced after the specified side of the disk is determined when the disk number, the disk size, and the music piece number are specified. Even in case the side B of a disk has been specified, the present invention makes it possible for a disk player promptly to perform the start-up operation of each disk. Even in case any of CDs and LDs different in type is stored, the present invention enables a disk player promptly to perform the start-up operation for such a disk.

Disk player with internal conveyor for exchanging stored disks

In a stereo sound digital recording system in which a plurality of tunes or programs are sequentially and digitally recorded on a magnetic tape, the left and right analog input signals are combined and converted to a digital signal. The analog input signals are also applied to a detector which detects the head of the program or tune and which causes to be generated a start identification sub-code signal which is automatically added to the digital signal, before the modulation thereof, and which is recorded on the tape for about nine seconds in the non-sound portion preceding the tune or program. A second sub-code signal, in the form of a program number signal, may also be added to the digital signal, simultaneously with the program start identification sub-code signal, to provide recorded numbers respectively identifying programs which are sequentially recorded on the tape.

Music start signals in a magnetic recording/reproducing device

In a signal reproducing device such as an R-DAT video tape recorder, a digital signal recorded on the recording medium is reproduced by the magnetic head, stored in a memory, processed by a processing circuit, and converted into an analog signal by a D/A converter, and a detector detects whether or not the reproduction signal outputted by the head is present so that, according to the output of the detector, a muting circuit mutes the digital-to-analog converted signal and a driver suspends the operation of a level meter adapted to display the level of the digital signal, whereby the production of noise signals and the abnormal display of signal levels are prevented.

Signal reproducing device

A signal recording/reproducing apparatus having both bar-type and numeric signal-level displaying units which can be easily read. The apparatus includes a sample-and-hold circuit for sampling and holding an input signal at a first predetermined rate, a first display unit for displaying in bar form the sample values sampled by the sample-and-hold circuit, a data holding circuit for sampling and holding the sample values periodically at a second predetermined rate, and a second display unit for numerically displaying the sample values selected by the data holding circuit. The bar code display can change at a rapid rate to dynamically follow the input signal, while the numeric display changes at a slower rate so as to allow the user sufficient time to comprehend the numerically displayed value.

Signal level display device for recording/reproducing apparatus

A digital audio player in which the pieces of music are played according to a program. The program is selected so that the total playing time does not exceed a set period of time. The selection is performed by reading playing times from a disk on which are recorded both the pieces of music and their separate playing times.

Program selection for a digital audio disk

Growing community of inventors

Saitama, Japan

Masashi Tanabe