Pioneer Electronic Corporation

Koji Yamagishi

Naoki Masaki

Naomi Amemiya

Kunio Matsumoto

Nobuaki Hisamatsu

Junichi Yoshio

Masami Suzuki

An information reproducing system plays back a group of recording mediums each having recording information to be reproduced and TOC information with respect to the recorded information, so that the recorded information of the recording mediums can be reproduced according to the TOC Information. The TOC information of the recording mediums before the recording mediums are played back, playback operation of the recording mediums is controlled based on the read TOC information. Since it is not necessary to read TOC information each time a recording medium is replaced or a group of recording mediums is replaced, the recording mediums can smoothly be played back.

Information reproducing system identifying previously stored playback

When information to be registered is produced with respect to a new group of recording mediums, such new information is shifted and stored successively in old storage areas of a memory. Therefore, the information can be stored in the memory on a time-series bases. The times at which the information is registered can easily be determined without relying on any counter or the like. When the registered information of the recording mediums which is stored in the memory is to be used again, registered information which is newer than the registered information to be used again is shifted successively into the old storage areas, and the registered information to be used again is transferred to a newest storage area. The registered information can be stored in the order of frequency of use, and registered information which is of higher frequency of use can be stored in a newer storage area. The remaining storage capacity of the storing areas is determined, and if the remaining storage capacity is not sufficient, registered information to be erased, of the entire registered information, is determined. Registered information which is less required to be registered can be determined, and can be erased when the storage capacity is not sufficient.

Information reproducing system for reproducing a group of recording

A disc data display unit provided separately from a disc player. In the display unit is, data inherent to a disc loaded in the disc player and data arbitrarily provided by the operator are stored in a memory medium to form an electronic file, so that the data on the disk will be displayed when the disc player is operated.

Disc data display unit

An information reproducing system plays back a group of recording mediums each having recording information to be reproduced and TOC information with respect to the recorded information, so that the recorded information of the recording mediums can be reproduced according to the TOC information. The TOC information of the recording mediums are read before the recording mediums are played back, playback operation of the recording mediums is controlled based on the read TOC information. Since it is not necessary to read TOC information each time a recording medium is replaced or a group of recording medium is replaced, the recording mediums can be smoothly played back.

Information reproducing system for playing back recording mediums

Table of contents (TOC) information is read before a plurality of recording mediums, such as compact disks, each having recorded information to be reproduced and TOC information, with respect to the recorded information are played back. Playback operation of the recording mediums is controlled based on the read TOC information. Programmed information which indicates a sequence according to which the recorded information of the recorded mediums is to be reproduced is read from a programmed information memory based on the result of checking of the recording mediums. The playback operation of the recording medium is controlled by a playback control unit based on the programmed information thus read. The playback operation can immediately be controlled based on the stored programmed information. If there is new programmed information relative to the recording mediums, the playback operation of the recording mediums can be controlled according to the new programmed information by employing only the stored TOC information. Therefore, even when new programmed information is established, the playback operation can quickly be controlled.

Information reproducing system and method

Program editing method and apparatus for an information recording medium playing apparatus for playing an information recording medium carrying a plurality of music pieces and playing time information representing a playing time required for playing each of the plurality of music pieces. The plurality of music pieces are selected in order and a computing process is executed for adding up the playing time of each of the selected music pieces. Then, a provisional combination is produced by editing the selected music pieces excluding one of the selected musical programs when the total playing time obtained by the computing process exceeds a time period previously designated. Furthermore, a combination whose total playing time is the nearest to but shorter than the designated time period is derived by alternately replacing each of the music pieces in the provisional combination with each of music pieces other than the music pieces in the provisional combination. The derived combination is finally determined to be a playing program.

Program editing method and apparatus for an information recording medium

A data reproducing method, such as may be used with a compact disk player or video disk player, in which data can be reproduced between any two designated points without disagreeable rapid cut-in or cut-off of the reproduced signal. During the reproduction of the disk in a first mode, address data for first and second positions is inputted. Then, in a second reproducing mode, the main data is faded in at the first position and faded out at the second position.

Method for fading in and out reproduced digitally recorded data

A data reproducing method in which abrupt sound transitions as the end of a recorded tape is reached are eliminated. A predetermined time period corresponding to the length of the tape is inputted, and a time instant earlier by a predetermined period of time than the end of the time period at which the end of the tape is encountered is calculated. While plural pieces of music are being reproduced in a specified order for recording on the tape, a sum of the total time from the start of reproduction is iteratively calculated. When the sum reaches the calculated period of time, the total output level is gradually reduced to zero.

Growing community of inventors

Tokorozawa, Japan

Koji Yamagishi