Yamaha Corporation

Yutaka Ishimura

Kenichiro Takeshita

Morihiro Murata

Masaya Kano

Atsushi Usui

Hiroyuki Ichi

A connection confirmation system includes a connection detection apparatus and an information processing apparatus communicable with each other. The connection detection apparatus acquires a setting relating to a connection mode of a device to be connected to a sound processing apparatus, detects a connection mode of a device actually connected to the sound processing apparatus, and determines a difference between the detected actual connection mode and the connection mode indicated by the acquired setting.

Connection confirmation system, connection detection apparatus, and connection confirmation method

An optical disk has a recording surface which is divided in the radial direction of the optical disk into a plurality of volumes. Each volume consists of a lead-in area, a program area and a lead-out area. Each of the volumes has a recording capacity which is not constant and has absolute position information recorded therein. The absolute position information consists of time information starting from a common initial value. The lead-in area, program area and lead-out area of the respective volumes is adapted to have information of the Compact Disc format recorded therein and adapted to have volume number information corresponding to the volume number thereof recorded in a predetermined position of the area. In one aspect of the invention, a part or all of the volumes has a higher recording density than a standard recording density determined by the Compact Disc format and absolute address information continuously increments from an initial value without overlapping among the respective volumes and address information is independent from the absolute address information. In another aspect of the invention, address information and absolute address information recorded in the first volume are within a range determined by the Compact Disc format and address information and absolute address information recorded in the second and subsequent volumes are larger than a value determined by the Compact Disc format.

Optical disk having plurality of volumes, recording device and reproduction device for same

Recording surface of an optical disk is segmented radially into a plurality of volumes each including a lead-in area, program area and lead-out area. In each of the volumes, information indicating presence of a succeeding volume is recorded in a main channel of the program or lead-out area. Dedicated player can receive the information indicating presence of a succeeding volume during reproduction of the first volume and thus is allowed to access the second volume. By contrast, non-dedicated or ordinary CD-ROM players have no capability to read the information indicating presence of a succeeding volume and thus is only allowed to reproduce the first volume without knowing the presence of the succeeding volume.

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Hamamatsu, Japan

Yutaka Ishimura