Canon Kabushiki Kaisha

Toshihiko Nakajima

Hiroo Edakubo

Kiyoshi Kumagai

Osamu Nagatsuka

Makoto Fujiki

Junji Kobayashi

Hidetoshi Matsuoka

Tatsuzo Ushiro

Akira Tomitaka

Shoichi Ibaraki

Takeshi Kawabe

The invention relates to a disk recording apparatus for recording image data obtained by photographing an object image on a disk, a disk recording method and a program. When completion of photographing, if recording image data onto a disk is not still completed, a notice is made to the effect that image data is being recorded onto the disk.

Disk recording apparatus, calculating the predicted time until recording is completed on a disk-shaped recording medium

A signal recording apparatus is arranged to record main information in a first area provided in each of a multiplicity of parallel tracks formed on a tape-shaped recording medium, and an index signal in a second area of each of a predetermined number of continuous tracks, the second area being provided separately from the first area within each of the multiplicity of parallel tracks. The apparatus records, as the index signal, first index information in a first section within the second area of each of the predetermined number of continuous tracks, with either one of binary data being repeated continuously during a period corresponding to the first section, and second index information in a second section within the second area of each of the predetermined number of continuous tracks, the second index information including track data indicative of relation to a specific track among the predetermined number of continuous tracks. In the above-described arrangement, it is possible to increase the speed of search for a specific track by using the first index information and to improve the accuracy of search for the specific track by using the second index information.

Device and method for recording and reproducing image information

An electronic apparatus adapted for use of a cassette having a first recording medium and a second recording medium which differs from the first recording medium includes a detecting circuit arranged to detect whether the cassette is provided with the second recording medium and an ejecting circuit arranged to eject the cassette if the cassette is found by the detecting circuit to be not provided with the second recording medium.

Cassette device for using cassettes with and without a second recording

A rotary drum assembly is arranged so that upper and lower drums can rotate about a central shaft with respect to each other via a dynamic-pressure bearing. In the rotary drum assembly, the central shaft is press-fitted into the rotary upper drum, a sleeve which is formed so that the central shaft can be rotatably fitted thereinto is supported by the fixed lower drum, and a dynamic-pressure generating groove is formed in either one of the central shaft and the sleeve, whereby a dynamic-pressure bearing is formed between the central shaft and the sleeve.

Rotary drum assembly having dynamic-pressure generating mechanism

Information signal recording device for recording main information

In a recording or reproducing apparatus arranged to carry out recording or reproduction of a signal while keeping a magnetic tape wrapped around a rotary head drum equipped with a head, the upper cylinder of the rotary head drum is provided with a rotor core which constitutes part of a rotary transformer for carrying out signal exchange between the head and an external circuit. An elastically deformable contact is held by a holder secured to the rotor core, and includes a plurality of conductive portions, each conducting electricity between opposed faces of the elastically deformable contact, and a cutout defined in a middle portion thereof. The elastically deformable contact is pressed from opposed sides between a conductive pattern connected to the magnetic head and a conductive pattern connected to the rotor core so that it can be brought into pressure contact with both of the conductive patterns, thereby providing electrical conduction between the head and the rotor core.

Rotary head drum having a connecting member for providing electrical

Apparatus for recording or reproducing signals on a magnetic recording tape by wrapping the tape around a rotary drum unit of type including a stationary drum and a rotary drum supported by the stationary drum is provided with grooves which are formed in the stationary drum, the grooves being deeper than the depth of surface coarseness of the stationary drum and being located adjacent a point at which the tape parts from the stationary drum when the tape travels for recording or reproduction.

Rotary head drum unit with grooves or protrusions on a stationary drum

A rotary head type recording or reproducing apparatus of the type in which the recording or reproduction of signals is effected by tracing a recording medium transported in a predetermined direction with rotary heads in a direction which is at less than 90.degree. with respect to this predetermined direction. The apparatus is provided with a rewinding mode in which the above-mentioned recording medium is transported in a direction reverse to the above-mentioned predetermined direction without performing the recording or reproduction of signals, with the rotary heads being in the condition where they can trace the recording medium. In this rewinding mode, the rotary heads are rotated in a direction reverse to their rotating direction during the recording or reproduction of signals.

Growing community of inventors

Kanagawa, Japan

Toshihiko Nakajima