Nikon Corporation

Satoru Sanada

Mikiya Tanaka

Hiroya Ohkuma

A terminal device (electronic device) includes a display which displays an image that specifies data, a touch panel which is disposed on the display and detects a contact of an object, a transmission operation detection unit which, when the display displays the image that specifies data, detects that a transmission operation has been performed with respect to the data if the touch panel detects a contact that continues over at least a predetermined distance and is in a predetermined direction, and a data transmission unit which, when the transmission operation detection unit detects the transmission operation, transmits the data to another electronic device.

Electronic device and method of data transmission

An optical disk playback and recording device has a control unit which alternately allocates sequential logical addresses between single or multiple continuous sectors on each side of a two-sided optical disk with disk regions divided into tracks having sectors. The device also has first and second playback and recording heads, one disposed on each side of the disk, playing back data from or recording data to sectors identified by the logical addresses of data for playback or recording. Such a device achieves increased data transmission speeds by allowing access to data occupying alternately located sectors on each side of the optical disk by both the first and second heads. The control unit also controls access to such an optical disk. Where the optical disk playback and recording device has a higher playback and recording frequency for tracks located toward the periphery of the disk, the device can achieve both uniform and increased data transmission speeds. The device has a control unit alternately allocating sequential logical addresses to a varying number of continuous sectors between sectors in tracks located toward the center of one side of the disk and sectors in tracks located toward the periphery of the other side of the disk. The control unit also controls access to such an optical disk.

Optical disk playback and recording device which alternately allocates

A data recording method adapted for recording data on an optical disk having multiple tracks addressed as sectors on its recording surface. The method includes, setting the number of sectors to be recorded on a track based the position of the track on the optical disk and recording data on the track based on the number of sectors to be recorded as set during the setting step. Also provided is an optical disk recording method adapted for recording data on an optical disk having spiral shaped multiple tracks addressed as sectors on its recording surface and the number of sectors per track of the multiple tracks depending on the radial position of the track relative to a center position of the optical disk. The method includes initializing at least one sector writing data onto the initialized sectors and verifying the written sectors. Also provided is an optical disk recording device that includes an optical disk drive device recording data in relation to an optical disk having multiple tracks addressed as sectors, a memory unit storing the data to be recorded on the optical disk, a recording control unit reading and outputting to the optical disk drive device, memory unit, and a setting circuit changing a specified amount of data depending on the radial position on the optical disk onto which the data is to be recorded. Finally, an optical disk recording device is provided which includes an optical disk drive device recording data in relation to an optical disk, a memory unit storing data to be recorded on the optical disk, a recording control circuit controlling the optical disk drive device, by initializing the specified number of sectors to be recorded on the optical disk, reading the data in an amount equivalent to the specified number of sectors among the sectors stored in the memory unit, writing that data onto the sectors that have been initialized and verifying the written sectors. Also, a setting circuit sets the specified number of sectors to be processed by a single recording operation.

Optical disk recording method and device

In an optical disc device, a plurality of heads provided with actuator means for inclining the direction of application of a beam applied to the surface of a disc within a predetermined range are secured onto a slider movable in the radial direction of the disc, and provision is made of detecting means for detecting the positions or the tracking errors of the beams of the plurality of heads, and slider control means for position-controlling the slider on the basis of the detection signal of the detecting means so that the directions of application of the beam spots by the actuator means are in a predetermined relation.

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Yokohama, Japan

Satoru Sanada