摘要:
A disc-shaped recording medium is used in a recording/reproducing apparatus in which a light beam is arranged to scan along a groove formed as a concentrical or spiral recording track, to record or reproduce data. Additional data which has preeviously been recorded on the disc-shaped recording medium in the shape of irregularities, such as address data indicating each recording track, is previously recorded within the groove in the shape of substantially sinusoidal irregularities of an amplitude which is smaller than the depth of the groove. Thus, if new data is recorded over the additional data, it is possible to easily separate the additional data and the newly-recorded data from each other during reproduction, so that the recording density can be improved.
摘要:
A cartridge for housing a recording medium therein. The cartridge includes a cartridge body configured such that a signal recording apparatus can record a signal onto the recording medium when the cartridge is loaded in the signal recording apparatus. The cartridge also includes an opening in the cartridge body for removing the recording medium from the cartridge body, and a cover covering the opening. An indicator on the cartridge body indicates whether the cover has ever been opened or removed from the cartridge body.
摘要:
An information on demand system provides a user of a terminal (subscriber) information through a network such as CATV such that the user pays an adequate charge to a server (information provider). According to the information on demand system, the received information can be recorded in a recording medium under control of the terminal equipment. Cases in which 1) the subscriber merely watches a program on a television receiver and; 2) the subscriber records the program and watches it by reproducing the recorded information at another time are distinguished and the subscriber is charged a different amount by the server accordingly.
摘要:
A microarray disc characterized in that a substrate is provided with a pregroove and a thin film with an excellent adherence to a probe DNA or protein is disposed at least on the pregroove, and that a liquid drop containing the probe DNA or protein is arranged on a convex part or concave part of the pregroove so that the liquid drop expands in the tangential direction of the pregroove due to the surface tension of the liquid drop and/or in the instance of concave part, due to the restriction by the concave groove wall with any expansion in the direction perpendicular to the groove, and that in the above condition, the probe DNA or protein is immobilized on the substrate.
摘要:
An optical disk apparatus includes an optical disk drive including an optical disk and an optical head, a power source for supplying electric power to the optical disk drive an apparatus casing for enclosing at least the optical disk drive and the power source, and a first air feed member having a first air passage. The first air feed member includes a first air inlet for introducing cooling air into the apparatus casing from outside of the apparatus casing so as to cool the optical disk drive, and an air filter disposed upstream of the optical disk drive in the first air passage such that the cooling air flows into the optical disk drive through the air filter. A second air feed member has a second air passage and included a second air inlet for introducing cooling air into the apparatus casing from outside of the apparatus casing so as to cool at least the power source. A partition member is provided for separating the first and second air passages from each other. The flow rate of the cooling air in the first air passage is set to such a value as to maintain the optical disk drive at a predetermined temperature or less such that the optical disk drive is not polluted with airborne dust.
摘要:
This invention relates to tracking control apparatus for a recording disc reproducing apparatus in which recorded information is successively reproduced from a disc-like recording medium, which is rotated and driven, by way of a pickup means, and the invention provides a tracking control apparatus which is hardly affected by disturbance, such as vibrations, without deteriorating information-track-tracking characteristics of the pickup means by feeding back a detected output corresponding to a displacement of the pickup means from a reference position, to a first servo loop which controls the pickup means so as to scan along an information track to be reproduced using a tracking signal corresponding to a relative position between the pickup means and the information track.
摘要:
A recording system of the type wherein the information is recorded on a spiral track on a disk-shaped recording medium, which is rotated by a signal transducer which is moved radially with respect to the recording medium. Both the rotational speed or angular velocity of the recording medium and the velocity of the radial movement of the signal transducer are so controlled, in response to the radial position of the signal transducer or the time elapsed after the recording was started, that the relative velocity of the signal transducer with respect to the recording medium may be always maintained constant.
摘要:
This resection simulation apparatus comprises a tomographic image information acquisition section (6), a memory (9) that is connected to this tomographic image information acquisition section (6), a volume rendering computer (13) that is connected to this memory (9), a display (2) that displays the computation result of this volume rendering computer (13), and an input section (4) that performs resection designation with respect to a display object displayed on this display (2). The volume rendering computer (13) samples voxel information in a direction perpendicular to the line of sight from the voxel information stored in at least the memory (9), and a depth detector (15) measures the ray casting scan distances for all points found in movement over the resection designated points.
摘要:
The present invention generally relates to optical recording/reproducing apparatus, and relates particularly to a tracking system therefor. Tracking pit rows are provided on opposite sides of an information signal recording area. The frequencies of the tracking pit rows differ from each other, such that tracking servo normalizes a detected difference in amplitude between the reproduced signals of the tracking pit rows, resulting in improved tracking accuracy.
摘要:
A cartridge for housing a recording medium therein. The cartridge includes a cartridge body configured such that a signal recording apparatus can record a signal onto the recording medium when the cartridge is loaded in the signal recording apparatus. The cartridge also includes an opening in the cartridge body for removing the recording medium from the cartridge body, and a cover covering the opening. An indicator on the cartridge body indicates whether the cover has ever been opened or removed from the cartridge body.