Olympus Optical Company, Ltd.

Tokyo Rope Manufacturing Co., Ltd.

Kaori Ichikawa

Toshio Horiguchi

Yoshio Nakajima

Takumi Sugaya

Jun Takeuchi

Masunori Hashimoto

Noriyuki Ohtsuka

The present invention is to provide a hybrid core rope which does not require maintenance or a hybrid core rope capable of reducing a maintenance task. The hybrid core rope includes a resin solid core in which a plurality of spiral grooves is formed in the longitudinal direction on an outer peripheral surface thereof, a plurality of fiber bundles respectively spirally wound around the outer peripheral surface of the resin solid core along the plurality of spiral grooves, the fiber bundles having thickness to fill the spiral grooves, and a plurality of steel strands spirally wound around the outer peripheral surface of the resin solid core around which the fiber bundles are wound. The fiber bundles and the strands are respectively wound so as to have angles which are not parallel to each other.

Hybrid core rope

The present invention is characterized in that in a system for accessing an optical card under the control of a general-purpose operating system (OS), the directory format of the optical card is such that directory data items for various types of general-purpose OS are divided into information usable in common in a plurality of different operating systems and control information peculiar to specific operating systems, and then the information usable in common is set in a common directory area, and the control information is set in individual information areas, thereby forming data items in a general-purpose format, and that when the CPU accesses the optical card, the control information suited for the operating system running on the CPU and the data in the common directory area are extracted from the data in the directory in the general-purpose format, and then these data items are recombined into a data format suited for the directory format of the operating system, and when the optical card is written into, information usable in common in a plurality of different operating systems and control information peculiar to specific operating systems are separated from the directory data given by the operating system running on the CPU, and these data items are recombined into the directory data in the general-purpose format where the information usable in common is set in the common directory area and the control information is set in the individual information areas, and the recombined data is handed over to the optical card.

System for handling platform independent optical card by separating

A data reproducing apparatus for reproducing information recorded in at least one track formed on a recording medium. The data reproducing apparatus includes at least one track number reading device for reading out the track number of at least one track formed on the recording medium; a designating controlling device for specifying a track having a track number which cannot be read out from among the track numbers of tracks which can be read out, and for designating an information reading starting position on the track; and a data reading device for reading out information on at least one track on the basis of the information reading starting position on the track designated by the designating controlling device.

Apparatus for reproducing data from a track whose track number cannot be

An optical card of write-once type including a rectangular card-like substrate on which a number of tracks (62) are formed in parallel with each other. In each track, one or more data record sectors (65) are provided and at the same time, one or more alternative information record sectors (66) are provided. When data could not be recorded correctly in a desired data sector in a desired track, the same data is recorded again in an alternative data sector. Then, in an alternative information record sector in the desired track, there in recorded alternative information representing an address of the alternative data sector. The alternative information record sector can be made much smaller than the alternative data sector, so that user area can be utilized efficiently as compared with a known optical card in which one or more alternative data sectors are previously provided. Moreover, the alternative information is recorded in a track in which the data could not be recorded correctly, the access time can be shortened materially as compared with a known optical card in which the alternative information is recorded in a directory track.

Optical card having alternative information record region

A digital signal regeneration apparatus measures regeneration output pulses produced by binary-coding an analog signal acquired by reading information from a recording medium to regenerate a digital signal recorded on the recording medium, comprising a pulse spacing extracting circuit for extracting a pulse spacing of a binary-coded regeneration output pulse, a pulse multiple detecting circuit for detecting a multiple indicating how many times a pulse spacing the pulse spacing extracting circuit extracts is larger than a reference cycle, a reference cycle calculating circuit for calculating a new reference cycle using the pulse spacings and multiples of a plurality of predetermined contiguous regeneration output pulses sent from the pulse spacing extracting circuit and pulse multiple detecting circuit, a clock generating circuit for generating a demodulating clock using the reference cycle the reference cycle calculating circuit calculates, a clock synchronizing circuit for synchronizing a demodulating clock the clock generating circuit generates in phase with regeneration output pulses in given durations, and synchronizing the demodulating clock in phase with a regeneration output pulse coming in a given initial range of data regeneration not by locking the demodulating clock in a given interval but by matching the demodulating clock and the regeneration output pulse coming in the given initial range, a demodulating circuit for demodulating a binary-coded regeneration output pulse train using the demodulating clock the clock generating circuit generates.

Digital signal apparatus for correctly demodulating data despite a

A fundamental period calculation circuit calculates a fundamental period in accordance with a plurality of pulses including reproduction target pulses included in binary reproduced output signal pulses sequentially input as digital signal pulses to be reproduced. A clock generator generates a demodulation clock having the fundamental period calculated by the fundamental period calculation circuit. A phase error amount detecting circuit detects a phase error amount in accordance with a phase difference between the demodulation clock generated by the clock generator and a plurality of pulses including the reproduction target pulses. A synchronizing circuit controls the phase error amount of a generation timing of the demodulation clock by the clock generator to a predetermined value in accordance with the phase error amount detected by the phase error amount detecting circuit so that the demodulation clock generated by the clock generator is synchronized with each of the reproduction target pulses. A demodulator sequentially demodulates the binary reproduced output signal pulses in accordance with the demodulation clock from the clock generator, the demodulation clock being synchronized with each of the reproduction target pulses with the predetermined phase error amount by the synchronizing circuit.

Digital signal reproducing apparatus for reducing influence by jitter

A CMD (change moduation device) control circuit in an optical card reproducing apparatus comprises a data interval detector which detects a data pit interval from a binary valued signal from a binary value converter and from a row and a column addresses generated by a row address generator and a column address generator, respectively, during scanning of a CMD sensor with a row address generator and a column address generator, a track guide column address detector for detecting a column address of a track guide from the binary valued signal by scanning the CMD sensor, and a decoder for decoding a recorded data from the data pit intervals detected by the data interval detector. In this optical card reproducing apparatus, the decoding is carried out directly from the recorded data pit intervals without moving the optical card during the reproducing operation. Thus, accurate decoding or reproducing of the data can be achieved.

Optical card reproducing apparatus for reproducing information with a

This optical recording medium includes a data part which is a region for recording data and a directory part which is a region for recording its management or direction information. The directory information relating to the above-mentioned data is recorded in the above-mentioned directory part having a hierarchical tree structure. In the recording and reproducing apparatus by using the above-mentioned recording medium, in retrieving data, by retrieving the directory information in the order of a large classification, medium classification and small classification, the data can be detected. Even a large volume of data can be retrieved at a high speed and the data is efficiently managed. It is effective particularly with recording medium with small numbers of sectors per track such as an optical card.

Optical recording medium

In a medical image filing apparatus having a store unit, a keyboard, a retrieval device, a display unit and a CPU, case images of various diseases are stored in the store unit together with clinical images, and case indexes corresponding to respective case images and clinical indexes corresponding to respective clinical images are also stored in the store unit. Therefore, the retrieval operation of the case images as well as the clinical images can be effected in an easy and swift manner, and thus it is possible to effect an accurate diagnosis for a patient.

Medical image filing apparatus

In an image filing apparatus having a reproducing mode for reproducing the already recorded image and a first recording mode for recording image signals supplied from an image pick-up device while the image supplied from the image picking-up device is always displayed on a display unit, there is provided a second recording mode in which just after an image signal is recorded on an optical disc, the thus recorded image signal is automatically read out and is displayed on the display unit for a predetermined time interval, and then the currently picked-up image is displayed on the display unit to start the recording operation of the next image. Therefore, it is possible to confirm whether or not the recorded image is correctly recorded in an easy and swift manner.

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Koganei, Japan

Kaori Ichikawa