Inventor

HIRAYAMA KOICHI

JP65 patents

⚠️ This page may combine multiple inventors who share the name “HIRAYAMA KOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HIRAYAMA KOICHI

TOSHIBA KK

Multilingual recording medium and reproduction apparatus

Multi-scene recording medium and apparatus for reproducing data therefrom

Multi-scene recording medium and apparatus for reproducing data therefrom

Method and apparatus of enciphering and deciphering data using keys enciphered and deciphered with other keys

Apparatus for processing compressed video signals which are be recorded on a disk or which have been reproduced from a disk

Multi-scene recording medium having data units of program information items recorded alternatingly and continuously thereon, and apparatus for reproducing data therefrom

Information recording medium on which sector data generated from ECC block is recorded, information recording apparatus for recording sector data, and information reproduction apparatus for reproducing sector data

Digital data transmitting method

Recording medium comprising a plurality of different languages which are selectable independently of each other

Apparatus and method for reproducing data from a multi-scene recording medium having data units of program information items recorded alternatingly and continuously thereon

Multi-scene recording medium and apparatus for reproducing data therefrom

Reproduction signal evaluation method

Information storage medium, information recording method, and information reproduction method

Multi-scene recording medium and apparatus for reproducing data therefrom

Method and apparatus for generating, recording and transmitting an error product code block having an improved check code arrangement

Multilingual recording medium and reproduction apparatus

Multilingual recording medium which comprises frequency of use data/history data and a plurality of menus which are stored in a still picture format

Multilingual recording medium and reproduction apparatus

Method and apparatus of enciphering and deciphering data using keys enciphered and deciphered with other keys

Multi-scene recording medium and apparatus for reproducing data therefrom

Apparatus and method for reproducing, based on parental consent, data from a multi-scene recording medium having data units of program information items alternatingly and continuously recorded thereon

Multi-scene recording medium and apparatus for reproducing data therefrom

Information recording medium on which sector data generated from ECC block is recorded, information recording apparatus for recording sector data, and information reproduction apparatus for reproducing sector data

Information recording medium on which sector data generated from ECC block is recorded, information recording apparatus for recording sector data, and information reproduction apparatus for reproducing sector data

Apparatus for generating, recording and transmitting an error product code block having an improved check code arrangement

Multilingual recording medium and reproduction apparatus

Multi-scene recording medium and apparatus for producing data therefrom

Multi-scene recording medium and apparatus for reproducing data therefrom

Multi-scene recording medium and apparatus for reproducing data therefrom

Multi-scene recording medium for alternatingly and continuously recording program information items corresponding to different views of an event, and a method and apparatus for reproducing data therefrom

Multi-scene recording medium and apparatus for reproducing data therefrom

Digital data modulation/demodulation system wherein the modulated data satisfies a minimum run number of zeros

Information recording medium on which sector data generated from ECC block is recorded, information recording apparatus for recording sector data, and information reproduction apparatus for reproducing sector data

Information recording medium on which sector data generated from ECC block is recorded, information recording apparatus for recording sector data, and information reproduction apparatus for reproducing sector data

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

Device authentication system which allows the authentication function to be changed

Secret key transfer method which is highly secure and can restrict the damage caused when the secret key is leaked or decoded

Recording medium, recording method and apparatus, and reproduction method and apparatus

Optical record carrier and method for recording and reproducing signals therefrom

Secret key transfer method which is highly secure and can restrict the damage caused when the secret key is leaked or decoded

Encrypted communication system that limits the damage caused when a secret key has been leaked

One-way data conversion apparatus and device authentication system

Digital modulation apparatus, a digital modulation method, and a recording medium therefor

Recording medium data transmission method and apparatus and data reproduction method and apparatus

Single merging bit DC-suppressed run length limited coding

Optical record carrier and method for recording and reproducing signals therefrom

Data transmission system, data recording and reproducing apparatus and recording medium each having data structure of error correcting code

Data transmission system, data recording and reproducing apparatus and recording medium each having data structure of error correcting code

TOKYO SHIBAURA ELECTRIC CO

Multi-scene recording medium wherein related data segments of simultaneously proceeding scenes are recorded alternatingly and continuously thereon

Multilingual recording medium and reproducing apparatus with automatic selection of substitutes and languages based on frequency of selections

JAPAN POLYPROPYLENE CORP

Propylene-ethylene random block copolymer and biaxially oriented multi-layer film using the same as a surface layer