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51results about How to "Accurate ability" patented technology

Optical disk having a particular format to store user-selected data, such as video data or computer files, including a dedicated TOC region

A method of reproducing data from an optical disk having a diameter less than 140mm, a thickness of 1,2mm and a recording area divided into a lead-in area, and a program area, and wherein said data is recorded as pits representing modulated, error-correction encoded user information in sectors in user tracks in said program area and representing modulated, error-correcting encoded control information in sectors in one of said lead-in area or said program area, with said control information including addresses of respective user tracks, the tracks having a track pitch in the range of 0.646µm to 1.05µm, said method comprising the steps of rotating said disk to obtain a constant linear velocity; projecting a pickup light beam through a lens for optically reading the rotating disk, said pickup light beam having a spatial frequency I=» / 2NA, where the spatial frequency I is less than the track pitch, » is the wavelength of the pickup light beam and NA is the numerical aperture of the lens; demodulating the data read from said disk; error correcting the demodulated data; separating the error corrected data into control information and user information; and using said control information to access and read selected user tracks in response to access instructions from a user.
Owner:SONY CORP

Method and apparatus for recovering TOC and user information from an optical disk and using the TOC information to access user tracks

A method of reproducing data from an optical disk having a diameter less than 140mm, a thickness of 1,2mm and a recording area divided into a lead-in area, and a program area, and wherein said data is recorded as pits representing modulated, error-correction encoded user information in sectors in user tracks in said program area and representing modulated, error-correcting encoded control information in sectors in one of said lead-in area or said program area, with said control information including addresses of respective user tracks, the tracks having a track pitch in the range of 0.646µm to 1.05µm, said method comprising the steps of rotating said disk to obtain a constant linear velocity; projecting a pickup light beam through a lens for optically reading the rotating disk, said pickup light beam having a spatial frequency I=» / 2NA, where the spatial frequency I is less than the track pitch, » is the wavelength of the pickup light beam and NA is the numerical aperture of the lens; demodulating the data read from said disk; error correcting the demodulated data; separating the error corrected data into control information and user information; and using said control information to access and read selected user tracks in response to access instructions from a user.
Owner:SONY CORP

Evaluation system, method and program for evaluating ability

An evaluation system for evaluating ability is provided. The system includes: a) storing part for storing a plurality of problem groups, which are rated as a plurality of ranks based on difficulty levels, with associated right answers therein; b) first presenting part for presenting two or more problems of the plurality of problem groups, which are rated as a first rank, in the storing part to a user; and c) determination part for receiving answers to said two or more problems presented, to determine whether or not said received answers are correct with reference to the right answers in the storing part, and to obtain a correct answer rate based on the determination result. The system further includes d) first control part for controlling said first presenting part to use a problem group which is rated as a second rank being higher than said first rank when said correct answer rate is greater than a first threshold; e) second control part for controlling said first presenting part to use a problem group which is rated as a third rank being lower than said first rank when said correct answer rate is less than a second threshold; f) third control part for controlling said first presenting part to use problem groups rated as a plurality of ranks by repeating the control operation in the first and / or second control part twice or more; and g) an ability evaluation part for evaluating ability of said user based on said correct answer rate, which are obtained by each rank of problem group by the determination part, of the received answers.
Owner:NATIONAL UNIVERSITY
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