摘要:
An information recording and reproducing method and apparatus with increased recording density of an information recording medium using the sample servo method driven with a fixed angular velocity from the innermost circumference to the outmost circumference. A disk-shaped recording medium is concentrically divided into a plurality of areas. Recording is performed with a recording density suited for the radial position of each of the areas. The width of the areas is set so that the recording capacity of a user data section sandwiched between servo sections forming a segment may increase with every transition to an outer adjacent area while taking one byte as a unit. The recording and reproducing apparatus has a clock generating circuit for servo data extraction and a clock generating circuit for user data extraction. The latter clock generating circuit is synchronized by a synchronizing pulse generated by the former clock generating circuit.
摘要:
An information recording and reproducing method and apparatus with increased recording density of an information recording medium using the sample servo method driven with a fixed angular velocity from the innermost circumference to the outmost circumference. A disk-shaped recording medium is concentrically divided into a plurality of areas. Recording is performed with a recording density suited for the radial position of each of the areas. The width of the areas is set so that the recording capacity of a user data section sandwiched between servo sections forming a segment may increase with every transition to an outer adjacent area while taking one byte as a unit. The recording and reproducing apparatus has a clock generating circuit for servo data extraction and a clock generating circuit for user data extraction. The latter clock generating circuit is synchronized by a synchronizing pulse generated by the former clock generating circuit.
摘要:
An information recording and reproducing method and apparatus with increased recording density of an information recording medium using the sample servo method driven with a fixed angular velocity from the innermost circumference to the outmost circumference. A disk-shaped recording medium is concentrically divided into a plurality of areas. Recording is performed with a recording density suited for the radial position of each of the areas. The width of the areas is set so that the recording capacity of a user data section sandwiched between servo sections forming a segment may increase with every transition to an outer adjacent area while taking one byte as a unit. The recording and reproducing apparatus has a clock generating circuit for servo data extraction and a clock generating circuit for user data extraction. The latter clock generating circuit is synchronized by a synchronizing pulse generated by the former clock generating circuit.
摘要:
An information recording and reproducing method and apparatus with increased recording density of an information recording medium using the sample servo method driven with a fixed angular velocity from the innermost circumference to the outmost circumference. A disk-shaped recording medium is concentrically divided into a plurality of areas. Recording is performed with a recording density suited for the radial position of each of the areas. The width of the areas is set so that the recording capacity of a user data section sandwiched between servo sections forming a segment may increase with every transition to an outer adjacent area while taking one byte as a unit. The recording and reproducing apparatus has a clock generating circuit for servo data extraction and a clock generating circuit for user data extraction. The latter clock generating circuit is synchronized by a synchronizing pulse generated by the former clock generating circuit.
摘要:
A novel polyimide resin is formed by imidizing a diamine component including an amide group-containing siloxane diamine compound represented by the following formula (1) and an acid dianhydride component including an aromatic acid dianhydride such as 3,3′,4,4′-diphenylsulfone tetracarboxylic dianhydride. This novel polyimide resin utilizes a novel polyimide resin into which a reaction group capable of reacting with a crosslinking agent to form a crosslinking point is pre-introduced before imidization. The novel polyimide resin can confer a comparatively low elastic modulus and heat resistance to a dry film or a photosensitive cover film formed from a photosensitive polyimide resin composition containing the novel polyimide resin. In the formula (1), R1 and R2 are each independently an optionally-substituted alkylene group, m denotes an integer of 1 to 30, and n denotes an integer of 0 to 20.
摘要:
A novel amide group-containing siloxane amine compound, which is useful as a diamine component of a polybenzimidazole resin, a polybenzoxazole resin, and particularly a polyimide resin, which is derived from an amine monomer, has a chemical structure represented by the formula (1). In the formula (1), R1 and R2 each independently represent an optionally substituted alkylene group; p denotes an integer of 0 to 3; q denotes an integer of 0 to 3; m denotes an integer of 1 to 30; and n denotes an integer of 0 to 20; provided that p and q are not 0 at the same time.
摘要:
A mobile telephone system is capable of coping with a number of different mobile radio telephone systems by a single mobile radio telephone. When a mobile radio telephone exists inside a communication area of a first mobile radio telephone system, in case when a first mobile radio telephone system flag of a first base station and an existing second mobile radio telephone system flag of a second base station coincide with each other, the mobile radio telephone is to execute a mobile radio telephone communication using an existing mobile radio telephone communication protocol software. When the first and the second mobile radio telephone system flags do not coincide with each other, as downloading of a first mobile radio telephone communication protocol software used in the first base station is completed, a mobile radio telephone communication starts. The mobile radio telephone also executes a mobile radio telephone communication after downloading a second mobile radio telephone communication protocol software.
摘要:
A control device and a control method capable of eliminating a torque variation in changing an air/fuel ratio and establishing a compatibility of promotion in fuel economy with promotion in drivability is provided. The device includes an outer environment detector for detecting an outer environment in running a vehicle, a running environment determining device for predicting a current running environment in accordance with the outer environment, a data storage device for storing data for changing a driving characteristic, a selecting device for selecting the data, a control quantity calculator for calculating a control quantity based on the data, and a control actuator for controlling a control object. The engine output is efficiently utilized since the air/fuel ratio is changed in accordance with the change in the running environment, and the fuel cost reduction and the promotion of the drivability can be achieved since the selecting of the air/fuel ratio is performed in accordance with the running environment.
摘要:
A vehicle control unit comprises an interface software memory for storing an interface software program for connecting an application software program with an operating system in an internal ROM, a central processing unit for performing computation of the application software program and the interface software program, an erasable memory for storing data such as the result of computation, an I/O unit for extending the control unit, and extending means for communicating memory data through a bus or a LAN. A single-chip micro-computer is used in vehicle control.
摘要:
In an impedance matching circuit used in a transmitter circuit, an occurrence of a reflection wave in an antenna is suppressed. The impedance matching circuit in a transmitter circuit includes a modulating circuit for modulating an input signal to output a modulation signal, a power amplifying circuit for power-amplifying the modulation signal, an antenna for outputting the signal power-amplified by the power amplifying circuit, a demodulating circuit for demodulating the signal power-amplified by the power amplifying circuit to output a demodulation signal, a band-outside-component detecting circuit for detecting a band-outside-component of the demodulation signal, a control circuit for outputting a control signal based upon the signal derived from the band-outside-component detecting circuit, and an impedance matching circuit for matching an input impedance of the antenna with an impedance of the power amplifying circuit by changing an impedance of the impedance matching circuit based upon the control signal.