Abstract:
PROBLEM TO BE SOLVED: To provide a recording device, a recording method and a recording medium wherein the reliability of the recording of data can be enhanced. SOLUTION: The optimum power of a light beam is detected and the recording by using the light beam of the detected optimum power can be continued by performing power calibration in an outer power calibration area, when a power calibration area is used up.
Abstract:
PROBLEM TO BE SOLVED: To provide a recorder which improves the working efficiency in recording of recording data and a method for the same. SOLUTION: Before data D1 is recorded to an optical disk 12, power calibration is performed at the respective recording speeds assignable by a host computer 11, by which a light beam is promptly settable at the optimum power dealing with the assigned recording speed when the assigned recording speed is changed during recording of the recording data.
Abstract:
PROBLEM TO BE SOLVED: To provide a recording/reproducing device capable of preventing the erroneous recording operation and keeping the compatibility for reproduction. SOLUTION: When a disk 300 is loaded, after trial writing data are written at first into the trial writing area formed in the innermost periphery of the disk, the trial writing data are reproduced. Then, an RF signal is produced by an RF processor 210, and the wave height value Itop from a zero level of this RF signal is converted to a digital signal and supplied to a CPU 250, and the discrimination is made by the CPU 250 whether the level fluctuation of the wave eight value Itop does not exceed the preset allowable range Vth, and when it is discriminated as within the allowable range Vth, it is judged that the disk 300 is properly recognized, while it is judge that the disk 300 is erroneously recognized when discriminated as out of the allowable range.
Abstract:
PROBLEM TO BE SOLVED: To improve convenience by easily performing equalizer setting in audio equipment of an audio system connected with an IEEE1394 bus. SOLUTION: A parametric equalizer function is applied to amplifier equipment STR. Then, a personal computer can control a parametric equalizer by transmitting/receiving a CURRENT EQ control command. Concerning equalizer setting on the personal computer, by adopting a GUI, a frequency and a gain corresponding to the setting point of equalizer characteristics can be simultaneously set by drag and drop operations.
Abstract:
PROBLEM TO BE SOLVED: To execute the control of a time base direction of laser drive pulses with high accuracy with a recorder for executing recording at a higher recording rate from normal speed. SOLUTION: First delay sections (SR1...SRn) which are capable of variably controlling delay time in a relatively long unit and second delay sections (DB 1...DBn) which are capable of variably controlling the delay time in the short time unit are used in combinations, by which the control of the time base direction may be executed with the high accuracy in dealing respectively with the high-speed rates from the normal speed to an octuple speed, to a 12-times speed, etc., even if the delay gates of extremely many stages are not used.
Abstract:
PROBLEM TO BE SOLVED: To automatically manage maintenance time by allowing a host to grasp the travel distance (revolution) of each motor of a transferring part and the number of brake control times. SOLUTION: A transfer control substrate 20 is provided with a motor speed controlling part 25, an encoder pulse counter 26 and a brake controlling part. When a macro command is issued from a host controller, the part 25 outputs a speed command value, turns off the brake of a motor and also controls the motor M with current control by a servo driver 29. An encoder pulse for position detection of the motor has a pulse given to the driver 29 and the counter 26, the counter 26 counts pulses, and a CPU 21 calculates the travel distance (revolution) of the motor, manages the position of the motor and also transfers it to the host. Also, when the macro command is finished, the brake controlling part 27 brakes the motor and also eliminates current of the motor. The CPU 21 counts the number of brake execution times and transmits it to the host.
Abstract:
PROBLEM TO BE SOLVED: To accurately find the origin position of a rotating body only by simplified adjustment by respectively providing a rotating stopper section and a butting section to the rotating side and the fixing side of rotating motion and then recognizing the origin based on these sections. SOLUTION: At the time of initial setting, each axis of the horizontal and vertical axes is rotated and each butting section 430 is placed in contact with each rotating stopper section 63e. This rotation is conducted at a low speed not to give any impact force and for the control of motor, an upper limit of torque is set, the shaft is rotated with such rotating torque and whether the shaft is in contact with the stopper section 63e or not is determined by detecting no change of position within the setting time. When the butting section 340 is placed in contact with the stopper section 63e, it returns in the direction b only by 1mm and this position is recognized as the origin. Since a sensor output is not yet used, the relative positioning can be done with higher accuracy and a small error can be absorbed by changing a returning amount from the contact position.
Abstract:
PROBLEM TO BE SOLVED: To prevent one-to-one copy of digital data from an optical recording medium. SOLUTION: Recording is performed for a DVD-R medium having a groove 41 for guiding a light beam and an address pit 42. Positions of recording area in which information conforming to a DVD format is recorded along the groove 41 and destruction area in which a part of a pre-format is to be destroyed are detected, reproducible information of the DVD format is recorded in the recording area using operation of servo, and the destruction area is made an unreadable state by being destroyed by heat of the light beam. Thus, one-to-one copy of digital data is prevented. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a remote controller in which a new control program and new remote control codes are written easily and memories are extended easily, so as to reduce the cost attending specifications revisions of the remote controller. SOLUTION: The remote controller is provided with a main CPU 110 that transmits data with respect to control codes, a sub CPU 120 that converts data controlled by and sent from the main CPU 110 and generates a control signal and an infrared-emitting LED 131 that outputs the control signal. The main CPU 110 reads required format information and code information from a ROM 112, where a remote control code database 114 stored with format information and with code information is recorded and transmits them to the sub CPU 120, and the sub CPU 120 generates a control signal, on the basis of the format information and the code information. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To calculate an offset compensation amount which is given to a control amount in controlling the position of an optical head with respect to the radius direction of an optical disk, with a simple constitution. SOLUTION: In an optical disk apparatus 1, servo balance is adjusted by adding the offset compensation amount to a positional loop of a sled servo control. The servo balance is calculated at the time of shipment of the apparatus and so forth, and is preset in a memory. In the optical disk apparatus 1, a jitter of a FMDT signal obtained by demodulating a wobble signal is detected, and the offset amount for adjusting the servo balance is set to the value so that this jitter component is caused to be lowest. The jitter of the FMDT signal is calculated by counting a pulse width of the FMDT signal by an internal clock of the apparatus.