摘要:
A method of initializing a phase-change optical information recording medium is provided, using an optical system incorporating a semiconductor laser device. The laser device is characterized by a specified spatial power distribution. In a spatial distribution of the laser power focused on the recording medium, in the direction perpendicular to guide tracks the laser device preferably has less average smaller in both end regions of the spatial distribution, which have each 10% of the width at half maximum of the distribution, than the average in the center region of the full width at half maximum of the distribution.
摘要:
A method and apparatus for initializing optical recording media is provided that detects the intensity of a reflective light off of an optical recording media and analyzes the initializing condition based on the detected intensity during an initializing process. The light is radiated on a rotating phase-change optical recording medium. The light may be moved in a radial direction of the optical recording medium. The detected intensity of the reflected light may be used to identify crystallized portions and amorphous portions of the optical media. The initialization process can be adaptively controlled to ensure proper initialization. If desired, re-initialization can be limited to those areas detected to be outside of the predetermined parameters.
摘要:
An imaging parameter recording apparatus and an imaging apparatus are disclosed. The setting states of various parts of an imaging system 1 at the time of imaging are detected by a system controller 9 and routed as imaging parameters to a recording/reproducing system 2. These imaging parameters are recorded along with the imaging data on a video tape 17. This enables not only the picture corresponding to the imaging data but also the imaging parameters at the imaging time to be reproduced at the reproducing time, so that not only the past setting state-can be recognized, but also the past setting state can be newly set so that the picture of the same picture pattern can be imaged.
摘要:
Aspect ratio converting circuits store a digital signal at a first clock rate into a memory, wherein the digital signal represents a picture having a first aspect ratio. In the first mode, the digital signal is retrieved from the memory during one horizontal period on the basis of the first clock rate. In the second mode, in one horizontal period, a portion of the digital signal is retrieved on the basis of a second clock rate related to a conversion ratio between the first aspect ratio and a second aspect ratio of the picture.
摘要:
An imaging parameter recording apparatus and an imaging apparatus are disclosed. The setting states of various parts of an imaging system 1 at the time of imaging are detected by a system controller 9 and routed as imaging parameters to a recording/reproducing system 2. These imaging parameters are recorded along with the imaging data on a video tape 17. This enables not only the picture corresponding to the imaging data but also the imaging parameters at the imaging time to be reproduced at the reproducing time, so that not only the past setting state can be recognized, but also the past setting state can be newly set so that the picture of the same picture pattern can be imaged.
摘要:
A method and apparatus for initializing optical recording media is provided that detects the intensity of a reflective light off of an optical recording media and analyzes the initializing condition based on the detected intensity during an initializing process. The light is radiated on a rotating phase-change optical recording medium. The light may be moved in a radial direction of the optical recording medium. The detected intensity of the reflected light may be used to identify crystallized portions and amorphous portions of the optical media. The initialization process can be adaptively controlled to ensure proper initialization. If desired, re-initialization can be limited to those areas detected to be outside of the predetermined parameters.
摘要:
A method and apparatus for initializing optical recording media is provided that detects the intensity of a reflective light off of an optical recording media and analyzes the initializing condition based on the detected intensity during an initializing process. The light is radiated on a rotating phase-change optical recording medium. The light maybe moved in a radial direction of the optical recording medium. The detected intensity of the reflected light may be used to identify crystallized portions and amorphous portions of the optical media. The initialization process can be adaptively controlled to ensure proper initialization. If desired, re-initialization can be limited to those areas detected to be outside of the predetermined parameters.
摘要:
A digital power fluctuation detecting apparatus detects fluctuations in a power supply signal and includes a data storage device, coupled to the power supply signal, that stores predetermined digital data signals but modifies at least one stored signal if the power supply signal fluctuates; a data monitoring device that monitors the stored signals; and a power fluctuation detector that determines if the stored signals differ from the predetermined digital data signals.
摘要:
A method and apparatus for diagnosing or detecting failures or faults in or between circuits such as signal processing circuits of a video camera system. Predetermined test pattern data may be generated on a first or transmitting side (circuit) and discrimination pattern data having substantially the same data pattern as the test pattern data may be generated on a second or receiving side (circuit) in synchronism with the test pattern data. The test pattern data and the discrimination pattern data may be compared. A failure or faulty spot in or between circuits may be determined in accordance with the results of such comparison.
摘要:
An imaging parameter recording apparatus and an imaging apparatus are disclosed. The setting states of various parts of an imaging system 1 at the time of imaging are detected by a system controller 9 and routed as imaging parameters to a recording/reproducing system 2. These imaging parameters are recorded along with the imaging data on a video tape 17. This enables not only the picture corresponding to the imaging data but also the imaging parameters at the imaging time to be reproduced at the reproducing time, so that not only the past setting state can be recognized, but also the past setting state can be newly set so that the picture of the same picture pattern can be imaged.