摘要:
Disclosed is a system for generating an output signal indicating a specific area on an optical disc. The system includes an optical pick-up head signal generator, a detecting apparatus, and an output signal generating apparatus. The optical pick-up head signal generator is used for generating an optical pick-up head signal. The detecting apparatus is used for detecting pre-recorded address information on the optical disc to generate a detection signal. Also, a output signal generating apparatus, which is coupled to the optical pick-up head signal generator and the detecting apparatus, is used for receiving the optical pick-up head signal and the detection signal to generate the output signal according to at least one of the optical pick-up head signal and the detection signal, the output signal generating apparatus not generating the output signal according to the optical pick-up head signal after a predetermined time.
摘要:
An electronic map and a method for rapidly finding a geographic location of a landmark in the electronic map will automatically shift and center the electronic map on a selected landmark to provide user the clearest surrounding route as well as rapidly acquaint the user the neighbor geographic location of the landmark.
摘要:
A power adjusting method for a pickup head accessing an optical disc. The method includes identifying a target data transfer rate utilized by the PUH for accessing the optical disc; calculating an appropriate laser power according to the target data transfer rate; and accessing the optical disc by the PUH at the target data transfer rate with the appropriate laser power.
摘要:
A method controls the access times of an optical disc end discs of the same. The method includes the following steps. First, an optical disc drive obtains the addresses of a life flag and a medium key block (MKB) by reading a private flag of an optical disc. The life flag and the MKB are used to control the access times of the optical disc. After confirming the addresses of the life flag and the MKB, the optical disc drive obtains an optical power signal to determine the power that should be used to read the MKB. When the optical disc drive uses the appropriate reading power to access the MKB, the recognizable number of access times in the 4KB data is reduced, and the medium key signal is extracted to be confirmed if it is recognizable to restate the main data.
摘要:
A track-jump control system and method are provided. The track-jump control system applied in an optical disc drive comprises a signal generator, a protection device, a velocity estimator, and a controller. The signal generator receives the signal from the PUH and generates a tracking signal and a position signal. The protection device receives the position signal and when the position signal represents the PUH pass a predetermined position of the optical disc, the protection device generates a protection signal. The velocity estimator estimates the velocity of the PUH according to the tracking signal, and then generates a velocity signal. The controller receives the velocity signal and the protection signal, protects the velocity signal according to the protection signal, and generates a control signal to control the track-jump according to the protected velocity signal.
摘要:
An electronic map with a drawing feature is provided by the invention that allows user to border an area or depict a route as a graphic drawing line on the electronic map directly and make relationship between the drawing and the electronic map, whereby the drawing will be zoomed in and out to fit with current scale of the electronic map and provide the real estate company an aid in deploying and assigning the business region.
摘要:
A power adjusting method for a pickup head accessing an optical disc. The method includes identifying a target data transfer rate utilized by the PUH for accessing the optical disc; calculating an appropriate laser power according to the target data transfer rate; and accessing the optical disc by the PUH at the target data transfer rate with the appropriate laser power.
摘要:
A proximity detecting apparatus for detecting a proximity event includes a capacitive sensing device, an auxiliary detecting device, and a controller. The capacitive sensing device is arranged for generating a capacitive sensing output. The auxiliary detecting device is arranged for detecting an operational status of an electronic device in which the capacitive sensing device is disposed and accordingly generating a status output. The controller is arranged for detecting the proximity event according to the capacitive sensing output and the status output.
摘要:
A track-jump control system and method are provided. The track-jump control system applied in an optical disc drive comprises a signal generator, a protection device, a velocity estimator, and a controller. The signal generator receives the signal from the PUH and generates a tracking signal and a position signal. The protection device receives the position signal and when the position signal represents the PUH pass a predetermined position of the optical disc, the protection device generates a protection signal. The velocity estimator estimates the velocity of the PUH according to the tracking signal, and then generates a velocity signal. The controller receives the velocity signal and the protection signal, protects the velocity signal according to the protection signal, and generates a control signal to control the track-jump according to the protected velocity signal.
摘要:
The specification disclosed a method that controls the access times of an optical disc and discs of the same. The method includes the following steps. First, an optical disc drive obtains the addresses of a life flag and a medium key block (MKB) by reading a private flag of an optical disc. The life flag and the MKB are used to control the access times of the optical disc. After confirming the addresses of the life flag and the MKB, the optical disc drive obtains an optical power signal to determine the power that should be used to read the MKB. When the optical disc drive uses the appropriate reading power to access the MKB, the recognizable number of access times in the MKB data is reduced, and the medium key signal is extracted to be confirmed if it is recognizable to restore the main data.