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Chin-Yin
Chin-Yin Huang, Taipei Hsien TW
| Patent application number | Description | Published |
|---|---|---|
| 20100236866 | STEPLADDER - A stepladder has a front frame, a rear frame, a bracket and multiple steps. The front frame has two front side rails and multiple rungs mounted between the front side rails. The rear frame is connected pivotally to the front frame and has two rear side rails, a crossbeam and a lock. The lock is mounted pivotally on the crossbeam. The bracket is connected pivotally and slidably to the rear frame and has multiple pivot pins. The steps are mounted pivotally on the bracket and are selectively and engaged respectively with the rungs of the front frame. The lock selectively hooks a pivot pin to stably lock the bracket for improved safety. | 09-23-2010 |
Chin-Yin Tsai, Junghe City TW
| Patent application number | Description | Published |
|---|---|---|
| 20100188944 | METHOD FOR CONTROLLING READ POWER AND OPEN-LOOP READ CONTROL DEVICE USING THE SAME - A method for controlling read power and an open-loop read control device using the same. The open-loop read control device is used in an optical disk writer and includes a memory, a DAC and an amplifier. The optical disk writer includes a pickup head device having a laser diode. When writing is disabled, the read power of the optical disk writer for reading the disk corresponds to a specific voltage. The memory stores a relationship curve and outputs a corresponding reference value corresponding to the specific voltage. The DAC converts the corresponding reference value into an analog corresponding reference value. The amplifier receives the analog corresponding reference value and outputs a read power control voltage, which controls the laser diode to generate a substantially constant read power in the write process. | 07-29-2010 |
Chin-Yin Tsai, Taipei TW
| Patent application number | Description | Published |
|---|---|---|
| 20080205240 | FOCUSING CONTROLLER AND METHOD THEROF FOR AN OPTICAL DISK DRIVE - A focusing controller and the method thereof for an optical disk drive. The focusing controller includes a filter, a coupler and a focus compensator. The filter filters out a high-frequency component of the track error signal and derives an adjusted signal, while the coupler eliminates the adjustment signal from the focusing error signal so as to generate a coupled signal. The focus compensator generates a focus control signal used for controlling a position of the pick up head of the optical disk drive according to the coupled signal during a focusing operation. | 08-28-2008 |
| 20090003163 | OPTICAL DISK DRIVE FOR WRITING A RE-WRITABLE OPTICAL DISK AND METHOD THEREOF - An optical disk drive of recording a re-writable optical disk and the method thereof. First, an optimum power is determined. A gain of a SBAD (Sub Beam Adder) signal is adjusted for generating an calibrated SBAD signal such that the calibrated SBAD signal maintains at the same level during a write power phase and a read power phase substantially. Then, the re-writable optical disk is recorded by using the optimum power. Next, a defect of the re-writable optical disk is detected according to the calibrated SBAD signal. Then, the optical disk drive will jump over the defect and prevent it from being data-recorded so as to avoid system malfunction. | 01-01-2009 |