摘要:
A method of controlling a sled motor control signal (FMO) is disclosed. First, a predetermined FMO is assigned to move a sled, and a photo signal is monitored. The FMO is off after a predetermined number of waveforms have appeared in the photo signal. Then, a position of an optical pickup is finely adjusted such that the optical pickup is at a center position of a movable range after the seeking operation.
摘要:
A holographic system and a method for retrieving data from the system. When retrieving data from the storage medium of the system, the photo-detector can retrieve correct data along the emitting direction of the signal beam by accurately calculating a reading incident angle of a reference beam and a reading out-going angle of a signal beam, and by adjusting the incident angle of the reference beam.
摘要:
A portable electronic device with a projecting function and a projecting method are provided. The portable electronic device includes a posture sensor, a projection lens, and a controller. The posture sensor is used for detecting the orientation information of the portable electronic device. The projection lens is used for projecting a source image as a projection image. The controller is electrically connected with the posture sensor and the projection lens for judging an orientation status of the portable electronic device according to the orientation information. According to the orientation status of the portable electronic device, an approach of producing the projection image is correspondingly adjusted.
摘要:
A data transmission control method for a storage device is provided. The storage device is in communication with a host through a SATA bus. The data transmission control method includes the following steps. Firstly, a X_RDY primitive is issued from the storage device to the host. After a R_RDY primitive from the host is received by the from the storage device, a first frame is transmitted to the host. After the first frame is completely transmitted and in a specified time period before a second frame is transmitted, plural SYNC primitives are issued from the storage device to the host. If the host does not issue the X_RDY primitive in the specified time period, the second frame is transmitted to the host.
摘要:
A managing method for a cache memory of a solid state drive includes the following steps. When the solid state drive decides to perform a garbage collection, a storing space of the cache memory is divided into plural storing portions. A first storing portion of the cache memory is set as a buffering unit for a garbage collection purpose. A second storing portion of the cache memory is set as a buffering unit for a writing purpose.
摘要:
A lighting apparatus is provided. The lighting apparatus comprises a base, a light cover, at least a first light emitting element, and at least a second light emitting element. The light cover having an opening is disposed on the base and together with the base forms a holding space. The first light emitting element and the second light emitting element are disposed in the holding space. The wavelength of the light emitted from the first light emitting element is different from that emitted from the second light emitting element. The light cover is movable with respect to the first light emitting element. When the light cover is moved with respect to the first light emitting element, the light flux of the first light emitting element out of the light cover is changed.
摘要:
A wireless charger with combined electric radiation shielding and capacitive sensing functions is provided. The wireless charger comprises a charging module, a capacitive sensor, and a control unit. The charging module comprises a first coil, a placing area, and a comb-shaped shielding located between the placing area and the first coil. The capacitive sensor is connected to the comb-shaped shielding to detect the capacitance varient between the comb-shaped shielding and the environment. When the wireless charger is in a standby mode, the comb-shaped shielding is for sensing capacitance. When the capacitance varient exceeds a predefined threshold and an electronic device for wireless charging is placed on the placing area, the control unit switches the wireless charger to a charging mode and the comb-shaped shielding is for electric radiation shielding.
摘要:
An optical module used in a projection device is provided. The optical module includes a base and a filter mirror. The base has an inclined leaning surface and a sidewall surface. The sidewall surface is located at a periphery of the base and forms a through hole along a direction. The inclined leaning surface is extended from the sidewall surface and an inclined angle is formed between the inclined leaning surface and the direction. The filter mirror is disposed on the inclined leaning surface.
摘要:
A controlling method of a storage device is provided. The storage device is in communication with a handheld electronic device. Firstly, a connection status is provided to the handheld electronic device from the storage device, so that the connection status is shown on the handheld electronic device. The connection status indicates that a first storage unit is connected with the storage device. Then, a specified file of the first storage unit is selected according to the connection status shown on the handheld electronic device. Then, a read command is issued from the storage device to the first storage unit, and the specified file of the first storage unit is read in response to the read command. Afterwards, the specified file is stored into the storage device, and a storing result is provided to the handheld electronic device.
摘要:
A safety protection method for a laser projection apparatus is provided. The laser scanning apparatus includes a laser source, a laser source driver, a scanning mirror, and a light-outputting port. The laser source driver is configured to drive the laser source to emit a laser beam. The safety protection method includes the following steps. Firstly, after the laser projection apparatus is powered on, an optical path of the laser beam is adjusted, so that the laser beam is not ejected out from the light-outputting port. Then, the laser source driver is disabled. Then, a judging step is performed to judge whether an intensity of the laser beam is higher than a threshold level. If the intensity of the laser beam is higher than the threshold level, the laser source is turned off.