Abstract: A teeth whitening apparatus includes a first ultrasound generator directed to emit in a first direction into a particular area, a second ultrasound generator spaced from the first ultrasound generator on a first side of the first ultrasound generator and directed to emit in a second direction angled toward the first direction into the particular area, and a third ultrasound generator spaced from the first ultrasound generator and the second ultrasound generator on a second side of first ultrasound generator and directed to emit in a third direction angled toward the first direction and the second direction into the particular area. One or more light emitting devices are spaced from the first ultrasound generator, the second ultrasound generator, and the third ultrasound generator, and directed to emit into the particular area.

Abstract: A teeth whitening apparatus includes a first ultrasound generator directed to emit in a first direction into a particular area, a second ultrasound generator spaced from the first ultrasound generator on a first side of the first ultrasound generator and directed to emit in a second direction angled toward the first direction into the particular area, and a third ultrasound generator spaced from the first ultrasound generator and the second ultrasound generator on a second side of first ultrasound generator and directed to emit in a third direction angled toward the first direction and the second direction into the particular area. One or more light emitting devices are spaced from the first ultrasound generator, the second ultrasound generator, and the third ultrasound generator, and directed to emit into the particular area.

Abstract: A computer power backup system and device are provided. When power to a computer system is lost, a battery backup unit provides power to the computer system for a while, allowing a power management control to send out an alert to an enterprise client so as to urge immediate action. If the power outage persists without being solved, and the power management control detects insufficient power in a battery of the battery backup unit, the power management control will store data in a storage device automatically and safely and then shut down the computer system. When power is restored, the power management control turns on the computer system automatically and begins charging the battery of the battery backup unit. Through the above operation, the integrity and safety of data in the computer system are secured.

Abstract: A computer power backup system and device are provided. When power to a computer system is lost, a battery backup unit provides power to the computer system for a while, allowing a power management control to send out an alert to an enterprise client so as to urge immediate action. If the power outage persists without being solved, and the power management control detects insufficient power in a battery of the battery backup unit, the power management control will store data in a storage device automatically and safely and then shut down the computer system. When power is restored, the power management control turns on the computer system automatically and begins charging the battery of the battery backup unit. Through the above operation, the integrity and safety of data in the computer system are secured.

Abstract: A system for whitening teeth is provided. The system includes a whitening composition including an oxidizing compound for application onto teeth of a user. A cheek retractor for opening lips of a user to facilitate application of the whitening composition onto teeth of a user is included in the system. A light source is adjustably or removably connectable to the cheek retractor for shining light onto teeth of a user. A device for irradiating the surface of teeth and a method for whitening teeth are also provided.

Abstract: A real-time rich media recording system. The system includes a capture module, a recording module and a random access module. The recording module real-time records a rich media source captured by the capture module as digital data. The recording module constructs a rich media relational table, and inserts an event label into the rich media relational table in response to an action instruction. The random access module stops the recording process of the recording module in response to an interrupt instruction, locates a location in the digital data, disables the event labels located after the location in the rich media relational table, and reinstates the recording module to record the rich media source at the position following the location in the digital data.

Abstract: A real-time rich media recording system. The system includes a capture module, a recording module and a random access module. The recording module real-time records a rich media source captured by the capture module as digital data. The recording module constructs a rich media relational table, and inserts an event label into the rich media relational table in response to an action instruction. The random access module stops the recording process of the recording module in response to an interrupt instruction, locates a location in the digital data, disables the event labels located after the location in the rich media relational table, and reinstates the recording module to record the rich media source at the position following the location in the digital data.

Abstract: A control method for dynamically correcting stabilized error of a spindle motor in an optic storage device. The control method comprises the steps of: (a) At first, under the condition that the spindle motor is stable, checking a rotary speed of the spindle motor so that an initial constant offset value is acquired according to said rotary speed, (b) Reading the stabilized error of the system and determining whether the constant offset value should be corrected, (c) Then, using a control mode of section dividing and staged value to modify the constant offset value, and (d) Suppressing the stabilized error to a minimum value.