Abstract: This invention relates to a method of controlling a Solid State Transformer (SST).

Abstract: This invention relates to a method of controlling a Solid State Transformer (SST).

Abstract: The present disclosure provides an LED lamp base and an LED bulb. The LED lamp base comprises a housing, a printed circuit board, and a common mode coil. The common mode coil is disposed on the PCB. A first groove and a second groove are configured in an inner wall of the housing. A first end of the PCB is slid in the first groove, and a second end of the PCB is slid in the second groove. A thickness of the first groove and a thickness of the second groove are matched with a thickness of the PCB. By configuring the common mode coil in the LED lamp base, the impact of a change in the inductance coefficient may be avoided, thus ensuring an ability of the common mode coil in reducing the electromagnetic interference.

Abstract: The present disclosure provides a smart LED lighting device, including an LED light-emitting unit, an LED power supply unit, a wireless unit configured to send and receive video data, a video processing and controller unit configured to transmit analyzed and processed video data to a projection unit, a projection unit configured to receive and transmit the video data to a lens unit, and a lens unit configured to project produced video data onto a screen. The present disclosure also provides a smart LED lighting system using the smart LED lighting device. The present disclosure provides lighting as well as projection functions, allowing full integration of lighting control and video projection. A wireless communication unit is used to facilitate networking so that online videos can be projected remotely. The disclosed lighting device can also act as a router to provide internet access to connected devices, enhancing user experience.

Abstract: The present disclosure provides a lighting device and related voice broadcasting systems and methods. The lighting device includes a light-emitting module configured to provide lighting, a process and control module, a memory module configured to store audio contents stored in a local memory and downloaded from the Internet, and a voice input module configured to receive voice information from users. The process and control module is configured to receive voice information from the voice input module, to recognize and determine whether the voice information is a voice command, and to send control instructions to a corresponding module according to the matched voice command. A voice output module is configured to select and play a audio content according to the control instructions sent from the process and control module.

Abstract: The present disclosure provides a lighting control system and method thereof. The lighting control system includes: a primary lighting device having a wireless module and a plurality of secondary lighting devices. The primary lighting device and the secondary lighting devices communicate with one another by power line communication (PLC). The primary lighting device is configured to receive a control signal through at least one of power lines and the wireless module, and send the control signal to the secondary lighting devices.

Abstract: The present disclosure provides smart LED lighting devices and remote video chat systems thereof. A smart LED lighting device includes an LED light-emitting unit, a power supply unit, a wireless communication unit, an audio and video processing and controller unit, a projection unit, a video acquisition unit, a voice input unit, and a voice broadcast unit. The audio and video processing and controller unit receives, parses, and processes audio and video information from the wireless communication unit, the voice input unit, and the video acquisition unit. The projection unit projects the processed video data in projectable format to a screen. The voice broadcast unit plays the processed audio information. The disclosed devices and systems can play audio and video resources from local terminal or the cloud in the Internet, perform remote video chat freely, and integrate with indoor environment, enhancing the smart home life experience.

Abstract: The present disclosure provides a lighting device and related voice broadcasting systems and methods. The lighting device includes a light-emitting module configured to provide lighting, a process and control module, a memory module configured to store audio contents stored in a local memory and downloaded from the Internet, and a voice input module configured to receive voice information from users. The process and control module is configured to receive voice information from the voice input module, to recognize and determine whether the voice information is a voice command, and to send control instructions to a corresponding module according to the matched voice command. A voice output module is configured to select and play a audio content according to the control instructions sent from the process and control module.

Abstract: The present disclosure provides a lighting control system and method thereof. The lighting control system includes: a primary lighting device having a wireless module and a plurality of secondary lighting devices. The primary lighting device and the secondary lighting devices communicate with one another by power line communication (PLC). The primary lighting device is configured to receive a control signal through at least one of power lines and the wireless module, and send the control signal to the secondary lighting devices.

Abstract: The present disclosure provides smart LED lighting devices and remote video chat systems thereof. A smart LED lighting device includes an LED light-emitting unit, a power supply unit, a wireless communication unit, an audio and video processing and controller unit, a projection unit, a video acquisition unit, a voice input unit, and a voice broadcast unit. The audio and video processing and controller unit receives, parses, and processes audio and video information from the wireless communication unit, the voice input unit, and the video acquisition unit. The projection unit projects the processed video data in projectable format to a screen. The voice broadcast unit plays the processed audio information. The disclosed devices and systems can play audio and video resources from local terminal or the cloud in the Internet, perform remote video chat freely, and integrate with indoor environment, enhancing the smart home life experience.

Abstract: The present disclosure provides a smart LED lighting device, including an LED light-emitting unit, an LED power supply unit, a wireless unit configured to send and receive video data, a video processing and controller unit configured to transmit analyzed and processed video data to a projection unit, a projection unit configured to receive and transmit the video data to a lens unit, and a lens unit configured to project produced video data onto a screen. The present disclosure also provides a smart LED lighting system using the smart LED lighting device. The present disclosure provides lighting as well as projection functions, allowing full integration of lighting control and video projection. A wireless communication unit is used to facilitate networking so that online videos can be projected remotely. The disclosed lighting device can also act as a router to provide internet access to connected devices, enhancing user experience.

Abstract: An apparatus includes: a disk; a spindle motor configured to rotate the disk; and control circuitry with a spindle motor control loop, coupled to the spindle motor, the control circuitry configured to: inject a bandwidth test frequency into the spindle motor control loop, measure an open loop gain of the spindle motor control loop, calculate, using coordinate transformations, an estimated loop bandwidth of the spindle motor control loop based at least on one iteration of the bandwidth test frequency injection and the open loop gain measurement, and generate optimum loop parameters of the spindle motor control loop.

Abstract: A disk drive is disclosed comprising a disk comprising a plurality of servo tracks defined by servo sectors recorded around the circumference of the disk at a servo sampling frequency, and a servo control system operable to actuate a head over the disk by generating a control signal applied to an actuator. A first sinusoid is injected into the servo control system and a first DC component (dc1) is measured in the control signal. A second sinusoid is injected into the servo control system and a second DC component (dc2) is measured in the control signal, wherein the second sinusoid comprises a phase offset from the first sinusoid. A resonance mode of the servo control system is measured based on dc1 and dc2.

Abstract: A disk drive is disclosed comprising a servo control system configured to control an actuator for actuating a head over a disk. Servo sectors are sampled at a servo sample frequency fs to generate a position error signal PES(k) that is filtered with a compensator to generate a first control signal u1(k). A first discrete-time sinusoid comprising a sinusoid frequency of fs+?f is added to the first control signal u1(k) to generate a second control signal u2(k). The second control signal u2(k) is applied to the actuator, and a frequency response of the actuator is determined at the frequency |?f|. The frequency response of the actuator is determined at the frequency fs+?f based at least in part on the frequency response of the actuator at the frequency |?f| and a measured signal of the servo control system when applying the second control signal u2(k) to the actuator.

Abstract: A disk drive is disclosed comprising a head and a disk comprising a plurality of servo tracks, wherein each servo track comprises a plurality of servo sectors. The disk drive further comprises control circuitry comprising a servo control system operable to actuate the head over the disk in response to the servo sectors. The disk is rotated at a first speed and the servo sectors are read at a first servo sample frequency to generate first servo samples. The disk is rotated at a second speed different from the first speed and the servo sectors are read at a second servo sample frequency to generate second servo samples. The second servo samples are processed to measure a frequency response of the servo control system proximate the first servo sample frequency.

Abstract: The present invention provides a method for preparation of frozen microwave instant food, wherein the main process is that before being cooked the ingredients are shaped (to ordinary shape or crushing, fine crushing, mashing shape) and impregnated.

Abstract: A shock detection circuit housed in an electronic device includes an output shock signal that is indicative of vibration amplitude. To compensate for vibrations that are experienced by the electronic device, the output shock signal is analyzed. The analysis of the output shock signal allows a vibration frequency of the output shock signal to be identified and used in vibration compensation.

Abstract: A terminal voltage of an actuator motor is measured while the actuator motor is in a high impedance state. An internal voltage of the actuator motor is measured, and a back-EMF voltage of the actuator motor is estimated in response to the terminal voltage of the actuator motor and the internal voltage of the actuator motor. A drive current supplied to the actuator motor is controlled in response to the estimated back-EMF.

Abstract: A terminal voltage of an actuator motor is measured while the actuator motor is in a high impedance state. An internal voltage of the actuator motor is measured, and a back-EMF voltage of the actuator motor is estimated in response to the terminal voltage of the actuator motor and the internal voltage of the actuator motor. A drive current supplied to the actuator motor is controlled in response to the estimated back-EMF.

Abstract: A shock detection circuit housed in an electronic device includes an output shock signal that is indicative of vibration amplitude. To compensate for vibrations that are experienced by the electronic device, the output shock signal is analyzed. The analysis of the output shock signal allows a vibration frequency of the output shock signal to be identified and used in vibration compensation.