Abstract: A LED driving system for a LED matrix having a plurality of LEDs connected in parallel. The LED driving system includes a plurality of driving modules. Each one of the plurality of driving modules drives a corresponding one of the plurality of LEDs. Each one of the plurality of driving modules can include a local current driver receiving a reference current and providing a driving current to the corresponding one LED, and a local current tuning module receiving a U-bit current tuning command to tune the driving current for the corresponding one LED to reach a desired driving current using the U-bit current tuning command which provides a predetermined number of tuning steps ranging from 0 to 2U.

Abstract: Embodiments are disclosed for collaboratively scanning and processing sensor data for building a map of an environment around a group of vehicles. An example an in-vehicle computing system of a vehicle includes a sensor subsystem in communication with an optical sensor, a processor, and memory storing instructions executable by the processor to instruct the optical sensor to scan an assigned region around the vehicle, receive locally scanned data corresponding to the assigned region, process the scanned data to build a first portion of a three-dimensional map, transmit the processed scanned data to at least one other vehicle, receive additional map data from the at least one other vehicle, and build a second, different portion of the three-dimensional map using the received additional map data. In a first example of the in-vehicle computing system, the optical sensor may additionally or alternatively include a Light Detection and Ranging (LiDAR) sensor system.

Abstract: Embodiments are disclosed for collaboratively scanning and processing sensor data for building a map of an environment around a group of vehicles. An example an in-vehicle computing system of a vehicle includes a sensor subsystem in communication with an optical sensor, a processor, and memory storing instructions executable by the processor to instruct the optical sensor to scan an assigned region around the vehicle, receive locally scanned data corresponding to the assigned region, process the scanned data to build a first portion of a three-dimensional map, transmit the processed scanned data to at least one other vehicle, receive additional map data from the at least one other vehicle, and build a second, different portion of the three-dimensional map using the received additional map data. In a first example of the in-vehicle computing system, the optical sensor may additionally or alternatively include a Light Detection and Ranging (LiDAR) sensor system.

Abstract: A high-strength biological scaffold and preparation method thereof. The biological scaffold is comprised of a framework of boiled-off silk woven material, the form of the framework is determined by actual needs; the framework surface is coated with a layer of silk protein scaffold material, fibroin protein/gelatin biological scaffold material or fibroin protein/collagen biological scaffold material having a thickness of 100 micrometers to 5 centimeters. The high-strength biological scaffold material has high tear resistance strength and mechanical strength and good biocompatibility, has a porous structure suitable for tissue regeneration, and can be used for preparing anal fistula repair plugs.

Abstract: The present invention relates to a steer-by-wire and independent-drive integrated wheel-side electric drive device, including a first double-rotor motor and a second double-rotor motor, fixedly arranged coaxially along an axial direction of a motor, an inner rotor of the first double-rotor motor is connected with a first drive shaft and is used for driving a wheel on one side to rotate; an inner rotor of the second double-rotor motor is connected with a second drive shaft and is used for driving a wheel on the other side to rotate; an outer rotor of the first double-rotor motor and an outer rotor of the second double-rotor motor are respectively connected with a driving gear by virtue of an output shaft.

Abstract: A vibration-proofed fan frame includes a housing and a base surrounded by the housing. A hollow tube is arranged on the base and has the rotary connection with an impeller of the heat dissipation fan. The base includes a disc and a plurality of ribs extending outwards from periphery of the disc. The fan frame further includes a buffer member within the structural interconnections between the disc and the housing. The buffer member includes first elements. The first elements are embedded in the disc. A heat dissipation fan having the fan frame described is also presented.

Abstract: A high-strength biological scaffold and preparation method thereof. The biological scaffold is comprised of a framework of boiled-off silk woven material, the form of the framework is determined by actual needs; the framework surface is coated with a layer of silk protein scaffold material, fibroin protein/gelatin biological scaffold material or fibroin protein/collagen biological scaffold material having a thickness of 100 micrometers to 5 centimeters. The high-strength biological scaffold material has high tear resistance strength and mechanical strength and good biocompatibility, has a porous structure suitable for tissue regeneration, and can be used for preparing anal fistula repair plugs.

Abstract: An off-line regulator has a rectification circuit configured to rectify an AC line voltage into a rectified line voltage, a pass device coupled between the rectified line voltage and a first capacitor, and a converter. The pass device is configured to be turned ON or OFF according to a comparison signal indicating whether the rectified line voltage is over a threshold voltage. The first capacitor delivers an interim voltage into the converter which supplies power to a load. Wherein a second capacitor coupled across a driver which driving the pass device is charged by the first capacitor when the comparison signal is at a first state, and the driver is boosted when the comparison signal is at a second state.

Abstract: A light emitting diode (LED) driver circuit controls switching of an output transistor. The LED driver circuit monitors inductor current flowing through an output inductor that is coupled to one or more LEDs. In response to detecting that the inductor current has reached a peak value, the LED driver circuit switches OFF the output transistor. The LED driver circuit switches ON the output transistor in response to detecting zero crossing of the inductor current. The LED driver circuit may detect zero crossing of the inductor current from a gate voltage of the output transistor by detecting for a negative spike.

Abstract: The present invention discloses an off-line regulator. The off-line regulator comprises a rectification circuit configured to rectify an AC line voltage into a rectified line voltage; a pass device coupled between the rectified line voltage and a first capacitor, the pass device is configured to be turned ON or OFF according to a comparison signal indicating whether the rectified line voltage is over a threshold voltage. The first capacitor delivers an interim voltage into a converter which supplies power to a load. Wherein a second capacitor coupled across a driver which driving the pass device is charged by the first capacitor when the comparison signal is at a first state, and the driver is boosted when the comparison signal is at a second state.

Abstract: A high-strength biological scaffold and preparation method thereof. The biological scaffold is comprised of a framework of boiled-off silk woven material, the form of the framework is determined by actual needs; the framework surface is coated with a layer of silk protein scaffold material, fibroin protein/gelatin biological scaffold material or fibroin protein/collagen biological scaffold material having a thickness of 100 micrometers to 5 centimeters. The high-strength biological scaffold material has high tear resistance strength and mechanical strength and good biocompatibility, has a porous structure suitable for tissue regeneration, and can be used for preparing anal fistula repair plugs.

Abstract: A light emitting diode (LED) driver circuit controls switching of an output transistor. The LED driver circuit monitors inductor current flowing through an output inductor that is coupled to one or more LEDs. In response to detecting that the inductor current has reached a peak value, the LED driver circuit switches OFF the output transistor. The LED driver circuit switches ON the output transistor in response to detecting zero crossing of the inductor current. The LED driver circuit may detect zero crossing of the inductor current from a gate voltage of the output transistor by detecting for a negative spike.

Abstract: The present invention discloses a step up circuit with output floating for driving a load such as a LED or a series of LEDs in a string. The step up circuit comprises an input port, an output port, an inductor, an input capacitor, an output capacitor, a first switch, a second switch and a third switch. The third switch S3 is an additional switch for purpose of high dimming ratio control, short circuit protection and input disconnection realization. Further, the third switch can implement an additional LDO function when the voltage at the input port is larger than the voltage across the load.

Abstract: The present disclosure discloses a low drop-out voltage regulator and an electronic device comprising the same. The present disclosure also discloses a method for converting a power supply voltage to a regulated output voltage. The low drop-out voltage regulator comprises a pass device controllable to convert a power supply voltage to a regulated output voltage; and a controller configured to receive an input signal and to provide a driving signal to the control terminal of the pass device based on the input signal, wherein when the input signal is within a predetermined range, the driving signal turns the pass device ON, and the power supply voltage charges the output voltage; and wherein when the input signal is without the predetermined range, the driving signal turns the pass device OFF, and the power supply voltage stops charging the output voltage.

Abstract: The present invention discloses a step up circuit with output floating for driving a load such as a LED or a series of LEDs in a string. The step up circuit comprises an input port, an output port, an inductor, an input capacitor, an output capacitor, a first switch, a second switch and a third switch. The third switch S3 is an additional switch for purpose of high dimming ratio control, short circuit protection and input disconnection realization. Further, the third switch can implement an additional LDO function when the voltage at the input port is larger than the voltage across the load.

Abstract: A system, method, and computer readable medium adapted to provide software and hardware partitioning for multi-standard video compression and decompression comprises a master-slave bus, a peer-to-peer bus, and an inter-processor communications bus, a prediction engine, a filter engine, and a transform engine, and a video encode control processor, and a video decode control processor adapted to utilize the master-slave bus to interact with the video hardware engines for control flow processing, the peer-to-peer bus for data flow processing, and the inter-processor communications bus for inter-processor communications, and a system data bus adapted to permit data exchange between system resources, the busses, the engines, and the processors.

Abstract: A system-on-a-chip includes a first and second power planes for respectively powering core logic and analog portions of the system. Clock generation circuitry is included for generating clocks for clocking operations of selected circuits of the system on a chip in response to a signal generated by an oscillator. Power control circuitry switches off power to the first and second power planes in a first mode, with the oscillator being enabled. In a second mode, the power control circuitry disables the clock generation circuitry and switches power to the first and second power planes, the oscillator being enabled.

Abstract: A method of operating shared memory in a multiple processor system. A token is by default maintained with a first processor, the token enabling access to shared memory. A determination is made that a second processor requires access to shared memory. A determination is also made as to whether the first processor is accessing to the shared memory. The token is transferred the second processor if the first processor is not accessing the shared memory. The second processor accesses the shared memory with the token.

Abstract: A voltage out-of-calibration detector 200 includes a voltage divider operating between first and second voltage rails and having a plurality of taps 203 for generating first and second comparison voltages. A first set of switches 205 selectively couples at least one of the plurality of taps 203 to the input of a first voltage comparator 401a, first voltage comparator 401a comparing the first comparison voltage with an input voltage and outputing a signal when the input voltage exceeds the first comparison voltage. A second set of switches 206 selectively couples at least one of the plurality of taps 203 to an input of a second voltage comparator 401b, second voltage comparator 401b comparing the second comparison voltage with the input voltage and outputing a signal when the input voltage is below the second comparison voltage. Control logic 300 selectively activates the first and second sets of switches 205/206 in response to received control signals.

Abstract: A method of processing a stream of audio information received by a multiple processor audio decoder. Processing operations are performed by a first processor on the stream of audio information to produce at set of results. The first processor writes the set of results into a shared memory and a flag is set indicating that the results are ready. In response to the flag, a second processor reads the results from shared memory. When the results have been read from shared memory, the second processor sends a command to the first processor. The first processor then clears the flag.