42results about How to "Reduce size and complexity" patented technology

Various embodiments include a multi-color micro-LED array light source that enables well-overlapped light beams of different colors. The multi-color micro-LED array light source includes a thermally conductive substrate and multiple arrays of different color micro-LEDs integrated on the thermally conductive substrate. The micro-LEDs within each array are electrically connected so that they can all be driven in unison. The multi-color array light source also includes a controller that is electrically coupled to and that drives the arrays of micro-LEDs. The controller drives the micro-LEDs in a manner that produces an output light distribution with a spatial wavelength and angular distribution that is suitable for use as a light source.

Systems and methods for reducing the complexity and size of thermal sensors, where the voltage of a thermally sensitive device is compared to a reference voltage that varies as a function of temperature, rather than being constant. One embodiment comprises a thermal sensing system including a reference voltage generator, a thermal sensor and a comparator. The reference voltage generator is configured to generate a non-constant reference voltage that varies as a known function of temperature. The thermal sensor is configured to generate a sensor voltage that also varies as a known function of temperature. The functions of the reference and sensor voltages cross at a known temperature/voltage. The comparator is configured to compare the sensor voltage and the reference voltage and to generate a comparison output signal based on the comparison of the sensor voltage and the first reference voltage. A transition in this signal indicates the reference temperature.

The invention relates in general to the field of digital cameras, especially small digital cameras. In particularly the invention relates for adjusting an aperture for mobile cameras. The adjustable aperture construction of the invention comprises two electrodes, and an electrical circuit for applying a voltage to the electrodes in order to create an electric field between the electrodes. In addition the construction comprises between the electrodes a center unit with a hole in the middle of it, the center unit being made of an electroactive material, such as dielectric material or electrostrictive polymer. The aperture can be adjusted by deforming the shape of the center unit. The shape of the center unit is advantageously deformed by the electric field created between said electrodes by said electrical circuit.

A power transmitting apparatus, such an automotive transmission, adapted to properly select transmission of or cutting-off of a driving force of the driving source to or from the wheels of a vehicle can include a torque converter having a torque amplifying function. A clutch mechanism can include a first clutch device configured to transmit the driving force to the wheels through the torque converter and a second clutch device configured to transmit the driving force without passing through the torque converter. A selecting device can control the first clutch device or the second clutch device in accordance with conditions of the vehicle including starting from a stop. An input-side measuring device can be used to measure an input-side rotational speed of the first clutch device and an output-side measuring device can be used for measuring an output-side rotational speed of the first clutch device. A slip ratio calculating device can be used to calculate the slip ratio of the first clutch device from the difference or the ratio between the rotational speed measured by the input-side measuring device and the rotational speed measured by the output-side measuring device.

A power transmitting apparatus for transmitting power from a driving source of a vehicle to its wheels can be adapted to properly select transmitting or cutting-off of the driving force of the driving source to or from the wheels. The apparatus can comprise a torque converter having a torque amplifying function; a clutch mechanism including a first clutch device operable on advancement of the vehicle and adapted to transmit the driving force of the driving source to the wheels through a power transmitting system of the torque converter and a second clutch device adapted to transmit the driving force of the driving source to the wheels without the power transmitting system of the torque converter. A selecting device can be configured to operate the first clutch device and/or the second clutch device in accordance with operation modes of the vehicle, including starting.

A method of testing figure quality of a convex mirror in which an optical quality substrate material is used. The substrate has a front convex surface that has to be polished and figured to high accuracy, typically λ/10 (HeNe), and a rear concave surface which only needs to be polished and figured to moderate surface figure accuracy, typically about 1-λ (HeNe). Three separate interferometric null tests are then carried out to produce three independent sets of optical path difference (OPD) data. Null lenses, or nulling computer generated holograms (CGHs), are designed and used as needed in each test setup so that spherical aberration is corrected. All three separate interferometric tests are either ideal null tests, or near null tests. From the three sets of OPD data, surface figure errors on the rear and front surfaces of the test optic, h₁(x_i,y_j) and h₂(x_i,y_j), are calculated as well as the OPD error OPDI(x_i,y_j) introduced by refractive index inhomogeneity in the substrate material. The rear surface is then corrected, generally using a computer-controlled polishing machine, to reduce rear surface errors h_i(x_i,y_j) to a manageably small level. The front convex surface of the test optic is then corrected to reduce surface figure error h₂(x_i,y_j) to within some specified amount. The front mirror surface can be figured to any required accuracy in spite of residual surface figure error in the rear surface, h₁(x_i,y_j), and the effects of refractive index inhomogeneity in the substrate material OPDI(x_i,y_j). The convex front surface is then coated with a reflective coating to produce the finished convex mirror.

A subsea tool assembly includes a subsea tool and a subsea drive module connected to and configured to provide drive power to the subsea tool. The subsea drive module includes a housing configured for operation in a subsea environment, an electrical motor deployed in the housing, and an electrical power supply deployed in the housing. The electrical motor is configured to rotate a magnetic coupling which is sized and shaped to magnetically engage a corresponding magnetic coupling in the subsea tool. The electrical power supply is electrically connected to and configured to provide electrical power to the motor. Rotation of the magnetic coupling rotates the corresponding magnetic coupling in the subsea tool thereby providing drive power to the subsea tool.

An UART receives asynchronous transmission serial data based on a baud-rate clock from a DTE. An MPU analyzes the data received by the UART. A baud-rate generating portion generates the baud-rate clock to be output to the UART in accordance with instructions from the MPU. A first counter measures the span of the start bit of the first character of an AT command transmitted from the DTE based on instructions from the MPU. A decoder receives a measurement result of the first counter, outputs frequency-dividing data for producing a clock for sampling the first character, and also outputs, when the rate of the start bit is more than a preset value, a flag indicating this matter. A second counter selects, in accordance with whether or not the flag is has been set, the frequency-dividing data from either the decoder or the MPU, and produces the sampling clock. A shift register receives data subsequent to the start bit of the first character based on the sampling clock from the second register, holds the received data, which data is then read by the MPU.

A method and apparatus for generating a code in an asynchronous code division multiple access mobile communication system is provided. Specifically, the method and apparatus are for use in a transmitter in a mobile communication system which has multiple code groups having inherent code indices in response to each of slots, which selects one code group from among the multiple code groups, and which generates a second synchronization code corresponding to any one slot from among multiple slots, which are included in the selected code group. The method and apparatus determine position information designating a Hadamard code necessary for generating the second synchronization code by performing the steps of (1) in response to any one slot, outputting a value, which is obtained by subtracting 1 from a code index included in the selected code group, as a binary bit row; and (2) selecting one bit row, which employs the binary bit row as an upper bit and employs a binary code “0000” as a lower bit, as position information which designates the Hadamard code.