36results about How to "Improve sensing quality" patented technology

The cognitive radio system and method uses a wideband chirp signal. A cognitive radio base station broadcasts the low power reference wideband chirp signal with bandwidth covering the sensed spectrum. At the receiver, a Fast Fourier Transform is applied to the output of a chirp signal matched filter. The filter output is fed to decision circuitry, where a threshold value is set to decide the minimum spike's amplitude to determine frequencies utilized by primary users. Using reference chirp signal and its matched filter eases sensing computational complexity and improves the quality of sensing, thereby offering enhanced cognition at the CR receiver.

A sensing device is provided. The sensing device includes a plurality of pixel groups and a readout circuit. The pixel groups are arranged on a plurality of rows and a plurality of columns to form a pixel array. The pixel groups include a first pixel group and a second pixel group which are arranged on the different rows and the same column. The readout circuit is coupled to the pixel groups. When the first pixel group is triggered to perform a readout operation to generate a first sensing signal, the second pixel group performs a coupling operation to generate a reference signal. The readout circuit performs a subtraction operation based on the first sensing signal and the reference signal to generate a first readout data corresponding to the readout operation of the first pixel group.

The invention relates to capacitive sensing system (1) for sensing an object. The capacitive sensing system (1) comprises an electrical charge providing unit (4) like an electret foil for providing a permanent electrical charge at a sensing site (6) of the object (3) and a capacitive sensor (2) comprising a sensing electrode (5) for generating a sensing signal by capacitively sensing the object (3) at the sensing site (6) of the object (3). By providing a permanent electrical charge at the sensing site (6) of the object (3), the bias between the object (3) and the sensing electrode (5) of the capacitive sensor (2) is intentionally preferentially made large, thereby increasing the sensitivity towards mechanical motions. The resulting sensing signal substantially caused by these mechanical motions between the object (3) and the sensing electrode (5) is generally larger than a signal generated substantially by an electrophysiological field.

A method of forming a solid-state image sensor is provided. The method includes the steps of forming a plurality of photosensor elements on a substrate; forming a plurality of color filters on the plurality of photosensors; forming a light blocking member between adjacent color filters; and forming a plurality of microlenses on the plurality of color filters. Each photosensor with each corresponding color filter and microlens is used for receiving an incident light of specific spectrum.

A mutual capacitive touch panel includes a first electrode layer and a second electrode layer. The first electrode layer includes a plurality of first electrode series and a plurality of second electrode series. The second electrode layer includes a plurality of electrode strips, and each electrode strip crosses the first electrode series and the second electrode series. Each first electrode series includes a plurality of first electrodes and a plurality of second electrodes electrically connected with each other, and each first electrode and a corresponding one of the second electrodes are disposed abreast and form an electrode set. Each second electrode series includes a plurality of third electrodes electrically connected with each other, and each electrode set and each third electrode are arranged alternately along a direction.

A capacitive sensing device is provided. A control circuit adjusts a capacitance value of an adjustable capacitor unit according to a digital sensing signal converted from a sensing signal by an analog-to-digital converter, such that the capacitance value of the adjustable capacitor unit approaches a background parasitic capacitor.

The cognitive radio system and method uses a wideband chirp signal for characterization of the spectra that a mobile radio may use. A cognitive radio base station broadcasts the low power reference wideband chirp signal with bandwidth covering the sensed spectrum. At the receiver, spectral resolution in the presence of white noise is achieved by cross-correlating the chirp signal with a locally generated copy of itself (i.e., matched filtering). A Fast Fourier Transform (FFT) is applied to the output of this matched filtering. The FFT output is fed to a decision circuitry, where a threshold value is set to decide the minimum amplitude of utilized frequencies. This process eases sensing computational complexity and improves the quality of sensing, thereby offering enhanced cognition at the cognitive radio receiver.

An optical apparatus comprises a light source, an optical sensing device and an optical element. The optical sensing device and the optical element are set at the same side. The optical element includes a reflector which is an arc. A light emitted by the light source can be reflected by the reflector of the optical element to the optical sensing device.

A planar light source module for a fingerprint recognition apparatus is disclosed. A planar light source module comprises a planar light source and an optical element that includes a reflector. A planar incident light emitted by the planar light source can be reflected by the reflector of the optical element to an optical sensing device of the fingerprint recognition apparatus.

The invention provides an image sensing device. A control circuit determines the voltage change rate of the sensing signal according to the voltage value of the sensing signal generated by the light sensing unit in the estimation period, and controls the input adjusting circuit to provide the input adjusting signal to the negative input end of the operational amplifier in the exposure period according to the voltage change rate. Therefore, the signal value of the amplification signal falls within the preset range during the exposure period.

A sensor package structure includes a substrate, a sensor chip on the substrate, a ring-shaped support, a light permeable board on the ring-shaped support, and an opaque package body formed on the substrate. A top surface of the sensor chip includes a spacing region and a carrying region surrounding the spacing region. The support is disposed on the carrying region. The light permeable board has a ring-shaped notch recessed from an upper surface thereof, and the notch includes a platform surface at least partially located above the support and a wall surface connected to the platform surface and located above the spacing region. A portion of the opaque package body fills the notch and is defined as a light shielding portion. An inner lateral side of the support is arranged in a projection area formed by orthogonally projecting the platform surface onto the top surface.

The present invention provides an ultra-violet light sensing device. The ultra-violet light sensing device includes a first conductivity type substrate, a second conductivity type region, and a first conductivity type high density region. The first conductivity type substrate includes a light incident surface. The second conductivity type region is disposed in the first conductivity type substrate and adjacent to the light incident surface. The first conductivity type high density region is disposed under the second conductivity type region. The present invention also provides another ultra-violet light sensing device, which further includes a first conductivity type high density shallow region which is sandwiched between the light incident surface and the second conductivity type region. Manufacturing methods for these ultra-violet light sensing devices are also disclosed in the present invention.

The invention discloses an aluminum cabinet. The aluminum cabinet comprises a plurality of positioning components arranged on upper edges, lower edges and middle parts of the inner surfaces of two side plates. Two external main plates are respectively arranged between the two side plates. An assembly component is installed on each assembly block arranged on each of two sides of the external main plate. The assembly components are installed to the positioning components and connected to the same. An internal partition is arranged between the two side plates. A fixing component is installed on afixing block arranged on each of two sides of the internal partition. A fixing pin installed in the fixing component is installed with the positioning component and connected to the same. Accordingly, connection components are hidden after being assembled. Therefore, the visual appearance of the cabinet is more pleasant, and the sense of worth is also improved.

The invention provides an image sensing device. A light sensing unit receives a light signal including image information to generate a sensing signal. An integrator circuit performs integration operation on the sensing signal in an integration period so as to accumulate the sensing signal and generate an accumulated sensing value falling in a default range.