73results about How to "Reduce signal amplitude" patented technology

An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.

A structure for stabilizing the active region of the magnetic sensor comprises a hard ferromagnetic element adjacent to a biasing multilayer element placed on either side of the active region of the magnetic sensor. The biasing multilayer element includes soft ferromagnetic and anti-ferromagnetic layers such that the biasing strength applied to the active region of the magnetic sensor is tuneable by adjusting the length of the soft ferromagnetic layer or layers as well as the insertion of spacer layers between the soft ferromagnetic materials and the anti-ferromagnetic layers. The inventive structure provides longitudinal bias to the active region with improved domain control, signal amplitude and side-reading properties.

A low-differential-loss low-phase-shift high-integration-level five-level marching type ultra-wide-band numerical control attenuator is formed by a single signal channel which comprises a transmission line TL0, an 8dB attenuation module of a pai-type structure, an inductor L1, a 0-7dB combined attenuation module of a T type-bridge T type combined structure, an inductor L2, a 16dB attenuation module of a pai-type structure and a transmission TL1 in a cascaded mode in sequence based on the RF CMOS technology. An MOS tube is used as a control switch, five independent control ends controls three attenuation modules to work, an inducting network is used for phase compensation, working frequency range is Ku wave band within the attenuation range of 0-31 dB with marching length of 1dB, and 32-state low-differential-loss low-phase-shift signal amplitude attenuation can be achieved. The attenuator has the advantages of being low in differential loss, low in additional phase shift, low in production cost, small in chip area and compatible with a digital processing module, and the attenuator can be used for single-chip ultra-wide-band communication system integration.

An optical disk comprises a mark train, which has at least one shortest mark and at least one other mark, recording readable information by applying a light beam, wherein the shortest mark of the mark train have a width larger than that of the other mark.

A measurement device for measuring water concentration in an oil water mixture has a transmitter that is used to transmit a designated spectrum of microwave frequencies to a transmitting antenna and then through the oil water mixture. A separate receiving antenna is used to detect the amplitude of each frequency of the transmitted spectrum after it has interacted with the oil water mixture. The detected signal from each microwave frequency that has interacted with the fluid mixture is digitized and sent to a processing unit. The processing unit receives the digitized frequencies and identifies the microwave frequency having the lowest amplitude, or amplitudinal nadir. The microwave frequency having the lowest amplitude is then used to calculate the percentage of water in the oil water mixture.

Stable tracking control is achieved for an optical recording medium having a plurality of information recording planes. To achieve this, an optical information device comprises a light source for emitting a light beam, a focusing unit for converging the light beam emitted from the light source onto a predetermined information recording plane of an optical recording medium having a plurality of information recording planes, a beam splitting unit for splitting the light beam reflected by the optical recording medium, and a light detection unit having a light receiver that receives the light beam split by the beam splitting unit, for outputting a signal corresponding to the light intensity of the light beams received by the light receiver. A guide groove is formed on at least one of the information recording planes, and the light receiver is entirely disposed within in a map formed on the light detection unit by the light beam reflected by an information recording plane other than the predetermined information recording plane.

An overvoltage protector having a housing and at least one overvoltage limiter arranged in the housing, especially a gas-filled surge arrester (1), a suppressor diode (2) or a varistor. The functional ability and the state of the overvoltage protector can be controlled during operation by associating a monitoring component with the overvoltage limiter which detects a current (i) flowing over the overvoltage limiter component, and by providing an evaluation unit that evaluates the signal of the monitoring component.

This invention provides an ultrasonic imaging system that implements imaging by distinguishing sharply and definitely the echo components generated by scattering in a microbubble contrast medium, from the tissue harmonic components generated by nonlinear propagation of a transmitted pulse. This ultrasonic imaging system, constructed to transmit/receive ultrasonic pulses to/from a living body and form a contrast image of the inside of the living body by using the contrast-imaging microbubbles, repeats the transmitting/receiving operations four times in all, under the same transmitting/receiving focus conditions at different phase angles [(a)=0°, (b)=120°, (c)=−120°, (d)=180°] of the carrier of a transmitted pulse wave including a common envelope signal, sums up three time-series receive echo signals associated with (a), (b), (c), forms the contrast image, sums up two time-series receive echo signals associated with (a), (d), forms an image of the living body having a nonlinear pulse propagation property, and makes a superimposed display of the two kinds of images.

In the dual modulus prescaler circuit, an output terminal of the first multi-input logic gate circuit is connected to a data input terminal of a first D flip-flop circuit; output terminals of the first to (n-2)th D flip-flop circuits are, respectively, connected to data input terminals of the second to (n-1)th D flip-flop circuits; output terminals of the (n-1)th and nth D flip-flop circuits are connected to input terminals of the first multi-input logic gate circuit; the second multi-input logic gate circuit is connected to the output terminal of the (n-1)th D flip-flop circuit and receives a switching signal; and an output terminal of the second multi-input logic gate circuit is connected to a data input terminal of the nth D flip-flop circuit. Moreover, all the aforementioned connections are connections using differential signals.

The present invention provides a differential signaling system comprising: a driver circuit that transmits a differential signal; a receiver circuit that receives the differential signal; and two or more signal lines used for the differential signal to be transmitted by the driver circuit and received by the receiver circuit, wherein the driver circuit gives an arbitrary time lag between the two signals that form the differential signal before transmitting them.

Embodiments of the invention provide a display panel, a display apparatus and a driving method of the display panel, relate to the technical field of display, and aim to reduce divided voltage of routing. According to the display panel, multiple first touch signal lines are electrically connected with multiple first touch electrodes in a one-to-one correspondence manner; the first end of each first touch signal line is electrically connected with the second end of a first switch unit correspondingly arranged on the first touch electrode electrically connected with the first touch signal line;the second ends of the first touch signal lines are electrically connected with the first touch signal ends of a driving chip in the one-to-one correspondence manner; multiple second touch signal lines are electrically connected with multiple second touch electrodes in the one-to-one correspondence manner; the first end of each second touch signal line is electrically connected with the second endof a second switch unit correspondingly arranged on the second touch electrode electrically connected with the second touch signal line; and the second ends of the second touch signal lines are electrically connected with the second touch signal ends of the driving chip in the one-to-one correspondence manner.

A communication system is provided including a transceiver and an application controller to transmit and receive signals through the transceiver. An isolator which insulates and separates the transceiver and application controller includes primary and secondary side circuits insulated from each other on a substrate and a capacitive insulating means to transfer signals between the primary and second sides while insulating and separating the primary side circuit from the secondary side circuit.

Apparatus, systems and methods for reducing feedback in a hearing aid that includes a transducer configured to detect sound, a sound processor configured to process signals from the transducer, a receiver configured to receive signals outputted from the sound processor, and an acoustic feedback reduction system. The acoustic feedback reduction system is configured to provide signals to the sound processor to produce a null targeting signal steerable toward a source of feedback.

A pulse-induction type metal detector using a transmitter coil energizing pulse that selectively reduces the amplitude of background signals from conductive soils, ores and salt water. The detector can be operated with higher amplification of the received signals than conventional detectors, without driving the input amplifier into saturation. This makes it possible to detect land mines, tramp metal and gold in media whose characteristics make detection with conventional metal detectors difficult.