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41results about How to "High-quality signal" patented technology

Ultralow noise mode-locked laser and RF sinewave source

Systems, devices and methods of generating both a precision electrical timing signal as well as a precision optical timing signal. A novel, modified opto-electronic loop oscillator is used to drive a harmonic mode-locked laser. A novel opto-electronic loop has a larger “Q” factor by increasing the electrical loop oscillating frequency ω0 by using a beat note created by the selection of two optical longitudinal modes from the mode-locked laser. The beat note is detected and divided down to drive a modulator that mode-locks the laser. The frequency division stage also reduces the noise.
Owner:UNIV OF CENT FLORIDA RES FOUND INC

Tilt control method and optical disc apparatus

According to a preferred embodiment of the present invention, in order to provide a tilt control method and optical disc apparatus capable of exerting control to eliminate tilt and capable of carrying out an appropriate gap servo operation, a light gathering element positioned facing a disc recordable with a signal, and capable of gathering light irradiated from a light source as near-field light at a position where a distance to the disc constitutes a first distance is made to come into contact with the disc (step 2), and tilt is controlled with the light gathering element in contact with the disc (steps 3 to 7). As a result, tilting with respect to the disc is adjusted with the SIL in contact with the disc, tilting can be eliminated in a reliable manner, and a gap servo operation can be carried out in an appropriate manner.
Owner:SONY CORP

Signal processing system and signal processing program

A signal processing system for performing noise reduction processing on signals from an image pickup device in front of which is arranged a color filter. The system includes extracting unit for extracting a local region formed by a target region which noise reduction processing is performed and at least one or more nearby regions which exist neighborhood of the target region, Y / C separating unit for separating luminance signals and color difference signals for each of the target region and the nearby regions, selecting unit for selecting the nearby regions similar to the target region, noise estimating unit for estimating the amount of noise from the target region and the selected nearby regions, and noise reduction unit for reducing noise in the target region based on the amount of noise.
Owner:OLYMPUS CORP

Base station system for mobile communication

A base station system for mobile communication between a mobile terminal and a base station controller, the base station system utilizing a digital modem unit for receiving a signal to be transmitted to the mobile terminal from the base station controller, framing the received signal according to a frame format for transmission different than an Ethernet specified data format, the frame format being a predetermined remote RF (radio frequency) unit frame, the digital modem unit transmitting a plurality of the remote RF unit frames in series over an Ethernet using twisted pair cable, at least one remote RF unit hub receiving the remote RF unit frames transmitted by the digital modem unit and distributing the received remote RF unit frames to a plurality of remote RF units via the Ethernet using twisted pair cable, and the plurality of remote RF units producing a deframed signal by deframing the remote RF unit frames received from the remote RF unit hub, modulating the deframed signal to an RF signal, and transmitting the RF signal to the mobile terminal, wherein the remote RF unit frames are divided into a traffic frame for use in transmitting traffic data, which is transmitted and received by the mobile terminal and a control frame for use in transmitting a control address and control data, the control address differentiating the plurality of remote RF units from one another, the control data containing a command to control operation and functions of the plurality of remote RF units.
Owner:SAMSUNG ELECTRONICS CO LTD

Projection-type capacitive touch screen system time domain noise reduction method by space differentiation

The invention discloses a projection-type capacitive touch screen system time domain noise reduction method by space differentiation. The method includes the steps that (1), a plurality of identical artificial circuit processing elements and relevant selection controllers are arranged inside a touch screen control chip; (2), a reference inducing line set of any target touch screen inducing line set to be processed in a touch screen inducing line array is selected according to space distribution; (3), identical imitation processors are used for driving and reading a target sensor and a reference sensor simultanously; (4), information of the target sensor and the reference sensor is judged; (5), the steps of (2), (3) and (4) are repeated until all target inducing lines of the touch screen are processed to finish one frame; (6) according to the distribution of status values of the inducing lines of the frame, finger touch points are calculated and judged, and time or space misinformation touch points are eliminated according to former frame information; and (7), according to the state of a current frame, the step (2) is returned or other operation is performed. According to the projection-type capacitive touch screen system time domain noise reduction method by the space differentiation, the system performance can be effectively improved, and the power consumption is reduced.
Owner:TIANJIN TOUCHLEAD MICROELECTRONICS TECH

Apparatus with a Combination of a Magnetic Resonance Apparatus and a Radiotherapy Apparatus

An apparatus with a combination of a magnetic resonance apparatus is proposed. The apparatus has at least one main magnet for generating a magnetic field in an examination area for a magnetic resonance measurement and a radiotherapy apparatus which is designed for generating a particle beam. A direction of a speed of the particle beam is aligned substantially in parallel to a direction of a magnetic flux density of the magnetic field.
Owner:SIEMENS AG

Radio transmission apparatus and radio reception apparatus

Corresponding to transmission data 101, phase controller 105 is controlled to shift a phase of modulated signal 103 by 0° or 180°. Planes of polarization of modulated signals to be transmitted from antennas 106 and 107 are made different from each other corresponding to transmission data 101. The electric field strength of a signal received at antenna 108 changes corresponding to the plane of polarization, thereby voltage value 113 output from electric field strength detector 111 varies corresponding to transmission data 101, and using this variation, judged result 115 is obtained. Two results, namely, demodulated data 112 and judged result 115 are input to comparing circuit 116, whereby the reception apparatus is capable of obtaining received data 117 with high quality.
Owner:PANASONIC CORP

Videophone over cable networks

The present invention is directed to a videophone system implemented over a cable television network. The instant invention provides a videophone comprising a camera for capturing images associated with a videophone signal, a videophone unit and a set top terminal or cable modem connecting the videophone to a cable television network. Videophone signals created at the call origination site are encoded and transported to a predetermined destination over an existing cable television network. The system uses IP addresses as phone number on the network. Additionally, transport of videophone signals between different cable systems is accomplished via a high-speed long distance data network, such as, for example, a satellite network, that provides communication between the headends of the different cable television systems. The set top terminal may be a conventional subscriber terminal, a cable modem or a subscriber terminal configured to operate as a cable modem. The set top terminal provides the interface between the videophone and the cable television system. More than one videophone may be connected to a single set top terminal. Display of videophone data may be achieved using any conventional display device, including a television set or a personal computer monitor. Accordingly, the videophone system described herein takes advantage of increased bandwidth and lower cost realized by using existing cable television infrastructure and technology.
Owner:SCI ATLANTA LLC

Videophone over cable networks

The present invention is directed to a videophone system implemented over a cable television network. The instant invention provides a videophone comprising a camera for capturing images associated with a videophone signal, a videophone unit and a set top terminal or cable modem connecting the videophone to a cable television network. Videophone signals created at the call origination site are encoded and transported to a predetermined destination over an existing cable television network. The system uses IP addresses as phone number on the network. Additionally, transport of videophone signals between different cable systems is accomplished via a high-speed long distance data network, such as, for example, a satellite network, that provides communication between the headends of the different cable television systems. The set top terminal may be a conventional subscriber terminal, a cable modem or a subscriber terminal configured to operate as a cable modem. The set top terminal provides the interface between the videophone and the cable television system. More than one videophone may be connected to a single set top terminal. Display of videophone data may be achieved using any conventional display device, including a television set or a personal computer monitor. Accordingly, the videophone system described herein takes advantage of increased bandwidth and lower cost realized by using existing cable television infrastructure and technology.
Owner:SCI ATLANTA LLC

Method and apparatus for receive channel noise suppression

A noise suppression apparatus (5) for use in a receiver includes an input terminal (17) adapted to receive an inbound signal. A channel splitter (18) is coupled to the input terminal and configured to split the inbound signal into a substantially identical first signal (20) and second signal(22). A first mixer (24) coupled to the channel splitter and configured to receive the first signal, and a second mixer (30) coupled to the channel splitter and configured to receive the second signal. A first local oscillator (26) is coupled to the first mixer and configured to generate a first LO frequency signal (L01), and a second local oscillator (32) coupled to the second mixer and configured to generate a second LO frequency signal (L02), where the first LO frequency signal and second LO frequency signal differ from one another. The first mixer is configured to mix the first signal with the first LO frequency signal to create a first mixed signal, and the second mixer is configured to mix the second signal with the second LO frequency signal to create a second mixed signal. A combiner (44) is coupled to the first mixer and the second mixer and configured to combine the first mixed signal with the second mixed signal to create a noise suppressed output signal.
Owner:INTERWAVE COMM

Method and module for enhancing periodic one-dimensional bar code signal

The invention provides a method and a module for enhancing a periodic one-dimensional bar code signal. The method comprises the steps of a, determining a frame period T of a signal acquired by an analog front end, and acquiring Y frames with T as a period; B, sampling the Y frames to obtain Y sampling sequences, wherein each sequence is expressed as x[i][0], x[i][1], x[i][2]......x[i][m-1], wherein Fs=N*(1/w); c, carrying out weighting processing by use of a weighted sliding window, wherein a window sequence is w[0], w[1],......, w[m-1], carrying out weighting processing on the sampling sequence x[i] in each period, obtaining Y sequences h after weighting, wherein each sequence is expressed as h[i][0], h[i][1], h[i][2],......,h[i][m-1], i=0, 1, ..., (Y-1), h[i][j]=w[j]*x[i][j], and j=0, 1, 2, ...(m-1); d, sliding the weighted Y sequences h in step c with the period T in step a, accumulating signal sequences h in time domain to obtain a repetition-frequency accumulated signal sequence y[0], y[1], y[2],......y[m-1], wherein the formula is as shown in the description, j=0,1,......m-1; e, carrying out extraction on the sequence y in step d with the frequency of Fs/N in step b; and f, selecting a threshold G, and carrying out 1/0 judgment on the sequence b.
Owner:西安中颖电子有限公司

Semiconductor device and sensing system

A semiconductor device includes: a first substrate having a sensing portion detecting predetermined information; a second substrate having a first processing portion processing data supplied thereto from the sensing portion; and a third substrate having a second processing portion processing data supplied thereto either from the first substrate or from the second substrate.
Owner:SONY CORP
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