33 results about "Distribution amplifier" patented technology

The invention consists of a method, apparatus, and data structure that allows a player remotely located from wagering devices, such as slot machines, video lottery terminals (VLTs), etc., to make wagers on the wagering devices using funds on deposit in an account. The remote player may establish a communication link to the location where the wagering devices are housed through a remote-access service. After authentication of the player's identity, the player may be provided with a menu of available wagering devices. A wagering device computer network server, preferably coupled to video cameras, may transmit the image of the selected wagering device, or as appropriate, the video output of the wagering device, through telecommunications media, to the player. A pop-up control panel on the player's remote viewing system may provide graphical representations of the game play inputs of the actual wagering device, as well as a graphical display of current funds on account. The player may deposit money from an account directly into the wagering device via software controlled by icons in the pop-up control panel. The player then operates the selected device remotely through the graphical representations of the game play inputs in the pop-up control panel. Game play proceeds as per the attributes of the wagering device. Game play records and accounting may be kept on the wagering device, and the wagering device network server. The status of the player's current amount of money on deposit in the wagering device may be displayed on the device and transmitted to the player's remote viewing system in the video broadcast process. Upon conclusion of the gaming session, any money remaining on deposit in the wagering device may be transferred to the player's account. The invention also discloses a method, apparatus, and data structure for remote gaming. This may include a video display, a control device, a video / audio distribution amplifier, a video graphic overlay board, and apparatus for linking the video display and control device.

In a cascode distributed amplifier of the present invention, a plurality of unit circuits are connected in parallel, and each unit circuit includes a pair of first and second transistors connected in series between an input transmission wire and an output transmission wire. The first transistor has a gate connected to the input transmission wire, a source grounded and a drain connected to the second transistor. The second transistor has a gate grounded, a source connected to the drain of the first transistor and a drain connected to the output transmission wire. Each unit circuit includes a damping resistor having a first end connected to the gate of the second transistor and a second end, and a capacitor having a first end connected to the second end of the damping resistor and a second end grounded.

Provided is a system for implementing gain control in an amplification module comprising a first stage amplifier having a number of first stage input and output ports. The first stage amplifier is configured to provide first stage amplification to a received input signal and produce from the amplified input signal a number of output signals. Also included are a number of second stage amplifiers, each having second stage input and output ports, the second stage input ports being respectively coupled to the first stage output ports and being configured to receive the number of output signals. A gain control device is coupled to at least one from the group including the first stage input ports, the first stage output ports, and the second stage output ports. The gain control device is also configured to control a gain of at least one of the first stage amplifier and one or more of the number of second stage amplifiers.

The invention relates to a system and a method for self time-delay calibration of a satellite navigation signal simulator. The system comprises the satellite navigation signal simulator, high-speed acquisition equipment, an isolated distribution amplifier and a calculating device, wherein the isolated distribution amplifier divides external clock signals into first channel clock signals and second channel clock signals; the satellite navigation signal simulator outputs second pulse signals and radio frequency stimulation signals with the first channel clock signals which come from the isolated distribution amplifier serving as working clocks; the high-speed acquisition equipment acquires the second pulse signals and the radio frequency stimulation signals with the second channel clock signals serving as sampling clocks; and the calculating device is used for calculating time-delay differences between initial code phases of the radio frequency stimulation signals and second pulse rising edges to obtain the time delay of the satellite navigation signal simulator. According to the system and the method, defects of oscilloscope measurement methods can be overcome, and the calibration resolution can be within 1ns.

An audio production, satellite uplink and radio broadcast studio system includes an audio console having a supporting meter bridge and editing unit operative under the control of a central or main computer. The audio console is coupled to a plurality of analog audio information sources including a plurality of microphones, a plurality of telephone lines, a radio broadcast tuner and a plurality of audio tape drives. The audio console is further coupled to a plurality of digital information sources including a pair of ISDN lines, a plurality of compact disc players, a mini-disc player and a remotely operated digital audio recorder. The computer is coupled to the audio console via an interface and sound card. The audio console is coupled to a plurality of program outputs having different program format capabilities and to a distribution amplifier operative to control the various remotely operated recording apparatus within the system.

The name of the invention is interference resistant local oscillator. With some embodiments, a VCO (voltage controlled oscillator) operates at an integer multiple (N) above a desired transmission frequency. The VCO may be phase locked at the integer or fractional multiple to a stable reference oscillator (crystal oscillator). The VCO signal may be distributed to multiple radios at the higher frequency and a divide-by-N frequency divider may be used between a distribution amplifier and a Tx / Rx so that its mixer(s) operate with a local oscillator (LO) signal at the target transmission frequency.

Provided is a system for implementing gain control in an amplification module comprising a first stage amplifier having a number of first stage input and output ports. The first stage amplifier is configured to provide first stage amplification to a received input signal and produce from the amplified input signal a number of output signals. Also included are a number of second stage amplifiers, each having second stage input and output ports, the second stage input ports being respectively coupled to the first stage output ports and being configured to receive the number of output signals. A gain control device is coupled to at least one from the group including the first stage input ports, the first stage output ports, and the second stage output ports. The gain control device is also configured to control a gain of at least one of the first stage amplifier and one or more of the number of second stage amplifiers.

A coupling device for use in a hybrid fiber coaxial (HFC) network may be configured to disable an upstream path through it when there is only noise incident on the upstream path, and enable the upstream path through it when a desired transmission from a cable modem downstream of the coupling device is incident on the upstream path. The coupling device may be a trunk amplifier, a distribution amplifier, a splitter, or the like. The coupling device may comprise a single upstream interface coupled to a plurality of downstream interfaces. The enabling and / or disabling may be in response to a signal strength indicated by the SSI being below a threshold and / or in response to one or more control messages indicating whether any downstream cable modem is, or will be, transmitting.

A system and method amplify a waveform in a wireless network. An envelope of a waveform is detected to form an envelope waveform. The envelope waveform is shaped to form a shaped waveform, the shaping based on one or more characteristics of a distributed amplifier. The shaped waveform is filtered to form a filtered waveform. The filtered waveform is amplified to form a first amplified waveform. The distributed amplifier amplifies at least a part the waveform based on the first amplified waveform to form a second amplified waveform.

The invention belongs to the steel works sintering machine nose tail temperature measuring technical field, in particular relates to a sintering machine infrared imaging temperature measuring system. The system comprises two high temperature detecting instruments which are respectively arranged at the nose and tail, a field control box and a voltage-stabilized source which are connected with the high temperature detecting instrument by virtue of a power wire as well as a video distribution amplifier, a monitor, an industrial controlling machine and a display which are connected with the high temperature detecting instrument by virtue of a video wire; wherein the high temperature instrument is internally provided with a special infrared camera and an infrared pick-up lens, and the industrial controlling machine is internally provided with sintering image temperature analysis system software. The special infrared camera adopts infrared camera with ultra-low illumination, an the infrared pick-up lens adopts a wide angle high temperature resistant lens. The video distribution amplifier is connected with the industrial controlling machine by an RS-485 communication card. The invention has the advantages that: temperature change at the nose and tail can be timely and visually observed, one time slot or the temperature in the time slot can be record, and direct basis can be provided for user production and for solving related problem.

A novel subway platform shielding and dimming liquid crystal glass image displaying system comprises a dimmable liquid crystal glass window, a dimming system control box, a player and multiple projectors. An infrared induction module is mounted at one end in a vehicle incoming direction. The infrared induction module is connected with the signal input end of the dimming system control box through an electric signal. The signal output end of the dimming system control box is respectively connected to the dimmable liquid crystal glass window and the player respectively through electric signals. The dimmable liquid crystal glass window is disposed on an advertising column on one side of a station. The projectors are arranged on the other side opposite to the advertising column. Video signals output by the player are connected to the projectors after passing a signal distribution amplifier and a circuit extender. The novel subway platform shielding and dimming liquid crystal glass image displaying system has the advantages of high resolution, large viewing angle, environment protection, no radiation, low energy consumption and the like.

The invention discloses a multi-channel video acquisition and processing device for teaching, comprising a video processing module (VPSS), a video input module (VI), a video output module (VO), a video encoding module (VNEC), and a video decoding module (VDEC), the video processing module is electrically connected with a video input module, a video output module, a video encoding module, a video decoding module, a video multiplexing module and a demultiplexing module, respectively, and the video processing module is connected with a video distribution amplifier, so The video input module includes an SDI video capture chip and a VGA capture chip, and the encoding module includes a rate controller (RC) and an encoder (Encoder). The equipment has low cost, simple construction and small maintenance workload.

The invention mainly relates to the technical field of frequency measurement, and provides a multi-path phase comparison measurement system and method. The system mainly comprises a first output module used for outputting a reference frequency standard signal, a plurality of second output modules for outputting a measured frequency standard signal, a plurality of time interval counters, a frequency distribution amplifier and a data processing module. The system is mainly based on a phase comparison measurement algorithm of a phase difference measurement function of the plurality of time interval counters, phase differences between a plurality of measured frequency standard output signals and a reference frequency scale signal are measured, and the data processing module calculates to obtain daily average relative frequency deviation according to the phase difference value and calculates to obtain frequency characteristic parameters such as the relative frequency deviation, the frequency drift rate and the daily frequency stability, so that metering of long-term characteristics of frequency standards such as cesium atoms, rubidium atoms and quartz crystals is realized, and the reliability and accuracy of frequency standard calibration are improved.

The invention discloses an optical fiber phase synchronization system based on optical active compensation. The system comprises a frequency reference, a phase-locked frequency multiplier, a pulse generator, a laser, a 1 * 2 optical coupler, a scrambler, a circulator, an optical delay line, an optical fiber, a wavelength division demultiplexer, a photoelectric detector, a radio frequency amplifier, a pulse distribution amplifier, a radio frequency power divider, a phase discriminator, a time interval counter, a delay processing unit and a driving circuit. According to the invention, the phase consistency of frequency signals under the operations such as closing and restarting or optical fiber routing change can be ensured, and the phase synchronization is realized, so that the time-frequency transmission coherence is improved, and the requirements of coherent detection applications such as a distributed radar array can be met.

The invention discloses an atomic clock frequency and phase adjustment device. The atomic clock frequency and phase adjustment device includes a first isolation distribution amplifier, a frequency multiplier, a frequency integration module, a frequency divider, a frequency mixing unit loop filter and a high-stability crystal oscillator. The invention further discloses a high-resolution frequency detection device and a high-resolution phase detection device. According to the atomic clock frequency and phase adjustment device, frequency detection device and phase detection device of the invention, a homologous comparison method is utilized to perform post-frequency and phase adjustment comparison on the frequency and phase adjustment device and an HROG-5 type frequency and phase adjustment device, so that high-resolution frequency and phase detection can be completed.

The present invention is a distributing amplifier for cable TV terminal, which has its two-way port to be connected with sub-distributor via high voltage capacitor. The sub-distributor has a signal channel which is a data channel to be connected with two-way data port and a signal channel which is a TV channel to be connected with output port of TV, and the number of output port of TV should be no less than two.

The invention discloses a high-performance hydrogen clock frequency signal distribution amplifier, relating to a signal amplifier and particularly relating to improvement of the high-performance hydrogen clock frequency signal distribution amplifier. The high-performance hydrogen clock frequency signal distribution amplifier has small noise and large insulation. The high-performance hydrogen clock frequency signal distribution amplifier comprises a signal input module, signal output modules, a power module and an analog-digital (AD) sampling module. The amplifier is structurally characterized by also comprising an amplitude display module and an external serial communication interface unit. The signal input module is connected with a power divider through a pre-amplifier, and an output end of the power divider has two circuits, which respectively pass through buffer amplifiers and two signal output modules.

The invention relates to the power grid state monitoring technical field, and particularly to a power grid state monitoring device based on Beidou. An output end of a data acquisition unit is connected to an input end of a DSP data processor. An output end of the DSP data processor is connected to a data storage device. A Beidou time data acquisition unit includes a Beidou satellite bi-directional device, a high precision atomic frequency standard and a frequency division clock. The Beidou satellite bi-directional device and the high precision atomic frequency standard are used to trace the source, and then time frequency signals are sent to the frequency division clock. A time frequency analysis module includes a multichannel second signal distribution amplifier, a multichannel frequency signal distribution amplifier and a multichannel time interval counter. The multichannel second signal distribution amplifier and the multichannel frequency signal distribution amplifier are all connected to the frequency division clock. The multichannel time interval counter is connected to the multichannel second signal distribution amplifier and the multichannel frequency distribution amplifier. The time frequency analysis module is connected to the data acquisition unit. The power grid state monitoring device based on Beidou has the whole network united time scale and the data format. The monitoring efficiency is high and the accuracy is high.

The invention discloses an ocean node time service system and time service method, and the system comprises a GPS signal distribution amplifier which is used for receiving a wireless GPS signal whichcomprises time information and amplifying and outputting the wireless GPS signal, a GPS time service controller connected with the GPS signal distribution amplifier and used for receiving the wirelessGPS signals transmitted by the GPS signal distribution amplifier, extracting time information contained in the wireless GPS signal, generating a time information signal, and synchronously generatinga second pulse signal according to the time information, and converting the time information signal and the second pulse signal into a target time information signal and a target second pulse signal of a specified level and ocean node equipment connected with the GPS time service controller and used for determining the current time according to the received target time information signal and the target pulse per second signal. According to the invention, accurate time service of ocean node equipment can be realized.

The invention discloses a symmetrical low-noise isolation distribution amplification circuit, which includes a preamplification module, a gain amplification module and an output buffer module, the preamplification module includes first to fourth preamplifiers, and the gain amplification module includes first to fourth preamplifiers. The fourth gain amplifier, the output buffer module includes the first to eighth buffer amplifiers, the pre-amplification module divides the RF input signal into two and then merges them into one; The buffer module is used for energy storage; the gain amplifier module realizes secondary isolation distribution. The invention reduces the additional noise of the circuit through the operational amplifier circuit combined in a symmetrical structure, has high isolation, is easy to debug, and has low cost.

A self configuring distribution amplifier for digital video signals comprises a number of signal processing circuits disposed on a bus along a signal propagation direction. Each signal processing circuit has an input and an output, as well as an input detection circuit controlling three different switches. The positions of the switches determines whether a signal from a particular input is present on a particular output and on the bus. This allows the self configuring distribution amplifier to distribute digital video signals from a number of inputs to a number of outputs in desired combinations.

A coupling device for use in a hybrid fiber coaxial (HFC) network may be configured to disable an upstream path through it when there is only noise incident on the upstream path, and enable the upstream path through it when a desired transmission from a cable modem downstream of the coupling device is incident on the upstream path. The coupling device may be a trunk amplifier, a distribution amplifier, a splitter, or the like. The coupling device may comprise a single upstream interface coupled to a plurality of downstream interfaces. The enabling and / or disabling may be in response to a signal strength indicated by the SSI being below a threshold and / or in response to one or more control messages indicating whether any downstream cable modem is, or will be, transmitting.

The invention discloses a communication apparatus applied in a power line communication system using the hybrid fiber coaxial cable network, comprising a PLC optical network unit, a PLC main bridging amplifier, a PLC distribution amplifier and a PLC coupling device. Therefore, the PLC optical network unit needs no PLC protocol conversion of an Ethernet signal through the cable modem and a PLC modern at the position of each user, and realizes the PLC communication between the position of each user and the of the communication terminal using the PLC Ethernet signal through a method receiving the optical signal through the optical fiber from the optical transmitter and converting the optical signal into the PLC Ethernet signal corresponding to the scheduled PLC protocol and transmitting the PLC Ethernet signal to at least a position of the user through the coaxial cable.

The invention discloses an optical fiber phase synchronization system based on optical active compensation, comprising: a frequency reference, a phase-locked frequency multiplier, a pulse generator, a laser, a 1×2 optical coupler, a polarization scrambler, a circulator, and an optical delay line , optical fiber, demultiplexer, photodetector, radio frequency amplifier, pulse distribution amplifier, radio frequency power divider, phase detector, time interval counter, delay processing unit, drive circuit. The present invention can ensure that the frequency signal phases are consistent under operations such as shutdown and restart or optical fiber routing change, and realize phase synchronization, thereby improving the coherence of time-frequency transmission and meeting the requirements of coherent detection applications such as distributed radar arrays.

The present invention mainly relates to the technical field of frequency measurement, and provides a multi-channel phase comparison measurement system and method. A second output module, a number of time interval counters, a frequency distribution amplifier and a data processing module. The present invention is mainly based on the phase comparison measurement algorithm of the phase difference measurement function of multiple time interval counters. By measuring the phase difference between the output signal of multiple frequency standards to be measured and the reference frequency standard signal, the data processing module calculates the daily average value according to the phase difference value. Relative frequency deviation, and calculate frequency characteristic parameters such as relative frequency deviation, frequency drift rate, daily frequency stability, etc., so as to realize the measurement of long-term characteristics of frequency standards such as cesium atoms, rubidium atoms and quartz crystals, and improve the reliability of frequency standard calibration sex and accuracy.

A distribution amplifier with intellectual signaling comprises a first connector, a first amplifier, a second connector, a power regulator, an inductive coil, a voltage detecting circuit, a first indicating lamp, a second amplifier and a second indicating lamp. The distribution amplifier with intellectual signaling may effectively display whether the distribution amplifier operates normally or not according to the above-mentioned arrangement.

A distribution amplifier with intellectual signaling comprises a first connector, a first amplifier, a second connector, a power regulator, an inductive coil, a voltage detecting circuit, a first indicating lamp, a second amplifier and a second indicating lamp. The distribution amplifier with intellectual signaling may effectively display whether the distribution amplifier operates normally or not according to the above-mentioned arrangement.