32results about How to "High speed signal transmission" patented technology

An optical-electrical hybrid transmission cable (100), comprises: an insulative layer (2); a shielding layer (3) located on an inner side of the insulative layer; an optical cable (4) disposed in the shielding layer and comprising two optical fibers (41) and an insulative sheath (42) enclosing the two optical fibers; two coaxial cables (5), a power wire (6) and a grounding wire (7) disposed in the shielding layer; and a filler (8) disposed in a center of the optical-electrical hybrid transmission cable and surrounded by the two coaxial cables, the power wire, the grounding wire and the optical cable which are arranged along a circumferential direction.

The disclosed printing circuit board (PCB) is composed of two outer layers and one inner layer. The outer layer is made from plate of capable of transmitting signal in high speed; and the inner layer is made from general plate. Method for fabricating PCB includes following steps: carrying blackening / browning treatment; superimposing and pressing prepreg and outer copper foil together so as to form multilayer half finished board; drilling holes on multilayer board, plating via holes, using negative plate imaging and etching to prepare needed ducting lines in each core plate in inner layer; obtaining lines on outer layer so as to produce multilayer PCB in hybrid plates; back drilling technical holes in order to take out STUB with no connection and no attribute on end part of via holes. Features of the PCB are: high-speed signal transmission in low cost, high reliability, guaranteeing rate of good quality of PCB produced, and transmission quality of high-speed signal.

The invention discloses a three-network integrated dual-mode intelligent set top box. The three-network integrated dual-mode intelligent set top box is characterized by comprising a central processing unit, an AndroidDVB processing module, an intelligent card, a memory, a signal processing module, a camera, an audio and video input and output module, a tuner, a communication module and a network module, wherein the AndroidDVB processing module, the intelligent card, the memory, the signal processing module, the camera and the audio and video input and output module are connected with the central processing unit, the tuner is connected with the AndroidDVB processing module, and the communication module and the network module are connected with the signal processing module. The three-network integrated dual-mode intelligent set top box is compatible with traditional digital television direct transmission, on-demand unicast and other services and meanwhile has the network video playing, video call, game entertainment, family networking and other functions, and is suitable for efficiently developing data and internet services, capable of meeting three-network integrated service requirements, wide in application range and high in practicality.

The invention discloses a data acquisition serial-parallel conversion storage device and method for ensuring the effective storage of data. The data acquisition serial-parallel conversion storage device comprises a serial shift register, a first parallel shift register, a second parallel shift register, a phase locked loop (PLL) circuit, a frequency dividing circuit and a counting circuit, wherein the serial shift register, the first parallel shift register and the second parallel shift register are sequentially connected; the phase locked loop (PLL) circuit is connected with the serial shift register; the frequency dividing circuit is respectively connected with the first parallel shift register and the second parallel shift register; the counting circuit is connected with the first parallel shift register; the serial shift register receives an output signal of a receiver; the second parallel shift register is connected with a logical circuit; and the phase locked loop (PLL) circuit is respectively connected with the counting circuit and the frequency dividing circuit.

A connector has a plurality of high-speed differential signal lanes each of which includes two first contacts for high-speed differential signal transmission and two ground contacts. A second contact which does not belong to the high-speed differential signal lanes is arranged between the high-speed differential signal lanes. On a first connection side for connection with a connecting object, contacting portions of the contacts are arranged in a single row at a distance from one another. On a second connection side for connection with a mounting object, terminal portions of the first contacts and terminal portions of the ground contacts are arranged in a first row at a distance wider than that between the contacting portions while a terminal portion of the second contact is arranged in a second row.

A structure of an USB connector comprising an isolation chassis and an electric module is provided. The circuit board a plurality of interconnection-terminals and a plurality of adaptor-terminals, wherein the power wave-filter module is positioned in a positive and negative power line of the circuit board and electrically connects to a first terminal and a fourth terminal of said interconnection-terminals and the signal wave-filter module is positioned in a signal line of the circuit board and electrically connects to a second terminal and a third terminal of the interconnection-terminals so as to cancel noise generated during signal transmission.

A connector has a plurality of high-speed differential signal lanes each of which includes two first contacts for high-speed differential signal transmission and two ground contacts. A second contact which does not belong to the high-speed differential signal lanes is arranged between the high-speed differential signal lanes. On a first connection side for connection with a connecting object, contacting portions of the contacts are arranged in a single row at a distance from one another. On a second connection side for connection with a mounting object, terminal portions of the first contacts and terminal portions of the ground contacts are arranged in a first row at a distance wider than that between the contacting portions while a terminal portion of the second contact is arranged in a second row.

Provided is a transmitter circuit capable of transmitting a signal at a high speed because signal waveform distortion in an input terminal of a receiving circuit is reduced even though a transmission path has a high resistance component such as aluminum wiring and cooper wiring on a glass substrate and to provide a transmission circuit and a driving device. The transmitter circuit comprises: a non-inverting output terminal and an inverting output terminal, for outputting a signal current, which has a loop direction that changes based upon an input signal, to the non-inverting and inverting output terminals; and an output-waveform control circuit for detecting the edge of the waveform of the input signal and responding by increasing the signal current temporarily.

The invention relates to an illumination-intensity-adjustable no flickering visible light communication transmitting end controller. The controller comprises a constant current source driving circuit and a digital RLL coding module, wherein the constant current source driving circuit comprises a constant current source parameter selection device and a constant current source circuit, the digital RLL coding module comprises an RLL coding mode selection device and an RLL coding circuit, and the constant current source circuit is under the control of the constant current source parameter selection device to carry out real-time constant current parameter adjustment, and the RLL coding circuit is under the control of the RLL coding mode selection device to carry out real-time coding mode adjustment. The controller is advantaged in that real-time brightness grade adjustment on LED lamps is realized through utilizing run length limited codes and the constant current source driving circuit, no system flickering phenomenon occurs, and high-speed signal transmission can be kept.

The embodiment of the invention discloses an inner wire arranging system of a via hole type Ethernet communication sliding ring. The inner wire arranging system of the via hole type Ethernet communication sliding ring comprises rotor terminal core wires and stator terminal core wires, wherein the rotor terminal core wires correspond to conducting rings in a one-to-one mode and connected between the inner walls of the conducting rings and first communication ends respectively. The stator terminal core wires are connected between the tail ends of electric brushes and second communication terminals respectively. The rotor terminal core wires and the stator terminal core wires adopt the core wire twisting rule in eight core net wires to arrange the eight core net wires to form four twisted pairs. The color of the rotor terminal core wires connected to the inner walls of the conducting rings is identical with the color of the stator terminal core wires connected to the electric brush, wherein the electric brush and the conducting rings are in the sliding friction state. The requirement for higher data transmission rate of the Ethernet with stronger communication capability can be met.

A transceiver and a transceiver operating method are disclosed. The transceiver is coupled to a bus. The transceiver includes a receiving unit, a transmitting unit, and a detection unit. The receiving unit is coupled to the bus. The transmitting unit is coupled to the bus. The detection unit is coupled to the receiving unit and the transmitting unit respectively. The detection unit receives a first input signal, a receiver enabling signal, and a transmitter enabling signal respectively and selectively enhances the first input signal and the transmitter enabling signal according to a result of comparing the receiver enabling signal and the transmitter enabling signal. Then, the detection unit transmits the enhanced first input signal and transmitter enabling signal to the bus through the transmitting unit.

The present invention provides an integrally molded multi-light transmission sheet comprising a sheet-shaped covering portion made of plastic, and a plurality of light transmission regions that is provided inside the covering portion so as to extend along the extension direction of the covering portion and has a core region made of plastic and a cladding region made of plastic and surrounding theouter periphery of the core region, wherein the plurality of light transmission regions are arranged side by side in a row substantially parallel to each other along the main surface of the covering portion, and when the light is incident from one end face side of the plurality of light transmission regions and said light is transmitted toward to the other end face side, the M2 value of the outgoing light is 1.7 or more.

A semiconductor chip (20) having protruding electrodes (bumps) (23) on external lead-out electrodes is mounted on a wiring board (10), and a semiconductor chip (30) is mounted on the semiconductor chip (20). Between the wiring layer (12) of the wiring substrate (10) and the protruding electrodes (23) of the semiconductor chip (20), and between the protruding electrodes of the semiconductor chips (20), (30) are electrically connected by electrolytic plating. Between the wiring layer (12) and the protruding electrodes (23) and between the protruding electrodes of the semiconductor chip (20) (30) are stably connected through the plating films (24), (33).

A cable connector assembly includes: an electrical connector; a circuit board electrically connected to the electrical connector and including a first row of pads and a second row of pads located behind the first row of pads and separated from the first row of pads; and a cable electrically connected to the circuit board and including plural coaxial wires each including a center conductor and a shielding layer and plural single core wires each comprising a conductor; wherein the center conductors of the coaxial wires are soldered to the first row of pads of the circuit board, and the conductors of the single core wires and the shielding layers of the coaxial wires are soldered to the second row of pads of the circuit board.

The invention discloses a roadbed automatic driving auxiliary detection system and a control method thereof. The system comprises a millimeter-wave radar module, a main control module, a communication module, a GPS module, a cloud server and a vehicle-mounted terminal, the main control module is connected with the millimeter-wave radar module and the GPS module and controls the millimeter-wave radar module and the GPS module to work; and radar detection data and GPS data are acquired, repackaged and sent to a cloud server through the communication module. According to an existing millimeter wave radar principle, a DBCAN clustering algorithm and an extended Kalman filtering algorithm, movement conditions of vehicles and pedestrians on a road are monitored in real time, and positions and movement information of the vehicles and the pedestrians around a region where a driver and an automatic driving system are located can be provided for the driver and the automatic driving system, so that blind areas existing in observation are reduced, the timeliness of information transmission in a high-speed driving scene is guaranteed, safe driving is facilitated, and therefore traffic travel is more efficient, convenient and safe.

The invention provides a real-time simulation system based on 5G. The real-time simulation system based on 5G comprises a main system, at least one subsystem and a plurality of communication units, wherein the plurality of communication units comprise a first communication unit connected with the main system and a second communication unit connected with the subsystem. And each subsystem is connected with one second communication unit. Signal transmission is carried out between the main system and the subsystems through the first communication unit and the second communication unit; the peak transmission rate of signal transmission is greater than or equal to 10Gbit / s. Through the first communication unit and the second communication units, high-speed signal transmission between the main system and the subsystems can be realized, so that the signal time delay is low, the requirement of real-time signal transmission between the main system and the subsystems is met, and the working efficiency and the performance of the real-time simulation system are further improved.

The invention discloses a method for machining through holes and blind holes of multi-layer flexible board. The machining method comprises the steps that: the multilayer flexible board is baked for 40 min-60 min at the temperature of 120 DEG C-140 DEG C; a phenolic aldehyde base plate, the multi-layer flexible board and a cold punching cover plate are stacked from bottom to top to form a fixed package, and the fixed package is fixed at a preset positioning point; and a drill pin is used for drilling from the cold punching cover plate to the multi-layer flexible plate according to standard drilling parameters at the preset position of the fixed package, wherein the standard drilling parameters include the tool speed of the drill pin entering the multi-layer flexible board,the rotating speed of the drill pin in the multi-layer flexible board and the tool speed of the drill pin retreating from the multi-layer flexible board, wherein the tool speed of the drill pin entering the multi-layer flexible board is 0.7 m / min-0. 8 m / min, the rotating speed of the drill pin in the multi-layer flexible board is 60 Kr / min-70 Kr / min, and the tool speed of the drill pin retreating from the multi-layer flexible board is 5m / min-8m / min. The machining method for the blind holes of the multi-layer flexible board comprises the steps that: a copper window is formed in a copper layer of the multi-layer flexible board through a UV laser machine; and a base material layer is heated to a molten state by using a CO2 laser machine, and is gasified, so that blind holes can be formed. The flexible printed circuit board has high high-frequency signal transmission performance and high temperature resistance, so that the performance of a product formed by the matching methods of the invention is more stable and reliable.

A multilayer wiring board having a first layer and a second layer laminated with a ground conductor, respectively, and having a differential wire line configured with a first wire line and a second wire line, includes a pair of through-holes and which is formed in the first layer and the second layer and electrically connects the first wire line and the second wire line arranged on one surface of the multilayer wiring board and the first wire line and the second wire line arranged on the other surface of the multilayer wiring board, respectively; and clearances and which insulate the ground conductor and the through-holes and, in which the pair of through-holes formed in the second layer is arranged so that a virtual line connecting centers of the pair of through-holes is inclined with respect to a line perpendicular to a signal propagation direction of the differential wire line.

The embodiment of the invention relates to the technical field of connectors, and particularly discloses a connector and electronic equipment, the connector comprises an insulating body, a first terminal strip, a metal connecting sheet and a second terminal strip, one end of the insulating body is provided with a first accommodating cavity, and the first terminal strip is arranged on the insulating body; the first terminal row at least comprises a plurality of grounding terminals and a plurality of pairs of differential signal terminals, one ends of the grounding terminals and one ends of the differential signal terminals extend into the first accommodating cavity, the grounding terminals are arranged between one pair of differential signal terminals and the other pair of differential signal terminals, and the grounding terminals extend to form abutting parts; the metal connecting piece is arranged on the insulating body and is in surface contact with the abutting part, the second terminal row comprises conductive terminals, one end of each conductive terminal extends to the first containing cavity, and one end of each conductive terminal is arranged opposite to one end of the corresponding grounding terminal and one end of the corresponding differential signal terminal. By means of the mode, high-frequency resonance of the connector is reduced, and high-speed signal transmission is facilitated.

The invention discloses a connector and a signal transmission assembly, and the connector comprises a shell, insulating bases, and signal terminals. The number of the insulating bases is multiple, andthe multiple insulating bases are arranged in the shell side by side. Each insulating base is provided with a signal terminal. A shielding piece is clamped between two adjacent insulating bases so asto separate the two adjacent insulating bases. The structure of the connector is improved, the multi-channel and full-shielding high-speed signal transmission is achieved, the signal shielding capacity is improved, meanwhile, the connector is small in size, high in density and convenient to produce and assemble, and the production and manufacturing cost is reduced.

The invention provides a high-speed signal link design adopting parallel capacitors. The link design comprises a parallel capacitor, a parallel capacitor transmission line and a signal backflow layer.The parallel capacitor transmission line is arranged below the parallel capacitor, the parallel capacitor is welded to the parallel capacitor transmission line through a capacitor bonding pad, the backflow layer is arranged below the parallel capacitor transmission line, and the parallel capacitor transmission line comprises a width gradual change part, the width of the transmission line of the part is linearly narrowed from a position which is a certain distance away from the parallel capacitor bonding pad, in addition, the signal backflow layer right below the parallel capacitor is integrally dug out. According to the high-speed signal link design adopting the parallel capacitors, impedance mismatch and signal loss on a transmission line can be avoided.

The invention discloses an optical module, which includes a first photodetector, a delay circuit, a second photodetector, and a logic gate circuit, wherein: the first photodetector converts the received optical signal of the first wavelength into a first The electrical signal is used to transmit the first electrical signal to the delay circuit; the delay circuit is used to delay the first electrical signal and input it to the logic gate circuit; the second photodetector is used to convert the received optical signal of the second wavelength into a second electrical signal, The second electrical signal is input into the logic gate circuit; the logic gate circuit combines the second electrical signal with the delayed first electrical signal and outputs it. The invention can reduce the requirement on the receiver, realize the doubling of the rate, and solve the problem of the receiving rate of the access network.