1029 results about "Cable transmission" patented technology

A system for powering a network element of a fiber optic wide area network is disclosed. When communication data is transferred between a central office (CO) and a subscriber terminal using a network element to convert optical to electrical (O-E) and electrical to optical (E-O) signals between a fiber from the central office and twisted wire pair, coaxial cable or Ethernet cable transmission lines from the subscriber terminal, techniques related to local powering of a network element or drop site by the subscriber terminal or subscriber premise remote powering device are provided. Certain advantages and/or benefits are achieved using the present invention, such as freedom from any requirement for additional meter installations or meter connection charges and does not require a separate power network.

A submergible pumping unit for raising viscous fluids from a well is driven by an electronic drive and control system, a first portion of which is located above the well, and a second portion of which is coupled to the submergible pumping unit. The drive and control system includes a power supply circuit located above the well for converting AC power from a source to DC power having current and voltage levels. The DC power is transmitted to the pumping unit via a two-conductor DC bus cable. The pumping unit includes a switching circuit which receives the DC power for driving a submergible motor, such as a permanent magnet brushless motor. The speed of the motor, and of a pump coupled thereto, is proportional to the voltage of the DC power applied to the pumping unit. The pump is preferably a progressive cavity pump, and the drive and control circuitry provides sufficient torque to start the pump from a static condition. A control circuit is provided for transmitting configuration and desired flow rate and speed data to the power supply.

Detecting a linear impairment in a cable under test by using a random signal transmitted down the cable. The impairment causes a reflected signal to be combined with the random signal. The combined signal extends over a plurality of sub-bands. A method and apparatus perform the steps of: (a) receiving the combined signal from a test point upstream from the impairment; (b) tuning to each sub-band and receiving a part of the combined signal within each sub-band; (c) determining an autocorrelation function of each part of the combined signal of each sub-band, to produce a plurality of autocorrelation functions; (d) combining the autocorrelation functions to form a combined function; (e) detecting the reflected signal from the combined function; and (f) determining, from the combined function, a time delay associated with the reflected signal and the distance from the test point to the impairment.

An apparatus is provided for communicating over a network images captured by a digital camera, such as a digital camera without an on-board network interface. The apparatus includes a housing separate from the digital camera having a processing unit with memory for storage of images, a camera interface card received in a memory card slot of the digital camera, and a cable or wireless connection coupling the camera interface card to the processing unit for data communication. The apparatus emulates a memory card to the digital camera, such that the digital camera's electronics operate with the memory of the processing unit through the camera interface card, as if such memory was on a memory card located in slot of the digital camera. Images captured by the digital camera are transferred, via the camera interface card and cable, to memory of the processing unit, and the digital camera can access images stored in memory of the processing unit. The processing unit has a wireless data network interface and Ethernet communication interface, whereby captured images stored in memory of the processing unit are queued in real-time for network transfer, and subsequently transferred via one of the network communication interfaces, to a computer system, such as an web site or file server, at a network destination address configurable in the processing unit. Data may be inputted by the user before and/or after image capture for association with images prior to their network transfer. The housing for the processing unit may be shaped like a motor drive unit and attached to the bottom of the camera, or worn by the user of the camera in the form of a belt pack or backpack.

A system and methods for connecting a graphic user interface to a powered network is disclosed. The network-powered graphic user interface system converts encoded computer user interface signals transmitted over a powered network cable to multiple signal sets, each set associated with a peripheral device interface. Methods for managing the admission of the peripheral devices are also described. Connection criteria include the power budget for the connection, device characteristics, device power requirements and the characteristics of other devices sharing the powered network connection.

An architecture for providing high-speed access over frequency-division multiplexed (FDM) channels allows transmission of ethernet frames and/or other data across a cable transmission network or other form of FDM transport. The architecture involves downstream and upstream FDM multiplexing techniques to allow contemporaneous, parallel communications across a plurality of frequency channels. Moreover, an automatic frequency control resolves some issues of a free-running clock in an upstream tuner of the central concentrator by performing adjustments based on the average frequency error of a number of active upstream tones. In the preferred embodiments of the present invention, the automatic frequency control (AFC) utilizes a feedback loop for at least each active upstream tone. Also, the average of the active upstream tones is determined and is utilized in providing feedback to adjust the automatic frequency control (AFC).

A High Definition Multimedia Interface (HDMI) cable carries high speed encoded data which are transmitted differentially over data channels, along with a clock. A Mobile High-Definition Link (MHL) cable carries high speed data which are multiplexed to achieve smaller connectors with fewer pins. A MHL-to-HDMI cable is proposed which includes an embedded MHL to HDMI format conversion device for demultiplexing the received MHL-formatted signal and outputting an HDMI-formatted signal. The embedded device is powered by a combination of power sources, the power being harvested from the high-speed HDMI signals themselves.

The invention discloses a robot-assisted surgery surgical drill instrument with a force sensing function. The surgical drill instrument comprises a tail end executer part, a deflection-pitching part and an autoroatation part, wherein the tail end executer consists of a six-dimensional force sensor, a drill connecting element, a pitching connecting element, a surgery drill and a middle connecting shaft, and is used for realizing hole drilling and force sensing functions; the deflection-pitching part consists of a pitching shaft, a middle support body, a deflection driving wheel, a deflection shaft and a transmission wheel, and is used for completing the pitching and deflection freedom; and the autoroatation part consists of an autoroatation shaft and a carbon fiber pipe, and is used for realizing the autoroatation freedom. The surgical drill instrument provided by the invention has the advantages that cable transmission is used, so that the long-distance transmission can be realized; the return difference is eliminated through proper pre-tightening; the operation space is large; the transmission precision is high; the moving stability is high; and the drill tail end force and moment can be sensed.

A compact and wearable metabolic analyzer transducer comprising a housing containing a plurality of analog sensors, an A/D converter, a microcontroller, and a power source operatively coupled thereto where the microcontroller is programmed to compute minute ventilation, O₂ uptake, and CO₂ production of a subject. The transducer and its contents are of a size and weight that can either be easily supported from a facemask worn by a subject or incorporated in a respiratory circuit. The measured values can be wirelessly transmitted or transmitted, via a cable, to a remote personal computer, a personal digital assistant (PDA), or other display devices such as digital watches or image projectors.

A system and method for operating a display device and one or more USB peripherals remotely from a host computer. The system may include a host computer, a display device, one or more USB compliant peripherals, a local extender operable to couple to the host computer system and a remote extender coupled to the local extender and to the display device and one or more USB peripherals. The local extender may be coupled to the remote extender through four twisted wire pairs which in one embodiment comprises a category 5 cable. The cable may be longer than the maximum length allowed by the USB specification. The host computer system may generate a video signal intended for the display device, as well as one or more peripheral signals intended for the one or more USB peripherals. The video signals may be received by the local extender from the host computer, converted to a form which is suitable for transmission over the cable, and transmitted to the second video converter which may then send the video signals to the display device. The local extender may receive the one or more peripheral signals from the host computer system over an internal computer bus, such as a PCI bus, convert the signals to a non-USB compliant protocol, such as Universal Serial Bus Extension (USBX) packets, and transmit the USBX packets to the remote extender over the cable. The video data may include RGB signals as well as HSync and VSync video synchronization signals.

A High Definition Multimedia Interface (HDMI) cable carries high speed encoded data, which are transmitted differentially over data channels, along with a clock. A Mobile High-Definition Link (MHL) cable carries high speed data which are multiplexed to achieve smaller connectors with fewer pins. A MHL-to-HDMI cable is proposed, which includes an embedded MHL to HDMI adapter device for demultiplexing the received MHL-formatted signal and outputting an HDMI-formatted signal. The embedded circuit is powered by a combination of power sources, the power being harvested from the high-speed HDMI signals themselves, including a startup circuit harvesting power from a low speed HDMI signal when power from the high-speed HDMI signals is not available.

For collecting data from a water well, down-hole sensors are housed in modules. The modules are arranged to be screwed together in-line to form a vertical string. Mechanically, the modules are secured to each other only by the screw connection. Data is transmitted to the surface on a 2-wire cable, there being no other electrical connection between the modules and the surface. The modules are connected in multi-drop configuration to the 2-wire cable. Data is transmitted using time-division multiplexing.

A system, method and program product uses tags as markers for incorporating local content in a communications stream, e.g., TV broadcast, cable transmission. A transmitter generates a communication stream including program content for transmission to a receiver. The transmitter includes an authoring tool for generating two types of tags for incorporation into the program content. The receiver captures the program content and stores the tags in tables. One type of tag initiates local action in the program content in the communication stream. A second type of tag is capable of modifying the first type of tag in the tables. When the time for a local action according to a first type of tag is detected, the program content is interrupted by splicing or inserting the local content.

A method for manufacturing a spark plug which reduces the generation of spatters and the possibility of insufficient weld strength resulting from penetration depth insufficiency of a weld metal portion is disclosed. In accordance with the method, a chip joint face formation portion of a center electrode is formed from a heat-resistant alloy predominantly containing Fe or Ni. A noble metal chip is attached to a chip joint face of the chip joint face formation portion to thereby form a chip-attached assembly. A full-circled laser-beam weld metal portion is formed on the chip-attached assembly in such a manner as to intrude into the noble metal chip and into the chip joint face formation portion. A graded-index-type fiber optic cable is used as an optical transmission path extending between a laser beam generator and an optical emission section. A laser beam which is transmitted from the laser beam generator through the cable irradiates the chip-attached assembly while being condensed.

The invention relates to an intelligent carrier for a mechanical parking system, comprising two vehicle bodies connected through a set of connecting rods, wherein, at least one vehicle body is provided with a traveling mechanism and a positioning device; the two vehicle bodies respectively comprise two rushing board mechanisms; each rushing board mechanism comprises a rushing board body, clamping bars on two ends of the rushing board body, a combined guide rail which is arranged on the two ends of the rushing board body and fixed on the vehicle body, and a power unit which controls the movement of the rushing board body; the combined guide rail comprises a first guide unit and a second guide unit; the rushing board body is moved under the action of the power unit and further drives the clamping bars to make linear motion along the first guide unit or rotary motion along the second guide unit. All motions are completed through the driving of a motor, which solves the problem of structural reliability of the prior carrier; the rushing board mechanisms for clamping tyres are driven by the motor, adopt a leadscrew-nut transmission mechanism, a synchronous belt driving mechanism, a chain transmission mechanism or a wire cable transmission mechanism for transmission, and are guided by the guide rail, thereby having high reliability.

An architecture for providing high-speed access over frequency-division multiplexed (FDM) channels allows transmission of ethernet frames and/or other data across a cable transmission network or other form of FDM transport. The architecture involves downstream and upstream FDM multiplexing techniques to allow contemporaneous, parallel communications across a plurality of frequency channels. Furthermore, the architecture allows a central concentrator to support a plurality of remote devices that each have guaranteed bandwidth through connection-oriented allocations of bi-directional data flows. The upstream and downstream bandwidth allocation can support symmetrical bandwidth as well as asymmetrical bandwidth in either direction. The architecture generally can be used to support connection-oriented physical layer connectivity between a remote device and the central concentrator. Furthermore, the architecture may be integrated into other higher level devices such as, but not limited to, bridges, switches, routers, and/or gateways. The architecture generally may peacefully coexist with other services commonly-found in cable distribution networks.

A vehicle computer interface and software upgrade tool is in the form of a module. A base module contains basic vehicle interface, information and software. Additional modules can be connected to the base module or similar modules to provide a user or technician with the latest interface and software upgrades for vehicles, new vehicle data and new reprogramming features for existing vehicles. This is an expandable system which enables a user of technician to only purchase a relatively small module or component that contains the new interface or information rather than having to repurchase an entire new scan tool or vehicle analyzer. The modules are readily connectable to a vehicle's data port, commonly known as an OBD II connector or port. The modules also include additional connection ports for power in, power out, USB and/or pin connectors which provide for the export of data and other connectors. These modules can also be used in conjunction with an intelligent cable. The intelligent cable has a small computer embedded within the cable to enable sensitive electronic components to be used without cable transmission losses or electrical disturbances.

A system and method providing a wireless broadband connection between base stations and customer sites. The system includes indoor units, within the base stations and customer sites, that communicate across cables to outdoor units. The indoor units link to routers, switches and other devices and services. The outdoor units transmit and receive wireless data and send it to the indoor units. The indoor units control the functioning of the outdoor units by transmitting digital messages along the interface cables. The outdoor units report various detector values to the indoor units, which allows the indoor units to tune and adjust several functions within the outdoor units. Several embodiments for automatically calibrating the receive path gain in the base stations to compensate for the base station cable between the indoor unit and outdoor unit are described. In addition, anAn improved transmit power control technique which is not affected by modulation type, is also described.

An interconnect system includes a first circuit board, first and second connectors connected to the first circuit board, and a transceiver including an optical engine and arranged to receive and transmit electrical and optical signals through a cable, to convert optical signals received from the cable into electrical signals, and to convert electrical signals received from the first connector into optical signals to be transmitted through the cable. The transceiver is arranged to mate with the first and second connectors so that at least some converted electrical signals are transmitted to the first connector and so that at least some electrical signals received from the cable are transmitted to the second connector.

A cable bus system for the mounting and positioning of high amperature, from low to high voltage electrical power cables transmitting polyphase electrical current. The cable bus system included a ventilated enclosure used to protect electrical cables mounted therein. The enclosure is provided with multiple modular cable trays which are bolted together in a stacked arrangement to form a single multi-level cable raceway. The enclosure is further provide with ventilated top and bottom covers which are secured respectively to the top and bottom of the uppermost and bottommost calve trays to define the enclosed metal circuit. The cable bus system is capable of transmitting the same highest allowable “free air” cable amperature in both above and underground installations, effectively improving the transmission of electrical power from one end to the other end in installations where a transition of electrical power from on the ground is either necessary or economically preferable. For the underground portion, the cable bus is installed in the encasement that is uniquely offset vented or power cooled to meet the cable high amperage requirements. This cable bus system is also suitable for high vertical rise installations when utilizing anti cable slip mechanism or technique.

The invention discloses an extensible-connection six-freedom-degree force feedback mechanical arm. The extensible-connection six-freedom-degree force feedback mechanical arm comprises a base mechanism, a parallel four-bar mechanism arranged on the base mechanism and an end executor mechanism connected to the tail end of the parallel four-bar mechanism. The extensible-connection six-freedom-degree force feedback mechanical arm can be used for capturing the movement of a wrist and can be connected with tools such as a force feedback data glove and a wrench in an extended mode. According to the extensible-connection six-freedom-degree force feedback mechanical arm, three freedom degrees used for determining the spatial positions of extension connecting positions have force sense feedback, force feedback is achieved in the mode that a direct-current servo motor is matched with a cable transmission speed reduction mechanism, and three freedom degrees used for determining the spatial postures of the extension connecting positions are detected through three high-accuracy photoelectric encoders; meanwhile, a good hardware platform is provided for obtaining the spatial positions and the spatial postures of extension devices and tools such as the data glove, the wrench and a screwdriver in virtual operation and obtaining the feedback force at the extension connecting positions, and the extensible-connection six-freedom-degree force feedback mechanical arm is compact in structure, large in movement space, high in rigidity, accurate in positioning and wide in application range.