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Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 7188275 | Method of verifying a monitoring and responsive infrastructure of a system A method of verifying a monitoring and responsive infrastructure of a system is provided and described. The method includes setting a sensor to a simulation mode. Further, a test value is provided to simulate a real value outputted by the sensor. While in the simula... | 03/06/2007 |
| 7039835 | Drop-out management system and method Drop-outs in a data read channel having one or more controllable elements are managed. A data read channel derives a signal having at least one drop-out characterising parameter from which data are to be recovered. The signal from the data read channel is tapped and... | 05/02/2006 |
| 7006932 | Technique for determining performance characteristics of electronic devices and systems A technique for determining performance characteristics of electronic devices and systems is disclosed in one embodiment, the technique is realized by measuring a first response on a first transmission line from a single pulse transmitted on the first transmission l... | 02/28/2006 |
| 6980773 | Apparatus and method for bias compensation in line circuits A transmission line circuit includes a line driver having first and second outputs coupled through a differential transmission line to first and second inputs of a line receiver. A first bias is provided between the first and second inputs of the line receiver. The ... | 12/27/2005 |
| 6978476 | Device and method of determining location of signal ingress The present invention comprises a device which may be attached to a cable ground block (62) such that the level and type for signal emitted through the upstream flow of the signal, from a residence or business (59), may be determined along with the loc... | 12/20/2005 |
| 6920402 | Technique for determining performance characteristics of electronic devices and systems A technique for determining performance characteristics of electronic devices and systems is disclosed. In one embodiment, the technique is realized by measuring a first response on a first transmission line from a single pulse transmitted on the first transmission ... | 07/19/2005 |
| 4680431 | Data network interface module with circuitry for disconnecting a module that has lost supply voltage The invention relates to an interface module for the bidirectional transmission of data streams in a data network with separate power supplies for the individual bus stations. According to the invention, means are provided for bridging the bus station, pr... | 07/14/1987 |
| 4642426 | Apparatus for locating faults in a carrier subscriber communication system Method and apparatus is disclosed for identifying faults in a subscriber carrier telephone system utilizing out-of-band pilot signals and comprising pluralities of cables and repeaters that are alternately connected in series between carrier equipment at ... | 02/10/1987 |
| 4552992 | Analog signal verification circuit The present system employs a high speed digital signal processor which is programmed to generate pairs of digitized waveforms, each pair representing a pair of different frequencies in response to coded input signals. Each pair of different digitized wave... | 11/12/1985 |
| 4456906 | Automatic testing of carrier relay equipment in electrical power transmission lines In an electrical power transmission system, transmitter-receiver pairs at stations which communicate with similar pairs at other stations to block tripping of circuit breakers or for other control functions are periodically tested. An electrical circuit p... | 06/26/1984 |
| 4434324 | Reversal of connections of telegraphic line wires upon detection of unwanted polarity of the loop current The system comprises at least one teleprinter station (1) connected to an exchange (3) by means of a transmission-reception line (2) and comprising a polarity detector (31) for the line circulating current, and a device (30) for reversing the connection o... | 02/28/1984 |
| 4408325 | Transmitting additional signals using violations of a redundant code used for transmitting digital signals At a transmitter of a digital transmission system which uses a redundant transmission code to transmit data, at least one predetermined code combination which occurs randomly in the encoded data is selectively modified, to form a predetermined code violat... | 10/04/1983 |
| 4406919 | Method and apparatus for monitoring intermediate regenerative repeaters A method and apparatus for monitoring remotely-fed intermediate regenerative repeaters, in which each intermediate regenerative repeater contains a digital signal regenerative repeater for the digital data signal transmitted and a telemetry signal regener... | 09/27/1983 |
| 4390990 | Method for multiple signal collision detection on a transmission line By coincidentally injecting a predetermined level of direct current with the transmission of data on a transmission line, multiple signal transmissions on the line can be detected by the presence of a DC level greater than a predetermined level on the lin... | 06/28/1983 |
| 4355215 | Remote control systems for telecommunications links A remote control system for a telecommunications link between two stations, one being a monitoring station and the other a monitored station, interconnected by an outward channel and a return channel, said channels having a plurality of signal regeneratin... | 10/19/1982 |
| 4284843 | Repeating station for use in digital data communications link A repeater for use in a data communications link, particularly of the type to provide the exchange of process control information with external controlled equipment, includes a detector for detecting incoming data presented on the data communications link... | 08/18/1981 |
| 4273955 | System for in-service quantitative performance analysis of data communications system A data communication system is provided comprising, at a plurality of locations, data terminal equipment. Communication equipment adapted to transmit and/or receive data from location to location is provided at each location connected to the terminal equi... | 06/16/1981 |
| 4270029 | Selection system for digital signal repeaters A digital signal repeater selecting system for a digital signal transmission system equipped with a plurality of digital signal repeaters disposed on a transmission line at desired intervals, in which there are provided in each of the repeaters a delay ci... | 05/26/1981 |
| 4233471 | Automatic telecommunication exchange system A system for centralized reporting of alarm conditions in a multinode data handling system includes an alarm concentration unit at each node of the system for collecting alarm conditions. Each alarm concentration unit is coupled to a signal transmission u... | 11/11/1980 |
| 4225962 | Mosaic printer A mosaic printer is made secure from unauthorized interception of data by falsifying the needle drive pulse current magnitude and sequence so that electromagnetic leakage radiation cannot be used to determine the alphanumeric data being printed. This fals... | 09/30/1980 |
| 4224466 | Combined data input and test circuit Input channels are provided for receiving data pulses from sensors or other parts of an electronic data system. Filters, for examle r-f decoupling filters, are provided for each channel prior to passing the pulses to a utilization device, such as a counte... | 09/23/1980 |
| 4208544 | Checker and automatic synchronizer for coding equipment 1. A one way communication system comprising means for transmitting coded pulse data and synchronizing pulses from a transmitter to a receiver having a source of clock pulses, monitoring means connected to the receiver and responsive continuously to recei... | 06/17/1980 |
| 4163210 | Arrangement for checking a contact inserted between a transmitter circuit and a receiver circuit to allow electrical signals to be transmitted An arrangement for checking contact betweena transmitter circuit situated upstream and a receiver circuit situated downstream, the contact being made to enable electrical signals corresponding to 1 and 0 logic states produced by the transmitter circuit to... | 07/31/1979 |
| 4160874 | Process for signaling an interruption in the state of readiness for the reception in data terminal devices in which data are exchanged In a process for signaling an interruption in the state of readiness of a data terminal device in a called station, the data being transmitted over a data selector network, and in particular for teleprinters, following the establishment of a connection, t... | 07/10/1979 |
| 4122301 | Selection of branch lines of multipoint junction circuits A multipoint junction unit at a hub office interconnects a main line and a plurality of branch lines, the main line extending to a control station and the branch lines extending to data station line loops, to downstream local offices and to a main line of... | 10/24/1978 |
| 4084070 | Overcurrent protection circuit A circuit for protecting a TELEX line driver from damage due to overcurrent caused by a short circuit on the communications line. Two transistors are connected to form a monostable circuit having an input coupled across a resistor in the current path of t... | 04/11/1978 |
| 4069396 | Power saving circuit for use with a converter circuit in a telephone switching installation Power saving means is shown for use with a converter circuit in a telephone switching installation. The converter circuit comprises an analog-to-digital converter and a digital-to-analog converter. The voltage supply for the converter circuit is switched ... | 01/17/1978 |
| 4055808 | Data communications network testing system A testing facility for a data communications network including modulators and demodulators, or modems, at central sites, at intermediate, or hubbing, sites, and at remote sites. Hubbing site testing units connect to respective host modems at the intermedi... | 10/25/1977 |
| 4048441 | Error control for digital multipoint circuits A multipoint synchronous data network is formed by junction units which provide signal paths that interconnect incoming branch lines to a common outgoing branch. The junction units arranged to combine the branches so that data words on one branch are prop... | 09/13/1977 |
| 4037050 | Fault isolation in communications circuits In a multipoint data communications system in which a central processing unit communicates with a plurality of remote terminals over a shared two-way communications facility, an automatic fault isolation circuit is provided to monitor energy levels origin... | 07/19/1977 |
| 4009356 | Data modems having data drop-out and data echo protection Disclosed is an automatic data communication system having communicating modems equipped with automatic equalizers. The equalizers respond to a first long equalization sequence automatically transmitted from another modem. In response to that long equaliz... | 02/22/1977 |
| 3982242 | McCulloh receiver A receiver is disclosed connected to a McCulloh loop, having an N or line side and a G or ground side, for receiving coded alarm signals from a plurality of McCulloh transmitters. The receiver is especially adapted for supplying the alarm signals to a com... | 09/21/1976 |
| 3978449 | Method and apparatus for in-band signalling in data transmission An in-band signalling system for the transmission of both data and control signals through a common communications channel is disclosed. Unique means of distinguishing data bits from control bits is employed without the use of additional bandwidth over th... | 08/31/1976 |
| 3978282 | Apparatus and method for measuring the transmission characteristics of a network A substantially non-interfering, low-intensity sweeping test signal is transmitted along a network to be tested. Means are provided for receiving and tracking the test signal at the opposite end of the network. A reference signal is transmitted along with... | 08/31/1976 |
| 3973254 | Arrangement for a dynamic display system A digital display system of the dynamic pulse-lighting type for electronic desk-top calculators and the like, characterized in that a blanking signal having a pulse width large enough to cover each border time between adjacent display timing signals is us... | 08/03/1976 |
| 3963867 | Method for indicating a free-line state in a binary data communication system A method for indicating the free-line state of a subscriber's line connected to a terminal exchange in a binary data communication system comprising generating and transmitting to the exchange a special code word or byte of a plurality of a fixed number o... | 06/15/1976 |
| 3944741 | Print rate control system Maximizing the printing rate of an electronic printer by causing it to print data characters at a relatively constant rate despite variations in the pattern of the incoming data. The number of characters in an incoming data pattern to be printed substanti... | 03/16/1976 |
