"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 7346051 | Slave device, master device and stacked device A stacked device is disclosed which is easily manufactured while identifying a plurality of devices that are stacked in the stacked device. The stacked device includes a stack of a plurality of slave devices and a master device having identical terminal arrangements... | 03/18/2008 |
| 7243173 | Low protocol, high speed serial transfer for intra-board or inter-board data communication A method and a circuit for converting parallel CPU information buses within circuit boards to serial data buses, while limiting overhead data to provide a low-level protocol and high rates of data transfer over distances up to forty inches. Larger scale parallel dat... | 07/10/2007 |
| 7190694 | Communications system A communications system connected via a bus capable of transmitting multiplexed packets of control signals and AV signals while providing an environment, which is the same as an environment where connections are made using analog signal lines. A register with a fixe... | 03/13/2007 |
| 7164966 | Intelligent volumetric module for drink dispenser An intelligent volumetric module for use in metering pressurized syrup to a drink dispenser machine comprises a solenoid driven metering system for controlling liquid flows from a pressurized syrup container and a controller for controlling operation of said solenoi... | 01/16/2007 |
| 7151771 | Communications system A communications system connected via a bus capable of transmitting multiplexed packets of control signals and AV signals while providing an environment, which is the same as an environment where connections are made using analog signal lines. A register with a fixe... | 12/19/2006 |
| 7113645 | Image decompression apparatus and method In a still image decompression process, operations of respective parts of a still image decompression apparatus are controlled so as to limit the operations into those such that a decompressed image on a specific LL subband is obtained. ... | 09/26/2006 |
| 7092790 | Intelligent volumetric module for drink dispenser An intelligent volumetric module for use in metering pressurized syrup to a drink dispenser machine comprises a solenoid driven metering system for controlling liquid flows from a pressurized syrup container and a controller for controlling operation of said solenoi... | 08/15/2006 |
| 7050603 | Watermark encoded video, and related methods Watermarks in video signals or the accompanying audio track are used to associate video objects in a video sequence with object specific actions or information. A video object refers to a spatial and temporal portion of a video signal that depicts a recognizable obj... | 05/23/2006 |
| 7026949 | Method for transmitting and receiving messages in home appliance networking system A method for transmitting and receiving messages in a home appliance networking system, wherein a first home appliance connected to a network appends a unique message identification number to a header of a message and transmits the resulting message to a second home... | 04/11/2006 |
| 6906638 | Sensor unit A sensor unit (9) for measuring a process magnitude and for producing a digital signal representative of the process magnitude exhibits an interface (3) for transmitting the digital signal in a network (5) that supports communication between a p... | 06/14/2005 |
| 6744348 | Security system utilizing group supervision polling In a security system that has a large number of individually-addressable modules interconnected on a data bus to a control panel, a method of concurrently supervising the modules by first configuring each module with a unique zone number including a group number and... | 06/01/2004 |
| 6683526 | Pager-based communications system A communications system is provided for communicating information to and from recipients scattered over wide geographic areas. A computer controlled head end communications interface adds address information to a message in accordance with who the intende... | 01/27/2004 |
| 6167046 | Communication method, communication system and computer readable recording medium recording communication program In a communication network in which a plurality of equipments each having a function implementing unit having a plurality of functions and a communication control unit having communication function communicating with each other, the communication control ... | 12/26/2000 |
| 5818334 | Addressable devices with interface modules having electrically readable addresses In a communication system such as a fire detection system, individual addressable devices determine their addresses from address interface modules at the device locations. An interface module includes wire connectors for receiving system wires and a devic... | 10/06/1998 |
| 5805073 | Apparatus for connecting electric appliances The device provides a signal to an electronic appliance and is used in a system including a plurality of electronic appliances connected in series so that they can transmit and receive information and control signals amongst each other, with the transmiss... | 09/08/1998 |
| 5717385 | Field bus system and virtual field apparatus In a system for performing signal transmission, through a field bus, between field devices and higher-rank apparatuses connected on a transmission line, the field devices are of the analog signal type. A substitution device is provided between the analog ... | 02/10/1998 |
| 5486817 | Communication system for vehicle control system having presettable initial state A communication system for a vehicle conducts mutual communication between a central station and peripheral stations via a communication signal line. A communication signal from the central station is inputted via the communication signal line, which is o... | 01/23/1996 |
| 5467078 | System and method for communicating data between plural air conditioning machines for controlling the machines and displaying their status A communicating system has at least two air conditioning machines which are connected to a primary interface and a secondary interface, respectively. The primary interface is connected to a primary remote controller having a display. The secondary interfa... | 11/14/1995 |
| 5388091 | Communications system for communications between an electronic control apparatus and a test apparatus A communications system includes an electronic control apparatus having an asynchronous serial communications function and a test apparatus for checking the operation of the electronic control apparatus. The test apparatuses using different communications... | 02/07/1995 |
| 5122948 | Remote terminal industrial control communication system An industrial control system has a central processing unit and a plurality of remote terminal units coupled to a communication network. Data is exchanged among the network devices in the form of messages which contain a source address, which designates th... | 06/16/1992 |
| 5054995 | Apparatus for controlling a fluid compression system An apparatus includes a compressor for compressing fluid including a sensor capable of sensing at least one function relative to the operation of the compressor. A controller controls the compressor causing the value of said one function to be within a pr... | 10/08/1991 |
| 4939505 | Monitoring and warning system for series-fed runway visual aids A system for failure detection of series-fed lighting circuits monitors the status of series-fed lamps and provides for feedthrough shift circuit protection of the isolating transformer and for suppression of overvoltage which appears at the failed lamp t... | 07/03/1990 |
| 4903016 | Communication control unit A communication control unit controls communication between a terminal and a communication network employing a multi-conjunction architecture, and comprises a transmitter/receiver for transmitting and receiving a signal to and from the communication netwo... | 02/20/1990 |
| 4768202 | Signalling method and device for bidirectional digital transmission link A method of transmitting signalling along a bidirectional digital transmission link consists in transmitting from an intermediate equipment of the link a signalling message in two parts. One is a characterizing part the form of which depends on the signal... | 08/30/1988 |
| 4156866 | Multiple remote terminal digital control system A central processor exercises on-off power control over a number of widely spaced loads and determines the status of the loads through a system which includes a transmitter-receiver terminal at each load and a common data bus connecting the central statio... | 05/29/1979 |
| 4131882 | Digital two-wire irrigation control system with feedback A method and apparatus for the control of a number of valves in an irrigation system utilizing only two lines between a central encoder and a number of remotely located decoders. An alternating-current signal on the lines is used both to transmit power to... | 12/26/1978 |
| 4086568 | Modular I/O equipment for controlling field devices directly or as an interface Signals for controlling any of a wide variety of field devices such as circuit breakers, generators, transformer connections and the like are produced from a common function module. The particular device or devices to be operated are selected on an exclus... | 04/25/1978 |