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3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7983146 | Method for communications using a communication protocol A method, system and type of database for transmitting data is disclosed in which the data is organized into a structured linear database. The structured linear database includes a routing header portion, a file allocation table, a data portion and a tailbit portion... | 07/19/2011 |
| 7408872 | Modulation of signals for transmission in packets via an air interface The invention relates to a method and to a modulator for modulating signals. The signals are to be transmitted by a device in packets via an air interface. Each packet is supposed to comprise at least one entity of at least two different entities, which different en... | 08/05/2008 |
| 7366235 | UWB demodulating apparatus A demodulated signal is to be generated by use of a first detection signal detected a presence/absence of a signal according to a correlation between a reception signal PPM-modulated at a pulse interval of T and a pulse variation width of τ and the reception signal... | 04/29/2008 |
| 7340515 | Optimisation of network configuration A method and program for checking for misconfigurations and inefficiencies in the configuration of devices and links on a network. Information relating to the configuration of components on the network is stored in a database. The configuration information is access... | 03/04/2008 |
| 7330662 | System and method for remote optical digital networking of computing devices The extended range of optical data communication is enabled through the use of intermediary relay stations spaced fairly far apart. IRDA communicatiOn, as is well known, uses very short duration optical pulses to send data up to 1 Mbit/sec; this has the concomitant ... | 02/12/2008 |
| 7315898 | Data communication system, data transmission apparatus, data reception apparatus, data communication method, and computer program In a data communication system, the function of automatic repeat request is provided for transmission of packets based on a data communication protocol such as the Real-Time Transport Protocol or the User Datagram Protocol. Lost packets are detected at various timin... | 01/01/2008 |
| 7295509 | Signaling method in an OFDM multiple access system A method for reducing the peak-to-average ratio in an OFDM communication signal is provided. The method includes defining a constellation having a plurality of symbols, defining a symbol duration for the OFDM communication signal, and defining a plurality of time in... | 11/13/2007 |
| 7289774 | Communications method, apparatus and signal In a system (e.g. a IR or RF based wireless remote control system) comprising a number (N) of non-synchronized transmitters that transmit respective signals, a method of transmitting data in packets to a receiver, comprising the steps of: transmitting the respective... | 10/30/2007 |
| 7209974 | System and method for maintaining message synchronism during transmission of internal messages The present invention concerns a system for transmitting internal messages in a synchronizing local network. The system comprises multiple computer units for running application processes. The system further comprises multiple interface units, each for transmitting ... | 04/24/2007 |
| 7164684 | Ethernet node having hub, switch and/or repeater characteristics A method for forming a network is disclosed with the network including a plurality of communication devices, a wire network for allowing a plurality of communication transmissions between the communications devices, and at least one connectivity device connected to ... | 01/16/2007 |
| 7072707 | Method and apparatus for collecting and processing physical space data for use while performing image-guided surgery A method and apparatus for collecting and processing physical space data used while performing image-guided surgery is disclosed. Physical space data is collected by probing physical surface points of surgically exposed tissue. The physical space data provides three... | 07/04/2006 |
| 7023833 | Baseband wireless network for isochronous communication A wireless communication network system apparatus which provides for isochronous data transfer between node devices of the network, which provides at least one master node device which manages the data transmission between the other node devices of the network, whic... | 04/04/2006 |
| 7024469 | Medium access control (MAC) protocol with seamless polling/contention modes A high speed wireless network for the access market where a polling mode, a contention mode, a seamless transition between the two modes and an efficient contention resolution algorithm are utilized to coordinate user transmission while utilizing a splitting tree al... | 04/04/2006 |
| 6993667 | Apparatus for automatic energy savings mode for ethernet transceivers and method thereof An energy saving circuit is connected to a receiver of a first physical layer of a first network device. The energy saving device has first and second energy saving modes. In the first energy saving mode, a sense circuit generates a receive signal when connection ac... | 01/31/2006 |
| 6944587 | Ethernet adapting apparatus An Ethernet adapting apparatus for data transfer between a standard Ethernet data pump and an Ethernet medium access controller via telecommunication medium (4), comprising: (a) a dual mode media independent interface (9) which emulates in... | 09/13/2005 |
| 6937646 | Leakage nulling receiver correlator structure and method for ultra wide bandwidth communication system A receiver correlator structure for an ultra wide bandwidth communication system includes an antenna, a mixer, a bandpass filter, and a convertor. The receiver receives, via the antenna, an ultra wide bandwidth signal comprising a sequence of wavelets of particular ... | 08/30/2005 |
| 6938086 | Auto-detection of duplex mismatch on an ethernet A method and system for auto-detection of communication mismatch, such as in a networking environment. A device using a communication protocol uses a technique for protocol augmentation to determine sufficient information about whether there is a protocol parameter ... | 08/30/2005 |
| 6931078 | Ultra wide bandwidth spread-spectrum communications systems An ultra wide bandwidth, high speed, spread spectrum communications system uses short wavelets of electromagnetic energy to transmit information through objects such as walls or earth. The communication system uses baseband codes formed from time shifted and inverte... | 08/16/2005 |
| 6920289 | System and method for remote optical digital networking of computing devices This invention extends the range of optical data of mobile device by trading speed for distance as well as integrating a plurality of pulses over time to define a single bit of information. The present invention uses a number of integrated pulses to represent a sing... | 07/19/2005 |
| 6901112 | Ultra wide bandwidth spread-spectrum communications system An ultra wide bandwidth, high speed, spread spectrum communications system uses short wavelets of electromagnetic energy to transmit information through objects such as walls or earth. The communication system uses baseband codes formed from time shifted and inverte... | 05/31/2005 |
| 6738173 | Limiting amplifier modulator driver Apparatus for driving an optical system modulator to modulate data signals onto a light wave of the optical system. The modulator driver apparatus has a limited amplifier for receiving multiplexed low speed binary data signals and for generating amplified and limite... | 05/18/2004 |
| 6434716 | Network link tester device configured to selectively and automatically couple to a network transmit pair line or a node transmit pair line of a LAN port and determine available operational modes A network link tester couples to a LAN port with the LAN port having both a network transmit pair and a node transmit pair line. The link detector scans the network transmit pair and node transmit pair lines for the presence of link signals. Upon finding ... | 08/13/2002 |
| 6381213 | Method and apparatus for detecting collisions on a network A method to detect a collision on a carrier medium, such as UTP or POTS wiring, commences with a transmission of a first identifier for a network device over the carrier medium. The first identifier comprises a first series of pulses transmitted over a fi... | 04/30/2002 |
| 6359525 | Modulation technique for transmitting multiple high data rate signals through a band limited channel A digital data modulator includes a source of a plurality of digital data signals having a common data bit period. A plurality of encoders each encode a corresponding one of the plurality of digital data signals using a variable pulse width code having ed... | 03/19/2002 |
| 6295318 | Method and system for increasing the data rate over twisted copper pairs and other bandwidth-limited dedicated communications facilities A system and associated methods that use separate paths to send amplified data. The method expands, or amplifies, the amount of data that can be transmitted over a dedicated bandwidth-limited communications medium by using a first channel for transmitting... | 09/25/2001 |
| 6205169 | Spread spectrum pulse position modulation communication system A first spread spectrum pulse position modulated signal with a pseudonoise code is generated. A second spread spectrum pulse position modulated signal with an inverted pseudonoise code is generated. A third spread spectrum pulse position modulated signal ... | 03/20/2001 |
| 6169765 | Apparatus and method for output signal pulse width error correction in a communications receiver An output signal pulse width error correction circuit and method wherein errors in a data signal conforming to a communications protocol having a prescribed duty cycle are corrected by monitoring a duty cycle of the data signal, comparing the duty cycle t... | 01/02/2001 |
| 6160792 | Pulse amplitude modulated tone generator A tone generating circuit comprises a counter circuit having a clock input for receiving a clock signal and a plurality of outputs which generate sequential binary values in response to transitioning of the clock signal; a multiplexer having several input... | 12/12/2000 |
| 6151149 | Method and apparatus for pulse pattern modulation A method and apparatus for encoding data into a pulse pattern begins by encoding header data based on a first pulse encoding convention to produce a header pulse pattern. The resulting header pulse pattern occupies multiple time chips and indicates that s... | 11/21/2000 |
| 6115411 | System and method for spread spectrum code position modulation and wireless local area network employing the same A system for, and method of, generating a spread spectrum code position modulated waveform and a wireless local area network (LAN) containing the system or the method. The system includes: (1) a spread-spectrum encoder that receives and encodes portions o... | 09/05/2000 |
| 6108376 | Reception and demodulation of widely spaced pulse position modulated signals A system for receiving information encoded in a train of pulse position modulated signals and then decoding the pulse train to produce amplitude modulated signals representing the original information includes a circuit for detecting the beginnings of suc... | 08/22/2000 |
| 6055266 | Spread spectrum pulse position modulation communication system A first spread spectrum pulse position modulated signal with a pseudonoise code is generated. A second spread spectrum pulse position modulated signal with an inverted pseudonoise code is generated. A third spread spectrum pulse position modulated signal ... | 04/25/2000 |
| 6041074 | Spread spectrum pulse position modulation system A spread spectrum pulse position modulation/demodulation system which receives an input signal including frames and which includes first and second pulse position modulators. The first pulse position modulator modulates each frame by inserting a first pse... | 03/21/2000 |
| 6031862 | Ultrawide-band communication system and method An impulse radio communications system using one or more subcarriers to communicate information from an impulse radio transmitter to an impulse radio receiver. The impulse radio communication system is an ultrawide-band time domain system. The use of subc... | 02/29/2000 |
| 5982742 | Multiple access simplex mode communication systems and methods therefor An asynchronous time-hopping multiple access "(ATHMA") protocol and a simplex mode communication system utilizing the same requires no synchronization between transmitting stations, no handshaking between transmitters and receivers and no system manager t... | 11/09/1999 |
| 5963539 | Method and apparatus for detecting collisions on a network A method and apparatus for detecting a collision between signal transmissions on a carrier medium, such as UTP wiring, are described. The method commences with the transmission of an access identifier from a transmitter of a network device. The transmitte... | 10/05/1999 |
| 5952936 | Bidirectional remote control system using interrupt arbitration A data format is formed by a start code, an identification code and its inverted code, a first data code and a second data code, each of these codes being a single byte code, which is then followed by an interrupt arbitration period. Thus, when compared w... | 09/14/1999 |
| 5923701 | Spread spectrum pulse position modulation system A spread spectrum pulse position modulation/demodulation system which receives an input signal including frames and which includes first and second pulse position modulators. The first pulse position modulator modulates each frame by inserting a first pse... | 07/13/1999 |
| 5870381 | Method for transmitting signals from a plurality of transmitting units and receiving the signals N signals are transmitted from each of N transmitting units to a receiving unit every signal transmission cycle (Nࣙ2). In this case, N signal transmitting periods of N I-th signals and (N-1) I-th transmission short pausing periods for each of the I-th t... | 02/09/1999 |
| 5870380 | Method and apparatus for reception of signals from several transmitters wherein each transmitter is characterized by their output pulse train The disclosure relates to a method of reception of signals from at least two transmitters (RCi), wherein for each transmitter the data ("0", "1") are represented by the time interval (T0i, T1i) between two consecutive pulses transmitted by this transmitte... | 02/09/1999 |
