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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 |
| 7342482 | Communication controller for an active transponder A method for processing of encoded information by a battery-powered active transponder is disclosed for the application within a transponder system for the wireless payment of road toll having the steps of receiving modulated microwave radiation of preset frequency ... | 03/11/2008 |
| 7332973 | Circuit and method for digital phase-frequency error detection A time-to-digital converter comprises a ring oscillator, a counter, an encoder, and a multi-bit latch. The ring oscillator comprises a first input and a clock input, as well as, a first output responsive to a single cycle of the ring oscillator and a second output r... | 02/19/2008 |
| 7321735 | Optical down-converter using universal frequency translation technology A method and system for converting an optical signal to electrical information signals, including demodulated baseband information signals and modulated baseband signals at multiple harmonics. In an embodiment, the optical information signal is amplitude modulated w... | 01/22/2008 |
| 7295826 | Integrated frequency translation and selectivity with gain control functionality, and applications thereof Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering... | 11/13/2007 |
| 7292835 | Wireless and wired cable modem applications of universal frequency translation technology Frequency translation and applications of same are described herein, including cable modem applications. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and fil... | 11/06/2007 |
| 7286158 | Method and system for providing integrated remote monitoring services A method and system for providing integrated remote monitoring services includes receiving and storing radio frequency identification (RFID) data from an RFID system at a remote facility of a subscriber. Video data is received from a video system at the facility and... | 10/23/2007 |
| 7271727 | Dual frequency radio tag for a radio frequency identification system A dual frequency radio tag for a radio frequency identification system is provided that includes an antenna system and a first receiver coupled to the antenna system. The first receiver receives and processes request signals from a first unit type at a first frequen... | 09/18/2007 |
| 7245673 | Windowed multiuser detection Windowed multiuser detection techniques are disclosed. A window of data is established, and certain central bits within the window are selected as reliable, while other side bits are ignored. The selected bits are demodulated. The windowed multiuser detector moves a... | 07/17/2007 |
| 7236901 | Digital broadband frequency measurement The present invention relates to a device and method that digitally replicates the analog processing that is normally associated with an instantaneous frequency measurement device. Specifically, the present relates to a digital frequency measurement device comprisin... | 06/26/2007 |
| 7225229 | Automated pushing of computer user's context data to clients Techniques are described for providing information about a current state that is modeled with multiple state attributes. In some situations the providing includes receiving from a first client an indication of an interest in receiving values for an indicated one of ... | 05/29/2007 |
| 7203906 | Supplying notifications related to supply and consumption of user context data Techniques are described for providing information about a current state that is modeled with multiple state attributes. In some situations, the providing includes receiving from a module a request related to the modeling of the current state with the multiple state... | 04/10/2007 |
| 7198227 | Aircraft cargo locating system An aircraft cargo locating system determines the location and weight of aircraft cargo placed in unit loading devices. A wireless tag, such as an Radio Frequency Identification (RFID) tag is affixed to each of the loading devices. The system receives information fro... | 04/03/2007 |
| 7184951 | Methods and systems for generating phase-derivative sound Methods and systems for digitally generating sound from phase and amplitude information of a narrow bandwidth signal, such as a narrow bandwidth locator signal. Phase-derivative information is determined from the phase information. The bandwidth of the phase-derivat... | 02/27/2007 |
| 7167090 | Far-field RF power extraction circuits and systems A method and apparatus for performing far-field power extraction are presented. The method includes receiving an electromagnetic radiation signal, rectifying the signal to produce a direct current (D.C.) voltage and providing the D.C. voltage to a circuit. A far-fie... | 01/23/2007 |
| 7167215 | Gain control for a high definition television demodulator A demodulator for a high definition television receiver includes a first circuit element which receives a signal, and is operative in a first arrangement to produce an output signal having a first dynamic range, and operative in a second arrangement to produce an ou... | 01/23/2007 |
| 7155456 | Storing and recalling information to augment human memories A system for computer-based storing of information about a current state so that later recall of the information can augment human memories In particular, when information about a current event of interest is to be stored, a variety of current state information of d... | 12/26/2006 |
| 7110444 | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal gen... | 09/19/2006 |
| 7110435 | Spread spectrum applications of universal frequency translation Frequency translation and spread spectrum applications of same are described herein. Such applications include, but are not limited to, unified down-conversion and de-spreading, unified up-conversion and spreading, RAKE receivers utilizing unified down-conversion an... | 09/19/2006 |
| 7109475 | Leading edge/trailing edge TOF detection Disclosed are a time-of-flight mass spectrometer and signal processing electronics. The signal processing electronics include a plurality of time-to-digital converters configured to receive signal pulses from the same detector anode within the time-of-flight mass sp... | 09/19/2006 |
| 7106199 | RF-ID system with sensor and method of sending additional signals In a radio frequency identification (RF-ID) system and method of sending additional signals, the radio frequency identification (RF-ID) system includes a tag portion including a sensor, the tag portion for outputting a composite signal including additional data from... | 09/12/2006 |
| 7089497 | Managing interactions between computer users' context models Techniques are described for providing information about a current state that is represented with multiple attributes. In some situations, the providing includes a first computer receiving indications of multiple characterization modules, each characterization modul... | 08/08/2006 |
| 7082171 | Phase shifting applications of universal frequency translation A universal frequency translation module (UFT) frequency translates an electromagnetic (EM) input signal by sampling the EM input signal according to a periodic control signal (also called an aliasing signal). By controlling the relative sampling time, the UFT modul... | 07/25/2006 |
| 7071773 | Digital phase locked loop The invention relates to a digital phase locked loop (PLL) 12 for demodulating an intermediate frequency signal. The digital phase locked loop 12 comprises two coordinate rotation digital computers 24 and 30 in its phase detector. The rob... | 07/04/2006 |
| 7072390 | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal gen... | 07/04/2006 |
| 7062715 | Supplying notifications related to supply and consumption of user context data Techniques are described for providing information about a current state that is modeled with multiple state attributes. In some situations, the providing includes receiving from a module a request related to the modeling of the current state with the multiple state... | 06/13/2006 |
| 7058893 | Managing interactions between computer users' context models Techniques are described for providing information about a current state that is represented with multiple attributes. In some situations, the providing includes a first computer receiving indications of multiple characterization modules, each characterization modul... | 06/06/2006 |
| 7058894 | Managing interactions between computer users' context models Techniques are described for providing information about a current state that is represented with multiple attributes. In some situations, the providing includes a first computer receiving indications of multiple characterization modules, each characterization modul... | 06/06/2006 |
| 7054296 | Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation Frequency translation and applications of same are described herein, including wireless local area network (WLAN) applications such as IEEE Standard 802.11 WLANs. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, ... | 05/30/2006 |
| 7046263 | Requesting computer user's context data Techniques are described for providing information about a current state that is modeled with multiple state attributes. In some situations, the providing includes receiving from first and second sources indications of an ability to supply values for, respectively, ... | 05/16/2006 |
| 7039372 | Method and system for frequency up-conversion with modulation embodiments A method and system is described wherein an information signals is gated at a frequency that is a sub-harmonic of the frequency of the desired output signal. In the modulation embodiments, the information signal is modulated as part of the up-conversion process. In ... | 05/02/2006 |
| 7026850 | Programmable self-calibrating vernier and method The present invention relates in general to the field of generation of precise electrical signals, in particular, to a technique for providing accurate delays of signals using a controllable delay line, and is applicable to the areas of high speed communication and ... | 04/11/2006 |
| 7027786 | Carrier and clock recovery using universal frequency translation Coherent detection of a received EM signal using universal frequency translation (UFT) is described herein. The received EM signal is sampled according to a sub-harmonic LO signal, where the LO signal is in frequency and phase coherence with the received EM signal. ... | 04/11/2006 |
| 7019617 | Radio frequency identification devices, backscatter communication device wake-up methods, communication device wake-up methods and a radio frequency identification device wake-up method Radio frequency identification devices, backscatter communication device wake-up methods, communication device wake-up methods and a radio frequency identification device wake-up method are described. In one aspect, a wireless communication device includes a process... | 03/28/2006 |
| 7010286 | Apparatus, system, and method for down-converting and up-converting electromagnetic signals Methods, systems, and apparatuses for down-converting and up-converting an electromagnetic signal. In embodiments, the invention operates by receiving an electromagnetic signal and recursively operating on approximate half cycles of a carrier signal. The recursive o... | 03/07/2006 |
| 7006805 | Aliasing communication system with multi-mode and multi-band functionality and embodiments thereof, such as the family radio service A receiver having multi-mode and multi-band functionality and capabilities is described herein. The receiver is capable of selectively operating over a plurality of bands and channels. The receiver operates in a plurality of modes, including but not limited to a sin... | 02/28/2006 |
| 6999526 | Method for simple signal, tone and phase change detection A method for detecting an information signal, tone and/or a phase change of a tone in one or more signals which contain inter alia this information signal or this tone, is characterised in that each signal is divided into segments (blocks), in that only a selection ... | 02/14/2006 |
| 6943847 | FM demodulator for SECAM decoder A SECAM decoder and an FM modulator therefor are disclosed, in which a demodulated color signal is provided to indicate deviations in the frequency of modulated color information from a nominal subcarrier frequency. The demodulator comprises numerator and denominato... | 09/13/2005 |
| 6940392 | Method and apparatus for varying signals transmitted by a tag An apparatus (10, 240, 300) includes a signpost (11, 241-256, 322, 612, 623, 626-628, 652, 661, 682, 686, 703) which transmits signpost signals (24) that are received by a tag (12, 271-275, 301-316, 395-397, 616-618, 641-643, 653, 656-657, 66... | 09/06/2005 |
| 6646500 | Integrated circuit having an FM demodulator and method therefor A digital FM demodulator employs a baseband phase lock loop (BBPLL), which is particularly effective for long range reception, for combining and demodulating a pair of signals represented by the mathematical expression A(t)ejθ(t) to result in ... | 11/11/2003 |
| 6639459 | Demodulator using digital circuitry A demodulator converts a voltage input to an output voltage. The demodulator has a voltage-controlled oscillator (VCO), a counter, a holding apparatus, and a digital compare apparatus. The VCO generates a signal having a frequency proportional to the anal... | 10/28/2003 |
