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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 8180308 | Apparatus and methods for detection of interface in radio-frequency devices A communication apparatus includes a radio frequency (RF) apparatus. The RF apparatus includes an amplifier, and a signal detection circuit. The amplifier receives RF signals and amplifies those signals. The amplifier has an adjustable gain value. The signal detecti... | 05/15/2012 |
| 8170514 | Method for implementing continuous radio frequency (RF) alignment in advanced electronic warfare (EW) signal stimulation systems A method for using a “B” channel of a dual channel measurement receiver as a transfer standard for power measurement, which may include, in an exemplary embodiment, correlating a measurement made with an “A” channel of the dual channel measurement receiver t... | 05/01/2012 |
| 8131238 | Carrier signal detection A method of detecting a carrier signal includes generating a first signal that represents a strength of a received signal. A variable threshold signal is generated based on the first signal. A fixed threshold signal is generated. The method includes detecting whethe... | 03/06/2012 |
| 8014742 | Methods and apparatus for calibrating received signal strength indicators This disclosure discloses methods and apparatus for calibrating received signal strength indicators. ... | 09/06/2011 |
| 8014743 | Methods and apparatus for calibrating received signal strength indicators This disclosure discloses methods and apparatus for calibrating received signal strength indicators. ... | 09/06/2011 |
| 8005449 | Subsampling wideband RSSI circuit A Received Signal Strength Indicator (RSSI) circuit includes a subsampling circuit that processes an input signal comprising a sampling frequency, fs, wherein the subsampling circuit subsamples the input signal, wherein the input signal is subsampled to concentrate ... | 08/23/2011 |
| 7974598 | Methods and apparatus for calibrating received signal strength indicators This disclosure discloses methods and apparatus for calibrating received signal strength indicators. ... | 07/05/2011 |
| 7929933 | Noise suppression apparatus, FM receiving apparatus and FM receiving apparatus adjustment method Variations in characteristics due to individual differences among RFs cause differences between estimated noise spectrum patterns and actually occurring noise characteristics, resulting in variations in noise suppression capabilities. A pattern table stores, in adva... | 04/19/2011 |
| 7925233 | Methods for handling measurement reports in a wireless communication system A method of handling measurement reports for a mobile station of a wireless communications system includes: receiving a control message from the base station, wherein the control message is configured for asking the mobile station to transit from a first state to a ... | 04/12/2011 |
| 7920839 | System and method for station detection and seek in a radio receiver A system for detecting a broadcast channel in a radio receiver includes a receive signal strength indicator (RSSI) element configured to develop an RSSI signal that is representative of a power in a desired channel, a switchable bandwidth channel select filter havin... | 04/05/2011 |
| 7904042 | Fast image rejection Fast image rejection. Dual down conversion processing of a received signal by performing both low side injection and high side injection thereby generating a first down converted signal and a second down converted signal. Analysis of one or both of the first and sec... | 03/08/2011 |
| 7904043 | Method for implementing continuous radio frequency (RF) alignment in advanced electronic warfare (EW) signal stimulation systems A method for using a “B” channel of a dual channel measurement receiver as a transfer standard for power measurement, which may include in an exemplary embodiment: correlating measurements made with an “A” channel to measurements made with an RF Power Meter ... | 03/08/2011 |
| 7873338 | Method and apparatus for determining an appropriate link path in a multi-hop communication system A determination of link quality (CSR) is made from the subscriber station to a relay station. A determination of link quality (CRB) is made from the relay station to the base station, and a determination of link quality (CSB) is made... | 01/18/2011 |
| 7873339 | System for determining total isotropic sensitivity (TIS) using target received signal strength indicator (RSSI) value and related methods A test method is for determining total isotropic sensitivity (TIS) of a mobile wireless communications device using an RF source controllable to a plurality of source values having a relatively small uncertainty associated therewith. The mobile wireless communicatio... | 01/18/2011 |
| 7865160 | Mixed mode power measurement calibration and reporting in wireless communication networks A wireless communication user terminal having a receiver for receiving a signal having mixed modulation formats, wherein the terminal measures signal power on a portion of the signal received by the terminal, determines a modulation format on the portion of the sign... | 01/04/2011 |
| 7853226 | Peak-hold circuit and signal strength indicator using the peak-hold circuit A peak-hold circuit includes a differential amplifier having first and second transistors as a differential pair, the first transistor receiving an input signal at its gate, a third transistor connected between a first power supply and an output node connecting a ga... | 12/14/2010 |
| 7796965 | Method and circuit arrangement for field strength determination and integrated circuit Method and Circuit Arrangement for Field Strength Determination and Integrated Circuit is provided. In the method of the invention for determining the field strength of a carrier signal at an antenna of an antenna circuit of an electronic key, whereby the antenna ci... | 09/14/2010 |
| 7778615 | Signal level estimation in radio communication system An indicator of a strength of a signal comprising a training sequence portion received in a radio propagation environment is provided. Samples are taken from the training sequence portion, an energy value of the samples over an estimated channel impulse response is ... | 08/17/2010 |
| 7660567 | Digital received signal strength indicator (RSSI) circuit and method for detecting the strength of a received signal An improved Received Signal Strength Indicator (RSSI) circuit and method is provided herein for quickly and accurately detecting the strength of a received signal. The circuit described herein provides a more accurate RSSI signal, while consuming less power and die ... | 02/09/2010 |
| 7643811 | Method and system for interference detection A wireless communications device includes a first receiver and a second receiver. The first receiver is configured to receive a first wireless signal (such as a Bluetooth or WLAN signal), while the second receiver is configured to receive a second wireless signal (s... | 01/05/2010 |
| 7606543 | Signal quality indicator apparatus and method particularly useful for mobile telephones The quality of radio frequency signals received at a mobile phone or cellphone is sampled. The results are employed to produce a human discernible indication such as by blinking a received signal strength bar on a display. The bar remains constant without blinking i... | 10/20/2009 |
| 7460848 | Differential signal strength detector A signal detection circuit includes a first signal multiplier operably coupled to square an input signal, a second signal multiplier operably coupled to square a reference signal, and a filter module operably coupled to produce a digital output representative of the... | 12/02/2008 |
| 7440507 | Turbo channel estimation for OFDM systems A system and method for estimating a channel in a wireless receiver is disclosed. The method preferably applies to a communication system using the OFDM standard. The method comprises receiving a block of “n” transmitted symbols, the symbols including pilot symb... | 10/21/2008 |
| 7437132 | Receiving device, semiconductor integrated circuit, transmitting/receiving device, transport apparatus portable transmitting/receiving device, communication system and receiving method A receiving device includes a receiver circuit for outputting a received signal as a reception electric field intensity signal, an operation control circuit for controlling an operation of the receiver circuit, and an intermittent reception control circuit for outpu... | 10/14/2008 |
| 7436908 | UWB transceiving apparatus and method for dynamically reducing interference A UWB receiver having at least one communication module with a limited working band whose on/off state can be controlled. The UWB receiver is adapted to detect power intensity of a received radio signal in the limited working band based on an on/off state of said at... | 10/14/2008 |
| 7433661 | Method for improved performance and reduced bandwidth channel state information feedback in communication systems A method of transmitting information over a feed back channel of a communication system that has multiple antenna systems is provided. Long term channel condition information is obtained from received measured and/or calculated channel parameter values. The obtained... | 10/07/2008 |
| 7428424 | Apparatus and method for power control of downlink shared channel in mobile communication system An apparatus and method for controlling the transmission power of a DSCH in a mobile communication system is disclosed. In the DSCH transmission power controlling method, a UE generates information for controlling the transmission power of the DSCH based on a channe... | 09/23/2008 |
| 7424269 | System, method and device of radar detection Embodiments of the present invention provide a method, apparatus and system of radar detection. The method, according to some demonstrative embodiments of the invention, may include comparing an energy level of signals received over a wireless communication channel ... | 09/09/2008 |
| 7424297 | Soft handoff system, mobile terminal having the same, and soft handoff method Disclosed are a soft handoff system, a soft handoff method, and a mobile terminal equipped with the soft handoff system. The soft handoff system for a mobile terminal analyzes periodically monitored wireless conditions of neighbor base stations, transmits a PSMM (Pi... | 09/09/2008 |
| 7415256 | Received signal strength measurement circuit, received signal strength detection circuit and wireless receiver The RSSI circuit of the present invention includes: an IF amplifier section, which includes multiple stages of serially connected differential amplifiers for amplifying, with use of a current source IA provided as a power source for amplification, an IF signal corre... | 08/19/2008 |
| 7412246 | Method and system for improved wlan location Mobile units within an area are located using a wireless local area network. Reference signal transmitters are provided at selected fixed locations within the area. Reference signals are transmitted using the reference signal transmitters using a first selected chan... | 08/12/2008 |
| 7398104 | Mobile phone with wireless camera detection A mobile phone with wireless camera detection. A mobile phone converts the frequency band of a received signal to mobile signal frequency band (for example GSM, DSC or PCS) with added mixer, oscillator, and filter. The converted signal is treated as a mobile signal ... | 07/08/2008 |
| 7395548 | System and method for signal validation and leakage detection A system and method of validating signals and detecting signal leakage in a cable communications includes the steps of a) tuning a radio frequency receiver to a carrier frequency of a selected RF channel, b) measuring a signal level of the carrier frequency, c) off-... | 07/01/2008 |
| 7395043 | Data receiver adaptive to RSSI and a method of determining its threshold A modem generates a new RSSI threshold value in response to a flag signal representing the quality of the threshold value indicated by the result of error detection supplied from one monitor, and supplies the generated threshold value to another monitor. The RSSI th... | 07/01/2008 |
| 7392016 | Data transmission rate control A method includes monitoring a variable-rate data communication channel to determine its signal-to-noise ratio, and adjusting the data transmission rate of the variable rate data communication channel based on its signal-to-noise ratio. ... | 06/24/2008 |
| 7389107 | Reactive management of dropped calls in a wireless communication system A method and system is disclosed for reactively managing dropped calls in a wireless communication system. A mobile station determines that it has experienced a dropped call. In response, the mobile station allows a user to continue communicating, such as by recordi... | 06/17/2008 |
| 7379725 | LNA gain adjustment in an RF receiver to compensate for intermodulation interference A Radio Frequency (RF) receiver includes a low noise amplifier (LNA) and a mixer coupled to the output of the LNA. The gain of the LNA is adjusted to maximize signal-to-noise ratio of the mixer and to force the mixer to operate well within its linear region when an ... | 05/27/2008 |
| 7379864 | Method and apparatus for the detection of previous packet loss in non-packetized speech A method and apparatus for detecting previous packet loss in non-packetized speech by applying one or more filters to a segment of said non-packetized speech, each of said one or more filters determining an energy parameter value for a given frequency band of said s... | 05/27/2008 |
| 7369812 | Method and circuit arrangement for determining the signal strength in receivers with complex signal processing In order to provide a method of determining the signal strength in a receiver or transmitter with complex signal processing using the in-phase channel (I channel) and the quadrature channel (Q channel), by means of which it is also possible to reliably determine the... | 05/06/2008 |
| 7368876 | Plasma processing apparatus A low-cost plasma processing apparatus which permits reduction of the cost, as well as reduction of the loss of transmitted power. The plasma processing apparatus 1 has an apparatus main body 2 and auxiliary equipment 3. The auxiliary equipment ... | 05/06/2008 |
