| Patent application number | Description | Published |
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| 20080297239 | OPTIMIZED GAIN FILTERING TECHNIQUE WITH NOISE SHAPING - A noise shaping and voltage gain filtering third order electrical circuit and method comprises at least one pair of input resistors; a Frequency Dependent Negative Resistance (FDNR) filter positioned in between the at least one pair of input resistors; a feedback resistor; and an amplifier operatively connected to the feedback resistor and the at least one pair of input resistors, wherein as an electrical signal is introduced to the electrical circuit, the FDNR filter is adapted to filter signal blockers out of the electrical signal prior to the electrical signal reaching the amplifier for signal amplification, wherein the FDNR filter does not contribute noise to a signal-to-noise ratio (SNR) of the electrical signal, and wherein a transfer function of the FDNR filter is substantially elliptical in shape. | 12-04-2008 |
| 20090021228 | INTEGRATED CMOS DC-DC CONVERTER IMPLEMENTATION IN LOW-VOLTAGE CMOS TECHNOLOGY USING LDO REGULATOR - An electrical circuit and method of power management of a cellular telephone includes a battery adapted to produce a battery voltage; a LDO regulator operatively connected to the battery and adapted to provide a constant supply voltage from the battery voltage; and a DC-DC converter operatively connected to the LDO regulator, wherein the DC-DC converter is adapted to step down the constant supply voltage to a lower voltage level, wherein the LDO regulator and the DC-DC converter are embedded on a single integrated circuit chip. The constant supply voltage equals 3.6V at an output of the LDO, and the constant supply voltage is applied to an input of the DC-DC converter. Moreover, the battery voltage equals at most 5.5V. | 01-22-2009 |
| 20090115458 | CMOS COMPARATOR WITH HYSTERESIS - A complementary metal oxide semiconductor (CMOS) comparator circuit includes a plurality of p-type metal-oxide-semiconductor (PMOS) transistors receiving an input voltage signal, a plurality of n-type metal-oxide-semiconductor (NMOS) transistors operatively connected to the PMOS transistors and adapted to receive the input voltage signal, and an inverter adapted to invert the input voltage signal into an output voltage signal. An effective aspect ratio of the PMOS and NMOS transistors may be dependent on the level of the output voltage signal from the inverter. When a digital output of the inverter is “1”, the effective aspect ratio of the NMOS transistor is increased by turning on a second NMOS transistor, and a threshold voltage of the inverter is decreased. | 05-07-2009 |
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| 20090094026 | METHOD OF DETERMINING AN ESTIMATED FRAME ENERGY OF A COMMUNICATION - A method of processing a communication includes determining an estimated excitation energy component of a subframe of a coded frame. A filter energy component of the subframe is also estimated. Determining an estimated energy of the subframe is based upon the estimated excitation energy component and the estimated filter energy component. This technique allows for estimating frame energy of a communication such as a voice communication without having to fully decode the communication. | 04-09-2009 |
| 20090147143 | VIDEO QUALITY ANALYSIS USING A LINEAR APPROXIMATION TECHNIQUE - A video analysis technique includes correlating frames from a processed video with frames from a pre-processed, original video. A linear approximation of a relationship between the correlated frames is determined. A disclosed example includes determining a linear approximation that maximizes the number of processed video frames that fit into the linear approximation. The linear approximation and whether any frames do not fit within the linear approximation is then used to provide quality information for analyzing a quality of the processed video. | 06-11-2009 |
| 20090285099 | METHOD AND APPARATUS FOR PROVIDING CONGESTION CONTROL IN RADIO ACCESS NETWORKS - The invention includes a method and apparatus adapted for controlling congestion in a Radio Access Network (RAN). In one embodiment, a method includes monitoring packets received at a first network element of the RAN for an indication of congestion, where the packets are associated with a quality-of-service class, and, in response to detecting an indication of congestion in at least one of the received packets, signaling congestion status information from the first network element of the RAN toward a second network element of the RAN that is adapted for applying congestion control for the quality-of-service class. In one embodiment, a method includes receiving, at a first network element of the RAN, from a second network element of the RAN, congestion status signaling indicative of a congestion condition associated with a quality-of-service class, and applying congestion control for the quality-of-service class in response to receiving the congestion status signaling indicative of the congestion condition. | 11-19-2009 |
| 20090296613 | METHOD AND APPARATUS FOR PROVIDING QUALITY-OF-SERVICE IN RADIO ACCESS NETWORKS - The invention includes a method and apparatus adapted for providing quality-of-service to a packet flow within a Radio Access Network (RAN). In one embodiment, a method includes receiving packets of a packet flow at a first network element of the RAN, where the packet flow is associated with an application normally served in a best effort service class of the RAN and each packet of the packet flow comprises an indication of a quality-of-service policy to be applied to the packet flow within the RAN, and, applying the indicated quality-of-service policy to the packet flow within the RAN. The quality-of-service policy to be applied to the packet flow within the RAN is based on at least one characteristic of the packet flow, which may be determined in any manner, such as using information included in the packet headers, using deep packet inspection techniques, and the like. The indication of the quality-of-service policy to be applied to the packet flow within the RAN may be set either inside the RAN or outside the RAN. | 12-03-2009 |
| 20100054454 | Method and apparatus for the detection and suppression of echo in packet based communication networks using frame energy estimation - A method and apparatus for use in suppressing acoustic echo in a target speech signal being transmitted through a packet-based communications network uses frame energy estimation applied to the target speech signal and to a reference speech signal. The method or apparatus estimates one or more reference speech energy levels in one or more reference packets based on one or more of the speech parameters generated by the speech encoding of the reference signal; estimates a target speech energy level in a target packet based on one or more of the speech parameters generated by the speech encoding of the target signal; compares the target speech energy level to one or more reference speech energy levels; and detects an echo in the target speech signal based on the comparison of the target speech energy level to the one or more reference speech energy levels. | 03-04-2010 |
