Abstract: An audio processing system that includes an audio filter having one or more elements capable of having state, such as a capacitor, an inductor or a delay. A saturation detector is configured to detect saturation of the audio filter and to generate an output when saturation of the filter is detected, such as a switch control signal. A switch is connected to the audio filter and the saturation detector, wherein the state of one or more of the elements of the audio filter is changed when the saturation detector provides the output to the switch, such as when the switch shorts the element and causes the energy stored in the element to be dissipated.

Abstract: A capacitive voltage converter comprising a switched capacitor array having a voltage input and a voltage output. A skip gating control coupled to the switched capacitor array and configured to control a switching activity of the switched capacitor array. A resistance look-up table coupled to the switched capacitor array and configured to control a resistance value of the switched capacitor array.

Abstract: A circuit comprising 1) a master delay-locked loop comprising a phase detector for receiving a reference clock and generating an output, control logic for receiving the output from the phase detector and a delta delay input and generating a control output, a clock splitter for receiving the reference clock and generating differential clock output, a delay line for receiving the differential reference clock from the clock splitter and generating n phases of differential reference clock at output, a multiplexer for receiving the output from the delay line and the control logic output and generating a clock output, wherein the phase detector is for receiving the reference clock, and 2) a slave delay-locked loop for receiving the control logic output and a strobe input and generating a delay locked loop output.

Abstract: A method for continuously estimating reverberation decay comprising receiving a sequence of audio data samples. Determining whether a plateau is present in the sequence of audio data samples. Generating one or more reverberation parameters from the sequence of audio data samples if it is determined that the plateau is present.

Abstract: This disclosure provides systems and methods for detecting a change in environmental conditions utilizing sampling circuitry configured to sample an environmental sensor while a processor remains in a low-power state or a sleep state. According to some embodiments, a pre-filter performs a simplified analysis of the sensor samples to determine if the processor should wake and perform additional analysis on stored sensor samples. Specific examples are provided for detecting motion using passive infrared detectors. Accordingly, systems and methods for reducing the power consumption of a motion detection system are provided herein.

Abstract: Disclosed herein are systems and methods for sending and receiving facsimile transmissions in a voice-over-IP system. In certain embodiments, a facsimile machine may include a network interface and a call set up protocol client configured to interface with a call set up protocol server. The call set up protocol client may communicate with the call set up protocol server using the network interface to establish a communication channel with the public switched telephone network. The call set up protocol client may operate according to the session initiation protocol. The facsimile machine may be configured to send and receive facsimile transmissions according to the T.30 protocol. In alternative embodiments, the facsimile machine may be configured to send and receive facsimile transmissions according to the T.38 protocol.

Abstract: A dual-voltage receiver, comprising a voltage detector. A high voltage Schmitt trigger coupled to the voltage detector. A low voltage Schmitt trigger coupled to the voltage detector. A combined level shifter coupled to the high voltage Schmitt trigger and the low voltage Schmitt trigger, wherein the high voltage Schmitt trigger is on and the low voltage Schmitt trigger is off when the voltage detector outputs a high voltage detect signal.

Abstract: A database system comprising a node value stored in a first electronic data memory device sector. A lock state and access visa associated with the node value, such that if the visa is non-zero, the visa must be presented to access the node. A notification field associated with the node value, the notification field stored in a second electronic data memory device sector. An update processor configured to electronically retrieve and process the notification field if the node value is modified.

Abstract: An integrated circuit comprising a plurality of metal programmable revision identification (MPRI) cells, wherein each MPRI cell further comprises a plurality of metal layers, a plurality of vias and an output.

Abstract: There are provided semiconductor packages having corner pins and methods for their fabrication. Such a semiconductor package includes a leadframe and a die paddle, the leadframe having first and second edge sides meeting to form a first corner. The semiconductor package also includes edge pins arrayed substantially parallel to the first edge side and edge pins arrayed substantially parallel to the second edge side. In addition, the semiconductor package includes a first corner pin situated at the first corner, the first corner pin being electrically isolated from the die paddle.

Abstract: A system for signal processing comprising a cyclic analog to digital converter structure having a first stage and a second stage, wherein the first stage is configured to receive an input signal to perform 1.5 bits/stage ADC and to generate a first stage output signal, and the second stage is configured to receive the first stage output signal and to perform fine offset tuning using a final conversion phase. The second stage further configured to perform 1.5 bits/stage ADC and to generate a second stage output that is fed back to the first stage to iteratively generate a next 1.5 bits, until (N?3) most significant bits of N bits of data are generated. A third stage configured to generate a three least significant bits of the N bits of data using a flash ADC sampling circuit that samples a residue signal at the output of the first stage.

Abstract: This disclosure provides systems and methods for decoupling the mechanical drive systems of image scanners from the exposure system. A light source, such as an array of light-emitting diodes (LEDs), may be modulated in order to maintain a constant exposure for each scan-line, regardless of the document velocity. Accordingly, the present systems and methods allow for continuous document scanning at varying speeds. An automatic document feeder may dynamically adjust the velocity of a document without negatively impacting the exposure of the image scan. As the velocity of the document is changed, the modulation rate of the light source may be adjusted to maintain a constant exposure.

Abstract: Audio transducers (headphones, speakers, microphones) inherently do not accurately reproduce the signal presented to them at the input. This can be compensated for by taking into account the transducer characteristics and transforming the input signal using a digital signal processor (DSP) to counteract the inaccuracies. However, for the compensation to take place, the DSP needs to know the characteristics of the transducer. For systems with built-in transducers (like laptops with internal speakers) the characteristics of the internal speakers can be stored on the hard-drive of the laptop and the DSP can read this data and make the appropriate compensations. Because a transducer (headphone, speaker, microphone) has its own characteristics that need to be compensated for separately, a profile is supplied to the DSP either by a database lookup based on an identification made by the user or transducer itself or by profile information stored on the transducer.

Abstract: Stations in standby mode periodically wake up to check for buffered data at the access points. Traditionally, the information is available by checking the periodic beacon frame for a traffic indication map (TIM). Unfortunately, the length of beacons has steadily increased with the progression of the various wireless standards requiring stations to wake up for longer periods to merely check for buffered data. Several approaches are disclosed which address this shortcoming, including the broadcast of TIM frames, the partial reception of beacon frames and the use of an embedded TIM frame within a beacon frame.

Abstract: A system for halftone processing is provided. The system includes a programmable halftone segmentation system having one or more programmable parameters to accommodate different input image parameters, such as different printer or scanner parameters, and configured to generate output control data as a function of image input data. A programmable output processor receives the output control data and the image input data and generates image output data that compensates for halftone regions in the image input data.

Abstract: Disclosed herein are systems and methods of combined Bluetooth and WLAN signaling. Such systems and methods may use a Bluetooth connection to signal WLAN capabilities and to exchange WLAN security keys. Once the file transfer has started, the actual data may be transmitted over the WLAN connection rather than over the Bluetooth connection. The WLAN connection may have a much higher throughput than the Bluetooth connection, and WLAN capability has increasingly become present inside Bluetooth enabled devices. The Bluetooth connection may be used as a control channel, while the WLAN connection may be used for data transfer.

Abstract: A level shifter comprising a first driver transistor receiving an input signal. A gate-controlled transistor coupled to the first driver transistor. A second driver transistor coupled to the gate controlled transistor. An output coupled to the second driver transistor, wherein the gate-controlled transistor is for receiving a predetermined gate voltage when the output voltage exceeds a predetermined value.

Abstract: Systems and methods for coexistence of WLAN and Bluetooth networks are described. At least one embodiment includes a method for operating a wireless device in both a 802.11 network and a Bluetooth network. In accordance with some embodiments, the method comprises monitoring transmission of Synchronous Connection Oriented (SCO) slots over the Bluetooth network, informing an access point (AP) in the 802.11 network not to transmit to the device before the end of an SCO slot, transmitting a power save trigger to the AP to retrieve buffered data from the AP, and transmitting data to the AP.

Abstract: There is provided a method for use in a computer for redirecting an audio stream from a first audio endpoint to a second audio endpoint in the computer having a controller and a computer operating system for execution by the controller. The method includes directing the audio stream from a client application running on the computer operating system through a first audio resource stack of the computer to the first audio endpoint. The method further includes creating an audio endpoint bridge using the computer operating system, where the audio endpoint bridge provides a path for the audio stream to be directed from the first audio resource stack to pass through a second audio resource stack to the second audio endpoint. The method may also enhance the audio stream to reduce noise and redirect the audio stream to the second audio endpoint using the audio endpoint bridge.

Abstract: A device comprising a detector configured to receive an indication from a terminal of a connector and to determine whether the indication matches an expected result. One or more first switches are configured to connect one or more speaker transducers to the connector if the indication is false. One or more second switches are configured to connect the one or more speaker transducers to a digital output converter if the indication is true. The device can also include one or more third switches configured to connect one or more microphone elements to the connector if the indication is false, and one or more fourth switches configured to connect one or more microphones to a digital input converter if the indication is true. The input and output converters can be stand alone or part of a digital signal processor.