1181 results about "Digital interface" patented technology

A power supply provides digital data coupling for power-line networking. The power supply includes a power supply side digital interface to transmit and receive a digital data passed through a digital coupler to and from a power-line network access circuitry side digital interface of power-line network access circuitry. The power supply further includes a digital-to-analog converter to process digital data into a high-frequency analog data carrier to provide to a power line of a power-line network. An analog-to-digital converter of the power supply converts a high-frequency analog data carrier from the power line into digital data for the power-line network access circuitry. A power-line analog front end of the power supply transmits and receives the high-frequency analog data carrier to and from the power line. Digital data exchanged between the power supply and the network access circuitry may include control signals for a control circuitry of the power supply. Control circuitry of the power supply may handle control of the digital-to-analog converter, the analog-to-digital converter and the analog front end.

A digital home audiovisual Information recording and playback apparatus includes a microprocessor associated, through a digital interface, with a display, through another interface with sound playback structure and through a telecommunications interface with structure for loading audio selection or visual selection digital information. The system includes structure for controlling the display, enabling an operating mode to be selected from a menu of three modes, in which the device either plays back information stored in its mass memory, records new digitized information in its mass memory or combines analog information from a microphone with digitizer information received from the mass memory.

A Micro Inertial Measurement Unit (IMU) which is based on MEMS accelerometers and gyro sensors is developed for real-time recognition of human hand motions, especially as used in the context of writing on a surface. Motion is recorded by a motion / acceleration sensor, which may be a combination of a rate rate gyro and an accelerometer, and possibly in combination with a video camera set to detect markers located on a board, with the camera utilizable to detect lines and markers and to determine the proximity of the white board. The immediate advantage is the facilitation of a digital interface with both PC and mobile computing devices and perhaps to enable wireless sensing.

An electric arc welding system for creating an AC welding arc between an electrode and a workpiece wherein the system comprises a first controller for a first power supply to cause the first power supply to create an AC current between the electrode and workpiece by generating a switch signal or command with polarity reversing switching points in the first controller, with the first controller operated at first welding parameters in response to first power supply specific parameter signals to the first controller. The system has at least one slave controller for operating a slave power supply to create an AC current between the electrode and workpiece by reversing polarity of the AC current at switching points where the slave controller is operated at second welding parameters in response to second power supply specific parameter signals to the slave controller. An information network connected to the first controller and the slave controller and containing digital first and second power supply specific parameter signals for the first controller and the slave controller and a digital interface connects the first controller with the slave controller to control the switching points of said second power supply by the switch signal or command from the first controller.

A head mounted device provides an immersive virtual or augmented reality experience for viewing data and enabling collaboration among multiple users. Rendering images in a virtual or augmented reality system may include capturing an image and spatial data with a body mounted camera and sensor array, receiving input indicating a first anchor surface, calculating parameters with respect to the body mounted camera and displaying a virtual object such that the virtual object appears anchored to the selected first anchor surface. Further rendering operations may include receiving a second input indicating a second anchor surface within the captured image that is different from the first anchor surface, calculating parameters with respect to the second anchor surface and displaying the virtual object such that the virtual object appears anchored to the selected second anchor surface and moved from the first anchor surface.

A frequency and protocol agile wireless communication product, and chipset for forming the same, including a frequency agile transceiver, a digital interface circuit for interconnecting the radio transceiver with external devices, protocol agile operating circuit for operating the radio transceiver in accordance with one of the transmission protocols as determined by a protocol signal and an adaptive control circuit for accessing a selected wireless communication network and for generating the frequency control signal and the protocol control signal in response to a user defined criteria Among the possible user defined criteria would be (1) the cost of sending a data message, (2) the quality of transmission link (signal strength, interference actual or potential), (3) the potential for being bumped off of the system (is service provider at near full capacity), (4) the security of transmnission, (5) any special criteria which the user could variably program into his omni-modal wireless product based on the user's desires or (6) any one or more combinations of the above features that are preprogrammed, changed or overridden by the user. The disclosed invention allows wireless service providers to broadcast electronically as part of any “handshaking” procedure with a omni-modal wireless product information such as (1) rate information and (2) information regarding system operating characteristics such as percent of system capacity in use and / or likelihood of being dropped. The disclosed invention creates a user oriented source enrollment and billing service in the wireless data market by establishing uniform standard for “handshakes” to occur between cell service providers and omni-modal wireless products. In addition, the disclosed invention can be implemented on a standard chip or chipset including a radio transceiver specifically designed to be used in all types of omni-modal wireless products.

This present invention includes an indoor unit (IDU) and compact outdoor unit (ODU) having an intermediate frequency / modem circuit, millimeter wave transceiver circuit, and digital interface between the IDU and the ODU capable of up to about 100 MBps data rate over at least about a 300 meter cable. The system uses a conversion to the polar coordinate system completes calculations in the polar coordinate system, reducing the computational requirements, and therefore, the size and cost of the system.

A method and digital camera for capturing images to be provided to a service provider. The camera includes a capture device for capturing digital images; a memory for storing the captured digital images; an interface to a communications device for transmitting the stored images to a service provider; wherein the digital interface automatically transfers images to the network service provider during a specified time period. Rechargeable batteries may be provided for powering the digital camera; wherein the communications device recharges the batteries using the interface. The camera may further include a display for displaying digital files stored in the digital memory and displaying the at least one order status confirmation file on the display.

A method and apparatus for the transmission and reception of broadcasted instrumental music, vocal music, and speech using digital techniques. The data is structured in a manner similar to the current standards for MIDI data. Transmitters broadcast the data to receivers which contain internal sound generators or an interface to external sound generators that create sounds in response to the data. The invention includes transmission of multiple audio data signals for several languages on a conventional radio and television carrier through the use of low bandwidth data. Error detection and correction data is included within the transmitted data. The receiver has various error compensating mechanisms to overcome errors in data that cannot be corrected using the error correcting data that the transmitter sent. The data encodes for elemental vocal sounds and music.

A method, apparatus, and computer program product embodied on a hardware computer readable storage medium for compensating mismatched delays in at least two signals of a mobile display digital interface (MDDI) system. The method, apparatus, and computer program product embodied on a hardware computer readable storage medium sends a skew calibration packet from a host to a client. The host begins a calibration pattern; then toggling a data signal and a strobe signal at a substantially similar time which strobe signal is used by the client as a clock source. The method, apparatus, and computer program product embodied on a hardware computer readable storage medium also aligns a timing of the strobe signal and the data signal by providing varying delays and resetting the client to an original clock source before a next packet reception.

A docking station for a mobile computing device such as, for example, a Palm PC, a personal digital assistant, a cellular phone, or any of a variety of other types of handheld computing devices which have their own LCD displays. The docking station provides a variety of functions to the mobile computing device including: telephone, videophone, fax, digital answering machine, printing, keyboard, modem, internet access digital interface ports for connection to a variety of peripherals including scanners, cameras, disk drives and a number of other peripherals in addition to providing the two typical functions of existing docking stations, i.e., providing power charging to the mobile computing device's rechargeable battery and providing a digital connection between the mobile computing device and a personal computer.

A removable antenna assembly and wireless access point including the same is disclosed in which a plurality of antenna elements are provided for transmitting and receiving wireless signals over a plurality of wireless channels. A sectorized mounting structure is provided for retaining each of the plurality of antenna elements substantially in an antenna isolation configuration, so as to enable simultaneous sectorized signal communication of the antenna elements over the wireless channels. A removable network interface is provided for selectively enabling a signal connection between a radio digital interface component and the plurality of antennas.

An enhancement that reduces the digital interface rate of analog-to-digital (A / D) and digital-to-analog (D / A) converters through the use of compression and decompression is described. The present invention improves A / D converters by compressing the sampled version of the A / D converter's analog input signal in real time, thereby significantly decreasing the required bit rate of the A / D converter's digital interface. Similarly, the present invention improves D / A converters by decreasing the required bit rate of the D / A converter's digital interface. D / A converters enhanced by the present invention include a decompressor that decompresses the D / A converter's compressed digital input in real time, prior to conversion to an analog output signal. The present invention's simplicity and its ability to be implemented using multiple compression and decompression elements allow its use in A / D and D / A converters with arbitrarily high sampling rates. By selecting a desired compression ratio during lossy compression, users of the present invention can precisely control the bit rate of the A / D and D / A converter's digital interface. Users of the present invention can dynamically choose the desired balance between the quality and the bit rate of A / D and D / A converters by adjusting various compression and decompression control parameters.

A Micro Inertial Measurement Unit (IMU) which is based on MEMS accelerometers and gyro sensors is developed for real-time recognition of human hand motions, especially as used in the context of writing on a surface. Motion is recorded by a rate gyro and an accellerometer and communicated to a Bluetooth module, possibly to a computer which may be 20 to 30 feet or more from the sensor. The motion information generated and communicated is combined with appropriate filtering and transformation algorithms to facilitate a complete Digital Writing System that can be used to record handwriting on any surface, or on no surface at all. The overall size of an IMU can be less than 26 mm×20 mm×20 mm, and may include micro sensors, a processor, and wireless interface components. The Kalman filtering algorithm is preferably used to filter the noise of sensors to allow successful transformance of hand motions into recognizable and recordable English characters. The immediate advantage is the facilitation of a digital interface with both PC and mobile computing devices and perhaps to enable wireless sensing.

A method and system are disclosed for a compact, inexpensive ultrasound system using an off-the-shelf personal digital assistant (PDA) device interfacing to a hand-held probe assembly through a standard digital interface. The hand-held probe assembly comprises a detachable transducer head attached to a beamforming module that performs digital beamforming. The PDA runs Windows applications and displays menus and images to a user. The PDA also runs ultrasound data processing software to support a plurality of imaging modes. An internal battery is provided in the PDA to power the system. The transducer head is detachable from the beamforming module.

An optical proximity sensor assembly includes an optical proximity sensor with an IR LED emitting light having an infrared wavelength, an IR photo detector sensitive to the infrared wavelength, an optical barrier blocking direct light rays from the LED to the IR photo detector and permitting reflected light rays to reach the at least one photo detector; and an electronic integrated circuit with an amplifier for amplifying a signal detected by the photo detector, an analog to digital converter, LED drivers, noise reduction and ambient light cancellation circuitry, and a digital interface for communication with a microcontroller. The optical proximity sensor is accommodated on a wearable carrier. A single sensor may include a plurality of identical or different LEDs, a plurality of photodiodes, or both. Also, several sensors may be placed on a person's skin along a vascular path to obtain data relating to blood flow and artery stiffness.

An extended Secure-Digital (SD) card has a second interface that uses some of the SD-interface lines. The SD card's mechanical and electrical card-interface is used, but 2 or 4 signals in the SD interface are multiplexed for use by the second interface. The second interface can have a single differential pair of serial-data lines to perform Universal-Serial-Bus (USB) transfers, or two pairs of differential data lines for Serial-Advanced-Technology-Attachment (SATA), Peripheral Component Interconnect Express (PCIE), or IEEE 1394 transfers. A card-detection routine on a host can initially use the SD interface to detect extended capabilities and command the card to switch to using the second interface. The extended SD card can communicate with legacy SD hosts using just the SD interface, and extended SD hosts can read legacy SD cards using just the SD interface, or extended SD cards using the second interface. MultiMediaCard and Memory Stick are alternatives.

The present invention is directed to devices and methods for carrying out and / or monitoring biological reactions in response to electrical stimuli. A programmable multiplexed active biologic array includes an array of electrodes coupled to sample-and-hold circuits. The programmable multiplexed active biologic array includes a digital interface that allows external control of the array using an external processor. The circuit may monitor, digitally control, and deliver electrical stimuli to the electrodes individually or in selected groups.

Digital and analog functionality are separated and optimized in an Ethernet port architecture to free port circuit space for additional desired functionality. A power controller and physical link controller for the port share a high speed communication link to transfer information and control instructions from one to the other. The physical link controller provides digital functionality and processing capabilities that can generate power control instructions sent to the power controller over the high speed link. The power controller provides analog functionality for controlling the power supplied to the network connection and transfers power related information to the physical link controller over the high speed communication link and receives control instructions through a digital interface. The separation of digital of analog functionality simplifies the power control circuitry, removes redundancy, and frees valuable circuit board space for other desired functionality.

A series of holograms is recorded by synchronizing a camera with laser pulses under the control of a digital delay generator. Amplitude and phase images are calculated while image distances are adjusted for the best focus on the object under observation. The amplitude and phase images are reconstructed while adjusting the image distances over a predetermined range to maintain the object in focus. Numerical superposition of a plurality of holographic fields taken with varying wavelengths provides high resolution microscopic three-dimensional imaging. Numerical reconstruction is based on an angular spectrum method that enables calculation of the image at any distance from the hologram plane. Wavelength scanning digital interference holography also enables image reconstruction along an arbitrarily tilted plane.

A method and an apparatus for an ultrasound system provide compression of ultrasound signal samples after analog to digital conversion and before beamforming. The analog ultrasound signals received from an array of ultrasound transducer elements are digitally sampled by a plurality of analog to digital converters (ADCs) to produce a plurality of sequences of signal samples. Each sequence of signal samples is compressed to form a corresponding sequence of compressed samples. The resulting sequences of compressed samples are transferred via a digital interface to an ultrasound signal processor. At the ultrasound signal processor, the received sequences of compressed samples are decompressed. The typical processing operations, such as beamforming, downconversion and detection, are applied to decompressed samples. This abstract does not limit the scope of the invention as described in the claims.

A radio system includes a radio frequency (RF) integrated circuit (IC) and a baseband digital signal processing (DSP) IC. A serial digital interface couples data between the RF IC and the DSP IC to provide a high data rate and low noise. In one embodiment, the RF IC has a single bit sigma delta modulator to convert an analog signal into a serial digital bit stream, and a differential output driver to drive the serial digital bit stream as a differential data signal. In one embodiment, the DSP IC has a differential input receiver to receive the differential data signal and generate the serial digital bit stream therein, a decimator to lower the data rate of the serial digital bit stream and convert it into parallel digital data samples, and a demodulator to digitally demodulate the parallel digital data samples into data words for digital signal processing.

Aspects of a method and system for a multi-band direct conversion CMOS mobile television tuner are provided. A single-chip multi-band RF receiver in a mobile terminal comprising UHF and L-band front-ends receives and amplifies an RF signal utilizing an LNA integrated into the front-end that corresponds to the type of signal received. A received signal strength indicator (RSSI) value may be determined for the amplified signal within the single-chip receiver and may be utilized to adjust a gain of the LNA. The adjustment may be made via on-chip or off-chip processing of the RSSI value. The single-chip receiver may directly convert the amplified signal to a baseband frequency signal and generate in-phase and quadrature components. The components of the baseband frequency signal may be filtered and / or amplified via programmable devices within the single-chip receiver. Circuitry within the single-chip receiver may be controller via an on-chip digital interface.

In an ultrasound imaging system that applies a beamformer to received ultrasound signal samples to form one or more beams represented by arrays of beamformed samples, a method and an apparatus compress each array of beamformed samples independently of the other arrays to form compressed beams. A plurality of analog to digital converters sample multiple analog ultrasound signals produced by a transducer array to provide multiple streams of ultrasound signal samples to the beamformer. The compressed beams are transferred via a digital interface to a signal processor. At the signal processor, the compressed beams are decompressed to form decompressed beams. The signal processor further processes the decompressed beams for diagnostic imaging, such as for B-mode and Doppler imaging, and scan conversion to prepare the resulting ultrasound image for display. This abstract does not limit the scope of the invention as described in the claims.

An enhancement that reduces the digital interface rate of analog-to-digital (A / D) and digital-to-analog (D / A) converters through the use of compression and decompression is described. Improved A / D converters compressing a sampled version of an A / D converter's analog input signal in real time, thereby significantly decreasing the required bit rate of the A / D converter's digital interface. Similarly, improved D / A converters decrease the required bit rate of the D / A converter's digital interface. D / A converters include a decompressor that decompresses the D / A converter's compressed digital input in real time, prior to conversion to an analog output signal.

An exercise unit (20) and system (104) comprising a target (22) having at least one area (24) to be stuck by a user and at least one sensor (26) located at the area (24) is disclosed. The sensor (26) generates an electrical signal in response to being struck by the user. A processor (48) is in operative communication with the sensor (26) and a musical instrument digital interface (MIDI) converter (50) is disposed between the sensor (26) and the processor (48). The MIDI converter (50) converts the electrical signal from the sensor (26) to a MIDI signal and transmits the MIDI signal to the processor (48) for generating a MIDI strike track (52). The MIDI strike track (52) is used to determine an accuracy and a force of the strike by the user to provide interaction and feedback to the user to continue to help motivate the user.

The problem to be solved is that once copyright claimed AV data is passed to application software, the application software can freely process the AV data for recording, etc., defeating the purpose of copyright protection. The invention provides a computer which comprises a system section 12 and an application software section 13, and which takes in copyright claimed, encrypted data via a digital interface 1 for processing therein, wherein the system section 12 judges that the application software section 13 is legitimate application software for the protection of copyright, and if the application software is a legitimate one, the system section 12 passes a key for the encrypted data to the application software section 13.

A digital data transmitting apparatus including a reproducing device classifies serial packet data that are read at a variable rate from a digital data medium and demodulates into at least picture data, audio data and other data, an MPEG transport stream (MPEG-TS) generating device generates an MPEG-TS based on the digital data, and a digital interface device converts the generated MPEG-TS into digital transmission data and transmits the digital transmission data at a predetermined transmission rate. A digital data receiving apparatus including a digital interface device is operable at a predetermined transmission rate, a digital data receiving device receives digital data via the digital interface device, an MPEG-TS reproducing device reproduces an MPEG-TS from the received digital data, a reproducing device classifies the reproduced MPEG-TS into at least picture data, audio data, and private data, and a control device controls the reproducing device based on the private data.