620 results about "Continuous signal" patented technology

Method and apparatus for processing transmitted data. A sampling circuit preferably performs lossy sampling of a continuous signal to provide a corresponding sequence of discrete samples at a sampling rate less than a Nyquist rate of the continuous signal. A processing circuit reconstructs an informational content of the continuous signal from the discrete samples, and operates to periodically insert additional samples into the sequence, which preferably increases an effective rate of said sampling to match or exceed the Nyquist rate. Preferably, the lossy discrete samples are temporarily stored in a memory space prior to reconstruction by the processing circuit. The sampling circuit preferably comprises an analog-to-digital converter (ADC) of an analog front end (AFE). The processing circuit preferably comprises a digital back end (DBE) employing partial-response, maximum-likelihood (PRML) detection. The additional samples are preferably provided by an iterative timing recovery (ITR) block of the DBE.

A blood pump system includes a blood pump having a motor with a rotor and a stator. The stator has a plurality of stator windings situated therein. A motor controller is coupled to the motor, and a processor has inputs coupled to the motor controller for receiving a time continuous signal from the pump. The processor is programmed to transform the time continuous signal to the frequency domain, and control the pump and detect excess suction in response to the time continuous signal in the frequency domain.

A method and apparatus for controlling a brushless DC (BLDC) motor over a wide range of angular speeds is presented. Analog magnetic sensors provide continuous signal measurements related to the rotor angular position at a sample rate independent of rotor angular speed. In one embodiment, analog signal measurements are subsequently processed using an arctangent function to obtain the rotor angular position. The arctangent may be computed using arithmetic computation, a small angle approximation, a polynomial evaluation approach, a table lookup approach, or a combination of various methods. In one embodiment, the BLDC rotor is used to drive a Roots blower used as a compressor in a portable mechanical ventilator system.

A game machine includes, an operating portion, a signal detector, a prompter, a determination receiver and a speed changer. The operating portion outputs a signal in accordance with a player's operation for proceeding a game. The signal detector detects either a consecutive signal within a predetermined period of time or an intermittent signal within a predetermined period of time from the operating portion. The prompter prompts a player to determine whether to change a speed of progress in the game when either the consecutive signal or the intermittent signal is detected. The determination receiver receives a player's determination regarding the change of the speed of progress in the game. The speed changer changes the speed of progress in the game in accordance with the player's determination when the player's determination is received.

The embodiment of the invention relates to a signal processing method, signal processing equipment and a signal processing system for a passive optical network (PON). The signal processing method for the PON comprises the following steps of: performing baseband coding on a received service signal; modulating the service signal subjected to baseband coding to an allocated orthogonal frequency division multiple access (OFDMA) subcarrier in an orthogonal frequency division multiplexing (OFDM) modulation mode; performing digital-to-analog conversion on the modulated OFDMA subcarrier to acquire an electric domain OFDMA signal; modulating the electric field OFDMA signal to an uplink optical signal to acquire an optical domain OFDMA signal; and sending the optical domain OFDMA signal. In the embodiment of the invention, continuous optical signals can be acquired in the OFDMA modulation mode, and can perform optical power compensation so as to support remote transmission; and compared with equipment for transmitting and receiving a burst signal, equipment for transmitting and receiving the continuous signals is low in cost, so that the construction cost of the network is reduced.