5 results about "Digital interface" patented technology

A telemetry base receives signals from at least one telemeter implanted in at least one animal. The base includes the following: a. a plurality of antennae to receive radiofrequency (RF) signals from the telemeter(s); b. a plurality of multiplexers connected to the antennae to increase the RF signal strength; c. at least one receiver circuit capable of processing RF signals from the antennae into electrical impulses; d. a central processing unit (CPU) to receive and process the electrical impulses into at least one parameter such as temperature; e. at least one digital address bus connected to the CPU and the multiplexer to select the antenna based on the best signal integrity of the antenna; f. a display to show the current parameters from the telemeters for analysis by the operator; and g. at least one analog-to-digital interface for receiving data from other external sensors.

The invention belongs to the field of piano teaching, and particularly relates to a low-delay real-time interaction system for piano teaching, which is characterized in that: an electronic piano or MIDI (Musical Instrument Digital Interface) equipment of a teacher or a student is connected with computer equipment through an MIDI data line; mIDI signal transmission: the browser transmits and receives MIDI signal data through a communication protocol between the electronic musical instrument and the computer; numerical values corresponding to the keys change colors; after receiving the MIDI signal data, outputting data that note elements corresponding to keys are converted from white or black to other colors through a keyboard pressing event of a webpage script language, and outputting in the opposite directions when a keyboard bounces up; a WebRTC protocol is used for transmitting MIDI signal data; pushing the stream to a cloud streaming media server; audio and HTML5 simulation piano pictures are pushed to a cloud streaming media server in a low-delay manner through a WebRTC protocol, so that teachers or students can visually see specific piano keys when playing the piano.

The invention discloses a microelectrode amplifier. The microelectrode amplifier comprises a microelectrode input circuit, a sampling resistor, a signal follower, a first signal conditioning circuit,a second signal conditioning circuit, a third signal conditioning circuit, a fourth signal conditioning circuit, an adder, a first digital-to-analog conversion unit, a second digital-to-analog conversion unit, a third digital-to-analog conversion unit, an analog-to-digital conversion unit, a processor, a single-pole switch and an interface unit. The interface unit comprises a return-to-zero outputinterface used for outputting return-to-zero signals, an output interface used for outputting compensated signals, and a digital interface used for outputting pole resistance values. According to themicroelectrode amplifier, the invention is not only applied to a cell research, but also can be applied to an environmental detection, and the amplifier is small in size, low in cost, stable in performance, and is not limited to the precision of electronic devices, and a pole resistance measurement, a quick return-to-zero operation and a negative capacitance compensation can be realized.

An optimum quantization rounding process can be executed regardless of which of a digital interface or an analog interface is selected. Which of the analog interface or the digital interface is used as an input interface of a video signal is selected by an operation panel. An input selection signal and a round setting signal are outputted from a system controller. The proper input interface is selected on the basis of the input selection signal and the round setting signal is supplied to an MPEG encoder. In the encoder, quantization rounding precision upon quantization is set in accordance with a quantization scale value and is set in accordance with the selection of the analog interface or the digital interface in response to the round setting signal.