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Apparatus and associated method for improving signal communication in electronic circuits

A signal communication and electronic circuit technology, applied in the field of information communication, can solve the problems of digital logic 1 signal damage and difficult digital signal communication, etc.

Inactive Publication Date: 2019-12-03
SILICON LAB INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Additionally, noise and interference can sometimes make it more difficult to properly communicate digital signals
For example, a digital logic 1 signal can be corrupted in the presence of noise, causing the receiving circuit to interpret it as a logic 0 signal, or even as an indeterminate signal

Method used

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  • Apparatus and associated method for improving signal communication in electronic circuits
  • Apparatus and associated method for improving signal communication in electronic circuits
  • Apparatus and associated method for improving signal communication in electronic circuits

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Embodiment Construction

[0032] The disclosed concept relates generally to improved signal communication within and / or between electronic circuits, including systems, assemblies, subsystems, systems, modules, integrated circuits (ICs), and the like. More specifically, the present invention provides an apparatus and technique for communication of non-ideal signals such as digital signals having different voltage levels and / or power supply levels, digital signals in the presence of noise or interference, and the like.

[0033] For example, an MCU communicating with off-board components will often have to accommodate poorly formed digital signals. Buttons, shaft encoders, and some other circuitry may generate several pulses when transitioning from one logic level to another. MCUs used in industrial environments tend to experience considerable amounts of electrical noise, especially on the input lines, where large decoupling capacitors are impractical.

[0034] The MCU's digital input can be coupled to t...

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Abstract

Apparatus for improved signal communication in electronic circuitry and associated methods. An apparatus includes a microcontroller unit (MCU). The MCU includes a buffer and an analog comparator that are coupled to an input of the MCU. The MCU is adapted to selectively determine a logic value of a digital signal applied to the input of the MCU from an output signal of the buffer or from an output signal of the analog comparator.

Description

[0001] Cross References to Related Applications [0002] This patent application is a continuation-in-part (CIP) of US Patent Application 13 / 731,080, filed December 30, 2012, which claims priority to US Provisional Patent Application 61 / 666,837, filed June 30, 2012. The foregoing application is hereby incorporated by reference in its entirety for all purposes. technical field [0003] The present invention relates generally to communication of information (eg, signals) in electronic circuits, and more particularly to apparatus and related methods for improving communication of signals with varying levels and / or presence of noise. Background technique [0004] Digital electronics has proliferated into applications that previously communicated using analog signals. For example, instead of transmitting an analog signal from a transducer, designers sometimes digitize the signal and transmit the resulting digital signal to another circuit, such as a processor, microcontroller un...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/66
Inventor A·L·维斯特维克
Owner SILICON LAB INC
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