By a News Reporter-Staff News Editor at Journal of Engineering -- From Alexandria, Virginia, VerticalNews journalists report that a patent by the inventor Duan, Yijun (Shenzhen, CN), filed on December 11, 2015, was published online on August 8, 2017.
The patent's assignee for patent number 9726698 is STMicroelectronics (Shenzhen) R&D Co. Ltd (Shenzhen, CN).
News editors obtained the following quote from the background information supplied by the inventors: "Technical Field
"The present invention relates generally to voltage sensing circuitry and, more particularly, to an integrated circuit operable to sense bidirectional variation of an input voltage and produce an output signal indicating the occurrence of said voltage variation.
"Traditional voltage sensing circuits require circuitry for sensing a first voltage variation in one direction (e.g., rising) and additional circuitry for sensing a second voltage variation in another direction (e.g., falling). The additional circuitry required to sense a voltage change reduces efficiency of the circuit and requires additional components, thereby increasing manufacturing costs. Additionally, many traditional voltage sensing circuits consider a DC component of the sensed voltage, which may otherwise be unnecessary and further reduce efficiency of the circuit. Accordingly, there exists a need for voltage sensing circuitry with improved efficiency that may be manufactured at reduced expense."
As a supplement to the background information on this patent, VerticalNews correspondents also obtained the inventor's summary information for this patent: "An integrated bidirectional voltage differentiator circuit is presented for sensing bidirectional variation of an input voltage and producing an output signal indicating the occurrence of said voltage variation. In one embodiment, the bidirectional voltage differentiator circuit comprises: first circuitry operable to sense a change in an input voltage; second circuitry operable, in response to said first circuitry sensing a first change in said input voltage, to change a state of a first logic signal and, in response to said first circuitry sensing a second change in said input voltage, to change a state of a second logic signal; and third circuitry operable, in response to a change in said first logic signal state or a change in said second logic signal state, to produce a third signal indicative of said first circuitry sensing said change in said input voltage.
"In another embodiment, the bidirectional voltage differentiator circuit comprises: a voltage differentiator circuit operable to sense and respond to a positive change in an input voltage by increasing current applied to first circuitry operable to generate a state change of a first output signal, and further operable to sense and respond to a negative change in said input voltage by decreasing said current applied to said first circuitry operable to generate a state change of a second output signal; and second circuitry operable, in response to said first and second output signals, to produce a third signal indicative of a sensed change in said input voltage.
"In yet another embodiment, the bidirectional voltage differentiator circuit comprises: a current generator circuit comprising: an input node capacitively coupled to a first circuit leg; a first internal output node coupled to said first circuit leg; and a second internal output node coupled to a second circuit leg; first pull-down circuitry having a first control node coupled to said first internal output node; second pull-down circuitry having a second control node coupled to said second internal output node; and logic circuitry coupled to said first pull-down circuitry at a first logic output node, and coupled to said second pull-down circuitry at a second logic output node.
"The foregoing and other features and advantages of the present disclosure will become further apparent from the following detailed description of the embodiments, read in conjunction with the accompanying drawings. The detailed description and drawings are merely illustrative of the disclosure, rather than limiting the scope of the invention as defined by the appended claims and equivalents thereof."
For additional information on this patent, see: Duan, Yijun. Bidirectional Voltage Differentiator Circuit. U.S. Patent Number 9726698, filed December 11, 2015, and published online on August 8, 2017. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9726698.PN.&OS=PN/9726698RS=PN/9726698
Keywords for this news article include: STMicroelectronics.
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