中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

12 records (took 0.013 seconds)

    Electromechanical monolithic resonator
    1.
    发明授权
    Electromechanical monolithic resonator 失效
    电子单相谐振器

    公开(公告)号：US3614677A

    公开(公告)日：1971-10-19

    申请号：US3614677D

    申请日：1966-04-29

    Applicant: IBM

    Inventor： WILFINGER RAYMOND J

    IPC: H01L27/00 ,  H01L27/20 ,  H01L29/00 ,  H03H9/24 ,  H03H9/46 ,  H03H9/04

    CPC classification number: H03H9/46 ,  H01L27/00 ,  H01L27/20 ,  H01L29/00 ,  H03H9/24

    Abstract: A semiconductor substrate is supported so as to allow mechanical vibration of the substrate. This semiconductor substrate is of a size and has such electrical and mechanical characteristics as to be capable of sustaining mechanical stress and producing a useable resonance frequency. An excitation element is formed in the substrate at a suitable location to cause mechanical strain in the semiconductor substrate by a thermal expansion mechanism. The further addition of a device formed in the semiconductor substrate for converting mechanical stresses in the semiconductor substrate into electrical phenomena makes the semiconductor device of even greater value.

    4.
    发明专利
    未知

    公开(公告)号：FR2398352A1

    公开(公告)日：1979-02-16

    申请号：FR7819404

    申请日：1978-06-20

    Applicant: IBM

    Inventor： LEIGHTON HOWARD N ,  SIVERLING MICHAEL M ,  WILFINGER RAYMOND J

    IPC: G06K9/38 ,  G06K9/00

    Abstract: An array of optically sensitive devices senses printed matter with each device in the array producing an output signal representing a single black or white element in a multi-element picture being sensed by the whole array. These output signals are fed into an analog charge transfer shift register and passed serially in a fixed sequence through an output stage of the shift register. As the signal from each device passes through this output stage the device becomes what is hereafter referred to as the device of interest and the signal produced by it is analyzed to determine whether it is a black or white element. Other output stages simultaneously sense data from devices located around the device of interest to define a subarray within the original detected array while the last of these output stages is fed to a peak comparator to sense the brightest and darkest matter detected in the recent past by any element of the array. The results of these sensings are processed in accordance with a preselected algorithm to generate a digital signal wich is an indication of whether the device of interest has detected black or white.

    8.
    发明专利
    未知

    公开(公告)号：FR2414830A1

    公开(公告)日：1979-08-10

    申请号：FR7836583

    申请日：1978-12-20

    Applicant: IBM

    Inventor： DUBIL JAMES F ,  FALCOZ ALAIN M ,  GLAISE RENE J ,  JACQUART CHRISTIAN A ,  LEIGHTON HOWARD N ,  RISO VLADIMIR ,  WILFINGER RAYMOND J

    IPC: H03H15/02 ,  H03K

    Abstract: This specification describes a charge-transfer device transversal filter chip in which an input signal is fed in parallel into a number of channels the outputs of which are summed together to provide the desired transversal filter transfer function. Each channel contains an analog shift register, a signal splitter and a polarity selector. The shift registers are of unequal length to provide a different delay thru each channel. The signal splitter provides a plurality of signal paths thru each channel while the polarity selector determines whether a given path in a given channel is added or subtracted in the summation to determine the gain of the given channel in the summation.

    9.
    发明专利
    未知

    公开(公告)号：FR2410850A1

    公开(公告)日：1979-06-29

    申请号：FR7830415

    申请日：1978-10-19

    Applicant: IBM

    Inventor： BURKE MICHAEL J ,  SIVERLING MICHAEL M ,  WILFINGER RAYMOND J

    IPC: G06K9/38 ,  H04N1/407 ,  G06G9/00

    Abstract: Analog voltage levels derived from optically scanning a document or from magnetically scanning a magnetic record, depend upon the variable amplitude of a background signal. The analog voltage levels are processed by a bucket brigade circuit to set a threshold from which a binary decision may be made as to the presence of a black or white indicium in optical recognition or a one (1) or zero (0) bit in magnetic reading.

Patent Agency Ranking