中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

18 records (took 0.025 seconds)

    16.
    发明专利
    未知

    公开(公告)号：IT1149831B

    公开(公告)日：1986-12-10

    申请号：IT2131880

    申请日：1980-04-11

    Applicant: IBM

    Inventor： THOMPSON DAVID ALLEN ,  WORTHINGTON THOMAS KIMBER

    IPC: G01D5/48 ,  G06F3/02 ,  G06F3/033 ,  G06F3/043 ,  H03M

    Abstract: A magnetoacoustic system adapted to use as a keyboard can employ a serpentine acoustic delay line passing under a number of transducers which are activated simultaneously with a current pulse through the wire. Magnets adjacent to the wire generate magnetoacoustic pulses along the wire which arrive sequentially at a sensor at one end of the line. For each key on a keyboard at least two magnets are associated with each key position with one magnet affixed in position and one reciprocably movable towards and away from the wire in a response to actuation of the key. The magnet which remains close to the wire is used to provide a "location" signal indicating the location along the delay line provided by the wire by producing an acoustic pulse for that point on the wire for each clock pulse of current which passes through the wire. The second magnet located adjacent to the first magnet generates a pulse simultaneously with the other magnets when the current pulse passes through the wire, but it is delayed by the physical displacement along the wire, so it is received at a different time than the pulse from the other magnet. The data pulse can follow or precede the location pulse so long as the presence of one or both can be readily decoded. A three magnet key arrangement can be employed where it is desired to be able to use three positions per key.

    DATA INPUT PEN FOR SIGNATURE VERIFICATION
    17.
    发明专利
    DATA INPUT PEN FOR SIGNATURE VERIFICATION 未知

    公开(公告)号：DE3367293D1

    公开(公告)日：1986-12-04

    申请号：DE3367293

    申请日：1983-05-19

    Applicant: IBM

    Inventor： CHAINER TIMOTHY JOSEPH ,  SCRANTON ROBERT ALAN ,  WORTHINGTON THOMAS KIMBER

    IPC: G06F3/041 ,  B43K8/22 ,  G06F3/033 ,  G06K9/00 ,  G06K9/24 ,  G07C9/00 ,  G06F3/03 ,  G06K11/06

    Abstract: A pen (10) has a conductive casing (12) with an ink writing tip (21). The tip (21) is detachably mounted on the movable end of a piezoelectric tube (26), which has an opposite end (27) fixed to a mounting in the casing (12), so that the tube is mounted in cantilever fashion. The tube (26) has inner and outer tubular electrodes between which an electric signal is generated according to the pressure on the tip during pen use. A second piezoelectric tube (24), also mounted in cantilever fashion so as to have a movable end (25) and a fixed end (23), is located behind the tip and has a different arrangement of five electrodes for providing x, y signals according to the transverse accelerations of the pen during use. The pressure and accelerometer signals are electrically processed by electronic circuitry (22) before leaving the pen on cable (8).

    DATA RECORDING AND CODING KEYBOARD DEVICE
    18.
    发明专利
    DATA RECORDING AND CODING KEYBOARD DEVICE 未知

    公开(公告)号：DE3061580D1

    公开(公告)日：1983-02-17

    申请号：DE3061580

    申请日：1980-04-10

    Applicant: IBM

    Inventor： THOMPSON DAVID ALLEN ,  WORTHINGTON THOMAS KIMBER

    IPC: G01D5/48 ,  G06F3/02 ,  G06F3/033 ,  G06F3/043

    Abstract: A magnetoacoustic system adapted to use as a keyboard can employ a serpentine acoustic delay line passing under a number of transducers which are activated simultaneously with a current pulse through the wire. Magnets adjacent to the wire generate magnetoacoustic pulses along the wire which arrive sequentially at a sensor at one end of the line. For each key on a keyboard at least two magnets are associated with each key position with one magnet affixed in position and one reciprocably movable towards and away from the wire in a response to actuation of the key. The magnet which remains close to the wire is used to provide a "location" signal indicating the location along the delay line provided by the wire by producing an acoustic pulse for that point on the wire for each clock pulse of current which passes through the wire. The second magnet located adjacent to the first magnet generates a pulse simultaneously with the other magnets when the current pulse passes through the wire, but it is delayed by the physical displacement along the wire, so it is received at a different time than the pulse from the other magnet. The data pulse can follow or precede the location pulse so long as the presence of one or both can be readily decoded. A three magnet key arrangement can be employed where it is desired to be able to use three positions per key.

Patent Agency Ranking