Patents Examined by Aristotelis Psilos
  • Reproducing circuit having common base amplifier, low-pass filter and peak detector for use with magnetoresistive head
    Patent number: 5416645
    Abstract: A magnetoresistive element of a magnetoresistive head is connected to the emitter of a first-stage transistor which serves as a common base amplifier. A base current supplied to the base of the first-stage transistor is adjusted to equalize a sensing current to an emitter current. A reproducing circuit of such an arrangement requires no sensing current source and no DC blocking capacitor.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: May 16, 1995
    Assignee: Sony Corporation
    Inventor: Munekatsu Fukuyama
  • Video processing system
    Patent number: 5384667
    Abstract: A video processing system comprises a processing unit, a VDU, and a look-up table. A user defined profile is displayable on the VDU and can be adjusted interactively by way of a stylus and touch tablet. Data representing the profile is stored in the look-up table. An input video clip is stored in digital form in a disc store and output video clip frames are generated in accordance with the user defined profile data. The system can be used for example to stretch or compress a video clip in time.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: January 24, 1995
    Assignee: Quantel Limited
    Inventor: Timothy Beckwith