Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1989-09-11
1991-10-15
Oberley, Alvin E.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340747, 324121R, G09G 100
Patent
active
050578260
ABSTRACT:
A digital picture display device in which, due to a location-dependent, determined brightness drive of pixels in a picture formed line and field-sequentially, it is possible to obtain an oscilloscopic image in the form of a waveform profile on a display screen (TV, OSC). A digital signal comparison circuit (COMP) having a first input (I1) for receiving location information in the form of an actual line number (L-act) and a second input (I2) for receiving from a line buffer circuit (W-buf) digital values of the waveform profile to be displayed. The signal comparison circuit produces a binary drive signal (BDS) at its output. The line buffer circuit (W-buf) is filled from a digital picture source (DPS) via a series arrangement of another line buffer circuit (L-buf) for storing the picture information associated with a selected line having a selectable first line number (L-sel), a multiplier or divider circuit (SCAL) for obtaining picture line strips made up of different numbers of picture lines via selectable factors (W-fac) for displaying the waveform profile on different scales, and a subtractor circuit (SUB) for moving the bottom line of the picture line display strips having the different heights by means of a selectable second line number (L-bot). The digital picture display device provides an accurate location of the movable waveform profile which can be observed on a desired scale.
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Soethout Adrianus
Verdult Marinus J. G.
Franzblau Bernard
Hjerpe Richard
Oberley Alvin E.
U.S. Philips Corporation
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