Abstract Closed circuit TV indicates the alignment position of a coil lifter on a remotely controlled subway car with the vertical center of a coil of metal strip located randomly along skids on a floor above the car. Two vidicon TV cameras, one modified for opposite-hand horizontal scanning, are attached to a remotely controlled azimuthal aiming mount and imaged from opposite side of an aiming axis which extends perpendicular to car movement. This produces two opposite-hand video signals of adjacent views of the same field. The video signals are continuously mixed and fed to a TV monitor where full opposite-hand images are observed in superposed relationship. Two horizontally displaced images of the coil, or an illuminated target carried by the subway car at the lifter, converge toward one another during movement of the aiming mount or the car, whereby said alignment is indicated by maximum convergence of their TV images.
Inventors
👤 Leonard E Green
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-28 06:03
CPC Classifications
G; G01; G01S; G01S5/00; G01S5/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
123 words
Television position indicating apparatus comprising: a. television camera means imaged from opposite sides of an aiming axis for producing first and second video signals representing adjacent views of the same field; b. camera scanning meaNs having synchronized deflection circuitry modified for opposite hand horizontal scanning during the production of the first and second video signals, respectively; c. means for mixing the first and second video signals and producing a combined video output signal; and d. monitoring means receiving the combined video output signal for observing complete opposite hand images of the field in superimposed relation, whereby a field object displaced laterally relative the aiming axis appears as two horizontally displaced full objects which converge toward one full object as said lateral displacement diminishes.
Claim 2
Dependent Claim
123 words
Television position indicating apparatus comprising: a. television camera means imaged from opposite sides of an aiming axis for producing first and second video signals representing adjacent views of the same field; b. camera scanning meaNs having synchronized deflection circuitry modified for opposite hand horizontal scanning during the production of the first and second video signals, respectively; c. means for mixing the first and second video signals and producing a combined video output signal; and d. monitoring means receiving the combined video output signal for observing complete opposite hand images of the field in superimposed relation, whereby a field object displaced laterally relative the aiming axis appears as two horizontally displaced full objects which converge toward one full object as said lateral displacement diminishes.
Claim 3
Dependent Claim
51 words
The television apparatus of claim 1 wherein: e. means (a) consists of a pair of television cameras fixedly disposed on opposite sides of the aiming axis and aimed inwardly at a distant object; and f. means (b) includes separate horizontal deflection circuitry for simultaneous scanning of each camera horizontally in opposition.
Claim 4
Dependent Claim
22 words
The television apparatus of claim 1 including: g. means for rotating means (a) about a vertical axis extending through the aiming axis.