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AssigneeSony Corporation
InventorKinya Shinkai
Estimating the term…
A television receiver in which a plurality of picture-displaying fluorescent lines (3), which are disposed on a screen (2) as the display surface of a cathode ray-tube so as to extend in the horizontal direction (in the direction of the arrow X) as the beam main-scanning direction, and in the vertical direction (in the direction of the arrow Y) as the beam sub-scanning direction, and a single electron beam is arranged to scan across the screen (2) to display a picture. The television receiver has two kinds of beam detection stripes (5A), (5B) disposed in each respective guard band portion between adjacent fluorescent lines (3) so as to be parallel to the fluorescent lines (3). On the basis of beam detection signals independently taken from the beam detection stripes (5A), (5B) in correspondence to beam spots (S) of the electron beam on the screen (2), the vertical positions (in the direction of the arrow Y) of the electron beam spots (S) with respect to the fluorescent lines (3) are controlled. For the beam detection stripes, it is possible to employ index fluorescent stripes employing two kinds of fluorescent substances or a pair of comb electrodes.
A television receiver characterized in that a plurality of image-displaying fluorescent lines are disposed on a display surface of a cathode ray tube so as to extend along a main-scanning direction of an electron beam, said lines are disposed in a side-by-side relationship in a sub-scanning direction normal to said main-scanning direction, first and second beam detection stripes are alternately arranged on guard band portions that are disposed parallel to and between adjacent ones of said fluorescent lines, said first and second beam detection stripes being so adapted that corresponding first and second beam detection signals can be respectively obtained from said stripes, and in that the position of the electron beam relative to said fluorescent lines is compensated on the basis of said first and second beam detection signals obtained respectively from said first and second beam detection stripes and in that said beam detection stripes are extended outwardly to a beam run-in area of a raster area of said display surface and include color identifying means extending in said sub-scanning direction added to said beam detection stripe portions disposed in said run-in area.
A television receiver of the beam index type comprising:
Dependencies are inferred from the claim text.