公开(公告)号：FR2472801A1

公开(公告)日：1981-07-03

申请号：FR8027538

申请日：1980-12-24

Applicant: RCA CORP

Inventor： GANGE ROBERT ALLEN

IPC: H01J29/46 ,  H01J31/12 ,  G09G1/12

公开(公告)号：IT8026248D0

公开(公告)日：1980-11-26

申请号：IT2624880

申请日：1980-11-26

Applicant: RCA CORP

Inventor： GANGE ROBERT ALLEN

IPC: H01J29/46 ,  H01J31/12 ,  H04N

公开(公告)号：DE2819195A1

公开(公告)日：1978-11-09

申请号：DE2819195

申请日：1978-05-02

Applicant: RCA CORP

Inventor： GANGE ROBERT ALLEN

IPC: H01J31/12 ,  G09G1/20 ,  H01J1/13 ,  H01J29/04 ,  H04N5/68

Abstract: A series of discrete heating current pulses are passed through a line cathode so as to cause the cathode to emit electrons therefrom. Between each consecutive pair of pulses is a cooling period during which no heating current flows through the cathode. Current is extracted from the cathode during this cooling period. In a preferred embodiment for an image display device, the heating pulse duration is about 10 mu sec and the cooling period is about 50 mu sec. In this scheme, the heating period corresponds roughly to the horizontal retrace time between line times of 50 mu sec.

公开(公告)号：DE2715242A1

公开(公告)日：1977-10-13

申请号：DE2715242

申请日：1977-04-05

Applicant: RCA CORP

Inventor： GANGE ROBERT ALLEN

IPC: H01J9/04

Abstract: A line electron filament is provided which is cylindrically shaped and substantially uniform in cross section about its longitudinal axis. The filament can be of the type known as directly heated or of the type known as indirectly heated. The uniformity of the filament is obtained through cataphoretic deposition in a rotating cylindrical tube. The filament is useful as a cathode in a display which employs space charge limited emission operation.