Electric lamp and discharge devices: systems – Cathode ray tube circuits – Plural cathode-ray tubes in the circuit
Patent
1997-08-08
1999-10-19
Westin, Edward P.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Plural cathode-ray tubes in the circuit
313 21, 313422, 313427, 315 131, H01J 2998, G09G 120, G09G 104
Patent
active
059694777
ABSTRACT:
On a rear plate of a vacuum envelope are provided a plurality of electron guns for emitting electron beams to a phosphor screen, and deflection devices for deflecting the plurality of electron beams emitted from the respective electron guns so as to dividedly scan a plurality of regions of the phosphor screen by the electron beams. Each of the deflection devices has a horizontal deflection coil and a vertical deflection coil. The horizontal deflection coils of the deflection devices are connected to one another in series, and the vertical deflection coils of the deflection devices are connected to one another in series. All the deflection devices are driven by a common deflection driving circuit which has a horizontal deflection driving circuit connected to the horizontal deflection coils and a vertical deflection driving circuit connected to the vertical deflection coils.
REFERENCES:
patent: 4777407 (1988-10-01), Takenaka et al.
patent: 5498921 (1996-03-01), Nishimura et al.
patent: 5831373 (1998-11-01), Takahashi et al.
Shizuo: "Flat CRT Designs Pose Technological Challenges, Pave Paths to New Uses", JEE Jour. of Electronic Engineering, vol. 31, Feb. 1994, pp. 106-111.
Haraguchi Yuuji
Nishimura Takashi
Gardner Shane R.
Kabushiki Kaisha Toshiba
Westin Edward P.
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