Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1981-04-27
1983-07-19
Masinick, Michael A.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358237, 358254, H04N 931
Patent
active
043946810
ABSTRACT:
A projection optical system is disclosed that is protractible and retractible within a narrow spatial column for emerging from and nesting in a cabinet of an ultra-compact, rear-projection television receiver. The system comprises in combination a stationary optical assembly permanently enclosed in a lower portion of the cabinet and having image projection means and first mirror means. A protractible optical assembly is elevatable as a unit from the cabinet; the assembly includes a mirror and a rear projection screen. The mirror and screen are at angles effective to reflect and receive, respectively, an aerial image of the television image formed by the image projection means of the stationary optical assembly. The angles are also effective for nesting the mirror and the screen with components of the stationary optical assembly. The optical system, when retracted and nested is overall depth-wise-shallow and the receiver is as compact as a conventional, large-screen console television receiver. When the system is protracted within the narrow spatial column the receiver remains depth-wise-shallow, yet it is capable of displaying an image with an area greater than three times the image area of the conventional, large-screen console television receiver.
REFERENCES:
patent: 2476494 (1949-07-01), Jones
patent: 2494364 (1950-01-01), Shaw
patent: 2874211 (1959-02-01), Burr
patent: 3115544 (1963-12-01), Marley
patent: 4257694 (1981-03-01), Reinhard
Masinick Michael A.
Zenith Radio Corporation
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