Image pickup apparatus with electronic viewfinder for synthesizi

Details Image pickup apparatus with electronic viewfinder for synthesizi Image pickup apparatus with electronic viewfinder for synthesizi

1995-09-28

1998-05-19

Boudreau, Leo

Television

Camera, system and detail

With electronic viewfinder or display monitor

348565, 348358, 348596, 348347, H04N 5222, H04N 5225, H04N 974

Patent

active

057542309

ABSTRACT:
The present invention is directed to a video camera in which a field of vision can be confirmed with ease when a cameraman takes a picture. An image signal from a zoom (variable power) lens (1) is developed at an output terminal (7). A signal from a wide angle lens (8) having a field angle which is substantially equal to or larger than the largest field angle of the variable power lens is supplied to a field memory (14). A read-out clock signal from a timing generator (15) is supplied to an address counter (16) and a read-out address thus formed thereby is supplied to the field memory (14). A signal read-out from the field memory (14) and a signal from the zoom (variable power) lens (1) are supplied to a switch (17), in which they are selectively synthesized in response to a read-out position signal from the timing generator (15). Then, a signal from the switch (17) is developed at an output terminal (19) from which an image signal is supplied to a viewfinder.

REFERENCES:
patent: 4527201 (1985-07-01), Cappels
patent: 4963981 (1990-10-01), Todaka et al.
patent: 5005083 (1991-04-01), Grage et al.
patent: 5040067 (1991-08-01), Yamazaki
patent: 5043802 (1991-08-01), Tarumizu et al.
patent: 5144445 (1992-09-01), Higashitsutsumi
patent: 5161025 (1992-11-01), Nakao
patent: 5187582 (1993-02-01), Higashitsutsumi
patent: 5212598 (1993-05-01), Kikuchi

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