Abstract: An eyewear type viewer having left and right LCD panels for the left and right eyes is arranged so that both LCD panels are driven and controlled by a single LCD drive circuit and a single timing control circuit, to reduce the weight and cost of the viewer. The timing control circuit controls the timings of the left and right LCD panels synchronously by sending a common timing control signal to both of the left and right panels, or controls the left and right panels individually by producing a first timing control signal for the left panel and a second timing control signal for the right panel. The timing control circuit may include a comparator which receives a composite control signal composed of a first component representing a write/hold signal, and a second component representing a quasi vertical synchronizing signal, and which separates the write/hold signal from the quasi vertical synchronizing signal.

Abstract: A head-mounted image display apparatus may be worn in a fashion similar to eyeglasses and is provided with left and right shutoff switches operable so that, when the left shutoff switch is operated, a left LCD is active to display a black surface image and a right LCD displays a test pattern, and vice versa. A user may thus easily effect focus and width adjustment without external input and without having to keep one eye closed during adjustment. Also provided are audio earphones and a detection circuit for detecting input of a three dimensional image signal. Also, a surround audio processing circuit is provided which is active according input of the three dimensional image signal.

Abstract: An automatic image regulating arrangement for a head-mounted image display device includes a sensor for detected conditions, such as outside ambient light, or vibration, applied to display elements of the display device and a regulating portion to control display of the images so as to compensate for conditions detected by the sensor so as to maintain good image visibility in various viewing environments.

Abstract: A photovideo camera takes visual images formed on negative films and/or positive films to obtain video signals corresponding to the visual images. The camera unit of the photovideo camera can be focused after determining a desired angle of view by zooming, without changing the desired angle of view. In focusing the lens unit, only the master lens of the focusing lens system of the lens unit is moved.

Abstract: A photo video camera device for photographing a visible image on a negative film and/or a positive film developed. The photo video camera device includes a lens barrel, a solid-state image pickup device fixed to the lens barrel, a rotating mechanism for rotating the lens barrel with the solid-state image pickup device, and a supporting member for supporting the lens barrel with the solid-state image pickup device so that the lens barrel and the solid-state image pickup device are rotatable together relative to the supporting member by the rotating mechanism. Accordingly, there occurs no misalignment of axes between a lens system retained in the lens barrel and the solid-state image pickup device, and no dust or the like sticks to the lens system and the solid-state image pickup device.