JPH0339977U - - Google Patents

Description

[Brief explanation of drawings]

1 to 3 relate to a first embodiment of the present invention, in which FIG. 1 is a schematic external view of a video camera with an electric zoom function, and FIG. 2 is a block diagram showing a circuit configuration related to the electric zoom function. 3 are waveform diagrams for explaining the operation. FIG. 4 is a waveform diagram illustrating the operation according to the second embodiment. 5 and 6 relate to a conventional example, with FIG. 5 being a schematic external view of a video camera, and FIG. 6 being a block diagram showing a circuit related to the electric zoom function. 2...Zoom lens, 4...Zoom motor, 5...Wide-angle direction switch, 6...Telephoto direction switch, 7...Zoom switch, 8...Zoom direction designation circuit, 9...Zoom motor drive circuit, 10...Microphone, 13...Audio detection circuit , 14...Voice responsive control circuit, 15...Small shift operation switch.

Claims (1)

[Claims for Utility Model Registration] Electric zoom equipped with a zoom direction designation circuit that specifies the direction of current supplied to the zoom motor to either the wide-angle direction or the telephoto direction depending on whether the operated zoom switch is a wide-angle direction switch or a telephoto direction switch. A video camera with a function includes an audio detection circuit that outputs an audio detection signal when the audio signal input from the microphone is at a predetermined level or higher, and a wide-angle direction specification and telephoto control when the audio detection signal from this audio detection circuit is input. a voice-sensitive control circuit that gives a small-step reciprocating shift command that alternately repeats direction specification to the zoom direction designation circuit; and a small-step shift operation switch inserted between the voice-sensitive control circuit and the zoom direction designation circuit. A video camera with an electric zoom function.