Lg Electronics Inc.

Goldstar, Co., Ltd.

Joong I Shin

Sang Jig Lee

Nam Su Lee

Myung K Yeo

A light amount controlling apparatus includes a light source for producing light and a light source driver for driving the light source. A zoom lens unit includes a zoom lens for varying an angle of projection of the light, and a zoom lens position detector detects a position of the zoom lens. A memory stores control data corresponding to the position of the zoom lens and a memory controller reads the control data from the memory according to a detected value of the zoom lens position of the zoom lens position detector. A controller controls the light source driver to vary an amount of light projected from the light source in accordance with the control data output from the memory controller.

Light amount controlling apparatus and method for projector

A liquid crystal projector for projecting an image on a screen includes a liquid crystal display (LCD) for displaying an image, a light source positioned behind the LCD for supplying light to project the image displayed on the LCD, a projection lens positioned in front of the LCD for focusing the light projected from the LCD onto the screen, and deflection means positioned between the LCD and the screen for deflecting the light focused through the projection lens to move the image position on the screen.

Liquid crystal projector

Recording and playback systems for a VCR. The VCR recording system comprises first and second signal input circuits for inputting first and second channel signals and detecting video and audio signals from the first and second channel signals, respectively, a video signal processing circuit for inputting, in turn, the video signals from the input circuits in the unit of one field per one frame and processing the inputted video signals to be recordable, an audio signal processing circuit, and a recording mechanism for recording the first and second channel audio and video signals on a VCR tape, respectively. The VCR playback system comprises a playback mechanism for playing back first and second channel video signals recorded, in turn, in the unit of one field per one frame, on a VCR tape and for playing back first and second channel audio signals recorded, respectively, on the VCR tape, respectively, a video signal processing circuit for processing one of the video signals of the first and second channels from the playback mechanism to be displayable, an audio signal processing circuit, a video signal correcting circuit for correcting the video signal from the video processing circuit to compensate for a portion of the video signal omitted in the unit of one field per one frame.

Growing community of inventors

Kyungki-do, South Korea

Joong I Shin