BIDIRECTIONAL DIGITAL INFORMATION DISPLAY APPARATUS AND DRIVING METHOD THEREOF

摘要

The present invention relates to a bidirectional DID (Digital Information Display) apparatus and a driving method thereof. The bidirectional DID apparatus is able to record and modify voice and video image, and comprises: a message input unit for recording, modifying or inputting voice and video image; a central control unit for controlling bidirectional DID and input/output of the voice and video image; a memory unit for encoding and storing inputted voice and video image and transmitting the stored information according to a request from the central control unit; a display unit for outputting transmitted voice and video image; and a power supply unit for supplying electric power to drive the bidirectional DID. The message input unit includes: a microphone for inputting a user's voice; a camera for recording a user's video image and inputting the recorded video; a receiver for inputting a premade advertisement; a controller for modifying the user's voice, video image and the advertisement, and presetting conditions of the message input unit; and an A/D (Analog-Digital) converter for converting an analog signal into a digital signal when the user's voice, video image and the advertisement are in an analog signal. The memory unit further includes a filter that links the modified voice and video image to the entire voice and video image if some portions thereof are stored after being modified.