Abstract: A network information transmission method, comprising the following steps: receiving a first media information by a first terminal device; processing the first media information to obtain a processed first media information; integrating the processed first media information into a second media information to generate an integrated second media information; outputting the integrated second media information to a second terminal device through the network; decompressing the integrated second media information through the second terminal device; capturing the integrated second media information through the second terminal device; obtaining the first media information based on the integrated second media information; and playing the first media information by the second terminal device.

Abstract: A network information transmission method, comprising the following steps: receiving a first media information by a first terminal device; processing the first media information to obtain a processed first media information; integrating the processed first media information into a second media information to generate an integrated second media information; outputting the integrated second media information to a second terminal device through the network; decompressing the integrated second media information through the second terminal device; capturing the integrated second media information through the second terminal device; obtaining the first media information based on the integrated second media information; and playing the first media information by the second terminal device.

Abstract: In a signal pickup method of a video/audio recording and playing system, a recording length and a tracing-back length are preset. An external signal is received and storing into a buffer of the video/audio recording and playing system. A designated section of the external signal is automatically picked up from the buffer according to the recording length and the tracing-back length in response to a triggering operation of a user.

Abstract: A projecting device capable of synchronously encoding images and sounds into an AV play file includes a receiving unit, a first processing unit, a projecting unit, a sound-recording unit, a second processing unit and an AV encoding unit. The receiving unit receives and outputs a first video signal. The first processing unit receives the first video signal to output a second video signal. The projecting unit receives the second video signal and projects a corresponding image onto a wall. The sound-recording unit records sounds of a user as explaining the image and outputs a first audio signal accordingly. The second processing unit receives the first audio signal to output a second audio signal. The AV encoding unit receives and synchronously encodes the second video signal and the second audio signal into an AV synchronous play file.

Abstract: A document positioning apparatus has a supporter. The supporter is disposed under a base of a document camera. A gap is formed between the supporter and a ground surface used to support the supporter and the gap is designed to be large enough for a document to shift. The document positioning apparatus further has a document guider, formed on an edge of the supporter to guide the document into the gap under the supporter easily.

Abstract: Apparatus for generating at least a selected area in a picture is disclosed herein. The picture and the selected area are displayed on a video display means, and the user can optionally adjust the position and size of the selected area. The apparatus including the following devices. A first converting device that is used to generate a digital signal and a pointer defining signal according to a computer video signal. The picture is transferred from the computer video signal, and the selected area is defined in the pointer defining signal. A first adapting device that is utilized to adapt the format of the computer video signal to suit a digital display format corresponding to the pointer defining signal. A storage device determines said display timing of all the pixels of the picture. A pointer generating device generates a plurality of edge of the selected area according to the pointer defining signal.