| 摘要 |
A two-way wireless personal video/audio communication system comprises a microprocessor unit for controlling the overall operation of the system. Audio and video transmission/reception circuits are responsive to audio and video channel control signals and audio and video transmission control signals from the microprocessor unit, for adjusting audio and video transmission/reception channel frequencies and driving audio and video power amplifiers, respectively. A video path control circuit acts to transfer a video signal from a camera circuit to a display circuit in an N mode, a video signal from a remote terminal, received through the video transmission/reception circuit, to the display circuit in an R mode and the video signal from the camera circuit to both the display circuit and video transmission/reception circuit in an X mode. When a video freeze switch is turned on, the video path control circuit blocks a moving image from the camera circuit and receives a freeze image from a video memory control circuit. When the video freeze switch is turned on in the X mode, the video memory control circuit captures the video signal from the camera circuit in an instant, stores the captured video signal as the freeze image in a video memory and outputs the stored freeze image to the video path control circuit.
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