| 摘要 |
PURPOSE: A wireless CCTV system transmitting additional information together with voice and video is provided to transmit additional information together with voice and video. According to intensity of signal inputted to a sensor of a transmitting part, output received in remote place varies. In other words, a wireless CCTV transmitting part transmits value sensed by the sensor. A remote supervisor generates different alarms according to magnitude of the value. CONSTITUTION: The wireless CCTV system transmitting additional information together with voice and video comprises a wireless CCTV transmitting part and a wireless CCTV receiving part. The wireless CCTV transmitting part includes a wireless transmitting part(208). The wireless transmitting part(208) combines output of a low frequency signal modulating part(203) and video signal. The low frequency signal modulating part(203) modulates voice signal and sensor signal inputted from a mike(201) and a sensor(202) to sub-carrier. Image signals inputted through a CCD camera(206) are output by a CCD camera main body(207) as the video signal. The wireless transmitting part(208) changes the combined signal by a frequency generator(209) and transmits the transformed signal wirelessly through a transmitting antenna(210). The low frequency signal modulating part(203) comprises a low frequency signal modulating part(204) and a sensor modulating part(205). The low frequency signal modulating part(204) modulates voice signal inputted into the mike(201) into AM or FM. The sensor modulating part(205) modulates signals inputted into the sensor(201) to AM or FM.
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