-
公开(公告)号:US06369849B1
公开(公告)日:2002-04-09
申请号:US09240021
申请日:1999-01-28
申请人: Gene Rzyski
发明人: Gene Rzyski
IPC分类号: H04N718
CPC分类号: G02B23/08 , H04N5/2259 , H04N5/33 , H04N2005/2255
摘要: A remote inspection device is provided which is ideally suited for law enforcement and firefighting personnel. The remote inspection device includes an elongate housing, camera means and power supply for powering the camera means and video display. The camera means operates in the invisible light spectrum, preferably the infrared (IR) spectrum. The camera means creates an image of an object which is transmitted to the video display for producing a visible light image of the object to be evaluated.
摘要翻译: 提供远程检测装置,非常适合执法人员和消防人员。 远程检查装置包括细长壳体,相机装置和用于为摄像机装置和视频显示器供电的电源。 相机装置在不可见的光谱中操作,优选红外(IR)光谱。 相机装置创建被发送到视频显示器的对象的图像,以产生待评估对象的可见光图像。
-
公开(公告)号:US5268688A
公开(公告)日:1993-12-07
申请号:US882212
申请日:1992-05-13
CPC分类号: H03M1/661
摘要: Linear signal reconstruction systems and methods that use mathematical relationships that exist between discrete time signals, digital to analog conversion characteristics and digital signal processing to produce a highly accurate, low noise, arbitrary analog signal from a discrete digital representation. This analog signal is produced by connecting discrete digital voltages through the use of a segmented straight line curve fit. This approach significantly reduces out of band harmonics that are normally associated with the stair-step approach while improving the output signal amplitude and phase accuracy. More specifically, the present system and method provides for reconstructing original analog signals from a digitized representation thereof. Digitized signals corresponding to the original analog signals are differentiated and then D to A converted into differentiated analog signals. The differentiated analog signals are then integrated to provide for reconstructed analog signals that correspond to the original analog signals.
-
公开(公告)号:US5608331A
公开(公告)日:1997-03-04
申请号:US471812
申请日:1995-06-06
CPC分类号: G01R29/26
摘要: A noise measurement test system 10' for making phase noise and amplitude noise measurements of microwave signals derived from a continuous wave RF source. The system 10' comprises an RF input for receiving an applied RF noise signal and an RF coupler 11 coupled to the RF input for splitting the applied RF noise signal into first and second paths 18a, 18b. A mixer 15 that comprises a synchronous phase detector 15 is coupled to receive signals from the first and second paths 18a, 18b, respectively, and which outputs demodulated phase noise. The first path 18a comprises a variable attenuator 14 and a variable phase shifter 13 coupled between the coupler 11 and the first input of the mixer 15 for providing a reference signal input to the synchronous detector 15. The second path 18b comprises a delay line and an adjustable RF carrier nulling circuit 30 coupled between the coupler 11 and the mixer 15. A video amplifier is coupled to an output of the mixer 15 for providing a baseband video output signal from the system 10' that is processed to produce noise data.
摘要翻译: 一种用于对从连续波RF源得到的微波信号进行相位噪声和振幅噪声测量的噪声测量测试系统10'。 系统10'包括用于接收施加的RF噪声信号的RF输入和耦合到RF输入的RF耦合器11,用于将所施加的RF噪声信号分离成第一和第二路径18a,18b。 包括同步相位检测器15的混频器15分别被耦合以从第一和第二路径18a,18b接收信号,并输出解调的相位噪声。 第一路径18a包括可变衰减器14和耦合在耦合器11和混频器15的第一输入端之间的可变移相器13,用于提供输入到同步检测器15的参考信号。第二路径18b包括延迟线和 耦合在耦合器11和混频器15之间的可调整的RF载波零位电路30.视频放大器耦合到混频器15的输出,用于提供来自系统10'的基带视频输出信号,该基带视频输出信号被处理以产生噪声数据。
-
-