JIMI Electronic

Linking Mini GPS Trackers, Maps, and Coordinate Systems Some people think that after they have a  GPS Tracking Device , they really don’t need a map, especially if the receiver has built-in mapping capabilities. This isn’t necessarily true. GPS receivers are best used in conjunction with maps, whether those maps are paper or digital. Here are some of the reasons why: Detail : Most maps on handheld GPS receivers don’t offer the detail of  full-size paper or digital maps, especially topographic maps and nautical  charts. Size : A GPS receiver’s screen is pretty darn small, and it’s just about  impossible to get the big picture that a full-size map can give you. Backup : If you have a paper map with you and know how to use it, the  map becomes an important backup if your GPS receiver’s batteries fail  or if you encounter poor satellite coverage. Gadget lovers might consider a paper map and magnetic compasses primitive, but they don’t  require bat...

Wireless IP Camera , Lens Most video-dome systems use high sensitivity color cameras that can be operated in: (1) color (2) monochrome (3) switch-over from color to monochrome automatically. The CCD cameras have an image format of 1/6 or 1/4 inch. These smaller sensor formats allow for a compact zoom lens and permit the small compact design that results in high pan/tilt speeds. Overall camera resolution is typically 480 TV lines for color and 570 TV lines for monochrome. Values of 1 lux sensitivity for color and 0.06 lux or less for monochrome are typical. Switchover from color to monochrome is automatic when the light level falls below a predetermined level. Cameras are also provided with DSP and automatic brightness control (ABC) so that the camera can view scenes containing both bright and dark areas. To capture image detail in both light and dark regions, Panasonic Inc. uses the Super Dynamic SDII technology, which records the scene at two different exposures and then electron...

There are many video devices and features that can significantly enhance the effectiveness of a  Wireless Security Camera System . These include: electronic image-splitting and compression, data annotation, picture-in-a-picture, and video scan-reversal. An electronic image-splitting device is interposed in between the camera and the monitor, VCR, DVR, or video printer. It combines parts of the scenes of two or more cameras and displays them on one monitor. The use of the image splitter increases security in several ways. (1) decreases the number of monitors (2) permits the guard to view a monitor with two or three scenes on it rather than one (3) reduces the number of recorders  required by combining several scenes onto one video signal. Image splitters do not display the entire video scene from the cameras on the screen. They only display part of each camera scene: 1/2 of the scene if it is a 2-way split, 1/3 if 3-way split, and 1/4 if 4-way split.  It is often adva...