JIMI Electronic

There are several key differences between DVRs and VCRs that result in significant advantages for DVR users. The most notable difference between the DVR and VCR is the medium used for recording the video images. VCRs record images on magnetic tapes, while digital systems use HD drives, DATs or DVDs. This differentiation has significant implications in terms of the video image quality, speed of information retrieval, image transmission speed, and remote monitoring capabilities. Digital video systems using DVRs can be accessed over LAN, intranets, and the Internet. This permits security personnel to monitor remote sites across the street, town, or locations hundreds or thousands miles away. Using an Internet browser or other application software on any PC or laptop allows security with personnel or corporate management to view recorded digital video images at a secure IP (Internet protocol) address from anywhere in the world. Security systems using  Smart DVR  can play a ...

NRL collects the GPS data along with the laser tracking data for inter comparison studies. Tracking data from the GPS Control Segment stations, USNO, the broadcast position data and DMA precise ephemerides are collected. These are continuous data over the in~rbit operation of the satellites. To utilize the GPS derived tracking data for inter comparison with the laser derived data, the local clocks at the GPS Monitor Station sites must be accounted for since they are the basis for the GPS tracking measurements. In GPS itself these clocks are accounted for by the use of GPS Time which is a common synchronization time computed at the MCS. However, the GPS ranging measurements are directly related to the local clocks whose performance must be removed if the satellite clock is to be isolated from the satellite orbital position and evaluated. The laser data is independent of this influence on ranging measurements since the local clock is used for time tagging. To determine the performan...

With the development of navigation systems, the demand for map data has grown massively. Cars with a large number of sensors and 360 degree photographic - or even laser-capturing capabilities, drive around cities to digitize the world. Accordingly, existing markets have to adapt to this new technology. In the real-estate business, data is collected for every building: photographs, ground plans, etc. Something on the order of a million in-car GPS navigation systems are being installed each year (  rear-view mirror car dvr camera ,  rearview mirror navigation  ). Not only do these systems allow navigation based on the static facts of where the roads go but also on the dynamic facts relating to where the other traffic is. Tokyo will soon benefit from such a system. In addition to vehicle route guidance, intelligent transportation systems (ITS) will provide other benefits, such as fleet vehicle dispatch and tracking, and emergency notification of police and tow trucks. Befor...

Information collection is a new traffic flow information collection technology developed with ITS. To ensure the operation safety and scheduling efficiency of the floating cars, GPS devices are equipped. These devices send the status information of the vehicles to the management centre as certain frequency. This information records into log files, which contain the trajectories of the vehicles. Through vehicle trajectory analysis, not only improve the scheduling efficiency of the taxi dispatch system, but also provide road traffic conditions for the relevant departments, give them the decision support of traffic control. The obtaining of real-time traffic information has become an important part of the Intelligent Transportation Systems (ITS). With the key technologies development of ITS, it’s possible to offer real-time, dynamic and predicted traffic information for travellers by information collection, processing and analysis. The major difference between one GPS device and another ...