On-board television system TELAN includes one or several monitors with fragmented screen space (for example with liquid crystals), three and more small-sized video cameras (color and/or monochrome), adaptive means of their switching and, possibly, means of video recording. The means of adaptive switching provide automatic lead-out to the screen of the monitor of information, optimum for current transport situation. Advantages of such television system are:
(1) practically circular review, i.e. absence of "blind/dead" zones;
(2) substantial increase of safety of driving, as it allows to boost the rate of the proper response of driver in pre-emergency and other critical situations; (3) effective protection against blinding by headlights of the going behind and/or overtaking automobile; (4) high quality of the image even under bad conditions of supervision (for example in complete darkness, fog); (5) broad-range functionalities, including opportunity of automatic recording of pre-emergency conditions, automatic recording followed by the command of alarm system etc.
Among the shortcomings of TV system of high sharpness is that fact that the problem of increasing of noise suppression is not solved jet. In the digital TV the problem of increasing image sharpness is not solved. Their common shortcoming is their bad compatibility with existing systems of standard TV and very high complicativeness and cost. The perspective alternative to such systems is TELAN TV system of high quality. This system is free from above mentioned defects. TELAN system by receiving signals from existing standard transmitters provides improving of image sharpness to the level that is limited only by solving ability of cathode ray- tube and provides additional suppression of high frequency hindrances to 20 dB. Cost of such system practically doesn't distinguish from existing today television technic. Such results may be achieved by using psycho-physiological surplusment of analog video signals.
Restoration of video information may be provided by digital means with using noise steady coding and decoding of initial information with introduced in it some surplusment. But initial television information, in the form of analog videosignals, possesses considerable surplusment, cause man's brain gets less than 1 percent of reproduced on TV screen information. This so-called physiological video information surplusment at present is not used in television. But it is used in following means of videosignal restoration that allows to improve considerably horizontal sharpness of image with increasing noise suppression.
Even in existing standard television systems takes place a great informational surplusment, as far as man's mind receives less than 1 percent of this information. In high- resolution TV systems this so-called physiological video information surplusment increases more. That's why such TV systems appear to be too complicated and too expensive. Acceptable alternative to high resolution television may be using in existing television the means of video signal analog restoration, by means of which considerable improvement of picture quality is made.
KEYWORDS: Data storage, Optical storage, Computer networks, Information technology, Computing systems, Data communications, Computer architecture, Reliability, Data transmission, Magnetism
The paper considers the information technology allowing personal computer users to create personal databases that are sufficiently full and can be quickly renewed through the TV communication channels. The advantage of this information technology over that used in the computer networks is its absolute protection from unauthorized access. Suggested is an architecture of the computer external memory comprising the subsystems of subscriber and archive memories and providing a considerable reduction of the mean access time over the entire volume of the information stored in the personal databases. The cylindrical optical information carries are shown to be most promising in the mass storage systems, since it is possible to realize in them the multilayer recording with a great number of registering layers.
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