2 results about "Analog television" patented technology

The invention relates to digital television, especially relates to a format converting device completing resolution conversion, frame frequency conversion, scan mode transfer, image ratio conversion, format color different conversion, color coordinate compensation, gamma compensation, and geometry compensation in one chip format conversion device. Advantages: in can process digital television TV signal, and analog television TV signal, microprocessor video frequency signal and other video frequency signal in one squire block, and it needs to increase new hardware, and the cost is reduced.

The invention discloses a multimedia rural scientific and technological information on-demand system, which includes a server, an on-demand device, a modulator, a cable TV network and a TV terminal, and is characterized in that: one or more servers are equipped with a broadband network interface or a telephone line The interface is connected with the telecommunication network or local area network respectively, and the computer with management and server functions is installed on the expansion slot of the computer. The on-demand card and the broadcast card are installed. The on-demand card is connected to the telephone line and one end of the demodulator respectively. The broadcast card is connected to one end of the modulator, and the other end of the demodulator and modulator is connected to the cable TV network cable. The TV at the user end is equipped with a receiving box connected to the cable TV network cable. The receiving box is equipped with a matching infrared remote control . The invention can not only realize telephone ordering, but also use infrared remote controller to perform ordering, and the ordering operation is simpler and more flexible; it is suitable for both analog TV and digital TV; the cost of management equipment is low; and remote maintenance and management of equipment can be realized.