Set-top boxes; digital television receivers; global position system (GPS); signal converters; television receivers; softwares for set-top boxes, DVB, GPS, navigation, television, and computers; signal converters of transforming analogy and digital signals; remote controllers; televisions; antennas; codec (encoders/decoders); satellite navigators; navigators; Gyro (gyroscope); tuners; auto electric navigators; modem (modulator-demodulator); antenna receivers; global positioning system (GPS) receivers; multimedia players and recorders; displays; audio systems; speakers