2 results about "PAL" patented technology

The invention provides a charge pal leasing and advertisement injecting device and a charge pal leasing method thereof. The charge pal leasing and advertisement injecting device comprises a user management module for storing user information, a leasing module for receiving a lease request of a user and controlling a conveying unit to output a charge pal, a return module for receiving a return request of the user, a recycling module for receiving a recycling request of the user, and a conveying unit for outputting the charge pal when receiving a leasing signal of the leasing module, recycling the charge pal when receiving the return request of the return module, and conveying the recycled old charge pal to a recycling storage area after receiving the recycling request of the recycling module. According to the charge pal leasing and advertisement injecting device and the charge pal leasing method thereof, the technical effect of conveniently leasing and returning the charge pal is achieved.

An audio demodulating circuit in accordance with the present invention for demodulating audio signals in a plurality of broadcast systems of mutually different frequency deviations such as the NTSC and the PAL, is arranged such that a connection between a trap circuit for suppressing adjacent interference and an intermediate frequency signal line can be controlled without using an externally applied special signal, based on a control voltage applied from a phase comparator with respect to a voltage control oscillator which generates a local oscillation signal for extracting an audio signal from the intermediate frequency signal.