Transmission devices and methods

摘要

In a transmission device, an image signal and an audio signal are played back at a speed which is n times normal speed from a recording medium and the played back image signal is encoded (20). The played back audio signal is sampled (23) using a sampling clock signal of a sampling frequency which is proportional to the speed which is n times normal speed. When n > 1, 1/n items of sampling data of the sampling data generated by sampling are encoded (25). When n < 1, all of the sampling data generated by sampling are encoded. The encoded image signal and encoded audio signal are then transmitted to a terminal device.