The traditional recorders from early disc and recording tape to video tape, VCD, DVD, etc have many defects like disrecovery, non-environment-protection, vibration fear, big volume and undivided link of disc head, motor and disc.

• 影音播放从最早听音乐的唱片、录音带，到后来的影音磁带、VCD、DVD等，这些产品都存在不可回收、不环保、怕振动、体积大，离不开读头、电机马达和盘片等多方面的缺点。