| 摘要 |
PURPOSE: To improve a communication with users on an information reproducing device by recording a packet of various kinds of different information categories into a sub information chanel, interleaving the packet of different categories and separating the packet of selected information category from a bit read from an information carrier. CONSTITUTION: Signals including CD signals are recorded on the information carrier 70, and its R-W sub cord bits are recorded in a format. Sub cord signals R-W are fed to a sub cord signal processing circuit, a program detecting the format which a receiving packet provides with is loaded in a micro computer 77 composing this circuit using a symbol zero of the packet. Further, a main and sub category code in the packet are read, compared with a code showing a selected main and sub category code, and a packet wherein the detected category coincides with the selected category is separated and verified. By this way, the information transfer system, improved so as to separate the bit of sub information chanel after reading recorded information, is obtained. |
