Patent ID: 6292846
Filing Date: 2001-09-18
Classification: H04L,H04N

Abstract:
an information recording system comprising:an information recording apparatus which selectively records incoming digital or analog signals on recording media loaded therein so that both digital type recording media and analog type recording media can be used in said information recording apparatus; andat least one external electronic apparatus connected to said information recording apparatus via a bus transmitting digital signals, whereinsaid external electronic apparatus comprising a command transmitting means for sending first, second, third and fourth commands to said information recording apparatus via said bus, said first command inquiring the type of recording media loaded in said information recording apparatus, said second command designating digital signal or analog signal as a signal type of information to be recorded on said recording media, said third command designating a track pitch required when signals are recorded on said recording media, and said fourth command designating a recording rate required for recording the digital signals, said information recording apparatus comprises a command receiving means for receiving said command sent from said external electronic apparatus and interpreting the content of the received command, a response transmitting means for sending a response replying to the interpreted command content to said external electronic apparatus via said bus, and a control means for performing a control according to the interpreted command content, and said external electronic apparatus, after sending said first command, sends said second command in response to a judgement result of detecting whether said recording media loaded in said information recording apparatus is the digital type recording media dedicated for recording digital signals or the analog type recording media dedicated for recording analog signals, sends said third command when the recording media loaded in said information recording apparatus is the analog type recording media, and sends said fourth command when the recording media loaded in said information recording apparatus is the digital type recording media.