Patent ID: 6640045
Filing Date: 2003-10-28
Classification: G11B,H04N

Abstract:
A digital information recording medium having an audio data area for storing audio contents, a video data area for storing video contents, an audio management block for storing audio management information, and a video management block for storing video management information, said medium comprising:a first substrate; a second substrate; and an adhesive layer sandwiched between said first and second substrates, wherein said audio management information includes search information for accessing any of the audio contents and video contents which are recorded in the different audio data area and video data area, respectively, wherein said audio management information includes an audio manager information management table, wherein said audio manager information management table includes auto play information specifying playback status after loading the recording medium into a player configured to playback the medium, and start address information for an audio still video set that defines a set of an audio still video, wherein a backup block for said audio management information is associated with said audio management information and includes a backup of said audio management information containing said playback status, and wherein contents of said audio data area are recorded in audio packs configured to store data of the audio contents, and still picture packs configured to store data of a still picture to be played back during playback of the contents of said audio packs, and wherein said first substrate has a first refractive index and a thickness, and the first refractive index with respect to the thickness is selected to be a range defined within the following points, refractive index=1.45 with the thickness of 0.653 mm, refractive index=1.56 with the thickness of 0.640 mm, refractive index=1.65 with the thickness of 0.640 mm, refractive index=1.65 with the thickness of 0.550 mm, refractive index=1.56 with the thickness of 0.550 mm, refractive index=1.45 with the thickness of 0.563 mm.