An optical audio disc comprises the first pack (A Pack), the second pack
(A-CONT Pack), the third pack (V Pack), and the fourth pack (CONT Pack)
in which the A-(CONT Pack is placed at the head of a data array and a
plurality of the A and V Packs follow the A-CONT Pack in each audio
contents block unit (ACBU). Information contained in an A-CONT Pack
manages audio data contained in the A Pack. The A Pack contains audio
data and the V Pack contains other data than the audio data such as
closed caption (CC) data as well as video data. A reproduction apparatus
for an optical audio disc (DVD-Audio disc) comprises the CONT Pack
detector section 1103, the A-CONT Pack detector section 1109, the
parameter sections 1108 and 1114, the V Pack buffer section 1104, and the
A Pack buffer section 1110. The CONT Pack detector section 1103 and the
A-CONT Pack detector section 1109 detect reproduced CONT and A-CONT Packs
contained in the DVD-Audio disc 1101 respectively. Control parameters of
reproduced data are arranged in the parameter sections 1108 and 1114, and
at the same time V Packs controlled by the information in the CONT Pack
and A Packs controlled by the information in the A-CONT Pack are
sequentially written in the V Pack buffer section 1104 and the A Pack
buffer section 1110 respectively.