Appeal No. 1999-1447
Application No. 08/446,316
Claims 45 and 49 are illustrative of the claimed
invention, and they read as follows:
45. A disc playing apparatus for reproducing information
from a disc storing at least video picture information and
audio information corresponding to the video picture
information, and receiving a combined video/audio information
signal from the disc indicative of both said video picture
information and said audio information, said apparatus
comprising:
a sequence controlling element, receiving said combined
video/audio information signal, and determining at specific
times whether the contents of said video/audio information
signal are representative of audio or video and producing a
first signal indicative of audio being present, said sequence
controlling element further producing a second, squelch
signal, said squelch signal being in an active state for a
time period at least on the order of one-tenth second and
transitioning to said active state at least partially at
distinct times from transitions of said first signal;
an audio processing circuit, receiving said combined
audio/video signal, and receiving said first signal from said
sequence controlling element indicative of audio being
present, and, when said first signal indicates that audio is
present, processing the audio signal to produce an output
indicative of the audio signal; and
said audio processing circuit receiving said squelch
signal, and preventing output of audio information when said
squelch signal is active.
49. A method for reproducing information from an
information-containing disc having at least video picture
information and audio information corresponding to the video
picture information recorded thereon, comprising the steps of:
scanning the disc to produce a combined video/audio
information signal from the disc indicative of both video
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