Appeal No. 95-4351
Application 08/048,109
claims, under 35 U.S.C. § 103 as unpatentable over prior art. We
reverse.
The claimed invention is an audio-visual display system
for presenting a series of still pictures in synchronism with the
playback of one or more recorded audio programs. The audio
program information includes audio-frequency cue signals for
controlling the visual display apparatus, which is in the form of
a circular disk rotated by a stepping motor.
Claim 1, the sole independent claim, reads as follows:
1. An audio-visual system which makes it possible for
a user to see during successive time periods a still image of a
particular subject while listening to a program related thereto;
said system comprising:
a. an audio-record player having a loud speaker and an
output jack to which are both fed signals derived from the record
being played;
b. a record to be played by the player having a
recording thereof of a series of programs producing signals that
lie in the sonic range, each related to a different subject, each
program being preceded by a cue signal recording that lies in a
range outside the sonic range; and
c. a viewer unit for successively presenting to the
eyes of the user at a viewing position a series of a film frames,
each having an image of a subject corresponding to a subject in a
respective program in the recording, said unit including a
stepping motor responsive only to each cue signal yielded at the
output jack to advance to the viewing position, the image frames
being supported in a circular disc that is rotated by the
stepping motor, said stepping motor being provided with a control
circuit having an input jack coupled to the output jack of the
player through a high-pass filter that rejects said sonic signals
and passes said cue signals, said control circuit supplying
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