Audio-visual programmer
AssigneeAudio-Sine, Inc.
InventorsErik N. Honebrink, Jon N. Myntti
Life of this patent
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Abstract
A multimedia motion picture and photographic slide projection control apparatus which permits a plurality of projector devices to be controlled from an operator's console. Manually operable switch means, operating through digital control means, develops a Program Command Code Word for each change in switch conditions, the control word being decoded to provide an ON/OFF response by selected projectors, as well as lamp dissolve rate response. Simultaneously, the Program Command Code Words are recorded on a magnetic tape such that when a given presentation has been developed to the satisfaction of the operator, the stored command words can be used to control the projection devices to provide repetitive performances of the same audio-visual presentation.
Claims11
Apparatus for controlling the operation of plural photographic projectors comprising, in combination:
- (a) manually operable switching means for selecting which of and how a plurality of projectors are to be activated;
- (b) encoding means coupled to said switching means for developing multibit Program Command Words upon each operation of said switching means;
- (c) a change of state detector connected intermediate said switching means and said encoding means for detecting a change in the status of said switching means;
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- (d) decoding means responsive to said Program Control Words for applying control signals to selected ones of said plural projectors for causing said selected projectors to operate in a desired fashion.
Apparatus for controlling the ON/OFF state and dissolve rate for plural photographic projector devices comprising:
- (a) first and second banks of switches operable between open and closed positions, one switch in each of said banks being associated with a corresponding projector;
- (b) means connected to said switches for detecting a change in state of switches in said first bank from an open to a closed position or from a closed to an open position;
- (c) encoding means coupled to said change of state detecting means for developing a unique binary code for each switch in said first bank whose state has been changed;
- (d) first multiplexer means coupled to said switches in said first bank and responsive to said unique binary code for developing an additional code bit indicative of whether the switch defined by said unique code is open or closed;
- (e) second multiplexer means coupled to said switches in said second bank and responsive to said unique binary code for developing a further code bit indicative of whether the switch in said second bank defined by said unique code is opened or closed;
- (f) means for transmitting said unique code, said additional bit and said further bit in a serial format bit stream to digital data recording means and to receiving means, said receiving means including serial-to-parallel converting means;
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- (g) decoding means coupled to said receiving means for decoding said unique code, said additional bit and said further bit for producing control signals for the projector associated with the switch in said first bank whose state has been changed.
Dependencies are inferred from the claim text.