Television – Special applications – Simulator
Patent
1991-04-12
1994-09-13
Herndon, Heather R.
Television
Special applications
Simulator
348590, 348586, G06F 1500
Patent
active
053476220
ABSTRACT:
A digital image compositing system (20) has background, foreground, key and mask busses (22), (24), (26), and (28). An analog key input (30) is connected to the key and mask busses (26) and (28) through an analog/digital (A/D) converter (32) by crosspoint switches (34). Four digital D1 video signal inputs (36) are connected to the busses (22-24) through additional crosspoint switches (34). The key and mask busses (26) and (28) are respectively connected to frame stores (38) and (40). A key processing toolkit subsystem (42) is connected to the output of the frame stores (38) and (40). A compositor subsystem (44) is connected to the background and foreground busses (22) and (24) and to the output of the key processing toolkit subsystem (42). A D1 program output (46) is connected to the output of the compositor subsystem (44) on program bus ( 48). A D1 key output (50) is connected to the output of key processing toolkit subsystem (42) on processed key bus (52). A D1 auxiliary output (54) is connected to program bus (48), background bus (22), foreground bus (24), processed key bus (52) and mask bus (28) by crosspoint switches (56). An analog output (58) is also connected to the busses (48), (22), (24), (52) and (28) by additional crosspoint switches (56) through D/A converter (60). A microprocessor (62) is connected to provide control signals for all of the functional elements of the system (20). A control keyboard and display (64) is connected to the microprocessor at (66). The microprocessor (62) is also connected to a video editor at (68).
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Takemoto Sohei
Woodhouse Kenneth A.
ACCOM Inc.
Herndon Heather R.
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