Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1989-06-01
1992-07-28
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358160, H04N 5272, H04N 545
Patent
active
051344840
ABSTRACT:
Data to be displayed is combined with a composite video signal. The data is stored in a memory in digital form. Each byte of the data is read out in sequential fashion to determine: the recurrence display rate of the data according to the frame sync pulses of the video signal; the location of the data within the video image according to the line sync pulses of the video signal; and the location of the data display within the video image according to the position information. Synchronization of the data with the video image is derived from the sync pulses of the composite video signal. A similar technique is employed to combine sound data with an audio signal. Data to be displayed may be presented as a subliminal message or may persist for a given time interval. The data may be derived from a variety of sources including a prerecorded or live video signal. The message may be a reminder message displayed upon a television screen to remind the viewer of an appointment. The data may be stored in a variety of different memory devices capable of high speed data retrieval. The data may be generated locally on-line or off-line and transferred to memory which stores the data necessary to create the message.
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Groody James J.
MindsEye Educational Systems, Inc.
Powell Mark R.
Weinstein Louis
LandOfFree
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