Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1985-09-13
1987-07-21
Goldberg, E. A.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358105, 358138, H04N 712, H04N 718
Patent
active
046822259
ABSTRACT:
Methods and apparatus are provided for automatic and/or manual adaptive bandwidth compression of telemetry.
An adaptive sampler (16) samples a video signal from a scanning sensor (12) and generates a sequence of sampled fields. Each field and range rate information from the sensor are then sequentially transmitted to and stored in a multiple adaptive field storage means (22). The field storage means (22) then, in response to an automatic or manual control signal, transfers the stored sampled field signals to a video monitor (24) in a form for sequential or simultaneous display of a desired number of stored field signals.
The sampling ratio of the adaptive sample (16), the relative proportion of available communication bandwidth allocated respectively to transmitted data and video information, and the number of fields simultaneously displayed are manually or automatically selectively adjustable in functional relation to each other and detected range rate. In one embodiment, when relatively little or no scene motion is detected, the control signal maximizes sampling ratio and cause simultaneous display of all stored fields, thus maximizing display resolution and bandwidth available for data transmission. When increased scene motion is detected, the control signal is adjusted accordingly to cause display of fewer fields. If greater resolution is desired, the control signal is adjusted to increase sampling ratio.
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Barr Hardie R.
Fein Edward K.
Foster Patrick W.
Goldberg E. A.
Manning John R.
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