Apparatus and method for communication of visual graphic data with radio subcarrier frequencies
First Claim
1. A portable receiving unit for generating a visual graphic display from data transmitted from a subsidiary communication authorized FM radio site, using a subcarrier channel having a narrow bandwidth, comprised of:
- a receiver for receiving said data at a remote location, said receiver being especially designed for receipt of subcarrier channel transmissions;
a post-transmission processing system for processing said data at said remote location, so that said data may be displayed in visual form, said post-transmission processing system being in in-line communication with said receiver;
wherein said receiver and said post-transmission processor are housed at the same receiving station in close physical proximity to each other, said receiver having means for shielding said receiver from interference such that said receiver may operate simultaneously with said post-transmission processor; and
a display for displaying said data in visual graphic form at said remote location, said display being in in-line communication with said post-transmission processing system.
6 Assignments
0 Petitions
Accused Products
Abstract
A data communication system in which video data is digitized, compacted, and transmitted by a frequency modulated radio station having a subsidiary communication authorization. The data is broadcast on a subcarrier channel to a radio receiver, which is connected to a microcomputer. This microcomputer generates a visual graphic display on a screen, and performs various other functions, such as error checking and permitting the user to alter the display. One application of the invention is real time monitoring of visual information by a remote receiving station. Furthermore, the invention may include a receiver that is turnable, thereby providing data to a mobile receiving station, such as an airplane. Although the invention is especially useful for monitoring weather information, it is adaptable for use with any visual graphics data that is desired to be transmitted via FM subcarrier frequencies.
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Citations
23 Claims
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1. A portable receiving unit for generating a visual graphic display from data transmitted from a subsidiary communication authorized FM radio site, using a subcarrier channel having a narrow bandwidth, comprised of:
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a receiver for receiving said data at a remote location, said receiver being especially designed for receipt of subcarrier channel transmissions; a post-transmission processing system for processing said data at said remote location, so that said data may be displayed in visual form, said post-transmission processing system being in in-line communication with said receiver; wherein said receiver and said post-transmission processor are housed at the same receiving station in close physical proximity to each other, said receiver having means for shielding said receiver from interference such that said receiver may operate simultaneously with said post-transmission processor; and a display for displaying said data in visual graphic form at said remote location, said display being in in-line communication with said post-transmission processing system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for communicating visual graphics data from a network of subsidiary communication authorized FM radio sites to a remote and mobile receiving station, using a subcarrier channel having a narrow bandwidth, comprising the steps of:
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processing said data prior to transmission from said FM site, said processing including compaction of said data such that said data may be transmitted over said subcarrier in near real time; modulating said data after said data has been compacted to a subcarrier channel of said FM site, as required by said subcarrier channel; transmitting said data on a subcarrier frequency of said FM site; receiving said data at said remote location, using a radio receiver tuned to an in-range site within said network of FM sites, in a manner compatible with said subcarrier transmission; processing said data, after transmission, at said remote location so that said data may be displayed in visual graphics form, using a computer in close physical proximity to said receiver, such that said receiver and said computer may be easily transported as a portable unit; wherein said receiving step and said processing step occur in parallel; shielding said receiver from interference resulting from said processing step; displaying said data in visual graphics form at said remote location; and re-tuning said receiver at said remote and mobile receiving unit to a different receiving frequency as one of said FM sites becomes out of range and another of said FM sites becomes within range. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A mobile receiving unit for creating a visual graphics display in near real time from compacted data transmitted on a radio channel, using a subsystem of an existing communication system having a transmitter, and using a narrow bandwidth for the transmission, comprising:
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a receiver for receiving said signals from said transmitter; a post-transmission processing system for receiving said signals from said receiver and for converting said signals to data usable by a visual graphics display, wherein said post-transmission processing system is programmed for error correction by detecting whether correct data has been received and substituting a proximate line for an incorrect line; and a display for displaying said data in visual graphics format, said display being in in-line communication with said post-transmission processing system. - View Dependent Claims (17, 18, 19)
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20. A system for receiving and displaying weather maps in visual graphics form, for which the data has been transmitted by radio subcarrier channel in compacted form, comprising:
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a receiver for receiving said compacted data, said receiver being designed for receipt of subcarrier channel transmissions; a processing system for interpreting said compacted data and for processing said compacted data, so that said data may be displayed in visual form in near real time, said processing system being programmed to ensure a continuously updated display, and said processor system being in in-line communication with said receiver; wherein said receiver and said post-transmission processing system are housed in close proximity to each other and wherein said receiver has means for shielding said receiver from interference such that said receiver may operate simultaneously with said computer; and a display for displaying said data in visual graphics form at said remote location, said display being in in-line communication with said processing system. - View Dependent Claims (21, 22, 23)
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Specification