초록 ▼

Within a desired service area, multiple transmitters at separately located sites simultaneously broadcast the same multi-channel, multi-program signal. Broadcast waves from the transmitters propagate throughout substantially overlapping portions of the service area. Obstructions in the service area,

Within a desired service area, multiple transmitters at separately located sites simultaneously broadcast the same multi-channel, multi-program signal. Broadcast waves from the transmitters propagate throughout substantially overlapping portions of the service area. Obstructions in the service area, e.g. mountains, buildings, trees, etc., may block reception from one or more of the transmitters at certain sites. However, at most receiving sites, the receiving antenna can receive a clear line-of-sight transmission from at least one of the transmitters. In the preferred implementation, the channels are 6 MHz wide channels broadcast in the super high frequency microwave portion of the spectrum. Each such channel carries a multiplexed digital data stream containing packets of information for a plurality of programs, e.g. television programs.

대표청구항 ▼

A radio frequency simulcasting method for transmitting information from multiple spaced transmitting sites to multiple receiving sites in a reception area, the method comprising the steps of: a) simultaneously transmitting from said transmitting sites the same signal so that areas of propagation fro

A radio frequency simulcasting method for transmitting information from multiple spaced transmitting sites to multiple receiving sites in a reception area, the method comprising the steps of: a) simultaneously transmitting from said transmitting sites the same signal so that areas of propagation from respective ones of the transmitting sites substantially overlap over each other in at least a major portion of said reception area, said signal transmitted from said transmitting sites including multiplexed channels, b) receiving a signal containing a plurality of time delayed copies of said transmitted signal at one of the receiving sites; c) processing at least a portion of the received signal to acquire a single signal corresponding to a selected one of the multiplexed channels; and (d) presenting information contained in the acquired signal.