Method of radio transmission between a radio transmitter and radio receiver
First Claim
1. A method of monitoring a radio transmitter relative to a radio receiver to which the radio transmitter transmits a radio transmission comprising:
- periodically transmitting radio transmissions from the radio transmitter with each transmission including at least one group of data bits encoding a repeat of at least one digit of an identification code which identifies the radio transmitter and synchronization information with the synchronization information upon reception being used for synchronizing a clock of the radio receiver.
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Accused Products
Abstract
An antenna assembly providing selectable omnidirectional or directional reception of radio transmissions in a frequency band in accordance with the invention includes an electrically conductive reflector (432) defining a cavity (702) having a bottom (708), an opening (714) and a surface (704 and 706) extending from the bottom to the opening and an electrical output (763); an electrically conductive loop (431) coupled to ground and having an electrical outlet (766) for coupling to an RF amplifier (407), the loop being positioned between the bottom opening of the cavity; a RF switch (406) having an input (760) and first and second outputs (762 and 764), the RF switch having a first switching state electrically connecting the input to the first output and a second switching state electrically connecting the input to the second output, the first switch output being electrically coupled to ground and the second switch output being electrically coupled to the output of the electrically conductive loop; and wherein the first switching state provides the directional reception and the second switching state provides the omnidirectional reception of the radio transmissions.
71 Citations
42 Claims
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1. A method of monitoring a radio transmitter relative to a radio receiver to which the radio transmitter transmits a radio transmission comprising:
periodically transmitting radio transmissions from the radio transmitter with each transmission including at least one group of data bits encoding a repeat of at least one digit of an identification code which identifies the radio transmitter and synchronization information with the synchronization information upon reception being used for synchronizing a clock of the radio receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A method of transmission between a radio transmitter and a radio receiver comprising:
periodically transmitting radio transmissions from the radio transmitter with each transmission including at least one group of data bits encoding a repeat of at least one digit of an identification code which identifies the radio transmitter and synchronization information with the synchronization information upon reception being used for synchronizing a clock of the radio receiver. - View Dependent Claims (39, 40, 41, 42)
Specification