초록 ▼

A message filtering system is provided for filtering generally broadcast messages received by a movable unit. The generally broadcast message includes an information segment including location, time and/or velocity information relating to an event of potential interest to the unit which has occurred

A message filtering system is provided for filtering generally broadcast messages received by a movable unit. The generally broadcast message includes an information segment including location, time and/or velocity information relating to an event of potential interest to the unit which has occurred in the past and which has continuing consequences for the unit. The movement history of the unit is stored along with data selection information and a determination is made as to whether the information contained in the broadcast information segment is of interest based on this stored information.

대표청구항 ▼

A message filtering system is provided for filtering generally broadcast messages received by a movable unit. The generally broadcast message includes an information segment including location, time and/or velocity information relating to an event of potential interest to the unit which has occurred

A message filtering system is provided for filtering generally broadcast messages received by a movable unit. The generally broadcast message includes an information segment including location, time and/or velocity information relating to an event of potential interest to the unit which has occurred in the past and which has continuing consequences for the unit. The movement history of the unit is stored along with data selection information and a determination is made as to whether the information contained in the broadcast information segment is of interest based on this stored information. function; a second high-frequency phase shifting element connected between said output port and the other terminal of said first high-frequency phase shifting element and having a phase change amount of 90° at the frequency f0,said second high-frequency phase shifting element having an impedance converting function; and a second high-frequency impedance element having one terminal connected to a common connection point between said first and second high-frequency phase shifting elements, the other terminal grounded, and an impedance substantially constituted by a reactance, wherein the impedance of said first high-frequency