US 4,907,159 A · Device for receiving and processing road information

Abstract

Device for receiving and processing road information messages transmitted in digital form, each message including at least a first section for indicating the zone of the road network to which the message refers, which device includes for the control of the data processing a data processing unit which is connected to a bus for the transfer of data, to which bus are also connected a reception memory for temporarily storing the received messages, a selection unit enabling the selection from among the stored messages of those concerning a zone to be designated and a presentation unit for presenting the selected messages. The device also includes a message analysis unit which includes a zones table memory, which analysis unit is provided for recognizing the zone in question each time a message is received on the basis of the said first section of the received message and for storing in the zones table, by means of at least one indicator for each message, the received messages according to the zone to which they belong, which selection unit is provided for accessing the zones table and for carrying out the said selection by fetching messages for the designated zone in the zones table.

Claims24

Dependent claims

Device for receiving and processing road information messages transmitted in digital form, each message including at least a first section for indicating a respective zone, of a road network, to which respective zone the message refers, which device comprises:

(a) a data processing unit for data processing control;
(b) a bus, connected to the data processing unit, for transferring data;
(c) a reception memory, connected to the bus, for storing received messages;
(d) a selection unit, connected to the bus, for enabling selection from among the received messages stored in the reception memory of those received messages concerning a zone to be designated;
and
(e) a presentation unit, connected to the bus, for presenting selected messages, selected by the selection unit;
wherein the improvement comprises:
(f) a message analysis unit, which includes a zones table memory, which message analysis unit is for:
(i) recognizing each respective zone referred to by the received messages, on the basis of the first section of each received message;
and
(ii) storing in the zones table, by means of at least one indicator for each received message, the received messages according to the zones to which they refer, and that
(g) the selection unit accesses the zones table and carries out the selection by fetching messages for the designated zone from the zones table.

9 more elements

Device according to the first claim wherein:

(a) different zones of the road network correspond to roads and are indicated by a category and a road number,
(b) the zones table memory includes a table of roads where the received messages are placed according to the roads to which they refer, and
(c) the at least one indicator is at least one respective address at which the received messages are stored in the reception memory.

Dependencies are inferred from the claim text.

Device for receiving and processing road information

Life of this patent

Device for receiving and processing road information

Life of this patent

Abstract

Claims24