Vehicular radio receiver with standard traffic problem database
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United States of America Patent
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-
Mar 9, 1993
Issued Date -
N/A
app pub date -
Dec 9, 1991
filing date -
Dec 29, 1989
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A vehicular radio receiver with an RDS (Radio Data System) decoder for decoding digitally coded traffic announcements is improved by using short codes for common traffic problems in order to minimize the required transmission capacity. The receiver includes a database with, for example, 256 fields, each containing a short traffic problem description. Transmission of the actual numerical values for the length of a traffic problem or for visibility in fog is dispensed with. Instead, defined standardized numerical information is stored in the same memory field as the short description of the traffic problem so that they can be retrieved together. Furthermore, a pre-determined staggering of the numerical values is provided so that the memory capacity, and the transmission capacity, does not increase unnecessarily.
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