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SAE J2735-Draft-Rev18 [issued: 06-26-07]
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176 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
</xs:complexType>
Used by: This entry is used directly by one other data structure in this standard, a DF called DF_ValueList
9.9 Data Frame: DF_DDateTime
Use: The DSRC style date is a compound value consisting of finite-length sequences of integers (not
characters) of the form: "yyyy, mm, dd, hh, mm, ss (sss+) (offset)" - as defined below. Because the length
of each element is known, no inner element tagging is normally used in transmission. Thus, this data frame
occupies 10 bytes in total, and 8 bytes when the time offset is not present. In typical use in DSRC
applications there is no need to send the offset representing the local time zone, so the most common
representation for the data frame occupies 8 bytes and provides a resolution of one millisecond.
ASN.1 Representation:
DDateTime ::= SEQUENCE SEQUENCE {
year DYear, -- 2 bytes
month DMonth, -- 1 byte
day DDay, -- 1 byte
hour DHour, -- 1 byte
minute DMinute, -- 1 byte
second DSecond, -- 2 bytes
offset DOffset OPTIONAL, -- 2 bytes, Time zone if present
}
XML Representation:
<xs:complexType name="DDateTime" >
<xs:sequence>
</xs:sequence>
</xs:complexType>
Used by: This entry is directly used by the following 3 other data structures in this standard (record type,
descriptive name, ASN.1, and XML name (if present) of each):
DF
<XML>, and
DF
<XML>, and
DF
In addition, this item may be used by data structures in other ITS standards.
9.10 Data Frame: DF_DMonthDay
Use: The DSRC style month-day is a compound value consisting of finite-length sequences of integers (not
characters) of the form: "mm, dd" - as defined below. Because the length of each element is known, no
inner element tagging is normally used in transmission. Thus, this data frame occupies 2 bytes in total.
ASN.1 Representation:
DMonthDay ::= SEQUENCE SEQUENCE {
month DMonth, -- 1 byte
day DDay, -- 1 byte
}
XML Representation:
<xs:complexType name="DMonthDay" >
<xs:sequence>
</xs:sequence>
</xs:complexType>
Used by: This entry is used directly by one other data structure in this standard, a DF called DF_ValueList