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SAE J2735-Draft-Rev26 [issued: 09-18-08]
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57 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
<!-- 1 byte -->
<xs:element name="hour" type="DHour" />
<!-- 1 byte -->
<!-- 1 byte -->
</xs:sequence>
</xs:complexType>
In addition, this item may be used by data structures in other ITS standards.
6.18 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 {
month DMonth, -- 1 byte
day DDay -- 1 byte
}
XML Representation:
<xs:complexType name="DMonthDay" >
<xs:sequence>
<xs:element name="month" type="DMonth" />
<!-- 1 byte -->
<xs:element name="day" type="DDay" />
<!-- 1 byte -->
</xs:sequence>
</xs:complexType>
In addition, this item may be used by data structures in other ITS standards.
6.19 Data Frame: DF_DTime
Use: The DSRC style time is a compound value consisting of finite-length sequences of integers (not
characters) of the form: "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 6 bytes in total, and 4 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 4 bytes and provides a resolution of one millisecond over a range
of one day.
ASN.1 Representation:
DTime ::= SEQUENCE {
hour DHour, -- 1 byte
minute DMinute, -- 1 byte
second DSecond -- 2 bytes
}
XML Representation:
<xs:complexType name="DTime" >
<xs:sequence>
<xs:element name="hour" type="DHour" />
<!-- 1 byte -->
<xs:element name="minute" type="DMinute" />
<!-- 1 byte -->
<xs:element name="second" type="DSecond" />
<!-- 2 bytes -->
</xs:sequence>
</xs:complexType>
In addition, this item may be used by data structures in other ITS standards.
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