JIS X 0201 has the following code elements:
ISO-IR 13 Japanese katakana (phonetic) characters (94 characters)
ISO-IR 14 Japanese romaji (alphanumeric) characters (94 characters)
JIS X 0201 defines a 7-bit romaji code table (ISO-IR 14), a 7-bit katakana code table (ISO-IR 13), and the combination of romaji and katakana as an 8-bit code table (ISO-IR 14 as G0, ISO-IR 13 as G1).
The 7-bit romaji (ISO-IR 14) is identical to ASCII (ISO-IR 6) except that bit combination 05/12 represents a yen sign and bit combination 07/14 represents an over-line. These are national Graphic Character allocations in ISO 646.
Escape Sequence for ISO/IEC 2022 (for reference) (For the Defined Terms, see PS 3.3)
|ISO-IR 14||ISO-IR 13|
|G0 set||ESC 02/08 04/10||ESC 02/08 04/09|
|G1 set||ESC 02/09 04/10||ESC 02/09 04/09|
Notes: 1. The table does not include the G2 and G3 sets that are not used in DICOM. See Section 220.127.116.11.1.
2. Defined Terms ISO_IR 13 and ISO 2022 IR 13 for the value of the Specific Character Set (0008,0005) support the G0 set for ISO-IR 14 and G1 set for ISO-IR 13. See PS 3.3.