short_name (ATSC)
The short_name field is a 112-bit field in ATSC TVCT, CVCT and a 128 bit field in SVCT table sections that gives the short_name for the virtual channel.
Each letter of the short_name is formatted as a 16-bit Unicode character, with the high order byte transmitted first. So, short_name for TVCT and CVCT entries is seven Unicode characters, which short_name for SVCT entries is eight Unicode characters.
If the display name is less than the number of permitted characters, 0 / 0x00 is appended to the end until the alloted number of bits has been reached.
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