ARIB is using a bunch of encodings when transmitting the text information, such as EPG, cc and BML text encoding. Control code is used to switch the encoding. This gem is used to convent the text information to standard EUC-JP encoding.

Examples :

require ‘jis2euc’

raw = “48 56 41 48 46 62 4d 46 e 32 89 2d 8a 1b 24 3b ” s = raw.split.map {|t| (“0x”+t).to_i(16)}.inject(“”) {|p,c| p << c.chr}

euc_s = Jis2euc.jis2euc(s,true) #set the 2nd parameter to ture will enable debug information

#output debug information convert following string to euc : 48 56 41 48 46 62 4d 46 e 32 89 2d 8a 1b 24 3b c1 : 48 ->Char-> kanji1 , 2 番c1 : 41 ->Char-> kanji1 , 2 番組c1 : 46 ->Char-> kanji1 , 2 番組内c1 : 4d ->Char-> kanji1 , 2 番組内容c1 : e ->Is CTL LS1 : GL=>G1, locking shift c1 : 32 ->Char-> eisu , 1 c1 : 89 ->Is CTL ingor c1 : 2d ->Char-> eisu , 1 c1 : 8a ->Is CTL ignor c1 : 1b ->Is CTL ESC .. -> CTL 0x24 Type 3b 番組内容２―