lowasis
commented
5 years ago OK, I got it You means that some STB can recognize maximum three digit key so change channel when sending last 0 of 1, 0, 0, so sending OK key can be displayed channel information, right? I use three STB(SKB IPTV, KT IPTV, DLIVE CableTV), but OK key does not cause such a problem. OK key is just used for input of last digit key, not cause displaying channel information. Of course, regardless of OK key, the STBs always show the channel information for a moment when the channel is changed. But your feedback is very helpful, so I'll refer it.
Thank you
It is thought that the key combination can be improved to send the IR remote control signal for channel change. For channel 9, send the key in the order of EXIT, 9, OK. For channel 100, send the key in the order of EXIT, 1, 0, 0, OK. In case of three-digit key, channel information can be displayed by OK key when tuning is completed with 1,0,0 input. It can be improved if you send it to EXIT, 0, 0, 9 for 9th channel, and EXIT, 1, 0,0 for 100th channel. Tests are required on several devices, since the keystrokes in this proposal do not know how they work on some devices.