diff --git a/viera.py b/viera.py
index 4946655..676a327 100644
--- a/viera.py
+++ b/viera.py
@@ -116,6 +116,20 @@ def index(self):
     def hold(self):
         self._sendkey('NRC_HOLD-ONOFF')
 
+    def ch_up(self):
+        self._sendkey('NRC_CH_UP-ONOFF')
+    
+    def ch_down(self):
+        self._sendkey('NRC_CH_DOWN-ONOFF') 
+
+    def input(self):
+        self._sendkey('NRC_CHG_INPUT-ONOFF') 
+
+    def last_view(self):
+        self._sendkey('NRC_R_TUNE-ONOFF') 
+
+
+
 class Action(object):
     def __init__(self, name, arguments):
         self.name = name