Johyo (memorial to the emperor) was an act of handing Monjo (written material) (or Hyo [letters]) or the Monjo itself to the Emperor from any Koshin (Emperor's family) including Togu (crown prince), all the officials or general public.
上表（じょうひょう）とは、東宮以下の皇親・百官より庶民に至るまでが天皇に対して文書（表）を奉ること、またその文書（表）自体を指す。