Portable radio information terminal

A portable radio information terminal comprising:

• a main body containing an information processing section;
• and
• a cover mechanically coupled to said main body by means of a rotating shaft, said cover containing a radio section;
• wherein said cover covers an upper surface of said main body by rotating around said rotating shaft;
• said cover including a first antenna with one end disposed on the opposite end of said cover with respect to said rotating shaft and a second antenna including a grounded conductor disposed on the back surface thereof;
• said cover including a receiving section;
• wherein said second antenna receives a receive radio signal when said upper surface of said main body is closed with said cover and wherein said first antenna and said second antenna diversity-receive said receive radio signal with said first antenna and said second antenna when said upper surface of said main body is not closed with said cover.

A portable radio/information terminal, comprising:

• a main body containing an information processor, a display, and an input section;
• and
• a cover with a first side hinged to said main body and that is movable between a closed position covering a surface of said main body having said display and said input section and an open position exposing said surface of said main body, said cover containing a radio receiver and transmitter, and an internal antenna having a conductive plane that blocks a magnetic coupling with said cover, said cover having an external whip antenna attached at a second side opposite said hinge;
• and
• an open/close detector for detecting when said cover is in the open position and the closed position,
• said radio receiver being connected to said open/close detector and receiving a radio signal only on said internal antenna when said cover is in the closed position and diversity receiving a radio signal on said external whip antenna and said internal antenna when said cover is in the open position.