Portable communication device
View Patent ↗A portable communication device includes a first housing and a second housing that are slidably placed one on another and can shift between an open state and a closed state, a wireless circuit installed in the first housing, a first antenna installed in the second housing, and a noncontact switching member that connects together the first antenna and the wireless circuit in a noncontact manner in the open state and disconnects the noncontact between the first antenna and the wireless circuit in the closed state.
1. A portable communication device comprising:
a first housing and a second housing placed one on another;
a slide mechanism that allows said second housing to slidably move relative to said first housing between an open state wherein both said housings have a minimum overlapped area and a closed state wherein both said housings have a maximum overlapped area;
a wireless circuit installed in said first housing;
a first antenna installed in said second housing;
a noncontact switching member that connects together said first antenna and said wireless circuit by a noncontact connection in said open state, and disconnects said noncontact connection at least in said closed state; and
a housing-state detection member that detects whether both said housings are in said open state or said closed state,
wherein:
said first housing further includes a second antenna connected to said wireless circuit;
said portable communication device further comprises an antenna switching member that selectively connects said first antenna or said second antenna to said wireless circuit, and
said antenna switching member connects together said wireless circuit and said second antenna after said housing-state detection member detects said closed state.
2. The portable communication device according to claim 1 , wherein said noncontact switching member includes a pair of electrodes respectively connected to said wireless circuit and said first antenna, said pair of electrodes connecting together said first antenna and said wireless circuit by a capacitive coupling that occurs between said electrodes upon opposing of said electrodes to each other.
3. The portable communication device according to claim 2 , wherein said first and second housings include a pair of gap fixing members that fix a gap between both said of housings.
4. The portable communication device according to claim 3 , wherein said gap fixing member fixes a gap between said pair of electrodes.
5. The portable communication device according to claim 1 , further comprising a communication-state detection member that detects a communication state of said first antenna and said second antenna, wherein:
said antenna switching member connects said first antenna or said second antenna to said wireless circuit depending on a result of detection by said communication-state detection member.
6. The portable communication device according to claim 1 , wherein said housing-state detection member includes a magnetic-field generation member provided in one of said first and second housings, and a magnetic-field detection member provided in the other of said first and second housings.
7. The portable communication device according to claim 1 , wherein said first antenna is disposed in a vicinity of a portion of said second housing that is farthest from said first housing when both said housings are in said open state.