Radio communication apparatus

• US 20040104855A1
• Filed: 09/22/2003
• Published: 06/03/2004
• Est. Priority Date: 02/07/2002
• Status: Active Grant

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Miyazaki, Hideto, Nomiyama, Yasuhiko
• Granted Patent: US 7,389,127 B2
• Time in Patent Office: Days
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/2291 used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN] H01Q1/241 takes precedence; WLAN in general H04W
• CPC Class Codes: H01Q 21/29 Combinations of different interacting antenna units for giving a desired directional characteristic H01Q25/00 takes precedence
• CPC Class Codes: H01Q 3/02 using mechanical movement of antenna or antenna system as a whole

Abstract

Short-distance radio communication equipment having a Bluetooth communication feature can maintain a stable reception status by automatically adjusting the reception status of an antenna when the reception status thereof deteriorates.

Claims

1. Radio communication equipment comprising:

a reception status determining means for determining a received level of a signal received through radio communications; and

a radio communication status adjusting means for automatically adjusting a radio communication status so that the radio communication status is optimum according to the received signal level determined by said reception status determining means.

2. Radio communication equipment comprising:

a panel provided with an antenna and tiltably mounted on a main body of radio communication equipment;

a reception status determining means for determining a received level of a signal received through radio communications; and

a tilting angle adjusting means for, when the received signal level determined by said reception status determining means is equal to or less than a predetermined value, automatically adjusting a tilting angle of said panel so that the received signal level is increased to a maximum.

3. The radio communication equipment according to claim 2, characterized in that said panel tiltably mounted on said main body of radio communication equipment is provided with a plurality of antennas having different directivities.

4. Radio communication equipment comprising:

an antenna disposed in a main body of radio communication equipment;

a panel tiltably mounted on said main body of radio communication equipment so as to cover said antenna;

a reception status determining means for determining a received level of a signal received by said antenna; and

a tilting angle adjusting means for, when the received signal level determined by said reception status determining means is equal to or less than a predetermined value, opening said panel so that a front side of said antenna can be viewed from outside said main body of radio communication equipment.

5. The radio communication equipment according to claim 4, characterized in that said equipment includes an internal antenna disposed in the main body of said radio communication equipment and an external antenna;

a reception status determining means for determining a received level of a signal received by said internal antenna; and

a display means for, when the received signal level determined by said reception status determining means is equal to or less than a predetermined value, opening said panel so that a front side of said internal antenna can be viewed from outside said main body, and for, when said reception status determining means determines that the received signal level is still equal to or less than the predetermined value after further radio communications are carried out, generating a display screen that urges use of said external antenna.

6. The radio communication equipment according to claim 5, characterized in that said equipment includes a connector disposed in part of said main body of said radio communication equipment, which is not covered by said panel, for connecting with said internal and external antennas.

7. The radio communication equipment according to claim 5, characterized in that said equipment includes a stretchable antenna disposed in part of said main body of said radio communication equipment, which is not covered by said panel.