Wireless keyboard

• US 20030080944A1
• Filed: 10/24/2002
• Published: 05/01/2003
• Est. Priority Date: 10/25/2001
• Status: Active Grant

• Current Assignee: Minebea Company Limited (MinebeaMitsumi Inc.)
• Original Assignee: Minebea Company Limited (MinebeaMitsumi Inc.)
• Inventors: Takahashi, Nobuyuki, Fukui, Masaru, Miyazaki, Naoyuki
• Granted Patent: US 6,850,227 B2
• Time in Patent Office: Days
• US Class Current: 345/168
• CPC Class Codes: G06F 3/0202 Constructional details or processes of manufacture of the input device
• CPC Class Codes: G06F 3/0231 Cordless keyboards
• CPC Class Codes: H01H 2207/048 Inductive or infrared coupling
• CPC Class Codes: H01H 2239/01 combined with other elements on the same substrate

Abstract

In a wireless keyboard including an antenna wire for radiating a keyboard output signal from a transmitting section into the air and an electrode sheet secured in a keyboard casing and having an electrically conductive pattern coated thereon, the conductive pattern constituting a part of a switch which is turned on by depressing a key, the antenna wire is formed such that an electrically conductive pattern is coated on the electrode sheet in a manner similar to the electrically conductive pattern constituting a part of the switch The antenna wire is formed at the same time as the electrically conductive pattern constituting a part of the switch and integrally with the electrode sheet.

Claims

1. A wireless keyboard comprising:

an antenna wire for radiating a keyboard output signal into the air from a transmitting sections or radiating the keyboard output signal into the air from the transmitting section and receiving a keyboard input signal radiated into the air at a receiving section;

an insulating electrode sheet having electrically conductive patterns coated thereon, each pattern constituting a part of a switch which is turned on by the depression of each key; and

a keyboard casing,

wherein the antenna wire is formed of an electrically conductive pattern coated on the electrode sheet.

2. A wireless keyboard comprising:

an antenna wire for radiating a keyboard output signal into the air from a transmitting section, or radiating the keyboard output signal into the air from the transmitting section and receiving a keyboard input signal radiated into the air at a receiving section;

an insulating electrode sheet having electrically conductive patterns coated thereon, each pattern constituting a part of a switch which is turned on by the depression of each key; and

a keyboard casing,

wherein the antenna wire is formed of an electrically conductive pattern coated on an insulating sheet disposed adjacent to the electrode sheet.