The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 2005
Filed:
Dec. 08, 1999
Kazuhisa Terasaki, Toyonaka, JP;
Takeshi Ohyama, Tokyo, JP;
Akihiro Yamada, Tokyo, JP;
Gontaro Kitazumi, Tokyo, JP;
Masanori Naritomi, Urayasu, JP;
Kenji Nakamura, Mitaka, JP;
Kazuhisa Terasaki, Toyonaka, JP;
Takeshi Ohyama, Tokyo, JP;
Akihiro Yamada, Tokyo, JP;
Gontaro Kitazumi, Tokyo, JP;
Masanori Naritomi, Urayasu, JP;
Kenji Nakamura, Mitaka, JP;
Link Evolution Co., Ltd., Tokyo, JP;
Abstract
A key-board type input mechanism suitable for inputting large quantity of data is provided to a portable information technology device having a pen-input type display device. A keyboard (or) of the present invention comprises a key top panel portion (or) on which a plurality of input key portions (or) that are pressed down when carrying out a key input are integrally formed, a coordinate position information generating portion () and contact portions (or) for changing loads generated by pressing each input key portion of the key top panel portion down into a vertical load, a load distribution portion (or) for distributing unnecessary loads other than the vertical load changed by the coordinate position information generating portion and the contact portions, by deformation under a pressure. The key top panel portion, coordinate position information generating portion, contact portion, and load distribution portion are layered.