Computer graphics processing and selective visual display system – Display peripheral interface input device – Including keyboard
Reexamination Certificate
2005-04-05
2005-04-05
Chang, Kent (Department: 2673)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Including keyboard
C345S173000, C400S472000, C341S024000
Reexamination Certificate
active
06876354
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 (33or35) of the present invention comprises a key top panel portion (12or17) on which a plurality of input key portions (12aor18) that are pressed down when carrying out a key input are integrally formed, a coordinate position information generating portion (13) and contact portions (16or19) 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 (14or20) 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.
REFERENCES:
patent: 4560844 (1985-12-01), Takamura et al.
patent: 4977298 (1990-12-01), Fujiyama
patent: 5053585 (1991-10-01), Yaniger
patent: 5907375 (1999-05-01), Nishikawa et al.
patent: 5967898 (1999-10-01), Takasaka et al.
patent: 6322449 (2001-11-01), Klitsner et al.
patent: 6362953 (2002-03-01), Ohlwine et al.
patent: 6388660 (2002-05-01), Manser et al.
patent: 62-52622 (1987-03-01), None
patent: 6-502507 (1994-03-01), None
patent: 9-244815 (1997-09-01), None
patent: 10-91305 (1998-04-01), None
patent: 10-233142 (1998-09-01), None
patent: 11-65751 (1999-03-01), None
Kitazumi Gontaro
Nakamura Kenji
Naritomi Masanori
Ohyama Takeshi
Terasaki Kazuhisa
Chang Kent
Link Evolution Co., Ltd.
Staas & Halsey , LLP
LandOfFree
Keyboard type input device and portable information processor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Keyboard type input device and portable information processor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Keyboard type input device and portable information processor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3425252