Title:
RADIO PORTABLE TERMINAL
Document Type and Number:
Japanese Patent JP3149866
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress the occurrence of noise in a radio data reception period and to prevent the deterioration of reception sensitivity by delaying a liquid crystal AC signal when the radio data reception period is overlapped with the output period of the liquid crystal AC signal.
SOLUTION: An LCD driver 5 executes driving for displaying display data from an LCD controller 3 to LCD 6. When the display of LCD 6 terminates by one line, a horizontal scanning signal for moving display to a next is outputted to the LCD driver 5. When display terminates by one frame, a frame signal for moving display to the next frame is outputted. For preventing liquid crystal burning, a liquid crystal AC signal being a timing signal for inverting the angle of a liquid crystal is outputted to the LCD driver 5. The LCD controller 3 does not output the liquid crystal signal until the reception of radio data terminates when timing when the liquid crystal AC signal is outputted and a radio data reception period become simultaneous.
Inventors:
Kenichi Yoshida
Application Number:
JP35193398A
Publication Date:
March 26, 2001
Filing Date:
December 10, 1998
Export Citation:
Assignee:
NEC
International Classes:
G09G3/36; G09G3/20; H04B1/08; H04B15/04; H04M1/00; H04W24/04; H04W88/02; (IPC1-7): H04Q7/14; G09G3/20; H04B1/08
Domestic Patent References:
| JP2141034A | ||||
| JP47921A |
Attorney, Agent or Firm:
Nobuo Takahashi (3 outside)