Display unit for selective calling receiver

Details Display unit for selective calling receiver Display unit for selective calling receiver

1997-06-16

2001-09-11

Horabik, Michael (Department: 2635)

Communications: electrical

Selective

Having indication or alarm

C379S396000, C379S376020, C455S574000, C345S102000

Reexamination Certificate

active

06288628

ABSTRACT:

BACKGROUND OF THE INVENTION
This invention relates to a display unit in a selective calling receiver such as a pager (hereinafter referred to as “a selective calling receiver display unit”, when applicable) which has a function of displaying messages etc.
Recently, in a selective calling receiver, its power consumption has been greatly reduced; that is, an improvement of current decreasing means has been a problem to be solved. In this connection, a selective calling receiver having a timer or switch has been known in the art. In the case of a selective calling receiver having a timer, as shown in a flow chart of
FIG. 4A
, when the screen display is turned on (signal arrival time), the timer is started, and when a time-out occurs, the timer operates to turn off the screen display. On the other hand, in the case of a selective calling receiver having a switch, as shown in a flow chart of
FIG. 4B
, the screen display is kept turned off as long as the switch is depressed, and upon arrival of a signal, the user turns on the switch, and after the signal has been read, the switch is turned off.
The above-described conventional selective calling receiver having a timer or switch suffers from the following problems. The user must turn off the screen display. In addition, although it is necessary for the user to watch the screen display, the timer is operated to turn off the screen display.
SUMMARY OF THE INVENTION
Accordingly, an object of the invention is to eliminate the above-described difficulties accompanying a conventional selective calling receiver.
More specifically, an object of the invention is to provider a selective calling receiver display unit in which the screen display is automatically turned on and off according to the necessity for screen display which is based on the use of the selective calling receiver.
The foregoing object of the invention has been achieved by the provision of a selective calling receiver display unit which has a displaying function, which, according to the invention, comprises: photo-detecting means for detecting a quantity of light of an incident light beam; and display processing means for processing the display action of a display section, the display processing means controlling the on-off operation of a screen display of the display section according to the quantity of light detected by the photo-detecting means.
With the selective calling receiver display unit, the screen display is automatically turned on and off according to the necessity for screen display which is based on the use of the selective calling receiver.


REFERENCES:
patent: 4281365 (1981-07-01), Elving et al.
patent: 4644350 (1987-02-01), Ishii
patent: 4713659 (1987-12-01), Oyagi et al.
patent: 4841164 (1989-06-01), Basso
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patent: 5570421 (1996-10-01), Morishima
patent: 5635915 (1997-06-01), Gray
patent: 5933089 (1999-08-01), Katada
patent: 57-103087 (1982-09-01), None
patent: 05-167506 (1993-07-01), None

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