Patent Number: 6,297,726

Title: Radio paging receiver

Abstract: A radio paging receiver operates in two modes. In a first mode, the pager activates light and sound alarms message regardless of who the caller is. In a second, password select mode, the pager sounds the light and sound alarms only for callers who have transmitted a password with their messages to the pager. In password select mode, the pager also allows a user to discriminate among those callers who have the password, only activating both the light and sound alarm when preselected callers are detected as transmitting a message to the pager. To make this possible, the pager uses a caller's telephone number as a password. If a message from a caller who is not selected is received, only the light alarm is activated and the message is displayed. The sound alarm is not activated. Selection of callers is made in accordance with a stored and displayed telephone directory, for example, with a stylus pen. The pager also allows caller selection to be made based on certain categories of callers or based on the time of day.

Inventors: Yamazaki; Yasuyuki (Shizuoka, JP)

Assignee: NEC Corporation

International Classification: G08B 5/22 (20060101); G08B 005/22 ()

Expiration Date: 10/02/2018