Patent US5493280A successfully refreshed from Google Patents.
US5493280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio paging receiver
Assignee: NEC Corp
•
Filing: 1993-10-22
•
Granted: 1996-02-20
•
Expires: 2013-10-22
Abstract
Abstract A radio paging receiver enables an user of the receiver later to see a received message even when an alert stopping operation or message confirmation operation is first executed in an environment too dark to see the received message. The receiver has a photosensor for detecting whether a display environment is light or dark. If the alert stopping operation is executed in the dark condition, the received message is stored in a memory as an unconfirmed message, so that the user later can see and read the received message in a light condition after a change of the environment. In addition, when the environment is changed from a dark condition to a light condition, if an unconfirmed message exists in the memory, the receiver alerts the user.
Inventors
- 👤 Hiroaki Shibayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:15
CPC Classifications
G; G08; G08B; G08B5/00; G08B5/22; G08B5/222; G08B5/223; G08B5/224; G08B5/225
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
129 words
A radio paging receiver comprising: receiving means for receiving a radio signal containing a message signal; first light/dark detecting means for detecting whether a message display environment is light or dark; alert control means for generating an alert signal when the receiver is paged by a received radio signal; alerting means, responsive to the alert signal, for generating an alert for a user of the receiver; alert stopping means for stopping an alert generated by the alerting means, when an alert stopping operation is executed by the user during the alert; and message storing means for storing, if said light/dark detecting means detects a dark condition when the alert stopping operation executed, the received message in a memory as an unconfirmed message having not been confirmed by the user.
Claim 2
Dependent Claim
129 words
A radio paging receiver comprising: receiving means for receiving a radio signal containing a message signal; first light/dark detecting means for detecting whether a message display environment is light or dark; alert control means for generating an alert signal when the receiver is paged by a received radio signal; alerting means, responsive to the alert signal, for generating an alert for a user of the receiver; alert stopping means for stopping an alert generated by the alerting means, when an alert stopping operation is executed by the user during the alert; and message storing means for storing, if said light/dark detecting means detects a dark condition when the alert stopping operation executed, the received message in a memory as an unconfirmed message having not been confirmed by the user.
Claim 3
Dependent Claim
18 words
The radio paging receiver as claimed in claim 1, wherein said first light/dark detecting means comprises a photosensor.
Claim 4
Dependent Claim
20 words
The radio paging receiver as claimed in claim 2, further comprising a lid for covering the photosensor and a display.
Claim 5
Dependent Claim
27 words
The radio paging receiver as claimed in claim 3, further comprising second light/dark detecting means for detecting whether a environment of the receiver is light or dark.
Claim 6
Dependent Claim
45 words
The radio paging receiver as claimed in claim 4, wherein said alerting means generates the alert when said second light/dark detecting means detects a change of the environment from the dark condition to a light condition, if the unconfirmed message is stored in the memory.
Claim 7
Dependent Claim
25 words
The radio paging receiver as claimed in claim 5, wherein said second light/dark detecting means comprises a photosensor which is not covered by said lid.
Claim 8
Dependent Claim
89 words
A radio paging receiver comprising: alerting means for reporting the presence of a received message; message distinguishing means for determining whether a received message has been confirmed by an operation of an user of the receiver; light/dark detecting means for determining whether a message display environment is light or dark; and message storing means for storing, if said light/dark detecting means detects a dark condition when the operation for confirming the received message is executed, the received message in a memory as an unconfirmed message having not been confirmed.
Claim 9
Dependent Claim
89 words
A radio paging receiver comprising: alerting means for reporting the presence of a received message; message distinguishing means for determining whether a received message has been confirmed by an operation of an user of the receiver; light/dark detecting means for determining whether a message display environment is light or dark; and message storing means for storing, if said light/dark detecting means detects a dark condition when the operation for confirming the received message is executed, the received message in a memory as an unconfirmed message having not been confirmed.
Claim 10
Dependent Claim
45 words
The radio paging receiver as claimed in claim 7, wherein said alerting means executes an alert operation when said light/dark detecting means detects a change of the environment from the dark condition to a light condition, if the unconfirmed message is stored in the memory.
Claim 11
Independent Claim
97 words
A method for controlling a radio paging receiver, the method comprising the steps of: (a) receiving a message to be displayed at the receiver; (b) alerting an user of the receiver of said receiving; (c) detecting an operation for stopping said alerting; (d) detecting whether a message display environment is light or dark at the time of execution of step (c); (e) displaying the received message if a light condition is detected in step (d); and (f) storing the received message as an unconfirmed message in a memory if a dark condition is detected in step (d).
Claim 12
Independent Claim
97 words
A method for controlling a radio paging receiver, the method comprising the steps of: (a) receiving a message to be displayed at the receiver; (b) alerting an user of the receiver of said receiving; (c) detecting an operation for stopping said alerting; (d) detecting whether a message display environment is light or dark at the time of execution of step (c); (e) displaying the received message if a light condition is detected in step (d); and (f) storing the received message as an unconfirmed message in a memory if a dark condition is detected in step (d).
Claim 13
Dependent Claim
68 words
The method for controlling a radio paging receiver as claimed in claim 9, the method further comprising: (g) detecting whether a environment of the receiver is light or dark; (h) detecting a change in the environment in step (g) from a dark condition to a light condition; and (i) alerting the user if said change is detected in step (h) when the unconfirmed message exists in the memory.
Claim 14
Dependent Claim
57 words
A radio paging receiver comprising: light/dark detecting means for detecting whether a message display environment is light or dark; and generating means for generating a signal when the light/dark detecting means detects a change from a dark display environment to a light display environment and a message unconfirmed by a user has been stored in a memory.
Claim 15
Dependent Claim
57 words
A radio paging receiver comprising: light/dark detecting means for detecting whether a message display environment is light or dark; and generating means for generating a signal when the light/dark detecting means detects a change from a dark display environment to a light display environment and a message unconfirmed by a user has been stored in a memory.
Claim 16
Dependent Claim
24 words
The radio paging receiver as claimed in claim 11, further comprising alerting means, responsive to the signal, for generating an alert for the user.
References Cited (Backward Citations)
US3742481A
Cited
EP0135928A2
Cited
EP0168821A1
Cited
US4754275A
Cited
GB2199435A
Cited
US4868563A
Cited
US5077551A
Cited
US5239295A
Cited
US5321963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-02-19 | 1999-08-21 | 2000-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-19 | 2003-08-21 | 2004-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-19 | 2007-08-21 | 2008-02-20 | $7700.00 | Window Closed / Lapsed |