US4591853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paging receiver with a decoder-P-ROM
Assignee: NEC Corp
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Filing: 1982-11-10
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Granted: 1986-05-27
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Expires: 2002-11-10
Abstract
Abstract A paging receiver comprises a P-ROM with a built-in decoder for storage of N kinds of information. The stored contents of the P-ROM are read out in series in response to a clock frequency equal to or greater than N times the clock corresponding to the data speed of a received signal. Substantially simultaneous comparison of N kinds of the read-out data with the received signal is effected to determine whether or not the received signal is a paging signal for the own receiver.
Inventors
- 👤 Toshihiro Mori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:47
CPC Classifications
H; H04; H04W; H04W68/00; H04W68/02; H04W88/00; H04W88/02; H04W88/022; H04W88/025; H04W88/026
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
106 words
A paging receiver comprising: a programmable read only memory (P-ROM) for storing bit information which is stored with N, N being an integer greater than 1, kinds of information and having a built-in decoder; means for sequentially reading out the contents stored in said P-ROM in response to a clock frequency which is N times or more the frequency of a clock corresponding to the bit rate of a received signal; and means for effecting substantially simultaneous comparison of the read out N kinds of stored contents with the received signal to determine whether the received signal is a paging signal assigned to said paging receiver.
Claim 2
Dependent Claim
106 words
A paging receiver comprising: a programmable read only memory (P-ROM) for storing bit information which is stored with N, N being an integer greater than 1, kinds of information and having a built-in decoder; means for sequentially reading out the contents stored in said P-ROM in response to a clock frequency which is N times or more the frequency of a clock corresponding to the bit rate of a received signal; and means for effecting substantially simultaneous comparison of the read out N kinds of stored contents with the received signal to determine whether the received signal is a paging signal assigned to said paging receiver.
Claim 3
Dependent Claim
39 words
A paging receiver according to claim 1 wherein bits in the respective N kinds of stored information are compared with corresponding bits in the received signal within one bit time period of the data represented by said received signal.
Claim 4
Dependent Claim
91 words
A paging receiver according to claim 1 wherein said built in decoder comprises a rearrangement decoder which rearranges the format of the N kinds of information stored in the P-ROM in m-bit format, m being a positive number, like A1·A2 . . . Am, B1·B2 . . . Bm and X1·X2 . . . Xm, such that the corresponding bit units of the respective kinds of information output by said decoder are grouped like A1·B1 . . . X1·A2·B2 . . . X2 . . . Am·Bm . . . Xm.
Claim 5
Dependent Claim
77 words
A paging receiver according to claim 3 wherein said rearrangement decoder comprises a first counter responsive to the N times frequency clock for accessing the P-ROM, a second counter responsive to an overflow of said first counter to produce m outputs, AND gates connected to receive the m outputs of said second counter and m outputs of the P-ROM, and an OR gate responsive to the output of said AND gates to produce a sequential data output.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-26 | 1989-11-25 | 1990-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-26 | 1993-11-25 | 1994-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-26 | 1997-11-25 | 1998-05-27 | $7700.00 | Window Closed / Lapsed |