US5111452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
LAN controller
Assignee: Toshiba Corp
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Filing: 1990-10-03
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Granted: 1992-05-05
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Expires: 2010-10-03
Abstract
Abstract A LAN controller includes a memory device for storing data being received and transmitted by a microprocessor, data relating to data identification of said receiving and transmitting data, and data allowing/prohibiting the communication of said receiving and transmitting data, respectively, and a controller for automatically storing data allowing/prohibiting the communication of said receiving and transmitting data to said memory device when data relating to data identification of said receiving and transmitting data is stored into said memory device.
Inventors
- 👤 Yuriko Kyuma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:16
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/28; H04L9/00; H04L9/40
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
70 words
A LAN controller, comprising: a memory device for storing first data being received and transmitted by a microprocessor, second data relating to data identification of said first data, and third data allowing/prohibiting the communication of said first data, respectively; and a controller for causing said memory device to automatically store third data allowing/prohibiting the communication of said first data only when said second data is stored into said memory device.
Claim 2
Dependent Claim
70 words
A LAN controller, comprising: a memory device for storing first data being received and transmitted by a microprocessor, second data relating to data identification of said first data, and third data allowing/prohibiting the communication of said first data, respectively; and a controller for causing said memory device to automatically store third data allowing/prohibiting the communication of said first data only when said second data is stored into said memory device.
Claim 3
Dependent Claim
26 words
A LAN controller according to claim 1, wherein said data relating to identification of said first data is a node address or a name of data.
Claim 4
Dependent Claim
39 words
A LAN controller according to claim 1, further comprising: a microprocessor input/output device; a network input/output device; and an arithmetic unit which can convert or arithmetically operate data input from said microprocessor input/output device or said network input/output device.
Claim 5
Dependent Claim
15 words
A LAN controller according to claim 3, wherein said arithmetic unit comprises a high-speed multiplier.
Claim 6
Dependent Claim
14 words
A LAN controller according to claim 3, wherein said arithmetic unit comprises a divider.
Claim 7
Dependent Claim
16 words
A LAN controller according to claim 3, wherein said arithmetic unit comprises a floating point processor.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-05 | 1995-11-04 | 1996-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-05 | 1999-11-04 | 2000-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-05 | 2003-11-04 | 2004-05-05 | $7700.00 | Window Closed / Lapsed |