WikiPatents - Community Patent Review
Create Free Account  |  License or Sell Your Patent  |  WikiPatents Marketplace  |  WikiPatents Blog
Username:  Password:  
    
Advanced Search
Integrated circuit I/O using a high performance bus interface    
United States Patent5473575   
Link to this pagehttp://www.wikipatents.com/5473575.html
Inventor(s)Farmwald; Michael (Berkeley, CA); Horowitz; Mark (Palo Alto, CA)
AbstractThe present invention includes a memory subsystem comprising at least two semiconductor devices, including at least one memory device, connected to a bus, where the bus includes a plurality of bus lines for carrying substantially all address, data and control information needed by said memory devices, where the control information includes device-select information and the bus has substantially fewer bus lines than the number of bits in a single address, and the bus carries device-select information without the need for separate device-select lines connected directly to individual devices. The present invention also includes a protocol for master and slave devices to communicate on the bus and for registers in each device to differentiate each device and also bus requests to be directed to a single or to all devices. The present invention includes modifications to prior-art devices to allow them to implement the new features of this invention. In a preferred implementation, 8 bus data lines and an AddressValid bus line carry address, data and control information for memory addresses up to 40 bits wide.
   














 Title Information Submit all comments and votes
 
Patent Text Patent PDF Print Page Summary File History
Plain text PDF images Print Summary File History
Drawing from US Patent 5473575
Integrated circuit I/O using a high performance bus interface - US Patent 5473575 Drawing
Integrated circuit I/O using a high performance bus interface
Inventor     Farmwald; Michael (Berkeley, CA); Horowitz; Mark (Palo Alto, CA)
Owner/Assignee     Rambus, Inc. (Mountain View, CA)
Patent assignment
All assignments
Publication Date     December 5, 1995
Application Number     07/847,532
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     March 5, 1992
US Classification     365/230.06 327/379 327/391 327/437 365/190 365/191 365/198
Int'l Classification     H03K 019/003
Examiner     Nguyen; Viet Q.
Assistant Examiner    
Attorney/Law Firm     Blakely, Sokoloff, Taylor & Zafman
Address
Parent Case     This is a divisional of application Ser. No. 07/510,898, filed Apr. 18, 1990 now abandoned.
Priority Data    
USPTO Field of Search     365/230.01 365/230.06 365/230.08 365/190 365/191 365/198 365/189.01 327/379 327/391 327/437
Patent Tags     integrated circuit i/o high performance bus interface
   
Enter a comma (,) or semicolon (;) between multiple tag words/phrases.
Describe this patent:
 Amusing   
 Clever   
 Complex   
 Efficient   
 Historic   
 Important   
 Innovative   
 Interesting   
 Practical   
 Simple   
[no votes]
Patent WIKI

Share information and news about this patent, including information and news about the technology, inventors, company, ligation and licensing.

 References Submit all comments and votes
 
*references marked with an asterisk below are user-added references
 U.S. References
 
Add a new US reference:  
ReferenceRelevancyCommentsReferenceRelevancyComments
3821715



[0 after 0 votes]
3924241



[0 after 0 votes]
5266848
Nakagome
326/62
Nov,1993

[0 after 0 votes]
5257232
Dhong
365/203
Oct,1993

[0 after 0 votes]
5254883
Horowitz
326/30
Oct,1993

[0 after 0 votes]
5198995
Dennard
365/149
Mar,1993

[0 after 0 votes]
5150325
Yanagisawa
365/177
Sep,1992

[0 after 0 votes]
5023488
Gunning
326/86
Jun,1991

[0 after 0 votes]
4975763
Baudouin
257/696
Dec,1990

[0 after 0 votes]
4933835
Sachs
711/123
Jun,1990

[0 after 0 votes]
4860198
Takenaka
710/307
Aug,1989

[0 after 0 votes]
4837682
Culler
710/114
Jun,1989

[0 after 0 votes]
4818985
Ikeda
340/825.5
Apr,1989

[0 after 0 votes]
4811202
Schabowski
710/307
Mar,1989

[0 after 0 votes]
4785394
Fischer
710/114
Nov,1988

[0 after 0 votes]
4779089
Theus
340/825.5
Oct,1988

[0 after 0 votes]
4770640
Walter
439/69
Sep,1988

[0 after 0 votes]
4764846
Go
361/708
Aug,1988

[0 after 0 votes]
4745548
Blahut

May,1988

[0 after 0 votes]
4719627
Peterson
714/764
Jan,1988

[0 after 0 votes]
4706166
Go
361/771
Nov,1987

[0 after 0 votes]
4654655
Kowalski
340/825.5
Mar,1987

[0 after 0 votes]
4649516
Chung
365/230.05
Mar,1987

[0 after 0 votes]
4649511
Gdula
711/106
Mar,1987

[0 after 0 votes]
4646270
Voss
365/189.02
Feb,1987

[0 after 0 votes]
4630193
Kris
713/502
Dec,1986

[0 after 0 votes]
4595923
McFarland, Jr.
340/825.52
Jun,1986

[0 after 0 votes]
4584672
Schutz
365/203
Apr,1986

[0 after 0 votes]
4519034
Smith
710/61
May,1985

[0 after 0 votes]
4500905
Shibata
257/74
Feb,1985

[0 after 0 votes]
4488218
Grimes
710/116
Dec,1984

[0 after 0 votes]
4481625
Roberts
370/464
Nov,1984

[0 after 0 votes]
4470114
Gerhold
710/111
Sep,1984

[0 after 0 votes]
4468738
Hansen
710/111
Aug,1984

[0 after 0 votes]
4449207
Kung
365/189.02
May,1984

[0 after 0 votes]
4385350
Hansen
710/119
May,1983

[0 after 0 votes]
4373183
Means
710/124
Feb,1983

[0 after 0 votes]
4355376
Gould
365/200
Oct,1982

[0 after 0 votes]
4315308
Jackson
710/33
Feb,1982

[0 after 0 votes]
4306298
McElroy
711/211
Dec,1981

[0 after 0 votes]
4286321
Baker
710/104
Aug,1981

[0 after 0 votes]
4249247
Patel
711/106
Feb,1981

[0 after 0 votes]
4247817
Heller
327/63
Jan,1981

[0 after 0 votes]
4205373
Shah
710/306
May,1980

[0 after 0 votes]
4191996
Chesley
714/30
Mar,1980

[0 after 0 votes]
4099231
Kotok
711/168
Jul,1978

[0 after 0 votes]
4038648
Chesley
365/201
Jul,1977

[0 after 0 votes]
4007452
Hoff, Jr.
365/63
Feb,1977

[0 after 0 votes]
3983537
Parsons
711/200
Sep,1976

[0 after 0 votes]
3975714
Weber
711/218
Aug,1976

[0 after 0 votes]
3972028
Weber
711/220
Jul,1976

[0 after 0 votes]
3969706
Proebsting
365/189.02
Jul,1976

[0 after 0 votes]
3882470
Hunter
365/200
May,1975

[0 after 0 votes]
3771145
Wiener
365/240
Nov,1973

[0 after 0 votes]
3758761
Henrion
714/3
Sep,1973

[0 after 0 votes]
3740723
Beausoleil
711/117
Jun,1973

[0 after 0 votes]
4443864
McElroy
710/307
Dec,1969

[0 after 0 votes]
4333142
Chesley
716/4
Dec,1969

[0 after 0 votes]
 Foreign References
 Other References
 Market Review Submit all comments and votes
   
Market Size
Estimate the gross annual revenues of the relevant market sector:
> $10B
$5B - $10B
$2B - $5B
$500M - $2B
$100M - $500M
$10M - $100M
$1M - $10M
$500K - $1M
$100K - $500K
< $100K
[No votes]
$0
 
$0   $2.5B   $5B   $7.5B   $10B
Market Share
Estimate the percentage of the relevant market sector this invention will capture:
75% - 100%
50% - 74.99%
25% - 49.99%
10 - 24.99%
5 - 9.99%
2 - 4.99%
1 - 1.99%
< 1%
[No votes]
0.0%
 
0%   25%   50%   75%   100%
Reasonable Royalty
What percentage of gross sales should the inventor or assignee be paid?
75% - 100%
50% - 74.99%
25% - 49.99%
10 - 24.99%
5 - 9.99%
2 - 4.99%
1 - 1.99%
< 1%
[No votes]
0.0%
 
0%   25%   50%   75%   100%
Public's "Guesstimation" of Royalty Value
Market SizeN/A[No votes]
xMarket ShareN/A[No votes]
xReasonable RoyaltyN/A[No votes]

N/A

License Availablity
If you are NOT the owner or assignee, answer here:
Yes, license is available for purchase

No, license is not currently available



[No votes]
License Availablity
If you ARE the owner or assignee, answer here:
Yes, license is available for purchase

No, license is not currently available



[No votes]
Competitive Advantage
Does this invention have a significant competitive advantage over similar technologies?
Yes

No



[No votes]
Most helpful competitive advantage comment
[No comments]

Commercial Alternatives
Are there viable commercial alternatives for this invention?
Yes

No



[No votes]
Most helpful commercial alternative comment
[No comments]