US5941973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bus control system incorporating the coupling of two split-transaction busses of different hierarchy
Assignee: Hitachi Ltd
•
Filing: 1998-12-01
•
Granted: 1999-08-24
•
Expires: 2018-12-01
Abstract
Abstract In a data processing system, a plurality of modules connected to a system bus thereof are assigned with identifiers. When a source module initiates a split read access to another module, the source module sends an address of the access destination module and an identifier of the source module. When sending a response to the source module, the destination module returns response data and the identifier of the source module thereto. Checking the identifier from the destination module, the source module determines the response data returned as a response to the initiated access.
Inventors
- 👤 Nobukazu Kondo
- 👤 Seiji Kaneko
- 👤 Koichi Okazawa
- 👤 Hideaki Gemma
- 👤 Tetsuya Mochida
- 👤 Takehisa Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:20
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/38; G06F13/40; G06F13/4004; G06F13/4027; G06F13/14; G06F13/36
Claims Analysis
Total Claims: 60
Claim 1
Independent Claim
73 words
An information processing system comprising: a processor; a first bus operatively connected to said processor, said first bus being capable of a first bus protocol which is a split transfer protocol; an I/O device; a second bus operatively connected to said I/O device, said second bus being capable of a second bus protocol which is a split transfer protocol; and a bus adapter for hierarchically connecting said first bus and said second bus.
Claim 2
Dependent Claim
73 words
An information processing system comprising: a processor; a first bus operatively connected to said processor, said first bus being capable of a first bus protocol which is a split transfer protocol; an I/O device; a second bus operatively connected to said I/O device, said second bus being capable of a second bus protocol which is a split transfer protocol; and a bus adapter for hierarchically connecting said first bus and said second bus.
Claim 3
Dependent Claim
24 words
The information processing system according to claim 1, wherein said first bus and second bus transfer data from said I/O device to said processor.
Claim 4
Dependent Claim
27 words
The information processing system according to claim 1, wherein said bus adapter is operatively connected to a third bus which is operatively connected to a main memory.
Claim 5
Dependent Claim
74 words
An information processing system comprising: a processor; a first bus coupled to said processor, said first bus being capable of a first bus protocol which is a split transfer protocol; a plurality of I/O devices; a second bus coupled to said I/O devices, said second bus being capable of a second bus protocol which is a split transfer protocol; and a bus adapter for hierarchically coupling said processor and one of said I/O devices.
Claim 6
Dependent Claim
74 words
An information processing system comprising: a processor; a first bus coupled to said processor, said first bus being capable of a first bus protocol which is a split transfer protocol; a plurality of I/O devices; a second bus coupled to said I/O devices, said second bus being capable of a second bus protocol which is a split transfer protocol; and a bus adapter for hierarchically coupling said processor and one of said I/O devices.
Claim 7
Dependent Claim
27 words
The information processing system according to claim 4, wherein said first bus and said second bus transfer data from on of said I/O devices to said processor.
Claim 8
Dependent Claim
25 words
The information processing system according to claim 4, wherein said bus adapter is coupled to a third bus which is coupled to a main memory.
Claim 9
Dependent Claim
73 words
An information processing system comprising: a first module; a first bus coupled to said first module, said first bus being capable of a first bus protocol which is a split transfer protocol; a second module; a second bus coupled to said second module, said second bus being capable of a second bus protocol which is a split transfer protocol; and a bus adapter for hierarchically coupling said first bus and said second bus.
Claim 10
Dependent Claim
73 words
An information processing system comprising: a first module; a first bus coupled to said first module, said first bus being capable of a first bus protocol which is a split transfer protocol; a second module; a second bus coupled to said second module, said second bus being capable of a second bus protocol which is a split transfer protocol; and a bus adapter for hierarchically coupling said first bus and said second bus.
Claim 11
Dependent Claim
26 words
The information processing system according to claim 7, wherein said first bus and said second bus transfer data from said second module to said first module.
Claim 12
Dependent Claim
25 words
The information processing system according to claim 7, wherein said bus adapter is coupled to a third bus which is coupled to a main memory.
Claim 13
Dependent Claim
79 words
An information processing system comprising: a first module; a first bus operatively connected to said first module, said first bus being capable of a first bus protocol which is a split transfer protocol; a plurality of second modules; a second bus operatively connected to said second modules, said second bus being capable of a second bus protocol which is a split transfer protocol; and a bus adapter for hierarchically coupling said first module and one of said second modules.
Claim 14
Dependent Claim
79 words
An information processing system comprising: a first module; a first bus operatively connected to said first module, said first bus being capable of a first bus protocol which is a split transfer protocol; a plurality of second modules; a second bus operatively connected to said second modules, said second bus being capable of a second bus protocol which is a split transfer protocol; and a bus adapter for hierarchically coupling said first module and one of said second modules.
Claim 15
Dependent Claim
26 words
The information processing system according to claim 10, wherein said first bus and said second bus transfer data from said second module to said first module.
Claim 16
Dependent Claim
27 words
The information processing system according to claim 10, wherein said bus adapter is operatively connected to a third bus which is operatively connected to a main memory.
Claim 17
Dependent Claim
83 words
An information processing system comprising: a processor; a first bus operatively connected to said processor, said first bus being capable of a first bus protocol which is a split transfer protocol; an I/O device; a second bus operatively connected to said I/O device, said second bus being capable of a second bus protocol which is a split transfer protocol; and a bus adapter for hierarchically connecting said first bus and said second bus and transferring data from said I/O device to said processor.
Claim 18
Dependent Claim
83 words
An information processing system comprising: a processor; a first bus operatively connected to said processor, said first bus being capable of a first bus protocol which is a split transfer protocol; an I/O device; a second bus operatively connected to said I/O device, said second bus being capable of a second bus protocol which is a split transfer protocol; and a bus adapter for hierarchically connecting said first bus and said second bus and transferring data from said I/O device to said processor.
Claim 19
Dependent Claim
25 words
The information processing system according to claim 13, wherein said first bus and said second bus transfer data from said I/O device to said processor.
Claim 20
Dependent Claim
27 words
The information processing system according to claim 13, wherein said bus adapter is operatively connected to a third bus which is operatively connected to a main memory.
Claim 21
Dependent Claim
60 words
An information processing system comprising: a processor; a first bus operatively connected to said processor, said first bus employing a first bus protocol which is a split transfer protocol; a second bus, said second bus employing a second bus protocol which is a split transfer protocol; and a bus adapter for hierarchically connecting said first bus and said second bus.
Claim 22
Dependent Claim
60 words
An information processing system comprising: a processor; a first bus operatively connected to said processor, said first bus employing a first bus protocol which is a split transfer protocol; a second bus, said second bus employing a second bus protocol which is a split transfer protocol; and a bus adapter for hierarchically connecting said first bus and said second bus.
Claim 23
Dependent Claim
27 words
The information processing system according to claim 16, wherein said bus adapter is operatively connected to a third bus which is operatively connected to a main memory.
Claim 24
Dependent Claim
19 words
The information processing system according to claim 16, further comprising: an I/O device operatively connected to said second bus.
Claim 25
Dependent Claim
24 words
The information processing system according to claim 16, further comprising: a plurality of I/O devices, each of which operatively connected to said second bus.
Claim 26
Dependent Claim
63 words
An information processing system comprising: a source module; a first bus coupled to said source module, said first bus capable of executing a first split transfer protocol; a destination module; a second bus coupled to said destination module, said second bus capable of executing a second split transfer protocol; and a bus adapter for hierarchically coupling said first bus and said second bus.
Claim 27
Dependent Claim
63 words
An information processing system comprising: a source module; a first bus coupled to said source module, said first bus capable of executing a first split transfer protocol; a destination module; a second bus coupled to said destination module, said second bus capable of executing a second split transfer protocol; and a bus adapter for hierarchically coupling said first bus and said second bus.
Claim 28
Dependent Claim
15 words
The information processing system according to claim 20, wherein said source module is a processor.
Claim 29
Dependent Claim
16 words
The information processing system according to claim 20, wherein said destination module is an I/O device.
Claim 30
Dependent Claim
68 words
An information processing system comprising: a source device; a first bus operatively coupled to said source device, said first bus capable of executing a first split bus transfer protocol; a destination device; a second bus operatively coupled to said destination device, said second bus capable of executing a second split bus transfer protocol; and a bus adapter circuit for hierarchically coupling said first bus and said second bus.
Claim 31
Dependent Claim
68 words
An information processing system comprising: a source device; a first bus operatively coupled to said source device, said first bus capable of executing a first split bus transfer protocol; a destination device; a second bus operatively coupled to said destination device, said second bus capable of executing a second split bus transfer protocol; and a bus adapter circuit for hierarchically coupling said first bus and said second bus.
Claim 32
Dependent Claim
30 words
The information processing system according to claim 23, wherein said source device reads data from said destination device via said first bus, said bus adapter circuit and said second bus.
Claim 33
Dependent Claim
15 words
The information processing system according to claim 24, wherein said source device is a processor.
Claim 34
Dependent Claim
16 words
The information processing system according to claim 24, wherein said destination device is an I/O device.
Claim 35
Dependent Claim
30 words
The information processing system according to claim 24, further comprising: a third bus operatively coupled to said bus adapter circuit; and a main memory operatively coupled to said third bus.
Claim 36
Dependent Claim
61 words
An information processing system comprising: a source module; a first bus coupled to said source module, said first bus capable of employing a first split transfer protocol; a second bus to be coupled to a destination module, said second bus capable of employing a second split transfer protocol; and an adapter for hierarchically coupling said first bus and said second bus.
Claim 37
Dependent Claim
61 words
An information processing system comprising: a source module; a first bus coupled to said source module, said first bus capable of employing a first split transfer protocol; a second bus to be coupled to a destination module, said second bus capable of employing a second split transfer protocol; and an adapter for hierarchically coupling said first bus and said second bus.
Claim 38
Dependent Claim
23 words
The information processing system according to claim 28, wherein said source module is a processor, and said destination module is an I/O device.
Claim 39
Dependent Claim
28 words
The information processing system according to claim 28, further comprising: a third bus coupled to said adapter, said third bus being to be coupled to a main memory.
Claim 40
Dependent Claim
63 words
An information processing system comprising: a source module; a first bus coupled to said source module, said first bus capable of executing a first split transfer protocol; a destination module; a second bus coupled to said destination module, said second bus capable of executing a second split transfer protocol; and a bus adapter for hierarchically coupling said first bus and said second bus.
Claim 41
Dependent Claim
63 words
An information processing system comprising: a source module; a first bus coupled to said source module, said first bus capable of executing a first split transfer protocol; a destination module; a second bus coupled to said destination module, said second bus capable of executing a second split transfer protocol; and a bus adapter for hierarchically coupling said first bus and said second bus.
Claim 42
Dependent Claim
15 words
The information processing system according to claim 31, wherein said source module is a processor.
Claim 43
Dependent Claim
16 words
The information processing system according to claim 32, wherein said destination module is an I/O device.
Claim 44
Dependent Claim
26 words
The information processing system according to claim 33, wherein said processor accesses said I/O device through said first bus, said bus adapter and said second bus.
Claim 45
Dependent Claim
60 words
An information processing system comprising: a source module; a first bus coupled to said source module, said first bus employing a first split bus transfer protocol; a second bus to be coupled to a destination module, said second bus employing a second split bus transfer protocol; and a bus adapter for hierarchically coupling said first bus and said second bus.
Claim 46
Dependent Claim
60 words
An information processing system comprising: a source module; a first bus coupled to said source module, said first bus employing a first split bus transfer protocol; a second bus to be coupled to a destination module, said second bus employing a second split bus transfer protocol; and a bus adapter for hierarchically coupling said first bus and said second bus.
Claim 47
Dependent Claim
15 words
The information processing system according to claim 35, wherein said source module is a processor.
Claim 48
Dependent Claim
16 words
The information processing system according to claim 36, wherein said destination module is an I/O device.
Claim 49
Dependent Claim
26 words
The information processing system according to claim 37, wherein said processor accesses said I/O device through said first bus, said bus adapter and said second bus.
Claim 50
Dependent Claim
60 words
An information processing system comprising: a first module; a first bus operatively connected to said first module, said first bus employing a first split transfer protocol; a second module; a second bus coupled to said second module, said second bus employing a second split transfer protocol; and a bus adapter for hierarchically connecting said first bus and said second bus.
Claim 51
Dependent Claim
60 words
An information processing system comprising: a first module; a first bus operatively connected to said first module, said first bus employing a first split transfer protocol; a second module; a second bus coupled to said second module, said second bus employing a second split transfer protocol; and a bus adapter for hierarchically connecting said first bus and said second bus.
Claim 52
Dependent Claim
15 words
The information processing system according to claim 39, wherein said first module is a processor.
Claim 53
Dependent Claim
16 words
The information processing system according to claim 40, wherein said second module is an I/O device.
Claim 54
Dependent Claim
27 words
The information processing system according to claim 40, wherein said first module accesses said second module through said first bus, said bus adapter and said second bus.
Claim 55
Dependent Claim
29 words
The information processing system according to claim 40, wherein said first module reads data from said second module via said first bus, said bus adapter and said second bus.
Claim 56
Dependent Claim
59 words
An information processing system comprising: a first bus to be operatively connected to a first module, said first bus adopting a first split transfer protocol; a second bus to be operatively connected to a second module, said second bus adopting a second split transfer protocol; and a bus adapter for hierarchically connecting said first bus and said second bus.
Claim 57
Dependent Claim
59 words
An information processing system comprising: a first bus to be operatively connected to a first module, said first bus adopting a first split transfer protocol; a second bus to be operatively connected to a second module, said second bus adopting a second split transfer protocol; and a bus adapter for hierarchically connecting said first bus and said second bus.
Claim 58
Dependent Claim
15 words
The information processing system according to claim 44, wherein said first module is a processor.
Claim 59
Dependent Claim
16 words
The information processing system according to claim 45, wherein said second module is an I/O device.
Claim 60
Dependent Claim
26 words
The information processing system according to claim 46, wherein said processor accesses said I/O device through said first bus, said bus adapter and said second bus.
References Cited (Backward Citations)
US538224A
Cited
US3997896A
Cited
US4128883A
Cited
US4290102A
Cited
US4232366A
Cited
US4543628A
Cited
US4821174A
Cited
US4941088A
Cited
US4797815A
Cited
US4785394A
Cited
US4953072A
Cited
US5146597A
Cited
US4821380A
Cited
US5001625A
Cited
US5235684A
Cited
US5274787A
Cited
US5483642A
Cited
US5237567A
Cited
US5191649A
Cited
US5414820A
Cited
US5594880A
Cited
US5379384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-08-23 | 2003-02-22 | 2003-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-23 | 2007-02-22 | 2007-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-23 | 2011-02-22 | 2011-08-24 | $7700.00 | Window Closed / Lapsed |