US6243732B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data processor and data processing system
Assignee: Renesas Electronics Corp
•
Filing: 2000-01-07
•
Granted: 2001-06-05
•
Expires: 2020-01-07
Abstract
Abstract A data processor includes an arithmetic portion incorporated in a floating point unit, in which the arithmetic portion includes a plurality of multipliers supplied mantissa part of floating point number from respectively different data input signal line group and performing mutual multiplication of supplied mantissa parts, an aligner receiving outputs of respective multipliers and performing alignment shift, an exponent processing portion for generating number of alignment shift of the aligner and an exponent before normalization on the basis of generation an exponent part of the floating point number, a multi-input adder and the exponent before normalization, reducing scale of the circuit and performing inner product operation and the like with the floating point numbers in high speed and high accuracy.
Inventors
- 👤 Fumio Arakawa
- 👤 Norio Nakagawa
- 👤 Tetsuya Yamada
- 👤 Yonetaro Totsuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:32
CPC Classifications
G; G06; G06F; G06F17/00; G06F17/10; G06F17/16; G06F7/00; G06F7/38; G06F7/48; G06F7/50; G06F7/505; G06F7/509; G06F7/544; G06F7/5443; G06F7/548; G06F9/00; G06F9/06; G06F9/30; G06F9/30003; G06F9/30007; G06F9/3001; G06F9/30014; G06F9/30036; G06F9/30098; G06F9/30105; G06F9/30112; G06F9/3012; G06F9/3013; G06F9/38; G06F9/3885; G06F9/3887; G06F7/483
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
54 words
A data processor comprising: a central processing unit; and a floating point unit, wherein said central processing unit and said floating point unit execute instructions in an instruction set, and wherein said instruction set includes a command for causing an inner product operation of a vector to be executed by said floating point unit.
Claim 2
Dependent Claim
54 words
A data processor comprising: a central processing unit; and a floating point unit, wherein said central processing unit and said floating point unit execute instructions in an instruction set, and wherein said instruction set includes a command for causing an inner product operation of a vector to be executed by said floating point unit.
Claim 3
Dependent Claim
98 words
A data processor according to claim 1 , wherein said floating point unit comprises: a plurality of multipliers for multiplying a mantissa part of a floating point number; an aligner for receiving an output of said multipliers and carrying out an alignment shift on said output; an exponent processing portion for generating an exponent prior to a normalization in accordance with an exponent part of said floating point number; a multi-input adder for adding an output of said aligner; and a normalizing unit for normalizing an output of said multi-input adder and the exponent prior to the normalization.
Claim 4
Dependent Claim
72 words
A data processing system comprising: means for executing a three-dimensional graphic processing using said a data processor, wherein said data processor comprises: a central processing unit, and a floating point unit, wherein said central processing unit and said floating point unit execute instructions in an instruction set, and wherein said instruction set includes a command for causing an inner product operation of a vector to be executed by said floating point unit.
Claim 5
Dependent Claim
72 words
A data processing system comprising: means for executing a three-dimensional graphic processing using said a data processor, wherein said data processor comprises: a central processing unit, and a floating point unit, wherein said central processing unit and said floating point unit execute instructions in an instruction set, and wherein said instruction set includes a command for causing an inner product operation of a vector to be executed by said floating point unit.
Claim 6
Dependent Claim
59 words
A data processor comprising: a central processing unit; and a floating point unit, wherein said central processing unit and said floating point unit executes instructions in an instruction set, and wherein said instruction set includes a command for causing an inner product operation of a four-component vector and another four-component vector to be executed by said floating point unit.
Claim 7
Dependent Claim
59 words
A data processor comprising: a central processing unit; and a floating point unit, wherein said central processing unit and said floating point unit executes instructions in an instruction set, and wherein said instruction set includes a command for causing an inner product operation of a four-component vector and another four-component vector to be executed by said floating point unit.
Claim 8
Dependent Claim
21 words
A data processor according to claim 4 , wherein said command includes a single instruction for executing the inner product operation.
Claim 9
Dependent Claim
75 words
A data processor system comprising: means for executing a three-dimensional graphic processing using a data processor, wherein said data processor comprises: a central processing, and a floating point unit, wherein said central processing unit and said floating point unit execute instructions in an instruction set, and wherein said instruction set includes a command for causing an inner product operation of a four-component vector and another four-component vector to be executed by said floating point unit.
Claim 10
Dependent Claim
75 words
A data processor system comprising: means for executing a three-dimensional graphic processing using a data processor, wherein said data processor comprises: a central processing, and a floating point unit, wherein said central processing unit and said floating point unit execute instructions in an instruction set, and wherein said instruction set includes a command for causing an inner product operation of a four-component vector and another four-component vector to be executed by said floating point unit.
Claim 11
Dependent Claim
57 words
A data processor comprising: a central processing unit; and a floating point unit, wherein said central processing and said floating point unit execute instructions in an instruction set, and wherein said instruction set includes a command having a single instruction for causing an inner product operation of a vector to be executed by said floating point unit.
Claim 12
Dependent Claim
57 words
A data processor comprising: a central processing unit; and a floating point unit, wherein said central processing and said floating point unit execute instructions in an instruction set, and wherein said instruction set includes a command having a single instruction for causing an inner product operation of a vector to be executed by said floating point unit.
Claim 13
Dependent Claim
95 words
a data processor according to claim 7 , wherein said floating point unit comprises: a plurality of multipliers for multiplying a mantissa part of a floating point number; an aligner for receiving an output of said multiplier, and carrying out an alignment shift; an exponent processor portion for generating an exponent prior to a normalization in accordance with an exponent part of said floating point number; a multi-input adder for adding an output of said aligner; and a normalizing unit for normalizing an output of said multi-input adder and the exponent prior to the normalization.
Claim 14
Dependent Claim
75 words
A data processing system comprising: means for executing a three-dimensional graphic processing using a data processor, wherein said data processor comprises: a central processing unit, and a floating point unit, wherein said central processing unit and said floating point unit execute instructions in an instruction set, and wherein said instruction set includes a command having a single instruction for causing an inner product operation of a vector to be executed by said floating point unit.
Claim 15
Dependent Claim
75 words
A data processing system comprising: means for executing a three-dimensional graphic processing using a data processor, wherein said data processor comprises: a central processing unit, and a floating point unit, wherein said central processing unit and said floating point unit execute instructions in an instruction set, and wherein said instruction set includes a command having a single instruction for causing an inner product operation of a vector to be executed by said floating point unit.
References Cited (Backward Citations)
JPS643734A
Cited
US4969118A
Cited
JPH0521665A
Cited
JPH05150944A
Cited
JPH05233228A
Cited
US5359548A
Cited
US5859997A
Cited
US5983256A
Cited
US6035316A
Cited
US5757686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-06-04 | 2004-12-04 | 2005-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-06-04 | 2008-12-04 | 2009-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-06-04 | 2012-12-04 | 2013-06-05 | $7700.00 | Window Closed / Lapsed |