JP4607604B2 - 4:2csaセル及び4:2キャリ保存加算方法 - Google Patents
4:2csaセル及び4:2キャリ保存加算方法 Download PDFInfo
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- JP4607604B2 JP4607604B2 JP2005014506A JP2005014506A JP4607604B2 JP 4607604 B2 JP4607604 B2 JP 4607604B2 JP 2005014506 A JP2005014506 A JP 2005014506A JP 2005014506 A JP2005014506 A JP 2005014506A JP 4607604 B2 JP4607604 B2 JP 4607604B2
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- xor
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- carry
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- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
- B65B11/56—Rolling articles with wrappers along a supporting surface
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/60—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers
- G06F7/607—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers number-of-ones counters, i.e. devices for counting the number of input lines set to ONE among a plurality of input lines, also called bit counters or parallel counters
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- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B2220/00—Specific aspects of the packaging operation
- B65B2220/16—Packaging contents into primary and secondary packaging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
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- B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/54—Gates or closures
Description
そこで、ロジック最適化を通じて、ロジック段階を減らして消費電力を最小化できる新しい4:2CSAセルの存在が必要である。
本発明が解決しようとする他の課題は、4:2キャリ保存加算方法を提供するところにある。
以下、添付された図面を参照して本発明の望ましい実施例を説明することにより、本発明を詳細に説明する。各図面に付された同一参照符号は同一部材を示す。
本発明の4:2CSAセルの説明に先立って、図2の従来の4:2CSAセルの動作を真理値表で表わせば次の通りである。
第3スイッチ414は、奇数信号ODDに応答してキャリ入力信号Cinを桁上げCryとして出力し、第4スイッチ416は、反転された奇数信号/ODDに応答して入力Dを桁上げCryとして出力する。
第5スイッチ418は、奇数信号ODDに応答して反転されたキャリ入力信号/Cinを和Sumとして出力し、第6スイッチ420は、反転された奇数信号/ODDに応答してキャリ入力信号Cinを和Sumとして出力する。
404 第1インバータ
406 第2インバータ
408 第3インバータ
410 第1スイッチ
412 第2スイッチ
414 第3スイッチ
416 第4スイッチ
418 第5スイッチ
420 第6スイッチ
Claims (3)
- 第1ないし第4入力信号のXORを求めて奇数信号として発生させ、前記第1及び第2入力信号のXORを求めて第1XOR信号として出力する奇数検出部と、
前記第1XOR信号のロジック‘1’に応答して、前記第3入力信号をキャリ出力信号として出力する第1スイッチと、
反転された前記第1XOR信号のロジック‘0’に応答して、前記第1入力信号を前記キャリ出力信号として出力する第2スイッチと、
前記奇数信号に応答して、キャリ入力信号を桁上げとして出力する第3スイッチと、
反転された前記奇数信号に応答して、前記第4入力信号を桁上げとして出力する第4スイッチと、
前記奇数信号に応答して、反転された前記キャリ入力信号を和として出力する第5スイッチと、
反転された前記奇数信号に応答して、前記キャリ入力信号を前記和として出力する第6スイッチと、を備えることを特徴とする4:2CSAセル。 - 前記奇数検出部は、
前記第1及び第2入力信号のXORを求めて、前記第1XOR信号を発生させる第1XORゲートと、
前記第3及び第4入力信号のXORを求めて、第2XOR信号を発生させる第2XORゲートと、
前記第1及び第2XOR信号のXORを求めて、前記奇数信号を発生させる第3XORゲートと、を備えることを特徴とする請求項1に記載の4:2CSAセル。 - 第1ないし第4入力をXORして第1XOR信号を求める段階と、
前記第1及び第3入力をXORして第2XOR信号を求める段階と、
前記第2XOR信号のロジック‘0'に応答して、前記第1入力をキャリ出力信号Coutとして出力する段階と、
前記第2XOR信号のロジック‘1'に応答して、前記第3入力を前記キャリ出力信号Coutとして出力する段階と、
前記第1XOR信号のロジック ‘0'に応答して、前記第4入力を桁上げCryとして出力する段階と、
前記第1XOR信号のロジック ‘1'に応答して、キャリ入力信号を桁上げCryとして出力する段階と、
前記第1XOR信号のロジック ‘0'に応答して、前記キャリ入力信号を和Sumとして出力する段階と、
前記第1XOR信号のロジック ‘1'に応答して、反転された前記キャリ入力信号を前記和Sumとして出力する段階と、を備えることを特徴とする4:2キャリ保存加算方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040005310A KR100985110B1 (ko) | 2004-01-28 | 2004-01-28 | 단순한 구조의 4:2 csa 셀 및 4:2 캐리 저장 가산 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005218094A JP2005218094A (ja) | 2005-08-11 |
JP4607604B2 true JP4607604B2 (ja) | 2011-01-05 |
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Application Number | Title | Priority Date | Filing Date |
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JP2005014506A Expired - Fee Related JP4607604B2 (ja) | 2004-01-28 | 2005-01-21 | 4:2csaセル及び4:2キャリ保存加算方法 |
Country Status (3)
Country | Link |
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US (1) | US7620677B2 (ja) |
JP (1) | JP4607604B2 (ja) |
KR (1) | KR100985110B1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI310656B (en) * | 2006-03-07 | 2009-06-01 | Princeton Technology Corp | An image processing device and related method for improving image quality with a csa accumulator |
US9495154B2 (en) | 2013-03-13 | 2016-11-15 | Qualcomm Incorporated | Vector processing engines having programmable data path configurations for providing multi-mode vector processing, and related vector processors, systems, and methods |
US20140280407A1 (en) * | 2013-03-13 | 2014-09-18 | Qualcomm Incorporated | Vector processing carry-save accumulators employing redundant carry-save format to reduce carry propagation, and related vector processors, systems, and methods |
US9275014B2 (en) | 2013-03-13 | 2016-03-01 | Qualcomm Incorporated | Vector processing engines having programmable data path configurations for providing multi-mode radix-2x butterfly vector processing circuits, and related vector processors, systems, and methods |
GB201616274D0 (en) * | 2016-09-26 | 2016-11-09 | International Business Machines Corporation | Circuit for addition of multiple binary numbers |
CN107977191B (zh) * | 2016-10-21 | 2021-07-27 | 中国科学院微电子研究所 | 一种低功耗并行乘法器 |
KR101958988B1 (ko) * | 2017-08-09 | 2019-03-19 | 주식회사 티맥스데이터 | 데이터베이스 관리 서버에서 연산을 효율적으로 수행하는 방법, 장치 및 컴퓨터 판독가능 매체에 저장된 컴퓨터-프로그램 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5818747A (en) * | 1995-01-27 | 1998-10-06 | Sun Microsystems, Inc. | Small, fast CMOS 4-2 carry-save adder cell |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2636749B2 (ja) | 1994-09-08 | 1997-07-30 | 日本電気株式会社 | Xor回路と反転セレクタ回路及びこれらを用いた加算回路 |
US5491653A (en) | 1994-10-06 | 1996-02-13 | International Business Machines Corporation | Differential carry-save adder and multiplier |
KR970022732A (ko) | 1995-10-11 | 1997-05-30 | 김광호 | 부스(Booth) 디코딩을 적용한 곱셈장치 |
US5805491A (en) | 1997-07-11 | 1998-09-08 | International Business Machines Corporation | Fast 4-2 carry save adder using multiplexer logic |
JP2000235477A (ja) | 1999-02-17 | 2000-08-29 | Matsushita Electric Ind Co Ltd | 演算装置 |
US6711633B2 (en) | 2002-01-30 | 2004-03-23 | International Business Machines Corporation | 4:2 compressor circuit for use in an arithmetic unit |
US7284029B2 (en) * | 2003-11-06 | 2007-10-16 | International Business Machines Corporation | 4-to-2 carry save adder using limited switching dynamic logic |
-
2004
- 2004-01-28 KR KR1020040005310A patent/KR100985110B1/ko not_active IP Right Cessation
-
2005
- 2005-01-10 US US11/032,368 patent/US7620677B2/en not_active Expired - Fee Related
- 2005-01-21 JP JP2005014506A patent/JP4607604B2/ja not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5818747A (en) * | 1995-01-27 | 1998-10-06 | Sun Microsystems, Inc. | Small, fast CMOS 4-2 carry-save adder cell |
Also Published As
Publication number | Publication date |
---|---|
JP2005218094A (ja) | 2005-08-11 |
US7620677B2 (en) | 2009-11-17 |
US20050165878A1 (en) | 2005-07-28 |
KR100985110B1 (ko) | 2010-10-05 |
KR20050077831A (ko) | 2005-08-04 |
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