JPS6465628A - Digital operation deciding circuit - Google Patents
Digital operation deciding circuitInfo
- Publication number
- JPS6465628A JPS6465628A JP62223347A JP22334787A JPS6465628A JP S6465628 A JPS6465628 A JP S6465628A JP 62223347 A JP62223347 A JP 62223347A JP 22334787 A JP22334787 A JP 22334787A JP S6465628 A JPS6465628 A JP S6465628A
- Authority
- JP
- Japan
- Prior art keywords
- data
- alpha
- bits
- size
- beta
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
PURPOSE:To allow a small sized circuit to execute excellent decision even when there are many bits in the data by providing the titled circuit with the 1st and 2nd deciding means and an arithmetic means for calculating an absolute value to decide a prescribed condition and to execute required decision. CONSTITUTION:A digital operation formula is substituted for ¦A - B¦<2N. Data alpha, beta of respective lower N bits in the data A, B are compared at their size by a size comparator 15. On the other hand, data (a), (b) of upper bits excluding the lower N bits in the data A, B are compared at their size by a size comparator 18. The data (b) are converted into a negative value, a - b is calculated by a full adder 21, and when the absolute value is '1', outputs an 'H' level signal. In the other case, an 'L' level signal is outputted. The level outputs of each decision result are supplied to an OR circuit 24 through AND circuits 16, 17 and 19, 20. The outputs goes to a 'H' level, only when a=b, ¦a-b¦, and alpha<beta, ¦a-b¦=1 and a<alpha, alpha>beta. Then, whether or not the formu la is satisfied, is decided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62223347A JPS6465628A (en) | 1987-09-07 | 1987-09-07 | Digital operation deciding circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62223347A JPS6465628A (en) | 1987-09-07 | 1987-09-07 | Digital operation deciding circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6465628A true JPS6465628A (en) | 1989-03-10 |
Family
ID=16796739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62223347A Pending JPS6465628A (en) | 1987-09-07 | 1987-09-07 | Digital operation deciding circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6465628A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512075A (en) * | 1993-04-05 | 1996-04-30 | Nippondenso Co., Ltd. | Folded filter element for filtering fluid |
| US5792229A (en) * | 1994-07-07 | 1998-08-11 | Nippondenso Co., Ltd. | Filter and filtering apparatus |
| US7917342B2 (en) | 2002-10-04 | 2011-03-29 | Mitsubishi Heavy Industries, Ltd. | Computer aided design system and computer aided design program using a geometric surface model |
-
1987
- 1987-09-07 JP JP62223347A patent/JPS6465628A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512075A (en) * | 1993-04-05 | 1996-04-30 | Nippondenso Co., Ltd. | Folded filter element for filtering fluid |
| US5792229A (en) * | 1994-07-07 | 1998-08-11 | Nippondenso Co., Ltd. | Filter and filtering apparatus |
| US7917342B2 (en) | 2002-10-04 | 2011-03-29 | Mitsubishi Heavy Industries, Ltd. | Computer aided design system and computer aided design program using a geometric surface model |
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