US5371683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
LSI design support system
Assignee: Toshiba Corp
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Filing: 1991-10-03
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Granted: 1994-12-06
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Expires: 2011-10-03
Abstract
Abstract Disclosed is an LSI design support system for making a functional design of LSI using a graphic input method. This system comprises a state transition diagram preparation portion for preparing a state transition diagram, state transition table preparation portion for preparing a state transition table, and a state-operation circuit diagram preparation portion for preparing a state-operation circuit diagram. Data from these preparation portions are examined therebetween and the results are displayed at the same time on a picture plane so that a designer can efficiently make a design on circuit operation including its state transition. Also disclosed is another LSI design support system. As well as the preparation portions in the above system, this system comprises a transitional-condition analysis portion for analyzing transitional conditions of a state transition diagram obtained by the state transition diagram preparation portion or a state transition table obtained by the state transition table, an automatic-layout-wiring program execution portion for preparing a state transition diagram by data from the state transition table, and an automatic-table-preparation program execution portion for preparing a state transition table by data from the state transition diagram.
Inventors
- 👤 Takayuki Fukazawa
- 👤 Kunihiko Yamagishi
- 👤 Eiichi Yano
- 👤 Masatoshi Sekine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:17
CPC Classifications
G; G06; G06F; G06F30/00; G06F30/30
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
158 words
An LSI design support system, comprising: state transition diagram preparation means for preparing a state transition diagram to show transitional relationships between states of circuit operation by graphic input; state transition table preparation means for preparing a state transition table to show transitional conditions between transitable states in the state transition diagram prepared by the state transition diagram preparation means; state-operation circuit diagram preparation means for preparing an operational expression diagram to show operations corresponding to states in the state transition diagram; and display means for displaying the state transition diagram, the state transition table, and the operational expression diagram; wherein in the operational expression diagram, a circuit which has already been designed is displayed by a first type of line, a circuit for reference in a transition state which has already been designed is displayed by a second type of line, and a circuit portion which is being designed is displayed by a third type of line.
Claim 2
Dependent Claim
158 words
An LSI design support system, comprising: state transition diagram preparation means for preparing a state transition diagram to show transitional relationships between states of circuit operation by graphic input; state transition table preparation means for preparing a state transition table to show transitional conditions between transitable states in the state transition diagram prepared by the state transition diagram preparation means; state-operation circuit diagram preparation means for preparing an operational expression diagram to show operations corresponding to states in the state transition diagram; and display means for displaying the state transition diagram, the state transition table, and the operational expression diagram; wherein in the operational expression diagram, a circuit which has already been designed is displayed by a first type of line, a circuit for reference in a transition state which has already been designed is displayed by a second type of line, and a circuit portion which is being designed is displayed by a third type of line.
Claim 3
Dependent Claim
39 words
An LSI design support system according to claim 1, wherein input-output of data for the state transition diagram preparation means, the state transition table preparation means and the state-operation circuit diagram preparation means is displayed by the display means.
Claim 4
Dependent Claim
26 words
An LSI design support system according to claim 1, wherein the operational expression diagram prepared by the state-operation circuit diagram preparation means is a circuit diagram.
Claim 5
Dependent Claim
31 words
An LSI design support system according to claim 1, wherein the operational expression diagram prepared by the state-operation circuit diagram preparation means is a description including descriptive characters and descriptive symbols.
Claim 6
Dependent Claim
35 words
An LSI design support system according to claim 1, wherein the operational expression diagram prepared by the state-operation circuit diagram preparation means includes a circuit diagram and a description including descriptive characters and descriptive symbols.
Claim 7
Dependent Claim
70 words
An LSI design support system according to claim 1, wherein the state transition table preparation means has a function to display names of states transitable to a state under design through the display means, and prepare the state transition table by inputting transitional conditions and target states for the transitable states in the interactive mode through the display means, and describing the transitional conditions and names of the target states.
Claim 8
Dependent Claim
16 words
An LSI design support system according to claim 1, wherein the display means is a CRT.
Claim 9
Dependent Claim
34 words
An LSI design support system according to claim 1, wherein the state transition diagram, the state transition table, and the operational expression diagram are respectively displayed on the display means at the same time.
Claim 10
Dependent Claim
179 words
An LSI design support system, comprising: state transition diagram preparation means for preparing a state transition diagram to show transitional relationships between states of a circuit by graphic input; state transition table preparation means for preparing a state transition table to show transitional conditions between transitable states of the circuit using data input for state transition; state-operation circuit diagram preparation means for preparing an operational expression diagram to show operations corresponding to states shown by the state transition diagram prepared by the state transition diagram preparation means and the state transition table prepared by the state transition table preparation means; graphic conversion means for bi-directionally converting between the state transition diagram and the state transition table; and display means for displaying the state transition diagram, the state transition table, the operational expression diagram, and state transition conversion graphics; wherein a circuit which has already been designed, a circuit for reference to a transition state which has already been designed, and a circuit which is being designed are respectively represented by different types of lines in the operational expression diagram.
Claim 11
Dependent Claim
179 words
An LSI design support system, comprising: state transition diagram preparation means for preparing a state transition diagram to show transitional relationships between states of a circuit by graphic input; state transition table preparation means for preparing a state transition table to show transitional conditions between transitable states of the circuit using data input for state transition; state-operation circuit diagram preparation means for preparing an operational expression diagram to show operations corresponding to states shown by the state transition diagram prepared by the state transition diagram preparation means and the state transition table prepared by the state transition table preparation means; graphic conversion means for bi-directionally converting between the state transition diagram and the state transition table; and display means for displaying the state transition diagram, the state transition table, the operational expression diagram, and state transition conversion graphics; wherein a circuit which has already been designed, a circuit for reference to a transition state which has already been designed, and a circuit which is being designed are respectively represented by different types of lines in the operational expression diagram.
Claim 12
Dependent Claim
26 words
An LSI design support system according to claim 9, wherein the operational expression diagram prepared by the state-operation circuit diagram preparation means is a circuit diagram.
Claim 13
Dependent Claim
31 words
An LSI design support system according to claim 9, wherein the operational expression diagram prepared by the state-operation circuit diagram preparation means is a description including descriptive characters and descriptive symbols.
Claim 14
Dependent Claim
35 words
An LSI design support system according to claim 9, wherein the operational expression diagram prepared by the state-operation circuit diagram preparation means includes a circuit diagram and a description including descriptive characters and descriptive symbols.
Claim 15
Dependent Claim
39 words
An LSI design support system according to claim 9, wherein input-output of data for the state transition diagram preparation means, the state transition table preparation means, and the state-operation circuit diagram preparation means is displayed by the display means.
Claim 16
Dependent Claim
70 words
An LSI design support system according to claim 9, wherein the state transition table preparation means has a function to display names of states transitable to a state under design through the display means, and prepare the state transition table by inputting transitional conditions and target states for the transitable states in the interactive mode through the display means, and describing the transitional conditions and names of the target states.
Claim 17
Dependent Claim
35 words
An LSI design support system according to claim 9, wherein the state transition diagram, the state transition table, and the operational expression diagram respectively displayed by the display means are displayed at the same time.
Claim 18
Dependent Claim
16 words
An LSI design support system according to claim 9, wherein the display means is a CRT.
Claim 19
Dependent Claim
196 words
An LSI design support system, comprising: state transition diagram preparation means for preparing a state transition diagram to show transitional relationships between states of circuit operation by graphic input; state transition table preparation means for preparing a state transition table to show transitional conditions between transitable states in the state transition diagram prepared by the state transition diagram preparation means; state-operation circuit diagram preparation means for preparing an operational expression diagram to show operations corresponding to states in the state transition diagram such that the operational expression diagram can be separately expressed into a circuit portion which is operative in a state, another circuit portion which is operative in another state, and other circuit portions; and display means for displaying at least one of the state transition diagram, the state transition table, and the operational expression means; wherein in the operational expression diagram, a circuit which has already been designed is displayed by a first type of line, a circuit for reference in a transition state which has already been designed is being displayed by a second type of line, and a circuit portion which is being designed is displayed by a third type of line.
Claim 20
Dependent Claim
196 words
An LSI design support system, comprising: state transition diagram preparation means for preparing a state transition diagram to show transitional relationships between states of circuit operation by graphic input; state transition table preparation means for preparing a state transition table to show transitional conditions between transitable states in the state transition diagram prepared by the state transition diagram preparation means; state-operation circuit diagram preparation means for preparing an operational expression diagram to show operations corresponding to states in the state transition diagram such that the operational expression diagram can be separately expressed into a circuit portion which is operative in a state, another circuit portion which is operative in another state, and other circuit portions; and display means for displaying at least one of the state transition diagram, the state transition table, and the operational expression means; wherein in the operational expression diagram, a circuit which has already been designed is displayed by a first type of line, a circuit for reference in a transition state which has already been designed is being displayed by a second type of line, and a circuit portion which is being designed is displayed by a third type of line.
Claim 21
Dependent Claim
34 words
An LSI design support system according to claim 17, wherein the operational expression diagram prepared by the state-operation circuit diagram preparation means includes a circuit diagram and description including descriptive characters and descriptive symbols.
Claim 22
Dependent Claim
58 words
An LSI design support system according to claim 17, wherein the state transition diagram prepared by the state transition diagram preparation means, the state transition table prepared by the state transition table preparation means, and the operational expression diagram prepared by the state-operation circuit diagram preparation means are respectively displayed on the display means at the same time.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-05 | 1998-06-06 | 1998-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-05 | 2002-06-06 | 2002-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-05 | 2006-06-06 | 2006-12-06 | $7700.00 | Window Closed / Lapsed |