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US4812829A
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US
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Three-dimensional display device and method for pointing displayed three-dimensional image
Assignee: Hitachi Ltd
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Filing: 1987-05-11
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Granted: 1989-03-14
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Expires: 2007-05-11
Abstract
Abstract A display device comprises a display, an input and a controller. The display displays a three-dimensional image, a vector cursor and a pointing image extending in a direction of movement of the vector cursor. The controller generates a display signal to display the three-dimensional image, vector cursor and pointing image. The controller recognizes the three-dimensional image crossing to the pointing image in response to the pointing signal from the input.
Inventors
- 👤 Osamu Ebina
- 👤 Seigo Ono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:10
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F3/038; G05; G05G; G05G9/00; G05G9/02; G05G9/04; G05G9/047; G06F3/048; G06F3/0481; G06F3/04812; G06F3/0484; G06F3/04842
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
141 words
A three-dimensional display device comprising: display means for displaying on a two-dimensional screen three-dimensional objects, a vector cursor virtually located in a three-dimensional space and moving in said space, and a pointer extending from the vector cursor in a direction of movement of the vector cursor for selectively identifying objects intercepted thereby in the three-dimensional space, in response to a display signal; input means for inputting a parameter for changing the direction of the vector cursor and a pointing signal for controlling said pointer to identify a three-dimensional object displayed by said display means; and control means connected between said display means and said input means for generating the display signal to display the three-dimensional objects, the vector cursor and the pointer, and including means for recognizing a three-dimensional object pointed to by said pointer in response to the pointing signal.
Claim 2
Dependent Claim
141 words
A three-dimensional display device comprising: display means for displaying on a two-dimensional screen three-dimensional objects, a vector cursor virtually located in a three-dimensional space and moving in said space, and a pointer extending from the vector cursor in a direction of movement of the vector cursor for selectively identifying objects intercepted thereby in the three-dimensional space, in response to a display signal; input means for inputting a parameter for changing the direction of the vector cursor and a pointing signal for controlling said pointer to identify a three-dimensional object displayed by said display means; and control means connected between said display means and said input means for generating the display signal to display the three-dimensional objects, the vector cursor and the pointer, and including means for recognizing a three-dimensional object pointed to by said pointer in response to the pointing signal.
Claim 3
Dependent Claim
37 words
A three-dimensional display device according to claim 1, wherein said control means includes means for generating said display signal to display a line segment extending in the direction of movement of the vector cursor as said pointer.
Claim 4
Dependent Claim
43 words
A three-dimensional display device according to claim 2, wherein said control means includes means for identifying the three-dimensional object intercepted by said line segment at the closest point to said vector cursor, as the pointed to object in response to the pointing signal.
Claim 5
Dependent Claim
46 words
A three-dimensional display device according to claim 3, wherein said input means includes means for controlling said control means to indicate indentification of the three-dimensional object which is the n-th closest one to the vector cursor along said line segment, where n is a positive integer.
Claim 6
Dependent Claim
47 words
A three-dimensional display device according to claim 1, wherein said control means generates the display signal to display a radial image in the form of a cone extending from its apex at the vector cursor in the direction of movement of the vector cursor, as said pointer.
Claim 7
Dependent Claim
40 words
A three-dimensional display device according to claim 5, wherein said control means recognizes the three-dimensional object intercepted by the radial image and closest to the apex of the cone as the pointed to image in response to the pointing signal.
Claim 8
Dependent Claim
48 words
A three-dimensional display device according to claim 6, wherein said input means includes means for controlling said control means to indicate indentification of the three-dimensional object which is the n-th closest one to the apex of the cone forming the radial image, where n is a positive integer.
Claim 9
Independent Claim
110 words
A method for pointing to a displayed image in a three-dimensional display device comprising the steps of: displaying on display means a plurality of three-dimensional objects, a vector cursor virturally located in a three-dimensional space and as moving in said space and a pointer extending from the vector cursor in a direction of movement of the vector cursor; supplying a parameter representing the direction of movement of the vector cursor to control means by input means; changing the movement of the vector cursor in accordance with the parameter; and identifying a three-dimensional object intercepted by said pointer in response to a pointing signal to instruct recognition of the three-dimensional object.
Claim 10
Independent Claim
110 words
A method for pointing to a displayed image in a three-dimensional display device comprising the steps of: displaying on display means a plurality of three-dimensional objects, a vector cursor virturally located in a three-dimensional space and as moving in said space and a pointer extending from the vector cursor in a direction of movement of the vector cursor; supplying a parameter representing the direction of movement of the vector cursor to control means by input means; changing the movement of the vector cursor in accordance with the parameter; and identifying a three-dimensional object intercepted by said pointer in response to a pointing signal to instruct recognition of the three-dimensional object.
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) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |