Patent US5138700A successfully refreshed from Google Patents.
US5138700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for magnifying display data generated in a computer system using an overhead projector
Assignee: Toshiba Corp
•
Filing: 1991-07-15
•
Granted: 1992-08-11
•
Expires: 2011-07-15
Abstract
Abstract To magnify display data generated by a lap-top type computer using a magnifying display unit having a transmission type liquid crystal display (LCD) and an overhead projector (OHP) apparatus, a display control apparatus is set between the lap-top type computer and the magnifying display unit. The display control apparatus is connected via an interface to the lap-top type computer. The display data is stored in the display control apparatus. The stored display data is output to the LCD in a predetermined timing so that it is magnified by the OHP apparatus.
Inventors
- 👤 Kiyoshi Kinoshita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:08
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/14; G06F3/147; G09; G09G; G09G2360/00; G09G2360/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
75 words
A magnification-display system for a computer system for generating display data, comprising: first display means for displaying the display data when the display data is generated in the computer system; interface means for transmitting the display data generated in the computer system; second display means for displaying the display data transmitted by the interface means; and magnification-display means, including an overhead projector, for magnifying and displaying the display data displayed on the second display means.
Claim 2
Dependent Claim
75 words
A magnification-display system for a computer system for generating display data, comprising: first display means for displaying the display data when the display data is generated in the computer system; interface means for transmitting the display data generated in the computer system; second display means for displaying the display data transmitted by the interface means; and magnification-display means, including an overhead projector, for magnifying and displaying the display data displayed on the second display means.
Claim 3
Dependent Claim
18 words
The system according to claim 1, wherein the second display means includes a transmission type liquid crystal display.
Claim 4
Dependent Claim
39 words
The system according to claim 1, wherein the interface means includes: storing means for storing the display data generated in the computer system, and drive-controlling means for controlling the second display means in accordance with the stored display data.
Claim 5
Dependent Claim
29 words
The system according to claim 3, wherein the interface means further comprises timing-controlling means for controlling the storing means and the drive-controlling means in accordance with a predetermined timing.
Claim 6
Dependent Claim
17 words
A magnification-display system according to claim 1, wherein said first display means comprises a flat panel display.
Claim 7
Dependent Claim
25 words
A magnification-display system according to claim 1, further comprising: bus means for transferring the display data to the computer system and to the interface means.
Claim 8
Independent Claim
112 words
A method of displaying and magnifying data for a computer system having a first display device and being connectable to a second display device, comprising the steps of: generating display data in the computer system; displaying the display data on the first display device; outputting the display data to the second display device; displaying the display data on the second display device; and magnifying and displaying the display data displayed on the second display device, wherein said display data is supplied from the computer system to the second display device when sad display data is generated in the computer system and when the second display device is coupled to the computer system.
Claim 9
Independent Claim
112 words
A method of displaying and magnifying data for a computer system having a first display device and being connectable to a second display device, comprising the steps of: generating display data in the computer system; displaying the display data on the first display device; outputting the display data to the second display device; displaying the display data on the second display device; and magnifying and displaying the display data displayed on the second display device, wherein said display data is supplied from the computer system to the second display device when sad display data is generated in the computer system and when the second display device is coupled to the computer system.
Claim 10
Dependent Claim
18 words
The method according to claim 7, wherein the outputting step includes the step of storing the display data.
Claim 11
Dependent Claim
116 words
A display system comprising: a computer including a bus, a display screen, a first memory for storing data sent through the bus, a first display controller for controlling display of the data on the display screen, and an expansion interface connected to the bus; a display control apparatus connected to the expansion interface and including a second memory for storing the data sent through the bus and the expansion interface, and a second memory controller for outputting the data from the display control apparatus; a transmission type liquid crystal display for displaying the data sent from the second display controller; and an overhead projector for magnifying the data displayed on the transmission type liquid crystal display.
Claim 12
Dependent Claim
116 words
A display system comprising: a computer including a bus, a display screen, a first memory for storing data sent through the bus, a first display controller for controlling display of the data on the display screen, and an expansion interface connected to the bus; a display control apparatus connected to the expansion interface and including a second memory for storing the data sent through the bus and the expansion interface, and a second memory controller for outputting the data from the display control apparatus; a transmission type liquid crystal display for displaying the data sent from the second display controller; and an overhead projector for magnifying the data displayed on the transmission type liquid crystal display.
Claim 13
Dependent Claim
14 words
The display system according to claim 9, wherein the computer is a lap-top computer.
References Cited (Backward Citations)
JPS5224493A
Cited
GB2089616A
Cited
US4538993A
Cited
US4652101A
Cited
US4679909A
Cited
JPS61143174A
Cited
WO1986007164A1
Cited
FR2585166A1
Cited
US4819190A
Cited
US4756604A
Cited
US4818074A
Cited
US4779134A
Cited
US4846694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-11 | 1996-02-10 | 1996-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-11 | 2000-02-10 | 2000-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-11 | 2004-02-10 | 2004-08-11 | $7700.00 | Window Closed / Lapsed |