US5917475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display device and display system incorporating such a device
Assignee: Hitachi Ltd
•
Filing: 1995-06-05
•
Granted: 1999-06-29
•
Expires: 2015-06-05
Abstract
Abstract A display device has a touch pad and a display lamintated together to form a screen, That screen is connected to a controller which processes signals generated by physical contact with the touch pad and activates the display to display e.g. characters input by a stylus to the touch pad. The display device is connected to an external device (e.g. a computer) and video signals from the external device are received via a video input and may be displayed on the display. Also the controller can transmit to the external device via an output. Thus, the display can simultaneously display information from the external device and information input to the touch pad. If the controller is arranged to carry out character recognition, the display device may then act as a handwriting input device, with the handwritten information being incorporated with information in the external device and displayed.
Inventors
- 👤 Soshiro Kuzunuki
- 👤 Yasushi Fukunaga
- 👤 Hiroshi Shojima
- 👤 Masaki Miura
- 👤 Toshimi Yokota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:55
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/14; G06F3/01; G06F3/048; G06F3/0487; G06F3/0488; G06F3/04883; G06F3/0481; G06F2203/00; G06F2203/048; G06F2203/04804
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
171 words
A graphics processing device for displaying composite information including hand-written data, graphic data and video data, said display device comprising: (a) a first processor which processes image data including characters and graphics input from an external device, and generates an address of a frame memory for writing said processed data to said frame memory; (b) a second processor which receives video data input from an external device through a video interface, generates an address of frame memory and writes the input video data into said frame memory based on said generated address; and (c) a third processor which generates an address, reads out information stored in said frame memory based on said generated address and produces composite information to be displayed on a display, wherein said frame memory serves as a common memory to be shared among said first processor, said second processor and said third processor, said frame memory being accessed by time sharing through a frame memory interface based on information to be read out therefrom and written therein.
Claim 2
Dependent Claim
171 words
A graphics processing device for displaying composite information including hand-written data, graphic data and video data, said display device comprising: (a) a first processor which processes image data including characters and graphics input from an external device, and generates an address of a frame memory for writing said processed data to said frame memory; (b) a second processor which receives video data input from an external device through a video interface, generates an address of frame memory and writes the input video data into said frame memory based on said generated address; and (c) a third processor which generates an address, reads out information stored in said frame memory based on said generated address and produces composite information to be displayed on a display, wherein said frame memory serves as a common memory to be shared among said first processor, said second processor and said third processor, said frame memory being accessed by time sharing through a frame memory interface based on information to be read out therefrom and written therein.
Claim 3
Dependent Claim
28 words
A graphics processing device according to claim 1, wherein said first processor, said second processor and said third processor are integrated on a one-chip large scale integration circuit.
Claim 4
Dependent Claim
23 words
A graphics processing device according to claim 1, wherein said video interface of said second processor comprises a horizontal and vertical auto-scanner circuit.
Claim 5
Dependent Claim
48 words
A graphics processing device according to claim 1, wherein said display device comprises means for changing over each address for said first processor, said second processor and said third processor to enable each of said first, second and third processors to access said common memory by time sharing.
Claim 6
Dependent Claim
38 words
A graphics processing device according to claim 1, wherein said display processor produces at least an image display window and a video display window to be overlapped to form a composite display therebetween on a single display screen.
Claim 7
Dependent Claim
35 words
A graphics processing device according to claim 5, wherein said display device comprises at least a register for setting up a composite mode of display of said image display window and said video display window.
Claim 8
Dependent Claim
22 words
A graphics processing device according to claim 1, wherein said first and second processors operate independently and in parallel to one another.
Claim 9
Dependent Claim
212 words
A graphics processing system having a central processing unit for displaying a composite image of graphic data including hand-written data and video data, said graphics processing system comprising: a display having a plurality of display areas; a memory which stores image data including characters and video data, all of said data being stored in respective memory areas; a first processor which processes image data including characters and graphics input from an external device, and generates an address of memory for writing said processed data into said memory; a second processor which processes video data input from an external device, generates an address memory, and writes the input video data into said memory based on said generated address; a third processor which generates an address memory, reads out said image data and video data stored in said memory based on said generated address, and produces composite information to be displayed on said display; and an interface unit which is connected to said first processor, said second processor and said third processor and said CPU through a signal line; wherein said interface unit arbitrates access from said first processor, said second processor, said third processor and said external CPU to said frame memory based on information to be read out therefrom and written therein.
Claim 10
Dependent Claim
212 words
A graphics processing system having a central processing unit for displaying a composite image of graphic data including hand-written data and video data, said graphics processing system comprising: a display having a plurality of display areas; a memory which stores image data including characters and video data, all of said data being stored in respective memory areas; a first processor which processes image data including characters and graphics input from an external device, and generates an address of memory for writing said processed data into said memory; a second processor which processes video data input from an external device, generates an address memory, and writes the input video data into said memory based on said generated address; a third processor which generates an address memory, reads out said image data and video data stored in said memory based on said generated address, and produces composite information to be displayed on said display; and an interface unit which is connected to said first processor, said second processor and said third processor and said CPU through a signal line; wherein said interface unit arbitrates access from said first processor, said second processor, said third processor and said external CPU to said frame memory based on information to be read out therefrom and written therein.
Claim 11
Dependent Claim
39 words
A graphics processing system according to claim 8, wherein said system further comprises means for reading out information stored in said memory through said interface unit and storing the information into a file coupled to said central processing unit.
Claim 12
Dependent Claim
31 words
A graphics processing system according to claim 8, wherein said video data input from an external device includes a video output from a workstation, a personal computer and a word processor.
Claim 13
Dependent Claim
28 words
A graphics processing system according to claim 8, wherein said video data input from an external device includes a video output from a television system including camera images.
Claim 14
Dependent Claim
37 words
A graphics processing system according to claim 8, wherein said system further comprises a coordinate input device and a flat panel display output device, both being laminated to form an integrated hand-writing information input and display unit.
Claim 15
Dependent Claim
63 words
A graphics processing system according to claim 8, wherein said system further comprises a window management system which determines whether a screen window generated on the screen of the display unit is generated by the image processor or by the video processor, and, according to a result of the determination, processes information input from the input means coupled to said information processing system.
Claim 16
Dependent Claim
22 words
A graphics processing device according to claim 8, wherein said first and second processors operate independently and in parallel to one another.
Claim 17
Dependent Claim
158 words
A graphics processing device for displaying composite information including hand-written data, graphic data and video data, said display device comprising: (a) first processor means for receiving video data input from an external device through a video interface, generating an address of a frame memory and writing the video data into said frame memory based on said generated address; and (b) second processor means for processing image data including characters and graphics input from an external device, generating an address of a frame memory writing the image data into said frame memory based on said generated address, and reading the image data and the video data from said frame memory for producing composite information thereof to a display, wherein said frame memory serves as a common memory to be shared between said first processor means and said second processor means being accessed by time sharing through an interface based on information to be read out therefrom and written therein.
Claim 18
Dependent Claim
158 words
A graphics processing device for displaying composite information including hand-written data, graphic data and video data, said display device comprising: (a) first processor means for receiving video data input from an external device through a video interface, generating an address of a frame memory and writing the video data into said frame memory based on said generated address; and (b) second processor means for processing image data including characters and graphics input from an external device, generating an address of a frame memory writing the image data into said frame memory based on said generated address, and reading the image data and the video data from said frame memory for producing composite information thereof to a display, wherein said frame memory serves as a common memory to be shared between said first processor means and said second processor means being accessed by time sharing through an interface based on information to be read out therefrom and written therein.
Claim 19
Dependent Claim
27 words
A graphics processing device according to claim 15, wherein said first processor means and said second processor means are integrated on a one-chip large scale integration circuit.
Claim 20
Dependent Claim
24 words
A graphics processing device according to claim 15, wherein said video interface of said first processor means comprises a horizontal and vertical auto-scanner circuit.
Claim 21
Dependent Claim
23 words
A graphics processing device according to claim 15, wherein said first and second processor means operate independently and in parallel to one another.
Claim 22
Dependent Claim
226 words
A graphics processing device, comprising: a display screen; a controller for generating a hand-written display output; video input means for receiving an input video signal; a memory for storing the input video signal and an output of said controller; and synthesis means for combining the input video signal and the hand-written output of said controller stored in said memory, thereby generating a composite display of the input video signal and the hand-written output of said controller on said display screen, wherein said synthesis means includes: a frame memory, a video processor for generating an address of said frame memory, writing an input video signal in said frame memory based on said generated address for display through a video interface, an image processor for generating an address of said frame memory, writing data in the frame memory for display based on said generated address, the data being input from an input part of said display screen processed by said controller, and a display processor for generating an address of said frame memory, producing an input from the input part of said display screen stored in said frame memory, based on said generated address, to one of at least two display areas on said display screen and the video signal stored in said frame memory to the other display area of said display screen through a display interface.
Claim 23
Dependent Claim
226 words
A graphics processing device, comprising: a display screen; a controller for generating a hand-written display output; video input means for receiving an input video signal; a memory for storing the input video signal and an output of said controller; and synthesis means for combining the input video signal and the hand-written output of said controller stored in said memory, thereby generating a composite display of the input video signal and the hand-written output of said controller on said display screen, wherein said synthesis means includes: a frame memory, a video processor for generating an address of said frame memory, writing an input video signal in said frame memory based on said generated address for display through a video interface, an image processor for generating an address of said frame memory, writing data in the frame memory for display based on said generated address, the data being input from an input part of said display screen processed by said controller, and a display processor for generating an address of said frame memory, producing an input from the input part of said display screen stored in said frame memory, based on said generated address, to one of at least two display areas on said display screen and the video signal stored in said frame memory to the other display area of said display screen through a display interface.
Claim 24
Dependent Claim
24 words
A graphics processing device according to claim 19, wherein said video processor and said image processor operate independently and in parallel to one another.
Claim 25
Dependent Claim
194 words
A graphic processing device for displaying composite information including hand-written data, graphic data and video data, said display device comprising: (a) a first processor which processes image data including characters and graphics input from an external device, and generates an address of a frame memory for writing said processed data to said memory; (b) a second processor which generates video data input from an external device through a video interface, generates an address of frame memory, and writes the input video data into said frame memory based on said generated address; (c) a third processor which generates an address, reads out information stored in said frame memory based on said generated address and produces composite information to be displayed on a display; (d) a register which sets up an area of said frame memory for storing said characters, said graphics and said video data to be displayed; wherein said frame memory serves as a common memory to be shared among said first processor, said second processor and said third processor, said frame memory being accessed by time sharing through a frame memory interface based on information to be read out therefrom and written therein.
Claim 26
Dependent Claim
194 words
A graphic processing device for displaying composite information including hand-written data, graphic data and video data, said display device comprising: (a) a first processor which processes image data including characters and graphics input from an external device, and generates an address of a frame memory for writing said processed data to said memory; (b) a second processor which generates video data input from an external device through a video interface, generates an address of frame memory, and writes the input video data into said frame memory based on said generated address; (c) a third processor which generates an address, reads out information stored in said frame memory based on said generated address and produces composite information to be displayed on a display; (d) a register which sets up an area of said frame memory for storing said characters, said graphics and said video data to be displayed; wherein said frame memory serves as a common memory to be shared among said first processor, said second processor and said third processor, said frame memory being accessed by time sharing through a frame memory interface based on information to be read out therefrom and written therein.
Claim 27
Dependent Claim
179 words
A graphic processing device for displaying composite information including hand-written data, graphic data and video data, said display device comprising: a first processor which processes image data including characters and graphics input from an external device, generates an address of a frame memory for writing said processed data to said frame memory; a second processor which receives video data input from an external device through a video interface, generates an address of frame memory, and writes the input video data into said frame memory based on said generated address; a third processor which generates an address, reads out information stored in said frame memory based on said generated address and produces composite information to be displayed on a display; and an interface unit which is connected with said first processor, said second processor, said third processor and an external CPU through a signal line; wherein said interface unit arbitrates access from said first processor, said second processor, said third processor and said external CPU to said frame memory based on information to be read out therefrom and written therein.
Claim 28
Dependent Claim
179 words
A graphic processing device for displaying composite information including hand-written data, graphic data and video data, said display device comprising: a first processor which processes image data including characters and graphics input from an external device, generates an address of a frame memory for writing said processed data to said frame memory; a second processor which receives video data input from an external device through a video interface, generates an address of frame memory, and writes the input video data into said frame memory based on said generated address; a third processor which generates an address, reads out information stored in said frame memory based on said generated address and produces composite information to be displayed on a display; and an interface unit which is connected with said first processor, said second processor, said third processor and an external CPU through a signal line; wherein said interface unit arbitrates access from said first processor, said second processor, said third processor and said external CPU to said frame memory based on information to be read out therefrom and written therein.
References Cited (Backward Citations)
US4855813A
Cited
US5027212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-06-28 | 2002-12-28 | 2003-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-06-28 | 2006-12-28 | 2007-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-06-28 | 2010-12-28 | 2011-06-29 | $7700.00 | Window Closed / Lapsed |