CA1329650C - Display device - Google Patents
Display deviceInfo
- Publication number
- CA1329650C CA1329650C CA000491143A CA491143A CA1329650C CA 1329650 C CA1329650 C CA 1329650C CA 000491143 A CA000491143 A CA 000491143A CA 491143 A CA491143 A CA 491143A CA 1329650 C CA1329650 C CA 1329650C
- Authority
- CA
- Canada
- Prior art keywords
- display
- picture
- crt
- frame memory
- display areas
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4112—Peripherals receiving signals from specially adapted client devices having fewer capabilities than the client, e.g. thin client having less processing power or no tuning capabilities
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
- H04N21/4316—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
Abstract
ABSTRACT OF THE DISCLOSURE
A device for displaying pictures in respective display areas separated along a horizontal border line on the screen of a CRT display and has a CPU which sets in a selection value register a value representing the border line. A counter counts a horizontal synchronizing signal and the count value is compared by a comparator with a value set in the selection value register. Then, based on the comparison, a picture based on an inputted video signal and a picture read out from a frame memory are displayed in respective ones of the display areas on the screen of the CRT display.
A device for displaying pictures in respective display areas separated along a horizontal border line on the screen of a CRT display and has a CPU which sets in a selection value register a value representing the border line. A counter counts a horizontal synchronizing signal and the count value is compared by a comparator with a value set in the selection value register. Then, based on the comparison, a picture based on an inputted video signal and a picture read out from a frame memory are displayed in respective ones of the display areas on the screen of the CRT display.
Description
1 329~50 The present invention relates to a display device. More particularly, the present invention relates to a display device in which a dynamic picture and a still picture are displayed simultaneously or selectively on the screen of a CRT display.
Recently, television te~t broadcast has been realized and apparatus for receiving such television text broadcast has been put into practical use. As one form of such television text broadcast, teletext is known. A
technical document well known in the art concerning such teletext receiving apparatus is "LSI circuits for teletext and view data" (THE LUCY GENERATION, Mullard Technical Publication M81-0001).
In the accompanying drawing:-Figure 1 is a schematic block diagram showing a display device in a conventional teletext receiving apparatus; and Figure 2 is a schematic block diagram of an embodiment of the present invention.
Referring to Figure 1, a display device in a conventional teletext receiving apparatus will firstly be described. As shown, a CPU 1 is connected to a frame memory 2 and an offset register 6. The frame memory 2 has a display area corresponding to the screen of a CRT
display 5 and stores picture data to be displayed. The offset register 6 stores the first address of the frame memory 2 provided from the CPU 1. The first address stored in the offset register 6 is supplied to one input of an adder 7, while a read address of the frame memory 2 is supplied to the other input of the adder 7 from a controller 4.
The adder 7 adds up the first address supplied from the offset register 6 and the read address supplied from the controller 4 so as to designate an address in the frame memory 2. A still picture signal A based on the picture data read out from the frame memory 2 for displaying a still picture is supplied to a selector 3.
To the selector 3, a dynamic picture signal B for q~
- ~ 1 329650 displaying a dynamic picture is supplied from the exterior through an input terminal 12. The selector 3 is switched by a selection switch 8 so that either the dynamic picture signal B entered from the input terminal 12 or the still picture signal A based on the picture data read out from the frame memory 2 is supplied to the CRT display 5.
Now, the operation of the display device in the conventional teletext receiving apparatus will be des~ribed. First, the CPU 1 makes the offset register 6 store the address corresponding to the first scanning line of the screen of the CRT display 5. The adder 7 adds up the address stored in the offset register 6 and the read address supplied from the controller 4 so as to designate addresses in the frame memory 2 corresponding to the first scanning line of the screen. In response to the designation of the addresses, the frame memory 2 reads out successively a still picture signal A. The still picture signal A is supplied to the selector 3.
On the other hand, in synchronism with the still picture signal A read out from the frame memory 2, the dynamic picture signal B entered from the exterior through the input terminal 12 is supplied to the selector 3.
Either the still picture signal A or the dynamic picture signal B is selected by the selector 3 according to the swit~hing of the selection switch 8. Thus, the selected one of the pictures, namely, either the still picture or the dynamic picture is displayed on the-CRT display 5.
In the display device shown in Figure 1, if the selection switch 8 selects the still picture signal A, the adder 7 adds to or subtracts from the first address stored in the offset register 6, the address from the controller ~, whereby the first address value read out of the frame memory 2 can be changed according to the screen for display and thus, display can be made on a scrolled screen.
However, the above stated display device can only display, by selection, either a dynamic picture or a still picture on the CRT display 5 but cannot display 3 ` 1 329650 simultaneously a dynamic picture and a still picture in divided areas on the CRT display 5. As a result, the above stated conventional display device has a drawback in that a dynamic picture and still picture associated with each other cannot be displayed simultaneously so that a viewer may compare or examine them.
It is accordingly an object of the present invention to provide a display device in which a still picture and a dynamic picture can be displayed in display areas on a CRT display and in which a scrolled picture can be displayed in the still picture display area.
Briefly stated, in the present invention, a value representing a horizontal border line horizontally dividing display areas on the screen of the CRT display is determined in advance by setting means so that pictures may be displayed in separate display areas. Then, a synchronizing signal is counted and the count value and a value set by the setting means are compared. In response to the comparison output signal, the screen of the CRT
display is horizontally divided into the display areas, so that a picture based on a video signal applied to an input terminal and a picture based on the picture data read out from a frame memory are selected by selecting means and displayed in the divided areas on the CRT display.
Consequently, according to the present invention, display areas on the screen of the CRT display are divided and a video signal based on a picture to be displayed on a divided display area is selected according to the data representing the horizontal border line of the divided display areas and thus, a dynamic picture and a still picture can be displayed simultaneously in the divided display areas. In addition, only the still picture can be scrolled in its display area and accordingly, the display function can be improved, which will lead to wider utilization.
The invention will be more readily understood from the following description of the preferred embodiment thereof illustrated by way of example in Figure 2.
In Figure 2, the CPU 1, the frame memory 2, the selector 3, the offset register 6 and the adder 7 are the same as shown in Figure 1. The controller 4 is structured so as to generate a horizontal synchronizing signal in synchronism with a video signal based on the picture data read out from the frame memory 2. The horizontal synchronizing signal generated from the controller 4 is supplied to~the counter 9.
The counter 9 counts the horizontal synchronizing signal and supplies the count output to the comparator 11. The selection value register 10 stores a selection value representing a horizontal border line of the display areas divided hori~ontally on the screen of the CRT display 5. This selection value is supplied from the CPU 1 to the selection value register 10. The selection value stored in the selection value register 10 is supplied to the comparator 11. The comparator 11 compares the selection value supplied from the selection value register 10 with the count output from the counter 9 and provides the output of comparison to the selector 3.
The selector 3 divides display areas on the screen of the CRT display 5 based on the output of comparison from the comparator 11, so that a picture based on the still picture signal A read out from the frame memory 2 is displayed in one of the divided display areas and a picture based on the dynamic picture signal B entered through the input terminal 12 is displayed in the other display area.
In the following, the operation of a display device in accordance with the preferred embodiment of the present invention will be described.
The CPU 1 stores the selection value in the selection value register 10 and stores the first address of the frame memory 2 in the offset register 6. The first address of the frame memory 2 stored in the offset register 6 is supplied to the adder 7. The adder 7 adds the read address supplied from the controller 4 to the i 1 32~650 first address so as to designate successively addresses of the frame memory 2.
The controller 4 generates the horizontal synchronizing signal and supplies it to the counter 9.
The counter 9 counts the horizontal synchronizing signal and supplies the count output to the comparator 11. The comparator 11 compares the count value C of the counter 9 with the selection value D stored in the selection value register 10 and based on the output of comparison, the selector 3 is controlled so that a dynamic picture and a still picture are displayed respectively in the two different display areas on the screen of the CRT display 5.
More specifically, in case where the count value C of the counter 9 is smaller than the selection value D, the selection signal S from the comparator 11 is S=l. The selector 3 selects the dynamic picture signal B entered from the input terminal 12 based on the selection signal S=l and supplies the dynamic picture signal B to the CRT
display. As a result, in the upper display area on the screen of the CRT display 5, a dynamic picture based on the dynamic picture signal B is displayed. When the counter 9 counts the horizontal synchronizing signal and the count value C of the counter 9 becomes larger than the selection value D, the selection signal from the comparator 11 is S=0. Then, based on the selection signal S=0, the selector 3 selects the still picture signal A
read out from the frame memory 2 so that a still picture based on the still picture signal A is displayed in the lower display area on the screen of the CRT display 5.
Thus, a dynamic picture and a still picture are displayed simultaneously in the respective display areas divided .orizontally on the screen of the CRT display 5.
The horizontal synchronizing signal counted by the counter 9 can be separated in synchronism directly from the video signal entered from the exterior through the input terminal 12.
Although in the above described embodiment, the screen of the CRT display 5 is divided into two display areas with a comparator 11 and a selection value register 10 being provided, a plurality of comparators 11 and selection value registers 10 may be provided and in this case, by applying the count value of the horizontal synchronizing signal to the respective comparators 11 and storing different selection values in the selection value registers 10, different pictures can be displayed in a plurality of display areas divided on the screen of the CRT display 5.
In addition, although in the above-described embodiment, the selector 3 selects the dynamic picture signal B with the relation between the count value C of the counter 9 and the selection value D of the selection value register 10 being C<D and selects the still picture signal A with the relation being C>D, the selector 3 may select, on the contrary, ~he dynamic picture signal B with the relation of C>D and the still picture signal A with the relation of C<D.
Although a preferred embodiment of the present : invention has been described and illustrated in detail, it is clearly understood that the same is given by way of illustration and example only and is not to be taken by way of limitation, the spirit and scope of the present invention being limited only by the terms of the appended claims.
i
Recently, television te~t broadcast has been realized and apparatus for receiving such television text broadcast has been put into practical use. As one form of such television text broadcast, teletext is known. A
technical document well known in the art concerning such teletext receiving apparatus is "LSI circuits for teletext and view data" (THE LUCY GENERATION, Mullard Technical Publication M81-0001).
In the accompanying drawing:-Figure 1 is a schematic block diagram showing a display device in a conventional teletext receiving apparatus; and Figure 2 is a schematic block diagram of an embodiment of the present invention.
Referring to Figure 1, a display device in a conventional teletext receiving apparatus will firstly be described. As shown, a CPU 1 is connected to a frame memory 2 and an offset register 6. The frame memory 2 has a display area corresponding to the screen of a CRT
display 5 and stores picture data to be displayed. The offset register 6 stores the first address of the frame memory 2 provided from the CPU 1. The first address stored in the offset register 6 is supplied to one input of an adder 7, while a read address of the frame memory 2 is supplied to the other input of the adder 7 from a controller 4.
The adder 7 adds up the first address supplied from the offset register 6 and the read address supplied from the controller 4 so as to designate an address in the frame memory 2. A still picture signal A based on the picture data read out from the frame memory 2 for displaying a still picture is supplied to a selector 3.
To the selector 3, a dynamic picture signal B for q~
- ~ 1 329650 displaying a dynamic picture is supplied from the exterior through an input terminal 12. The selector 3 is switched by a selection switch 8 so that either the dynamic picture signal B entered from the input terminal 12 or the still picture signal A based on the picture data read out from the frame memory 2 is supplied to the CRT display 5.
Now, the operation of the display device in the conventional teletext receiving apparatus will be des~ribed. First, the CPU 1 makes the offset register 6 store the address corresponding to the first scanning line of the screen of the CRT display 5. The adder 7 adds up the address stored in the offset register 6 and the read address supplied from the controller 4 so as to designate addresses in the frame memory 2 corresponding to the first scanning line of the screen. In response to the designation of the addresses, the frame memory 2 reads out successively a still picture signal A. The still picture signal A is supplied to the selector 3.
On the other hand, in synchronism with the still picture signal A read out from the frame memory 2, the dynamic picture signal B entered from the exterior through the input terminal 12 is supplied to the selector 3.
Either the still picture signal A or the dynamic picture signal B is selected by the selector 3 according to the swit~hing of the selection switch 8. Thus, the selected one of the pictures, namely, either the still picture or the dynamic picture is displayed on the-CRT display 5.
In the display device shown in Figure 1, if the selection switch 8 selects the still picture signal A, the adder 7 adds to or subtracts from the first address stored in the offset register 6, the address from the controller ~, whereby the first address value read out of the frame memory 2 can be changed according to the screen for display and thus, display can be made on a scrolled screen.
However, the above stated display device can only display, by selection, either a dynamic picture or a still picture on the CRT display 5 but cannot display 3 ` 1 329650 simultaneously a dynamic picture and a still picture in divided areas on the CRT display 5. As a result, the above stated conventional display device has a drawback in that a dynamic picture and still picture associated with each other cannot be displayed simultaneously so that a viewer may compare or examine them.
It is accordingly an object of the present invention to provide a display device in which a still picture and a dynamic picture can be displayed in display areas on a CRT display and in which a scrolled picture can be displayed in the still picture display area.
Briefly stated, in the present invention, a value representing a horizontal border line horizontally dividing display areas on the screen of the CRT display is determined in advance by setting means so that pictures may be displayed in separate display areas. Then, a synchronizing signal is counted and the count value and a value set by the setting means are compared. In response to the comparison output signal, the screen of the CRT
display is horizontally divided into the display areas, so that a picture based on a video signal applied to an input terminal and a picture based on the picture data read out from a frame memory are selected by selecting means and displayed in the divided areas on the CRT display.
Consequently, according to the present invention, display areas on the screen of the CRT display are divided and a video signal based on a picture to be displayed on a divided display area is selected according to the data representing the horizontal border line of the divided display areas and thus, a dynamic picture and a still picture can be displayed simultaneously in the divided display areas. In addition, only the still picture can be scrolled in its display area and accordingly, the display function can be improved, which will lead to wider utilization.
The invention will be more readily understood from the following description of the preferred embodiment thereof illustrated by way of example in Figure 2.
In Figure 2, the CPU 1, the frame memory 2, the selector 3, the offset register 6 and the adder 7 are the same as shown in Figure 1. The controller 4 is structured so as to generate a horizontal synchronizing signal in synchronism with a video signal based on the picture data read out from the frame memory 2. The horizontal synchronizing signal generated from the controller 4 is supplied to~the counter 9.
The counter 9 counts the horizontal synchronizing signal and supplies the count output to the comparator 11. The selection value register 10 stores a selection value representing a horizontal border line of the display areas divided hori~ontally on the screen of the CRT display 5. This selection value is supplied from the CPU 1 to the selection value register 10. The selection value stored in the selection value register 10 is supplied to the comparator 11. The comparator 11 compares the selection value supplied from the selection value register 10 with the count output from the counter 9 and provides the output of comparison to the selector 3.
The selector 3 divides display areas on the screen of the CRT display 5 based on the output of comparison from the comparator 11, so that a picture based on the still picture signal A read out from the frame memory 2 is displayed in one of the divided display areas and a picture based on the dynamic picture signal B entered through the input terminal 12 is displayed in the other display area.
In the following, the operation of a display device in accordance with the preferred embodiment of the present invention will be described.
The CPU 1 stores the selection value in the selection value register 10 and stores the first address of the frame memory 2 in the offset register 6. The first address of the frame memory 2 stored in the offset register 6 is supplied to the adder 7. The adder 7 adds the read address supplied from the controller 4 to the i 1 32~650 first address so as to designate successively addresses of the frame memory 2.
The controller 4 generates the horizontal synchronizing signal and supplies it to the counter 9.
The counter 9 counts the horizontal synchronizing signal and supplies the count output to the comparator 11. The comparator 11 compares the count value C of the counter 9 with the selection value D stored in the selection value register 10 and based on the output of comparison, the selector 3 is controlled so that a dynamic picture and a still picture are displayed respectively in the two different display areas on the screen of the CRT display 5.
More specifically, in case where the count value C of the counter 9 is smaller than the selection value D, the selection signal S from the comparator 11 is S=l. The selector 3 selects the dynamic picture signal B entered from the input terminal 12 based on the selection signal S=l and supplies the dynamic picture signal B to the CRT
display. As a result, in the upper display area on the screen of the CRT display 5, a dynamic picture based on the dynamic picture signal B is displayed. When the counter 9 counts the horizontal synchronizing signal and the count value C of the counter 9 becomes larger than the selection value D, the selection signal from the comparator 11 is S=0. Then, based on the selection signal S=0, the selector 3 selects the still picture signal A
read out from the frame memory 2 so that a still picture based on the still picture signal A is displayed in the lower display area on the screen of the CRT display 5.
Thus, a dynamic picture and a still picture are displayed simultaneously in the respective display areas divided .orizontally on the screen of the CRT display 5.
The horizontal synchronizing signal counted by the counter 9 can be separated in synchronism directly from the video signal entered from the exterior through the input terminal 12.
Although in the above described embodiment, the screen of the CRT display 5 is divided into two display areas with a comparator 11 and a selection value register 10 being provided, a plurality of comparators 11 and selection value registers 10 may be provided and in this case, by applying the count value of the horizontal synchronizing signal to the respective comparators 11 and storing different selection values in the selection value registers 10, different pictures can be displayed in a plurality of display areas divided on the screen of the CRT display 5.
In addition, although in the above-described embodiment, the selector 3 selects the dynamic picture signal B with the relation between the count value C of the counter 9 and the selection value D of the selection value register 10 being C<D and selects the still picture signal A with the relation being C>D, the selector 3 may select, on the contrary, ~he dynamic picture signal B with the relation of C>D and the still picture signal A with the relation of C<D.
Although a preferred embodiment of the present : invention has been described and illustrated in detail, it is clearly understood that the same is given by way of illustration and example only and is not to be taken by way of limitation, the spirit and scope of the present invention being limited only by the terms of the appended claims.
i
Claims (8)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A display device for displaying pictures on display areas of a CRT display, comprising:
an input terminal for receiving an externally generated video signal for display on the CRT;
a frame memory for storing separate picture data to be displayed on the CRT;
counting means for counting a synchronizing signal;
setting means for setting in advance a value representing a horizontal border line separating the display areas divided on a screen of said CRT display, so that pictures may be displayed in respective separate display areas;
comparing means for comparing a count value of said counting means and the value set by said setting means; and selecting means responsive to an output comparison signal of said comparing means for dividing the display areas of the screen of said CRT display along the horizontal border line and for selecting and displaying in the respective display areas a picture based on the externally generated video signal received by said input terminal and a picture based on the separate picture data read out from said frame memory.
an input terminal for receiving an externally generated video signal for display on the CRT;
a frame memory for storing separate picture data to be displayed on the CRT;
counting means for counting a synchronizing signal;
setting means for setting in advance a value representing a horizontal border line separating the display areas divided on a screen of said CRT display, so that pictures may be displayed in respective separate display areas;
comparing means for comparing a count value of said counting means and the value set by said setting means; and selecting means responsive to an output comparison signal of said comparing means for dividing the display areas of the screen of said CRT display along the horizontal border line and for selecting and displaying in the respective display areas a picture based on the externally generated video signal received by said input terminal and a picture based on the separate picture data read out from said frame memory.
2. A display device in accordance with claim 1, wherein said frame memory includes a storing area for storing the picture data of the still picture, the video signal received by said input terminal includes a signal for displaying the dynamic picture, and said selecting means includes means for displaying selectively the dynamic picture and the still picture on said CRT display based on the output signal of said comparing means.
3. A display device for displaying pictures on display areas of a CRT display as recited in claim 1, wherein said picture data are displayed on first and second sections of the screen of said CRT;
said selecting means being further operable for receiving said externally generated video signal from said input terminal and said picture data from said frame memory, and further operable for providing to said respective first and second divided display areas of said CRT display a first picture based on said video signal from said input terminal and a second picture based on the data from said frame memory.
said selecting means being further operable for receiving said externally generated video signal from said input terminal and said picture data from said frame memory, and further operable for providing to said respective first and second divided display areas of said CRT display a first picture based on said video signal from said input terminal and a second picture based on the data from said frame memory.
4. A display apparatus for displaying dynamic video images and substantially static video images on separate areas of a single CRT display, comprising:
first means for receiving a first video signal representing a dynamic video image;
memory means for storing picture data of a substantially static image, and for reading out the picture data to form a second video signal;
display dividing means for dividing a display area of said CRT display into a plurality of display areas each containing at least one display element; and selecting means for selecting and displaying in respective first and second display areas a dynamic picture based on the first video signal received by said first means, and a substantially static picture based on the second video signal of picture data read out from said frame memory, said selecting means being responsive to a comparison between a count of a synchronising signal and a predetermined value.
first means for receiving a first video signal representing a dynamic video image;
memory means for storing picture data of a substantially static image, and for reading out the picture data to form a second video signal;
display dividing means for dividing a display area of said CRT display into a plurality of display areas each containing at least one display element; and selecting means for selecting and displaying in respective first and second display areas a dynamic picture based on the first video signal received by said first means, and a substantially static picture based on the second video signal of picture data read out from said frame memory, said selecting means being responsive to a comparison between a count of a synchronising signal and a predetermined value.
5. A display apparatus as recited in claim 4, wherein said display dividing means includes means for dividing said display area of said CRT display into at least two display areas separated by a horizontal border line.
6. A display apparatus as recited in claim 5, wherein said means for dividing comprises storing means for storing said predetermined value representing a location of the horizontal border line on said CRT display.
7. A display apparatus as recited in claim 6, wherein said selecting means comprises comparing means for comparing said predetermined value stored in said storing means with said count value representing a location of a display element and for providing an output signal indicative thereof.
8. A display apparatus as recited in claim 7, wherein said selecting means further comprises switching means connected to receive said output signal of said comparing means, said switching means responding to said output signal by switching a respective one of said first and second video signals to be displayed in a respective one of said first and second display areas.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP215654/1984 | 1984-10-15 | ||
| JP59215654A JPS6194479A (en) | 1984-10-15 | 1984-10-15 | Display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1329650C true CA1329650C (en) | 1994-05-17 |
Family
ID=16675971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000491143A Expired - Fee Related CA1329650C (en) | 1984-10-15 | 1985-09-19 | Display device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS6194479A (en) |
| CA (1) | CA1329650C (en) |
| FR (1) | FR2571882B1 (en) |
| GB (1) | GB2165719B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01246978A (en) * | 1988-03-28 | 1989-10-02 | Toshiba Corp | Picture information receiving and displaying device |
| JP2829962B2 (en) * | 1988-04-28 | 1998-12-02 | 松下電器産業株式会社 | Television receiver |
| JPH0254688A (en) * | 1988-08-19 | 1990-02-23 | Toshiba Corp | Color television receiver with built-in teletext receiver |
| US5117226A (en) * | 1989-06-27 | 1992-05-26 | Samsung Electronics Co., Ltd. | Circuit for generating a scroll window signal in digital image apparatus |
| KR960009528B1 (en) * | 1991-01-08 | 1996-07-20 | Samsung Electronics Co Ltd | 2 signal simultaneous display circuit & method through screen division |
| IT1245403B (en) * | 1991-01-31 | 1994-09-20 | Sisvel Spa | PERFECTED RECEIVER OF TELETEXT TRANSMISSIONS |
| JPH07203328A (en) * | 1993-12-28 | 1995-08-04 | Nec Corp | Display device |
| JPH0993548A (en) * | 1995-09-27 | 1997-04-04 | Toshiba Corp | Television receiver with teletext information display function |
| DE69622809T2 (en) * | 1995-09-29 | 2002-11-28 | Matsushita Electric Ind Co Ltd | TV receivers for teletext |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3758712A (en) * | 1972-03-27 | 1973-09-11 | Sarkes Tarzian | Digital special effects generator |
| JPS53144622A (en) * | 1977-05-24 | 1978-12-16 | Sony Corp | Video signal processing system |
| JPS6031390B2 (en) * | 1978-05-12 | 1985-07-22 | 日本電気株式会社 | special effects equipment |
| FR2517916B1 (en) * | 1981-12-04 | 1986-01-17 | Thomson Csf | STEREOSCOPIC VISUALIZATION APPARATUS FOR USE WITH A HELMET VIEWFINDER |
-
1984
- 1984-10-15 JP JP59215654A patent/JPS6194479A/en active Pending
-
1985
- 1985-09-19 CA CA000491143A patent/CA1329650C/en not_active Expired - Fee Related
- 1985-10-15 GB GB08525338A patent/GB2165719B/en not_active Expired
- 1985-10-15 FR FR858515261A patent/FR2571882B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| FR2571882B1 (en) | 1990-11-02 |
| JPS6194479A (en) | 1986-05-13 |
| GB8525338D0 (en) | 1985-11-20 |
| GB2165719A (en) | 1986-04-16 |
| FR2571882A1 (en) | 1986-04-18 |
| GB2165719B (en) | 1988-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed | ||
| MKLA | Lapsed |
Effective date: 19970520 |