JPS62163479A - Video tex display device - Google Patents

Abstract

PURPOSE:To execute easily a display of a one-plane large picture by plural pieces of indicators corresponding to each decoder, by constituting the titled device so that coordinates of an original data are enlarged and converted to plural pieces of decoders, and thereafter, encoding for supplying. CONSTITUTION:A controller 1 being an information generating means converts an original data from the inside or the outside to prescribed enlarged coordinates information in accordance with plural pieces of decoders, respectively, and thereafter, encodes it, and outputs it by putting an ID of each decoder. Plural pieces of decoders 3A-3I which are connected in series decode ordinarily said enlarged image data which is inputted, without being conscious of the enlargement. Plural pieces of indicators 4A-4I which have been provided in accordance with each decoder display output information from each decoder, respectively. In such a way, an enlarged image can be obtained easily by plural pieces of indicators 4A-4I.

Description

[Detailed description of the invention] The present invention will be explained in the following order.

A. Field of industrial application B. Outline of the invention C. Conventional technology D. Problems to be solved by the invention E. Means for solving the problems (Fig. 1) F. Effect G. Example G1 circuit configuration (Fig. 1 - Figure 3) Enlarged/reduced display of G2@ plane (Figures 4 and 5) G3 enlarged data conversion
(Figures 6 and 7) G4 bezel correction (Figures 8 and 89) GslD number assignment (Figures 10 and 11)
Figure) G6 external synchronization (Figures 12 and 13) G
7 Flow Control (Figures 14 and 15)H Effects of the InventionA Field of Industrial ApplicationThe present invention provides a videotex display device suitable for use when enlarging and displaying videotex information on a plurality of displays, etc. Regarding.

B Invention 1a91;! This invention provides an information generating means that generates information based on internal or external data, which converts the coordinates of original data into predetermined enlarged coordinate information corresponding to a plurality of decoders arranged in series. The image is then encoded, and the encoded enlarged coordinate information is supplied to a plurality of decoders, respectively, and enlarged and displayed on the corresponding display, thereby making it possible to easily obtain an enlarged image.

C. Conventional technology Recently, department stores, shopping centers, station concourses,
Many multi-screen systems are installed at show venues to attract customers. These multi-screen systems are
Generally, a digitizer, multiple VTRs, disk players, etc. are used to capture a single analog video signal, digitally process the captured analog video signal, and then convert it into multiple analog video signals, each of which can be displayed on multiple displays. I'm trying to type it in.

D Problems to be Solved by the Invention However, in the case of the conventional system as described above, multiple VT
R and disc players are expensive because they require the use of particularly expensive digitizers, and they also have disadvantages, such as the need to reshoot video to update display information, which takes time.

The present invention has been made in view of the above points, and an object thereof is to provide an inexpensive videotex display device that can easily enlarge and display videotex information on a plurality of displays.

E. Means for Solving the Problems The Videotex device according to the present invention has information generating means (for generating information based on internal or external data).
1), a plurality of decoders (3A) to (3I) arranged in series with respect to the information generating means (1), and a plurality of decoders provided corresponding to the plurality of decoders. Displays (48) to (4I), information generation means +1
1, the coordinates of the original data are converted into multiple decoders (38).
Corresponding to ~(3■), each is converted into predetermined enlarged coordinate information and then encoded, and the encoded expanded coordinate information is supplied to a plurality of decoders (38) to (3■), respectively.
The display device corresponding to the decoder is configured to perform enlarged display.

F In the controller (1) as action information generating means, the coordinates of the original data are converted into predetermined enlarged coordinate information corresponding to a plurality of decoders arranged in series and then encoded, and the encoded enlarged coordinates are encoded. Multiple decoders (3^) to (3I) by attaching the ■D number of each decoder to the information
supply each. And multiple decoders (3A) ~ (
By decoding normally without being conscious of enlargement with 3I), the corresponding multiple displays (4^) to (4■)
The enlarged image will be displayed.

G. Example Hereinafter, an example of the present invention will be described in detail based on FIGS. 1 to 15.

01 Circuit Configuration FIG. 1 shows the overall configuration of this embodiment. In the figure, (1) is a controller as an information generating means that generates information based on internal or external data, A keyboard (2) and a printer (not shown) are connected. The controller (1) is a communication
ICATION (hereinafter referred to as COM) boat and auxiliary (
AtlXILIARY (hereinafter referred to as AUX) boat, the 00M boat receives internal/external databases, performs signal processing, and then transmits from the AUX boat.

A plurality of decoders (3^) to (3I), for example, nine decoders, are provided in series with the controller (1),
Each decoder (3A) to (3I) is 00M boat, AU
Has an X boat. The 00M port of the decoder (38) is interconnected with the AUX port of the controller (1), and the AUX port of the decoder (3Δ) is connected to the 0M port of the decoder (3B).
Interconnected with 0M boat and AUX of decoder (3B)
The port is interconnected with the C0M port of the decoder (3C), and the AUX port of the decoder (3C) is interconnected with the C0M port of the decoder (3C).
) is interconnected with the C0M port of the controller (11) and the subsequent decoder (3I) is interconnected in the same manner, and is substantially connected in series from the controller (11 to the i & later decoder (3I), so that bidirectional transmission can be performed between each 00M boat and the AUX boat. is being done.

In addition, the display (
4^) ~ (4I) are provided, and these indicators (4^)
The outputs of the decoders (3^) to (3I) are supplied to the decoders (3^) to (4I), respectively. In other words, in this case, using the mxn screen configuration as an example, 3x3 (9) displays (4A) to (41)
This is the case when it is formed using

For example, the controller (11) may have a configuration as shown in FIG.
0) is a central processing unit (hereinafter referred to as CPU),
For this CPU (10), the system ROM (11
), work RAM (12), video RAM (1
3) A color palette memory (14), an I10 interface (15) and a floppy disk interface (16) are provided. I10 interface (15
) is provided with the above-mentioned 00M port and AUX port, and this I10 interface (15) generates a synchronization control signal for synchronizing each decoder as described later.

A D/A conversion circuit (17) is provided on the output side of the display video RAM (13) and color palette memory (14). Further, a CRT controller (30) is provided for the CPU (10), and this CRT controller (3
0) is D/D in response to the drawing command from the CPU (10).
A drawing instruction is given to the A conversion circuit (17). And D/A
The signal D/A converted by the conversion circuit (17) is processed by the video signal processing circuit (18) to form R, G, and B color signals, which are supplied to the display (19). The address position of the video RAM (13) and the display (19)
There is a one-to-one correspondence with the pixel positions on the screen.

The decoders (3A) to (3) may have a configuration as shown in FIG. In other words, in the same figure, (
20) is a CPU, and this CPLI (20) has a system ROM (21) and a work RAM (22).
), a video RAM (23), a color palette memory (24) and an I10 interface (25). The I10 interface (25) is provided with the above-mentioned 00M boat and AUX boat, and this
The above-mentioned synchronous control signal is supplied to the 10 interface (25).

A D/A conversion circuit (26) is provided on the output side of the display video RAM (23) and color palette memory (24). Further, a CRT controller (40) is provided for the CPU (20).
0) is D/D in response to a drawing command from the CPU (20).
A drawing instruction is given to the A conversion circuit (26). And D/A
The signal D/A converted by the conversion circuit (26) is processed by a video signal processing circuit (not shown) to become R, G, and B color signals and displayed on one of the corresponding displays (4A) to (4). supplied to. In other words, the configuration of the decoder is the controller (
It can have the same configuration as 11, and of course has an i10 interface (
25) may be provided with a keyboard, printer, etc.

G2 Screen Enlargement/Reduction Display Next, the enlargement/reduction display of the screen will be explained with reference to FIGS. 4 and 5. First, the program is started in step (a), and the CPU (10) reads out a drawing command consisting of a bit string written to the disk (not shown) via the floppy disk interface (16) and stores it in the work RAM (12). In step (b), the operands of the drawing command are analyzed to calculate the logical (on the unit screen) Find the value of. Next, multiply the coordinates P (x, y) obtained in step (c) by α (however,
α is the scaling factor and α≧0), X=αx, Y=
Coordinates P' (X, Y) of the result of scaling from αy
seek.

Determine whether the value of
Proceed to step (g) and finish.

If 0≦X≦1, proceed to step (E), judge whether the value of Y obtained here is 0≦Y≦1, and 0≦Y≦
If it is not 1, drawing cannot be performed, so proceed to step (g) and end. If 0≦Y≦1, the process advances to step (to) and the coordinate information is written to an address at a predetermined position in the bidet and tRAM (13).

At this time, the address V of the predetermined position of the video RAM (13)
-RAMadd is V-RAMadd as shown in Figure 5B.
It is determined by +α to d−αyXma. In other words, FIG.
), X max represents, for example, 256 pixels, Y max represents 200 (lit!) pixels, and in FIG. Point P' is the position where the scaled coordinates are drawn.

The scaling coordinate information written in the video RAM (13) in this way is read out under the control of the CRT controller (30), and information representing color intensity from the color palette memory (14) is added. is D/A converted by the D/A conversion circuit (17) and sent to the video signal processing circuit (18).
) is supplied to R, G.

A B color signal is formed and displayed on the display (19).

Further, the enlargement/reduction t+'f information read from the video RAM (13) is 10(+l!ili) corresponding to each decoder.
I10 interface (15
) are jointly supplied to decoders (38) to (3I) from the AUX port. Each decoder (3A) to (3I) takes in information to which its own ID number is added, decodes it, and displays it on the corresponding display device (4A) to (4I).

As a result, if the information given to all decoders (38) to (3I) is enlarged information, displays (4A) to (4)
) can be used to obtain a single screen, and if it is reduced information, the same single screen can be obtained on each of the displays (48) to (4I). Of course, other display methods are also free, such as display (48), (4B), (4D), and (4D).
It is also possible to combine the middle side and a single screen by displaying the middle side using 4E) and displaying the other sides as a single screen, or to insert a single screen after displaying the - side large double-sided display.

Furthermore, while the - side large screen is being displayed on the displays (4A) to (4), it is also possible to monitor a single screen on the display (19) of the controller (1).

G3 Enlarged Data Conversion Next, the case of converting original data into enlarged display data corresponding to each decoder will be explained with reference to FIGS. 6 and 7. First, the program is started in step (a), the drawing command consisting of a bit string written on the disk via the floppy disk interface (16) is read out and expanded to the work RAM (12), and the drawing command is executed in step (b). The logical X-Y coordinates are calculated by analyzing the operands of P (x, y), and the value of P (x, y) is determined.

Next, in step (c), P' (nx-4+ my-j
) to find the enlarged X-Y coordinates. This is data for an (i, j) decoder with an n (horizontal) x m (vertical) screen configuration. i and j are i=Q~n-1, j=θ~m-
It is 1. Then, in step (d), P' (nx-
i+my-j) to encode the drawing command. In other words, the enlarged X-Y coordinates are returned to normal drawing commands. As a result, the decoder side can obtain an enlarged display by decoding normally without being aware of enlargement.

Determine whether all (i, j) have been calculated in step (E), that is, whether the enlarged display data has been converted for all decoders. If the calculation has not been performed, proceed to step (i). ," and repeat the same operation as described above. When all (i, j) have been calculated, the program proceeds to step (g) and ends the program.

By the way, n=3. Data conversion for three times enlarged display will be explained with m=3 using FIG. In Figure 7, ■～0
corresponds to decoders (3A) to (3X), and (i, j)
1 is 0.1.2, j is 0.1°2, the decoder of ■ is (0,0), the decoder of ■ is (1,0), the decoder of ■ is (2,0), ■ The decoder for ■ is (0,1), the decoder for ■ is (1°1), the decoder for ■ is (2,1), the decoder for ■ is (0,2), the decoder for ■ is (1,2), ■
The decoder of is expressed as (2,2). And P′(n
x-4+my-j), the coordinates P(
x, y) is transformed for each decoder as follows.

(Decoder of Φ...P' (3x, 3y) Decoder of ■P' (3x-1, 3y) Decoder of ■...P' (3x-2, 3y) Decoder of ■
...P' (3x+3y4)■decoder...
Decoder for P' (3x-L 3y-1)...
Decoder of P' (3x-2, 3y-1)...P
'(3x, 3y-2)■decoder...P'
(3x-1, 3y-2)■ Decoder...P'
(3x-2, 3y-2) Therefore, the drawing command to draw a line from (Xl, yt) toward (X21 y2) is for the decoder (3) from (3xz, 3yt) to (
From (3x-L 3y) to (3X2
-1°3y2) corresponds to the line from (3X1-2.3y1-2) to (3X2-2.3V2-2) for the decoder of line (3).

Here, the relationship between the ID number and the decoder (t, j) is expressed as ID=jn+i. For example, the decoder for (0, O) is O (decoder for ■), the decoder for (1, 0) is 1 (decoder for ■), the decoder for (2, 2) is 8 (decoder for ■), etc. .

G4 Bezel Correction Now, when one screen is displayed on multiple displays, the frame (bezel) of the display becomes a problem, and it is desirable to have multiple displays so that even if there is this frame, there is no frame. I want to display the screen with . That is, when a single screen is displayed using a plurality of display devices, a difference in level inevitably occurs between the frames of adjacent display devices, and the displayed screen becomes unnatural. A method for solving this problem will now be described with reference to FIGS. 8 and 9. First, start the program in step (a), read out the coordinates written as a bit string on the disk via the floppy disk interface (16), expand it to the work RAM (12), and issue a drawing command in step (b). Analyze the operands of logical x-y
Calculate the coordinates and find the value of P (x, y).

Find the X-Y coordinates enlarged by α α. Here, α is the display rate and has the relationship O≦α≦1. This X-Y coordinate is data for an (i, J) decoder with an nxm screen configuration. Then, in step (d), find □).

Next, in step (e), determine whether all (t, j) have been calculated, that is, whether the above coordinates have been obtained for all decoders. If not, proceed to step (v). , change the value of j and repeat the same operation as above. Then, when all (1°) have been calculated, the program proceeds to step (g) and ends.

In connection with the operation shown in FIG. 8, the display state of the display on the decoder side will be explained using FIG. 9. In FIG. 9, a is a physical display area that can be displayed on the display, and b is a frame of the display that includes data and a bezel portion. Therefore, FIG. 9 shows two displays with adjacent frames. When the X-Y coordinate P (X, y) is determined in step (b) of FIG. 8, it is displayed within the display area a of the display device on the decoder side. Further, C represents a straight line drawn within the two display areas ki3ia. Step (c) in Figure 8
When the enlarged X-Y coordinates are obtained, they are displayed within the enlarged virtual display frame shown by the broken line d in FIG. 9A, although not shown. Then, this enlarged virtual display frame is displayed in step (d) of the origin direction as shown in 9th [IB].
These are the coordinates found in . Then, as can be seen from FIG. 9B, the virtual display frame almost matches the actual frame. At this time, the straight line C shown in FIG.
In Figure B, it is displayed at a slightly lower position. However, the linearity of the straight line C in the left display area and the straight line C in the right display area is maintained. In other words, there is no difference in level between the frames of adjacent display devices.

Next, the procedure for allocating ID #h to each decoder will be explained with reference to FIGS. 10 and 11. First, start the program in step (a), and start the decoder (3) in step (b).
＾) is from the controller (1) as shown in Figure 10.
Check whether the D-allocation data sequence is being sent. In step (c), the decoder (3A) determines whether the information assignment sent from the controller (1) is a data sequence, and if not, it proceeds to step (to) and ends the program. , if so, set the ID number included in the data sequence to its own ID#
? Save it as a number. Then it is initialized.

Next, the decoder (3Δ) increments its own ID number by one in step (e), and the next stage decoder (3B)
The ID number is output to the AUX boat, and the program ends at step (to).

Similarly, the decoder (3B) stores the ID number supplied from the decoder (3A) as its own ID number, and is initialized. Then, the decoder (3B) increments its own ID number by one and outputs it to the AUX boat as the ID number of the next stage decoder (3C). Below (30)
Similar operations are performed sequentially for decoders (3) to (3), and the assignment of ID numbers to all decoders (38) to (3I) is completed.

G6 External Synchronization Next, when external synchronization is applied to each decoder, the case where the decoders (38) to (3) are simultaneously driven by the synchronization control signal from the controller (1) is shown in Figures 12 and 13. This will be explained with reference to the figures. Figure 12 shows controller 1
In the operation of 1), Figure 13 shows the decoders (3A) to (3■)
This is the operation. First, the program is started in step (A), and in step (B), the controller (1) sets the synchronous control signal output from the I10 interface (15) to one level, for example, low level. Controller (1) is decoder (3A) to (3I)
Send all data to. In step (d), the controller (1) sets the synchronous control signal output from the I10 interface (15) to the other level, for example, high level, after all data transmission is completed. End the program at step (e).

On the other hand, each of the decoders (3A) to (3I) starts a program in step (a), and receives data from the 00M boat in step (b). In step (c), the received data is output to the AUX port.

In step (d), the I10 ink of controller (1)
It is determined whether or not the synchronous control signal supplied from the interface (15) to the I10 interface (25) of each decoder is at a high level. If the level is the same, proceed to step (e) and start decoding the data. In step (v), it is determined whether the data has ended or not. If the data has not ended, the process returns to step (d), and if the data has ended, the process advances to step (g) to end the program.

In other words, the decoders (38) to (3I) are the controller (
While the synchronization control signal from 1) is at low level, data is only taken in and no decoding is performed, and when the synchronization control signal becomes high level, decoding starts all at once.

G7 Flow Control Next, when an overflow of data in a serially connected decoder is detected, the flow control procedure for instructing the preceding decoder to stop outputting data will be explained with reference to FIGS. 14 and 15. .

First, in FIG. 14, the controller (1) has a transmit buffer TC, a receive buffer TR, a transmit buffer TA, and a receive buffer RA on the work RAM (12) for the 00M boat and the AUX boat, respectively. In the figure, only the transmission buffer TA and reception buffer RA on the AUX boat side are shown. Each decoder also has a transmit buffer TC, a receive buffer RC, a transmit buffer TA, and a receive buffer RA on the work RAM (12) for the 00M port and the AUX port, respectively. and,
Controller (transmit buffer TA of 11 AUX ports)
The data in the transmit buffer TC of the 00M boat of the decoder (3A) is transmitted to the receive buffer RC of the 00M boat of the decoder (3A), and the data of the transmit buffer TC of the 00M boat of the decoder (3A) is transmitted to the controller (A
It is transmitted to the reception buffer RA of the UX boat. In other words, it is considered to be bidirectional transmission. Also, the AU of the decoder (3A)
The data in the transmission buffer TA of the X boat is sent to the decoder (3B
) is transmitted to the reception buffer RC of the 00M boat of the decoder (3B), and the data of the transmission buffer TC of the 00M boat of the decoder (3B) is transmitted to the reception buffer R of the AUX boat of the decoder (3Δ).
It is transmitted to A. In other words, in this case as well, the transmission is bidirectional. Bidirectional transmission is also possible between other decoders.

In such a configuration, for example, a decoder (
The operations between 38) and 3C will be explained with reference to FIG. The program starts at step (A) and steps (
In b), whether or not the receive buffer RC of the 00M boat of the decoder (3B) is full, that is, the receive buffer RC
It is determined whether or not the buffer has overflowed, and if it becomes full, a transmission stop signal Xoff is outputted to the transmission buffer TC of the 00M boat of the decoder (3B) in step (c).

This transmission stop signal X off is sent to the previous stage decoder (3A)
The decoder (3A) stops transferring data to the decoder (3B). If it is not full in step (b), proceed to step (d).

In step (d), it is determined whether or not the reception buffer RA of the AUX port of the decoder (3B) is full. When it is full, the transmission stop signal X is sent to the transmission buffer TA of the AUX port of the decoder (3B) in step (e). Outputs off. This transmission stop signal Xoff is sent to the subsequent decoder (3
C) (7) It is received by the reception buffer RC of the 00M boat, and the decoder (3C) stops transferring the data to the decoder (3B). If it is not full in step (d), proceed to step (go).

In step (to), it is determined whether or not the transmission stop signal
Proceed to. In step (g), it is determined whether there is space in the reception buffer RC of the 00M boat of the decoder (3B),
If there is space, step (pull) 00M of the decoder (3B)
A transmission restart signal Xon is output to the transmission buffer TC of the boat. This transmission restart signal Xon is sent to the previous stage decoder (3^
) and the decoder (3A) resumes transferring data to the decoder (3B). If the transmission stop signal Xoff is not output in step (g) and there is no free space in the reception buffer RC in step (g), the process advances to step (su).

In step (wa), it is determined whether the transmission stop signal Xoff has been output to the transmission buffer TA of the AUX port of the decoder (3B), and if it has been output, step
Proceed to. In step (N), it is determined whether there is space in the reception buffer RA of the AUX port of the decoder (3B),
If there is space, step (ru) to AU of decoder (3B)
A transmission restart signal Xon is output to the transmission buffer TA of the X boat. This transmission restart signal Xon is sent to the subsequent decoder (3
It is received by the reception buffer RC of the 00M port of C), and the decoder (3C) resumes transferring data to the decoder (3B). Then, step (wo) ends the program. Further, if the transmission stop signal Xoff is not output in step (S), and if there is no space in the reception buffer RA in step (N), the program proceeds to step (W) and ends the program.

Similar operations are possible between the controller (1) and the decoder (3A) and between each decoder.

Effects of the Invention As described above (according to this invention, the coordinates of the original data are converted into predetermined enlarged coordinate information by a plurality of decoders arranged in series with respect to the information generating means, and then encoded, respectively). As a result, it is possible to easily obtain an enlarged image from a plurality of displays provided corresponding to a plurality of decoders.Furthermore, the plurality of decoders may have the same function; It can be placed anywhere.Furthermore, compared to conventional video multi-images, there are fewer constraints on image creation, new information can be created cheaply and quickly, and maintenance costs are low.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a block diagram showing an example of the controller used in Fig. 1, and Fig. 3 is a block diagram showing an example of the decoder used in Fig. 1. The configuration diagram shown in FIGS. 4 and 5 is a flowchart and diagram, and FIGS.
The figures are a flowchart and a diagram for explaining enlarged data conversion, FIGS. 8 and 9 are flowcharts and diagrams for explaining bezel correction, and FIGS. 10 and 11 are numbered 10, respectively. FIGS. 12 and 13 are flowcharts and diagrams for explaining external synchronization, and FIGS. 14 and 15 are flow charts for explaining flow control. 2 is a diagram and a flowchart. +11 is the controller, (2) is the keyboard, (3A)
-(3I) are decoders, and (4A)-(4I) are indicators.

Claims (1)

[Claims] Information generating means for generating information based on internal or external data; a plurality of decoders disposed in series with the information generating means; and the plurality of decoders. a plurality of display units respectively provided in correspondence with each other; the information generation means converts the coordinates of the original data into predetermined enlarged coordinate information corresponding to the plurality of decoders, and encodes the coordinates; A videotex display device, characterized in that the enlarged coordinate information is supplied to each of the plurality of decoders, and enlarged display is performed on a display device corresponding to the decoder.