TW552575B - Method of driving a plurality of chained displays, driver, chainable displays, and chained display system - Google Patents

Abstract

To enable more displays to be connected in chain with the physical constraint from each device being removed, without changing any hardware on the system side, thereby to ease the expansion. There are provided a display driver 1 for outputting a display signal being displayed in a display area, and a chain display signal using a timing of at least one line which is appended to the display signal and is not used for displaying, a first display 2(1) connected to the display driver 1 for inputting the display signal and the chain display signal, and analyzing the chain display signal to enable the displaying in the local display area according to the display signal, and a second display 2(2) connected to the first display 2(1) for inputting the display signal and the chain display signal, and analyzing the chain display signal to enable the displaying in the local display area according to the display signal.

Description

552575 V. Description of the invention (1) [Field of the invention] The present invention relates to a display using an LCD panel or the like, and particularly to a method for driving a plurality of interlocking displays, a driver, a chainable display, and a chain display system. [Background technique]

Recently, a technique has been proposed in which a plurality of display panels are connected to a personal computer (PC), and a plurality of small display panels are used as a large screen display. Knowing interface specifications, only one display panel can be displayed by one video die. For example, in order to display different images on four display panels, four video die are required. For this reason, in order to display multiple display panels under the known interface conditions, at most, only four to eight display panels can be connected under the constraints of the space of the personal computer case, card slots, and the number of connections. Therefore, the expansion of the display panel is affected by limit. Further, when four video chips are used to display different images on the four display panels according to the conventional method, the personal computer CP can update the memory of only one of the video chips at a time. So during this period of time, the memory of the remaining three video chips only has the function of simply maintaining screen data.

As for the prior art, a plurality of display devices (monitor devices) are connected to a personal computer system, including Japanese Patent Laid-Open No. 9-3195 550. This prior art uses a plurality of display devices which are connected in parallel to a personal computer system capable of executing plural programs in parallel. Each display device selects whether a display signal can be operated by a storage instruction key provided therein or sent by a personal computer system. Store command signal capture and enable display of signals based on this selection. This technology allows displaying images to be executed by each display device without

O: \ 64 \ 64481.ptd Page 5 552575 V. Description of the invention (2) Limit the number of programs currently executable by hardware configuration. The same goes for the prior art of connecting a plurality of display devices to a personal computer, and Japanese Patent Publication No. 9-2 7 4 4 7 5. The present disclosure discloses a technique of inserting ID information for each frame just before the display data in the first line, and fetching the display data as if it matches the ID present in each display device. According to this technology, the plural display devices can be driven by the output of one of the personal computer systems and the wiring can be simplified. In terms of it, the recent digital interface mainly introduced notebook computers. At present, personal computers and monitors are simply connected in a one-to-one relationship. As for the use of a digital interface to connect multiple displays in the form of a wreath, it is proposed in the application manual of the Sony Corp.'s billion-bit video interface (G V I F). It is expected that this mode of using a digital interface to connect in a wreath will gradually expand. [Problems to be Solved by the Present Invention] However, in the technique described in the aforementioned Japanese Laid-Open Publication No. 9-3 1 9 5 50, since the display devices are connected in parallel, the interface must be provided between the personal computer system and the display device, so that The drawing line becomes complicated. In addition, a storage signal detection circuit must be provided for each display device, so the hardware configuration becomes complicated. In addition, in the technique described in the aforementioned Japanese Patent Publication No. 9-2 74 47 5, an ID setting circuit must be provided for each display device, and ID must be set each time the number of displays is changed, so that the operation of the display device becomes complicated. Further, this public case only reveals checking ID information, and the personal computer system cannot control the individual display devices differently. In addition, in order to complete the aforementioned G V I F technology, new hardware is required to be constructed and video communications provided by a new display control circuit. In addition, if there is instruction information about which display device will be written, how to write screen information, and how to control the display device

Page 6 552575 V. Description of the invention (3) When the information is sent to the chain display device, such information must be sent separately from the display signal according to the technology disclosed here. In this case, it is necessary not only to change the software, but also to change the hardware or increase the number of interface connections. The purpose of the present invention is to solve the aforementioned technical problems, the purpose of which is to allow more displays to be connected and the physical limitations from each display are removed and thus easily expanded. Another purpose is to enable the command information to be sent to the chain display device without changing any hardware on the system side. In particular, the command information can be sent by rewriting the register of the video chip, so it can be sent automatically without the need to send it separately from the screen information. . Yet another object is to enable the use of many chained display devices to enable expanded forms by simple software changes, and particularly to enable separate display expansion of screen information on many chained display devices based on command information. [Summary of the Invention] In order to solve the foregoing problem, the present invention is a method for driving a plurality of interlocking displays, which is characterized by attaching a display timing that can be visually displayed in the display area of the display to a display timing that is not displayed in the display area, and controlling a display The control instructions are written into the attached display timing. The control instructions include information for selecting any display by a plurality of displays, and control information for the selected display. Display timings that are not displayed in the display area of the display can be on the top, bottom, left, or right, based on the use of blank squares at the end of each line on the right side of the display area, or based on the method of using predetermined lines after the end of the frame below the display area There is no need to change the display reference of the display, because the display reference usually exists at the left end. special

552575 V. Description of the invention (4) Don't reduce each if you can use it. In addition, if the block part and the area news can be written, including the chain, the number can be automatically increased to display all the information, and it is not necessary to use it as a backdrop. Each method has its own display instruction. Each time the display instruction is written on the initial display block, the step of the screen is displayed. If the device displays the screen step with plural and sub-information, the characteristic area can be displayed when the complex is attached. At the end of the line, the command area includes the change point, which refers to the information or control software to automatically transfer this drive to cut and divide by the screen display. It is more like a new device, and it is easier to connect. For example, the interlocking chain will use a block to show how the assets can be augmented to open up a better knot. The invention does not show a timing display device, which forms a timing of at least one line after the control line is received. · Control instructions and features include an instruction line consisting of a header section. The header information required by the header block part is preferably in the instruction information such as which display device to write and how to control the display device. . In addition, the header information package version information and the method of each time through the chain display are characterized by the same screen information sent to Fuda to form a large screen, and the selection information includes the borrowed display to expand the selection screen information to form a large screen. When the display is enlarged and the resolution needs to be increased, the new operation is also performed. In particular, if a liquid crystal display is formed by borrowing a plurality of displays to form a large screen for driving a plurality of interlocking displays, the display timing on the display area is displayed on the display timing, and the control of the display device is controlled, and the control instructions include ID information, ID information on It is preferable to update the device time. For example, even if the power switch time of each display loses its ID information, each system command automatically obtains its ID. Special ID

Page 8 552575 V. Description of the invention (5) The message is configured to complete the function through the complex interlocking simplified software each time. Further, such a display device has an ID and a display instruction according to the ID) to automatically perform a display operation, and optionally, to perform a display operation without regard to other aspects, the present invention is a drive, which includes a display of a display signal generating area Signals; interlocking display signalling signals, which are not used for displaying display signals; and output devices, display signals attached to interlocking display signals generated by the device, and outputting interlockers. In particular, if the display signal generated by the chain display signal is used, the unused chain display signal is preferably used for timing control, without the need to generate a display if the chain display signal generating device is used for control by a plurality of chain display signals. The selected display enters or increases the number of interface lines from any device that interlocks the display. Further, it is enough to automatically increase the number when the chain display is borrowed, so that it can be configured to identify the instruction information based on such ID information (contained in this control, each chain display is preferably set to perform the ID setting separately by the selected display. Driving a plurality of chain display units for generating display on the display; a display number generating device for generating a chain based on the display sequence of the generated display area; and generating a chain for attaching the display signal from the chain display signal to the display signal from the display signal generating device for the chain The interlocking display signal generated by any of the monitors is based on at least one row of the time-locked display in the display display area. Any change can be made by adding a simple display reference. Further interlocking display signals include selection of any display and control of the display. , Only by changing the software can be specified to display, without the need to chain any hardware signal generation device to generate chain display

552575 V. Description of the invention (6) The signal is displayed, so the display information includes multiple control information indicating that each display is large enough. In addition, the outer panel can be used to generate a lock display by including a selection to divide the screen after division. The invented personal electronic selection information is further improved by the display signal of the plural display. The present invention outputs a display to control the chain display to be received by the display driver and not displayed by the digital receiver. Display signal; and a control instruction display terminal of a digital display signal, instead of a display device (which is a display driver). The driver that drives the brain is the display signal, and the output sequence is sent to the serial register. The shadower can be connected to a σσ state. Can choose the same if the connector, the video link can be linked to the package signal control instructions; to lose-* mouth to steal to maintain a single all multiple chained display, the display signal is chained to the lock display signal It is characterized by displaying signals, and expanding the display of better multiple interlocking display cards. For example, the front chain is connected to a display display, including: a digit, and in an auxiliary order; a frame is displayed. The control memory display signal is provided by the display information control electronics and control receiver in the display circuit to store and attach the frame memory to the system. In the multi-drive command, the signal is used to store the display in the display. The command determines the output signal of the display signal and the control circuit determines whether to display the punch. Here the digital feature is whether the control number shows the control command to the secondary display signal. The transmitter does not send power to the bureau. The control circuit uses the analyzed display of the control unit and the display of the digital transmitter to control it. The advantage is that it can be used simply as a retardation instruction without frequent coincidence.

Page 10 552575 V. Description of the invention (7) The control instructions input by the digital receiver may be different in content, such as adding ID information. The same applies to display signals, which do not need to be overlapped frequently. However, if the display signals are directly output to other displays, there is no need to change the display signals.

Further, the chain display system of the present invention is characterized by comprising: a display driver for outputting a display signal to be displayed in a display area, and a chain display signal using a timing sequence of at least one line attached to the display signal and not used for display; A first display is connected to the display driver to output a display signal and a chain display signal, and analyzes the chain display signal to enable display in a local display area according to the display signal; and a second display is connected to the first display to input a display signal And the chain display signal, and the chain display signal is analyzed to enable the display in the local display area according to the display signal. The display of each monitor does not need to frequently display all the display signals, but can do partial display. Especially for an enlarged display using a plural display of more than three, a split display can be enlarged. In addition, the interlocking display signal input to the first display and the interlocking display signal input to the second display need not always coincide with each other, even if they contain different information such as incremental ID information. [Preferred Specific Embodiment] Specific Embodiment 1 Details of the present invention will now be described with reference to specific embodiments shown in the drawings.

FIG. 1 is a block diagram showing a specific embodiment of a chain display system to which the present invention can be applied. Symbol 1 in FIG. 1 is a personal computer (PC), which is used as a driver for driving the display of the present embodiment. In the personal computer 1, symbol 12 is an input / output circuit including a keyboard, a mouse, etc., 13 is a RAM including a hard disk, 1C, etc. 552575 5. The invention description (8) can store information such as display signals, and 14 is ROM can store control programs. The display signal for display in this embodiment may be formed by the personal computer 1 itself, or an externally generated display signal may be used. Further, 11 is a CPU which performs execution processing of the personal computer 1 according to a control program from the ROM 14 or an instruction from the input / output circuit 12. Symbols 15 and 5 are display control circuits. The display control circuit 15 is a circuit controlled by the CPU 1 1 and performs display control, such as how to write a display signal (screen information) to a connected display panel, or how to control a display panel such as brightness control, and the display control circuit generates a The command line includes a control command, and attaches the command line to a display signal (screen signal), and outputs to a display panel (more details later). Further, symbols 2 (1)-2 (η) in FIG. 1 are display panels. In this embodiment, a liquid crystal panel (LCD) is used, and a plurality of display panels 2 (1)-2 (η) are connected in a wreath shape. In the display panel 2 (1)-2 (η), the symbol 21 is a digital receiver for receiving a display signal (screen information) and a chain display signal (control instruction), and 22 is a digital transmitter for outputting screen information. And control commands to the linked display panel. The digital receiver 2 1 of the first display panel 2 (1) receives the output from the display control circuit 15 of the personal computer 1, and the digital receiver 2 1 of the second display panel 2 (2) receives the first display panel 2 (1 ) Output from digital transmitter 22. Similarly, the digital receiver 2 1 of the η-th display panel 2 (η) receives the output of the digital transmitter 22 of the η-1 -th display panel 2 (η-1) (not shown), etc. The receiver and transmitter allow the system to become a wreath chain. Further, the symbol 2 3 is a control circuit for controlling each display panel 2 (1)-2 (η) according to a control instruction received by the digital receiver 21, and 2 4 is for a frame memory.

〇; \ 64 \ 64481.ptd Page 12 552575 V. Description of the invention (9) To store the screen information received by the digital receiver 21, 25 is a liquid crystal display control circuit for storing one of the 4 stored in the frame memory 2 4 The day-to-day information is sequentially retrieved to control the liquid crystal display circuit 26 (described later in detail). The liquid crystal display circuit 26 is used to display the time image on the LCD screen under the control of the liquid crystal display control circuit 25.

Fig. 2 is an explanatory diagram showing the relationship between display screen information and control instructions. Such instructions are generated by the display control circuit 15 of the personal computer 1 and sent to the display panel 2 (1)-2 (η). In this specific embodiment, when an instruction is sent, the instruction line 32 or the control instruction is attached to the last line actually displayed on the display area 31 of one of the display panels 2 (1)-2 (n). In this specific embodiment, as shown in FIG. 2 ·, XGA (Extended Graphic Array) is used to display a resolution of 1 0 2 4 X 7 6 8, and the display area 3 1 is from the 10 2 4 points and gates of the data line direction. Line 7 6 8 is formed in the line direction, and the command line 3 2 is formed in line 7 6 9 of line 7 6 8. In the instruction line 32, the control instruction is written into the display panels 2 (1)-2 (η) that specify the screen information to be written, and shows how to control the aforementioned selected display panel. The display panel 2 (1)-2 (η) has received the control instruction formed by the instruction line 3 2 of the screen information in the display area 31, and the display panel analyzes the control instruction to determine whether to perform the display on the panel and how to display it. FIG. 3 shows the number of command lines in this embodiment. The instruction line in this embodiment is roughly composed of two parts, that is, a header block 41 and an instruction block 42. The header block 41 is a sum of instructions (checksums) corresponding to so-called header information such as version information, and used to check noise, etc., and automatically increments ID, and has a fixed length in this embodiment. In terms of it, the instruction block 42 contains a set of two points, which represents an instruction with two points. The first point 552575 5. The invention description (ίο) includes the ID number of the instruction to be executed, the number of instructions, whether the instruction is unique, and whether the ID instruction is valid (enabled state); the second point stores the corresponding first instruction The data value of the point command. Assume that the starting point of the instruction line is point 0, and then in the instruction block 42, the instruction corresponding to the first point is even, and the instruction value corresponding to the second point is placed at the odd point. Further, the current stream is a 6-bit digital interface. If an 8-bit digital interface is considered, it is better not to use two LSBs (least significant bits). The two least significant bits are reserved in this embodiment. In addition, since there are three kinds of data of each point of the display: red (R), green (G), and blue (B), the command information of each point is represented by up to 6 X 3 = 18 bits at one point. In this specific embodiment, the 0th to 15th points are used as the header block 4 1, and the 16th point and the remaining points are used as the instruction block 4 2. The unused part is reserved in the second block. In addition, in this specific embodiment, the interface using this command line allows different display screens to be displayed on the multiple display panel. The format based on this concept is called MD A (Multiple Display Architecture). The header block 41 of this embodiment includes the following items. (1) Name (MDA ID, MDA is valid) (1 point) (2) Version information (1 point) (3) Horizontal resolution (1 point) (4) Vertical resolution (1 point) (5) Auto increment ID (1 point) (6) MDA instruction line enable (1 point) (7) Total number of MDA instruction lines (1 point) (8) MDA line checksum (1 point) (9) Test mode enable (1 point)

Page 14 552575 V. Description of the invention (11) (1 0) Reserved (7 o'clock), AMDA 4 block 41's younger brother-the point 'indicates that this format is hidden, and it has ID. With this kind of automatic increment of ID, even if it loses its own D, for example, at the initialization time such as the power switch time, the D itself can still be identified by receiving the MDA format. ^ Make the behavior valid or invalid. Secondly, (2) the version information is used when the MDA format is changed, and (3) the horizontal resolution and (4) the vertical resolution are in this tool. The implementation example is 10 2 4x 7 68. Further (5) Automatically increments 10 to a value, which is automatically increased each time the end of the personal computer 1 passes the chain display panel 2 (丨) _ 2 (n). Each display panel does not need to set its own ID, but automatically

Further (6) The MDA command line can be protected during the update period of the MDA command line, etc. When the data of the interlocking digital signal is changed from parallel to series, it can avoid data transmission errors due to track delay. This is information with automatic time limit. . Secondly, (7) The total number of MDA instruction lines is used to increment the MDA instruction line. As in this specific embodiment, the MDA instruction line is not limited to one line. Instead, it can be incremented as necessary to send chain instruction information. (8) The check of the M D A line and the use to check whether the information is correct or changed by the noise mixing instruction line are particularly effective in this specific embodiment, because the chain link easily causes noise to mix in and change the data. As for the second (9) test mode is enabled, the test items can be loaded by inserting this bit, for example, it can be used to check the link. Next (10) is the reserved part.

Figure 4 shows an example of the first 0 and 1 points of data inserted into the header block 41. In the header block containing the foregoing items, the values shown in FIG. 4 are loaded. Point 0 on the left of Figure 4. As above (1), the names of M (2Dh), D (24h) and A (21h) are loaded using the upper two bits (the two most significant bits of the MSB). Quartile

Page 15 552575 V. Description of the invention (12) R data, G data and B data. Further at the right point of Figure 4, the version information using R, G, and B data is loaded as the version information and news (2) above. The instruction block 42 in this embodiment will be described in detail later. The instruction block 4 2 behind the header block 41 includes, for example, the following items. (1) Brightness control (2) Contrast control (3) Gamma control (4) White balance (5) Power saving mode-backlight off and LCD logic off (6); East junction and regeneration (7) Display disabled Yes' Blue background (8) Magnification ratio (H / V) (9)-(1 2) Write the start (end) position (13)-(16) of the image H (V) in the frame memory to UXGA (SXGA , XGA) display start (end) position H (V) °

(1 7) Edge color (1 8) The first item of the four SVGA to UXGA instruction block 42 (1) Brightness control and (2) Contrast control are adjusted to control the display panel performing the display operation 2 (1)-2 ( η) brightness and contrast, and (3) the gamma control system adjusts the calibration curve according to the input / output to generate the LCD reference voltage. Further (4) the white balance is the white point adjustment value that determines the color gradation, and (5) the power saving mode is related to the power saving mode settings such as backlight off and LCD logic off. Further (6) Freeze and regenerate shows that the MD A command time is not received (if given), (7) shows disabling / enabling (blue background) as options

Page 552 575

The instruction is therefore locally, when receiving an inappropriate signal, the output is appropriately black or blue and (8) the magnification ratio is displayed in the horizontal / vertical magnification ratio. Further (9)-(1 2) the start (end) position of the image written in the frame memory ^ temporarily 'store cry to set the level of data output by the display and (1 3) ~ (丨 6) display on + start $ (End) The position is a register to set the level of data taken on the LCD: ^ One step (1 7) The edge color is a register to set the resolution (640x480) displayed when, for example, VGA & see graphics array) XGA (1024x768) whether to display colors for the rest of the " (18) Four SVGA to UXGA are used as registers to display SVGA (Super VGA) (800x600) and UXGA (1600xl200) to display the rotation data. V. Description of the invention (13) Fig. 3 shows an example of instruction insertion in instruction block 42. In this specific embodiment, as shown in FIG. 5, two points constitute an instruction; the first point (2 points) table is an instruction, and the next point (2 η + 1 point) includes a parameter. In the example in Figure 5, the y-th point of% $ b of the R data indicates whether the command is enabled (valid or invalid), and whether the first bit of the command is common to each display panel 2 (1) -2 (n) or Special for display panels. This bit command (common or unique) is a command that can effectively output a phase without image on each panel of the complex display panel 2 (1)-2 (n). Then, the ID instruction is formed from the bottom, bit, and G data, and the ID bits from 7 to 1 D0 can be selected up to 8 bits-2 5 6. Display a panel. Secondly, the six-bit display obtained from MSB in the B data, the 疋 = state lean part, and the internal register bit of the display circuit 2 3 of the display panel 2 (丨) -2 (η) shown in Figure i site. 2 ^ + 1 point, which is the next point shown in Figure 5, stores the value corresponding to the ~ point command. ί In other words, the information about the address of the register in the specified neighborhood of the display panel with the second point of the specified ID, and the use of all the data above R and G σ

552575 V. Description of the invention (14) bits, which are actually displayed on the display panel 2 (1)-2 (η) based on 2 η + 1 point data. For example, the instruction shows that the display start (end) position of the aforementioned (1 3) L C D uses the data of 2η and 2η + 1 points stored in the internal register for the start position of the LCD display position. By using the MD A format using the header block 41 and the command block 4 2 in the aforementioned command line 3 2 (for example), the display screen information flow of the display 3 will be explained mainly with reference to the block diagram of FIG. 1. First, the display control circuit 1 5 of the personal computer 1 is executed by the CPU 11

Program control generates command line 3 2 after screen information. In the generated instruction line, 1 is set in (5) of the header block 41 to automatically increment the ID. Further 3 is set to the second point command of the command block 4 2 and 6 (;; East end and reproduction) is set to A5-A0. For example, the data content of 2n + 1 point is set to 1 (1 reproduction or rewriting). In the display panel 2 (1) that receives the instruction line 3 2 together with the screen information from the digital receiver 21, the control circuit 23 automatically increments the ID content based on the input header block 41 (5) to identify the local 1 Is 1. The ID of 42 is 3, and this is not its instruction. Two two = two ^ ^ ^ ^. And only use the frame § 自 忆 体 2 4 未 才 木

Min ° & for theft. Steps 1 ~ 2 are used for the next chain display panel mi f41. The auto-increment 1d is incremented to 2 and the command line 32 is sent out by the digital transmitter 22 together with the screen poor signal. For the same reason, Yu has already received the digital crying 9 Ί Shen 1 Μ Skull-A 4. fine. Received 21 received the instruction line 32 together with the display panel 2 (2) of the firefly * Λ, and used to control the content of id in (5) of Dianmei block 41 to identify the non-ordering area of i. The buffer of the advance memory 24 does not use data or the like. The first step is to use a building ° £ ^ Further, for the next chain:

O: \ 64 \ 6448l.ptd 18th stomach 552575 V. Description of the invention (15) Display panel 2 (3) (figure_not shown), the header block 4 1 (5) automatically increments ID to 3, instruction Line 3 2 is sent by the digital transmitter 2 2 together with the screen information. Then, the receiver has received the instruction line 3 2 and the display panel 2 (3) of the screen information, and the control circuit 23 automatically increments the ID content based on the input header block 41 (5) to identify the local ID as 3. Further, the ID of the instruction block 42 is 3, so it is identified as the instruction of the block, and the reproduction is based on the instruction content, that is, the capture of data, etc., and the liquid crystal display circuit 2 is under the control of the liquid crystal display control circuit 25. 6 Take control. It also serves as a buffer. It is further used in the next chain display panel 2 (4) (not shown in the figure). The (5) in the header block 41 is automatically incremented to 4. The instruction line 32 is sent by the digital transmitter 22 together with the screen information. On the display panel 2 (4), the local ID identified by the content of the input header block 4 1 is 4, the ID is incremented to 5 and sent to the next panel. Further, since the ID of the instruction block 42 is 3, it is recognized that it is not its instruction, but only serves as a buffer without fetching data and so on. As described above, the M D Α format control is performed on the interlocking display panels 2 (1)-2 (η) via the ID flow. FIG. 6 shows an enlarged display application using the MD A format in this embodiment. Symbol 51 in FIG. 6 is a video card, which contains a driver program in the so-called MDA format, in which the video driver software is changed and attached to the end of the original display screen, the display timing of a row not used for display, and the one inserted into a personal computer as a display panel driver. 5 2 is a display panel that displays screen information from a single panel. 53 is the first display panel group, which enables the enlarged display of the four display panels. The display panel 53 (1) constituting the first display panel group 53 is connected to the display panel 52. Further 54 is the second display panel group, and enables the use of 9 displays

Page 19 552575 V. Description of the invention (16) The display panel is enlarged to form a display panel 5 4 (1) which is one of the second display panel group 5 4 and is connected to a display panel 5 3 (which is one of the first display panel 5 3). 4) .. Further in this specific embodiment, the plurality of display panels constituting the first display panel group 53 and the second display panel group 54 are respectively provided with the same XGA (1 0 24x768) resolution as the display panel 52. In addition, the display panel 52, the first display panel group 53 and the second display panel group 54 are individually connected to form a display panel. The plurality of display panels are also in a wreath state in this embodiment. As shown in Fig. 6, the same screen information is sent to all the display panels on the bus of the chain link. In the display panel 52, the input screen information is directly output, but in each display panel forming the first display panel group 53, the screen information is divided into four groups and maintained in each frame of memory, and the screen information maintained by the enlarged display is displayed. And constitute a big day. The same is true for each display panel forming the second display panel group 54. The screen information is divided into 9 and maintained in each frame of memory. The daytime surface is composed of the screen information maintained by the enlarged display. Because the operation of each frame of memory is controlled according to the command information described in the aforementioned MDA format, a simple display can be used to enlarge the display without the need to change hardware or increase the number of interface lines. Specific embodiment 2 In specific embodiment 1, as shown in FIG. 2, the display area 31 of the resolution (1 0 2 4 x 7 6 8) is displayed in XG A, and the instruction line 32 is formed in the next line of the 7 6 8 line 7 6 9 lines. In this specific embodiment, the instruction uses blank insertion for each line. For structural elements similar to the specific embodiment 1, designate similar to the specific embodiment 1 and delete its detailed description.

Page 20 552575 V. Description of the invention (17) In this specific embodiment, as shown in FIG. 7, the instruction area 61 is provided outside the display time in the scan line direction of the formed display area 31, and the display surface is linked. Control instructions are inserted into this instruction area. As shown in FIG. 8 in particular, the blank 6 4, that is, a blank area with 3 2 0 points, exists in η line of screen information 6 2 and η + 1 line of screen information 63 formed at 10 2 4 points, and is controlled by the control command. 6 5write blank 6 4, the control instruction information can be attached to the screen information as the instruction line of the specific embodiment 1. The content of the control instruction 65 is formed by using a plurality of spaces between lines to configure a header block 41 and an instruction block 42 similar to the specific embodiment 1. As in the specific embodiment 1, the MDA format can be enlarged to realize chain connection. As mentioned above, according to the specific embodiments (1 and 2), when connecting a plurality of displays (display panels) to a personal computer system, there is no need to construct new hardware, and it can be performed on any display panel by sending instruction information to a chain display panel. Show operation. Further, by simply changing the software, it is easy to perform enlarged display using multiple chain display panels. In addition, since the display information maintenance function is set for each display panel, it is not necessary to send screen information to the same image. In this way, the data value on the chain bus has no change point, and because there is no change point, except for the time of updating the screen information, EMI (electromagnetic interference) can also be avoided. Further in the specific embodiments (1 and 2), the LCD is used as a display. When a large day surface is generated by a chain link, the advantage of the LCD is that the screens are easy to connect, but the present invention is not limited to this type of LCD, but can also be applied to other electronic displays including emission-type displays such as CRTs. Further in this specific embodiment, the M D A format is used for illustration, and the header block and instruction block are clearly separated for illustration, but it must be understood in the present invention.

Page 21 552575 V. Description of the invention (18) The blocks do not need to be clearly separated frequently in this way, and if there is such content, they can be freely selected. .

[Advantages of the Invention] As described above, according to the present invention, a plurality of displays can be linked in a chain, and the physical limitation is removed by each display device, and it is easy to achieve enlargement. Brief description of the drawings: FIG. 1 is a block diagram showing a chain display system of a specific embodiment; FIG. 2 is an explanatory diagram showing the relationship between screen information and control instructions in specific embodiment 1; FIG. 3 is an explanatory diagram showing a specific embodiment 1 command line format; Figure 4 is an illustration of an example of inserting data in a header block of an explanatory diagram; FIG. 5 is an example of an illustration of inserting an instruction in a block of an instruction display; FIG. 6 is an illustration showing an example of using the MDA format in the specific embodiment Enlarged display application; FIG. 7 is an explanatory diagram showing the relationship between screen information and control instructions of the specific embodiment 2; and FIG. 8 is an explanatory diagram showing a sequence of instruction insertion of the specific embodiment 2. [Notation] 1 · · · Personal Computer (PC) 2 (1) -2 (n) .. · Display Panel 1 1 ... Central Processing Unit 12.... Input / Output Circuit

13... RAM 1 4… ROM

Page 552575

Page 23 V. Description of the invention (19) 15. • • Display control circuit 2 1 ·. • Digital receiver 22.… Digital sender 23.… Control circuit 24. • • Frame memory 25.… LCD display control Circuit 26.… LCD display circuit 31… Display 32… Command line 41… Header block 42… Command block 5 1… Video card 52. • • Display panel 53.. • First display panel Group 54.… Second display panel group 6 1.… Command area 62. .. η line of screen information 63. .. η + 1 line of screen information 64. Blank 65.… control instructions

Claims (1)

552575 Case No. 89110323 Patent Application Range Amendment mW: α 1. Step: A method for driving a plurality of interlocking displays, the method includes the following steps: the display is displayed on the display, and a control control indicator is sent. 2. End of the area 3. Method ， 部 部 段 4. Among them the screen shape screen 5. Step: Display the instruction to claim the part which is not done, such as the part and its package, if the screen is included, and please show the shape, please control it. Includes a special screen to display the big screen, the control display to drive the display, a variety of display timings that can be visually displayed on one of the display areas of the display, a display timing of an unattached area, and control instructions for the display. The auxiliary display timing is written, and the selection information is used by a plurality of interlocking displays to select any display control information of the selected display. The first range of the method of driving a plurality of interlocking displays is that the display timing in the display area of the display is a timing formed by displaying in at least one line. The 1st or 2nd square command that drives the multiple interlocking displays includes a command line, which is composed of a header area command block part, and the header block part is a lock display required label. Header information. The first method of driving multiple chain displays is to send the information to the multiple display to enlarge the display to form large information, including the selection of all the multiple displays to use the enlarged display selection information, and the information to divide the enlarged display screen information into A method for forming a large plurality of interlocking displays, the method including a visual timing of a display area of one of the following steps, and a display timing of an unattached area; and 〇- \ 64 \ 64481-920409.ptc Page 25 552575 _Case No. 89110323_ ^ 年 承 月 dead_iMz_ VI. Patent application scope Write a control instruction to control the display into the attached display sequence, the control instruction includes ID Information is updated each time it passes through a plurality of interlocking displays. 6. The method of driving a plurality of interlocking displays according to item 5 of the scope of patent application, wherein the display recognizes its ID based on the ID information, and performs the display operation based on the ID instruction information contained in the control instruction. 7. —A driver for driving a plurality of interlocking displays, including: a display signal generator for generating a display signal to be displayed in a display area of the display; a chain display signal generator for using a non-display based on the generated display signal; It is used for displaying the display sequence of the display area, and generates a chain display signal No. 4; and an output device for attaching the chain display signal generated by the chain display signal generator to the display signal generated by the display signal generator, and outputting Chain display signals to any chain display. '8. The driver for driving a plurality of interlocking displays as claimed in item 7 of the scope of the patent application, wherein the interlocking display signals generated by the interlocking display signal generator are based on the generated display signals, and the interlocking display signals are generated using at least one line of timing, the line is not Used to display the display area. 9. The driver for driving a plurality of interlocking displays as described in item 7 of the scope of the patent application, wherein the interlocking display signal generated by the interlocking display signal generator includes selection information for selecting any display from the plurality of interlocking displays, and the control information for controlling Selected monitor. 1 0. If the number 7 of the scope of patent application drives the driving of a plurality of interlocking displays 〇- \ 64 \ 64481-920409.ptc Page 26 552575 Amendment No. 89110323 6. Patent application scope device, in which the chain display signal generated by the chain display signal generator includes selection information for selecting all multiple chain displays, And the display signals generated by the display signal generator are sent out to all the multiple linked displays in a chain. 1 1. The driver for driving a plurality of interlocking displays, such as the item 10 in the scope of patent application, wherein the interlocking display signals include control information for dividing the display signals of the plurality of displays and enlarging and displaying the divided display signals on each display. 1 2. A display, which can be linked to a display driver, the driver outputs a display signal to be displayed on the linked display, and a control instruction for controlling the linked display, the display includes: a digital receiver for inputting The display signal output by the display driver and the control instruction formed in a display sequence, which is attached to the display signal and is not displayed;! A control circuit is used to analyze the control instructions input by the digital receiver; and a frame memory is used to store the display signal; and a digital transmitter is used to output the display signal and the control instruction attached to the display signal to a connected display. 1 3. According to the display of item 12 in the scope of patent application, wherein the control instruction includes ID information, the ID information is updated every time the chain display is passed, and the control circuit updates the control instruction included in the control instruction input by the digital receiver. ID information, and the digital transmitter outputs the ID information updated by the control circuit to the next connected display. O: \ 64 \ 64481-920409.ptc Page 27 Amend 552575 Case No. 89110323 6. Application for patent scope 1 4. For the display of patent application No. 13 item, the control circuit identifies the local ID based on the updated ID information , And compare the identified local ID with the ID requirement information contained in the control instruction. 1 5 · If the display of item 12 in the scope of patent application, the control circuit determines whether the display signal is to be displayed on the local display by analyzing the control instruction, and the digital transmitter outputs the display signal and control instruction to the connected secondary display, and The control circuit decides whether to display the display signal or not. 16. A chain display system including: a display driver for outputting a display signal to be displayed in the display area, and a chain display signal using at least one line of timing, the line is attached to the display signal and is not used for display; A first display connected to a display driver for inputting display signals and interlocking display signals, and analyzing the interlocking display signals to enable display in a partial display area according to the display signals; and a second display connected to the first display, for A display signal is output to display in a display area, and a chain display signal adopts at least one line timing, the line is attached to the display signal and is not used for display, and the chain display signal is analyzed to enable the display of the local display area according to the display signal. . O: \ 64 \ 64481-920409.ptc Page 28