CN112053663A - LCoS display board card and display device - Google Patents
LCoS display board card and display device Download PDFInfo
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- CN112053663A CN112053663A CN202010954606.4A CN202010954606A CN112053663A CN 112053663 A CN112053663 A CN 112053663A CN 202010954606 A CN202010954606 A CN 202010954606A CN 112053663 A CN112053663 A CN 112053663A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 32
- 230000003993 interaction Effects 0.000 claims description 7
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- 210000001503 joint Anatomy 0.000 abstract description 7
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- 238000011161 development Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
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- 239000011159 matrix material Substances 0.000 description 3
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
- G09G3/2096—Details of the interface to the display terminal specific for a flat panel
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Abstract
The invention provides an LCoS display board card and display equipment, wherein the LCoS display board card comprises a signal conversion module, an input interface and an output interface which are connected with the signal conversion module; the LCoS chip is connected with the input interface and the output interface, and the signal conversion module is configured to convert the first signal into a second signal; the second signal comprises an LCoS data signal for driving the LCoS chip. The LCoS display board card provided by the invention solves the problems of complex LCoS signal butt joint and system integration inconvenient for LCoS application in the prior art, can reduce the system integration difficulty of subsequent LCoS application, and provides convenience for popularization and application of LCoS.
Description
Technical Field
The invention relates to the technical field of liquid crystal on silicon (LCoS) display, in particular to an LCoS display board card and display equipment.
Background
Liquid Crystal on Silicon (LCoS) display is a reflective mode-based, very small-sized matrix Liquid Crystal display device, the matrix is fabricated on a Silicon chip by CMOS technology, the reflective micro Liquid Crystal projection technology belongs to the field of control circuits and driver chips, the LCoS chip is the core of the LCoS, and is a special chip made by integrating a display matrix and related driver circuits on the Silicon chip by using a design and manufacturing method compatible with large-scale integrated circuits. LCoS is a new flat panel display technology with a promising development prospect, and has a series of advantages such as a wafer-free mode, a wide product source, an open architecture, a low cost potential and the like compared with other display technologies, so that LCoS becomes one of mainstream technologies in the field of high-end information displays in the future. The LCoS can be widely applied to various optical application fields such as 5G communication, core optical network communication, projection, laser television, AR, vehicle-mounted HUD and the like.
However, the LCoS chip displays data input, typically as autonomously defined data digital signal LVDS or standard RGB [7..0], where neither autonomously defined LVDS nor factory LCoS interface definition is opened. For different types of external input signals, in order to drive an LCoS chip, design methods of various manufacturers are different, the input display interface chip is eight-door, the interface connection between the interface signals is not perfect, and for different types of external input signals, different display interface chips need to be selected, which brings great inconvenience to system integration, such as the system integration of interfaces such as MIPI, HDMI, VGA and the like used at present.
How to provide an LCoS display board card to solve the problem of high system integration difficulty caused by a variety of interface chips when an LCoS is interfaced with different types of external input information in the prior art, is becoming one of the technical problems to be solved by those skilled in the art.
It is noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to solve the problems that different driving devices are required to drive an LCoS chip and system integration is not utilized for external video digital signals with different formats in the prior art, and provides an LCoS display board card and display equipment.
In order to achieve the purpose, the invention is realized by the following technical scheme: an LCoS display board card comprises a signal conversion module, an input interface and an output interface, wherein the input interface and the output interface are connected with the signal conversion module;
the input interface is connected with a signal source and used for receiving a first signal, the output interface is connected with the LCoS chip and used for outputting a second signal, and the signal conversion module is configured to convert the first signal into the second signal; the second signal comprises an LCoS data signal for driving the LCoS chip.
Optionally, the signal conversion module includes a standard interface IC unit and an LCoS interface dedicated IC unit;
the input interface comprises an input end of the standard interface IC unit, and the output interface comprises an output end of the LCoS interface special IC unit;
the input end of the standard interface IC unit is connected with the signal source, the output end of the standard interface IC unit is connected with the input end of the LCoS interface special IC unit, and the standard interface IC unit is used for converting the first signal into a third signal;
the output end of the LCoS interface special IC unit is connected with the LCoS chip, and the LCoS interface special IC unit is used for converting the third signal into the second signal.
Optionally, the input terminal of the standard interface IC unit includes a DVI interface, an HDMI interface, and/or a VGA interface.
Optionally, the LCoS interface dedicated IC unit includes an LCoS interface dedicated chip provided by a vendor of the LCoS chip.
Optionally, information interaction between the LCoS interface dedicated IC unit and the standard interface IC unit conforms to a hardware interface and a software protocol provided by a manufacturer of the LCoS chip.
Optionally, the third signal comprises an LVDS signal or an 8-bit RGB display digital signal.
Optionally, the signal conversion unit includes a programmable logic device implanted with a dedicated IP core for converting at least one of the first signals into the second signal.
Optionally, the second signal conforms to a digital standard customized by a manufacturer of the LCoS chip.
Optionally, the first signal comprises S-Video, DVI, VGA, HDMI, VIDEO-IN and/or VIDEO-OUT.
Based on the same inventive concept, the invention further provides a display device, and the display device comprises the LCoS display board card.
Compared with the prior art, the LCoS display board card provided by the invention has the following beneficial effects:
the invention provides an LCoS display board card which comprises a signal conversion module, an input interface and an output interface, wherein the input interface and the output interface are connected with the signal conversion module; the second signal comprises an LCoS data signal for driving the LCoS chip. Therefore, according to the LCoS display board card provided by the invention, the input interface can be connected with signal sources of different types, the signal conversion module can convert the input signals of different types into second signals, and the second signals output by the output interface can drive the LCoS chip, so that external video signals of different types can drive the LCoS chip through the LCoS display board card provided by the invention, the problem of tedious butt joint of the LCoS signals is solved, the butt joint between digital signals is perfected, the system integration difficulty of subsequent LCoS application is greatly reduced, and convenience is provided for popularization and application of the LCoS.
Further, the LCoS display board card provided by the invention has the advantages that the signal conversion module comprises a standard interface IC unit and an LCoS interface dedicated IC unit, information interaction between the LCoS interface dedicated IC unit and the LCoS chip conforms to a hardware interface and a software protocol provided by a manufacturer of the LCoS chip, and the LCoS display board card has better expansibility.
Still further, the signal conversion module of the LCoS display board provided by the invention comprises a programmable logic device, the programmable logic device is implanted into a dedicated IP core, and the dedicated IP core is used for converting at least one first signal into a second signal.
The display equipment provided by the invention and the LCoS display board card belong to the same inventive concept, and at least have the same beneficial effects as the LCoS display board card, and are not repeated.
Drawings
Fig. 1 is a schematic structural diagram of an LCoS display panel card according to an embodiment of the present invention;
fig. 2 is a schematic circuit connection diagram of an LCoS display board card according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of an LCoS display board card according to a second embodiment of the present invention;
wherein the reference numerals are as follows:
100-signal source, 200-LCoS chip, 300-standard interface IC unit, 400-LCoS interface special IC unit, 500-programmable logic device;
s1-first signal, S2-second signal, S3-third signal.
Detailed Description
The core idea of the invention is to solve the problems that different input display standard interfaces are required to be selected for different types of input signals, the interfaces to the LCoS signal are uniform, and the system integration is complex in the prior art.
In order to realize the idea, the invention provides an LCoS display board card, which comprises a signal conversion module, and an input interface and an output interface which are connected with the signal conversion module; the input interface is connected with a signal source and used for receiving a first signal, the output interface is connected with the LCoS chip and used for outputting a second signal, and the signal conversion module is configured to convert the first signal into the second signal; the second signal comprises an LCoS data signal for driving the LCoS chip.
The LCoS display board card provided by the invention realizes that different types of external video signals can drive the LCoS chip through the LCoS display board card provided by the invention, thereby not only solving the problem of tedious butt joint of the LCoS signals, perfecting the butt joint among digital signals, but also greatly reducing the system integration difficulty of subsequent LCoS application and providing convenience for popularization and application of the LCoS.
In order to make the objects, advantages and features of the present invention more clear, a LCoS display board card and a display device according to the present invention are further described in detail below with reference to the accompanying drawings. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. It should be understood that the drawings are not necessarily to scale, showing the particular construction of the invention, and that illustrative features in the drawings, which are used to illustrate certain principles of the invention, may also be somewhat simplified. Specific design features of the invention disclosed herein, including, for example, specific dimensions, orientations, locations, and configurations, will be determined in part by the particular intended application and use environment. In the embodiments described below, the same reference numerals are used in common between different drawings to denote the same portions or portions having the same functions, and a repetitive description thereof will be omitted. In this specification, like reference numerals and letters are used to designate like items, and therefore, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.
< example one >
As shown in fig. 1, the LCoS display board provided in this embodiment includes a signal conversion module, and an input interface (not shown) and an output interface (not shown) connected to the signal conversion module; wherein the input interface is connected with a signal source 100 for receiving a first signal S1, the output interface is connected with an LCoS chip 200 for outputting a second signal S2, and the signal conversion module is configured to convert the first signal S1 into the second signal S2; the second signal S2 includes an LCoS data signal for driving the LCoS chip.
Preferably, in one exemplary embodiment, the signal conversion module includes a standard interface IC unit 300 and an LCoS interface-specific IC unit 400. The input interface comprises an input terminal (not shown in the figure) of the standard interface IC unit 300, and the output interface comprises an output terminal of the LCoS interface dedicated IC unit 400. An input end of the standard interface IC unit 300 is connected to the signal source 100, an output end of the standard interface IC unit 300 is connected to an input end of the LCoS interface dedicated IC unit 400, and the standard interface IC unit 300 is configured to convert the first signal S1 into a third signal S3; the output end of the LCoS interface dedicated IC unit 400 is connected to the LCoS chip 400, and the LCoS interface dedicated IC unit 300 is configured to convert the third signal S3 into the second signal S200.
Preferably, in one exemplary embodiment, the input terminal of the standard interface IC unit 300 includes a DVI interface, an HDMI interface, and/or a VGA interface. That is, the standard interface IC unit 300 may be a display IC which is currently popular, for example, the standard interface IC unit 300 may be an AD9883A chip provided for an Adno (ADI) semiconductor, and/or an LT6211C chip (dedicated decoding IC) provided for a dragon semiconductor. The AD9883A chip is a complete 8-bit, 140MSPS and single-chip analog interface, is optimized for capturing RGB (red, green and blue) graphic signals of a personal computer and a workstation, has the coding rate of 140MSPS and outputs 8-bit RGB signals; the LT6211C dedicated decoding IC converts standard HDMI1.4 to port LVDS signals. The standard interface IC unit 300 in the LCoS display board card provided by the invention can support two types of common digital and analog display standard interfaces. For example, the S-Video, DVI terminal and VGA digital signal output interface, and the common display interfaces on the display card include DVI interface, HDMI interface, VGA interface, S terminal and other television interfaces. The S terminal and other television interfaces are mainly used for TV-Out (also called VIDEO-OUT) and VIDEO-IN functions, and the VIDEO-IN and VIDEO-OUT are called VIVO together. It is to be understood that the foregoing is only illustrative of the preferred embodiments, and is not to be taken as limiting the invention.
Preferably, in one embodiment, the LCoS interface dedicated IC unit 400 includes an LCoS interface dedicated chip provided by a vendor of the LCoS chip. Aiming at the current situation that manufacturers of the LCoS chips do not disclose the access types of signals or interface protocols, which brings great difficulty to development and increases development risks and development time periods, the LCoS interface special IC unit 400 of the LCoS display board card provided by the invention adopts the LCoS interface special chip provided by the manufacturers, so that the development difficulty and the development risks are reduced, and the development period can be effectively shortened.
Preferably, the information interaction between the LCoS interface dedicated IC unit 400 and the standard interface IC unit 300 conforms to a hardware interface and a software protocol provided by a manufacturer of the LCoS chip 200. That is, according to the hardware interface and the software protocol of the LCoS dedicated IC unit 400 opened by the manufacturer of the LCoS chip 200, the standard interface IC unit 300 performs information interaction with the LCoS interface dedicated IC unit 400.
Preferably, IN one embodiment, the first signal S1 includes S-Video, DVI, VGA, HDMI, VIDEO-IN and/or VIDEO-OUT.
Preferably, in one embodiment, the third signal S3 includes an LVDS signal or an 8-bit RGB display digital signal to meet the design requirements of the LCoS interface specific IC unit 400.
Preferably, in one embodiment, the second signal S2 is a digital standard customized by a manufacturer of the LCoS chip.
Referring to fig. 2, it can be seen from the drawing that, in this embodiment, the first input signal S1 is an HDMI signal, the third signal S3 is an LVDS signal, the standard interface IC unit 300 uses an LT6211C chip provided by a dragon semiconductor to convert the HDMI signal into the LVDS signal, the LCoS interface IC unit 400 is an RDC200A dedicated controller IC provided by Raon-Tech, and the LCoS chip 200 is an RDF551F provided by Raon-Tech. Raon-Tech, among others, is a vendor that provides RDF 551F. As can be understood by those skilled in the art, in the specific implementation process, as shown in fig. 2, the LCoS display board further includes other peripheral circuits and components, for example, the microprocessor uses a C8051 single chip microcomputer, and details are not repeated.
As shown in fig. 2, when the LCoS display board card provided by the invention is applied, the LCoS display board card only needs to be designed according to a layout mode of chip process requirements, and the phenomenon that a design rule is violated due to IC change is avoided, so that the problem that the design rule is violated due to manual participation is avoided, and the problem of how to quickly design a layout of an LCoS chip driver is solved. Therefore, the LCoS display board card provided by the invention is a circuit design method of a standard and system.
Because the IC used in the scheme is designed according to the fixed layout mode of the chip process requirement, the phenomenon of violating the design rule caused by the change of the IC is avoided, the problem of violating the design rule by manual participation is avoided, and the problem of how to rapidly design the layout of the LCoS drive is solved.
< example two >
Referring to fig. 3, a schematic structural diagram of an LCoS display board card provided in this embodiment is different from the first embodiment in that the signal conversion unit in an LCoS display version library provided in the present invention includes a programmable logic device 500 embedded with a dedicated IP core, where the dedicated IP core is configured to convert at least one of the first signals S1 into the second signal S2. Compared with the first embodiment, the LCoS display board card provided by the present embodiment performs resource integration on the standard interface IC unit 300 and the LCoS interface dedicated IC unit 400 in the first embodiment by implanting a dedicated IP core into the programmable logic device 500, so as to normalize a hardware platform and simplify the design layout of a hardware layout. The programmable logic device 500 may be a Xilinx programmable application specific device, which is obviously only described in the preferred embodiment and not limited by the present invention.
The LCoS display board card provided in this embodiment can implant a dedicated IP core corresponding to a manufacturer of the LCoS chip into the programmable logic device 500 as needed, so as to quickly drive the LCoS chip and thus implement a liquid crystal on silicon display function.
In practical applications, a manufacturer of each of the LCoS chips 200 may provide the dedicated IP core corresponding to the LCoS chip 200 in a black box manner, for example, in a netlist file manner. The netlist file only provides input and output interfaces of corresponding functions without providing a specific implementation mode. When the netlist file (for example, in an EDIF or NGC file format) is used, port information (for example, an HDL file) required to be used by the netlist file needs to be registered first, and in a development process, a directory where the netlist file is located is specified to obtain a function related to the LCoS provided by the dedicated IP core, for example, the first signal S1 is converted into the second signal S2, so as to drive the LCoS chip 200 to implement information interaction with the LCoS chip 200.
In summary, the LCoS display board card provided by the present invention includes a signal conversion module, and an input interface and an output interface connected to the signal conversion module, where the input interface is connected to a signal source for receiving a first signal, the output interface is connected to an LCoS chip for outputting a second signal, and the signal conversion module is configured to convert the first signal into the second signal; the second signal comprises an LCoS data signal for driving the LCoS chip. Therefore, according to the LCoS display board card provided by the invention, the input interface can be connected with signal sources of different types, the signal conversion module can convert the input signals of different types into second signals, and the second signals output by the output interface can drive the LCoS chip, so that external video signals of different types can drive the LCoS chip through the LCoS display board card provided by the invention, the problem of tedious butt joint of the LCoS signals is solved, the butt joint between digital signals is perfected, the system integration difficulty of subsequent LCoS application is greatly reduced, and convenience is provided for popularization and application of the LCoS.
Further, the LCoS display board card provided by the invention has the advantages that the signal conversion module comprises a standard interface IC unit and an LCoS interface dedicated IC unit, information interaction between the LCoS interface dedicated IC unit and the LCoS chip conforms to a hardware interface and a software protocol provided by a manufacturer of the LCoS chip, and the LCoS display board card has better expansibility.
Still further, the signal conversion module of the LCoS display board provided by the invention comprises a programmable logic device, the programmable logic device is implanted into a dedicated IP core, and the dedicated IP core is used for converting at least one first signal into a second signal.
Other embodiments of the present invention further provide a display device, where the display device includes the LCoS display board card provided in any one of the above embodiments.
Because the display device and the LCoS display board card belong to the same inventive concept, the display device and the LCoS display board card have at least the same beneficial effects, and are not described in detail herein.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In summary, the foregoing embodiments have described in detail various configurations of an LCoS display board and a display device, and it should be understood that the above description is only for the description of the preferred embodiment of the present invention and does not limit the scope of the present invention in any way, the present invention includes but is not limited to the configurations listed in the above embodiments, and those skilled in the art can take three steps according to the above embodiments, and any changes and modifications made by those skilled in the art according to the above disclosure belong to the protection scope of the claims.
Claims (10)
1. An LCoS display board card is characterized by comprising a signal conversion module, an input interface and an output interface, wherein the input interface and the output interface are connected with the signal conversion module;
the input interface is connected with a signal source and used for receiving a first signal, the output interface is connected with the LCoS chip and used for outputting a second signal, and the signal conversion module is configured to convert the first signal into the second signal; the second signal comprises an LCoS data signal for driving the LCoS chip.
2. The LCoS display board card of claim 1, wherein the signal conversion module comprises a standard interface IC unit and an LCoS interface dedicated IC unit;
the input interface comprises an input end of the standard interface IC unit, and the output interface comprises an output end of the LCoS interface special IC unit;
the input end of the standard interface IC unit is connected with the signal source, the output end of the standard interface IC unit is connected with the input end of the LCoS interface special IC unit, and the standard interface IC unit is used for converting the first signal into a third signal;
the output end of the LCoS interface special IC unit is connected with the LCoS chip, and the LCoS interface special IC unit is used for converting the third signal into the second signal.
3. The LCoS display board card of claim 2, wherein the input of the standard interface IC unit comprises a DVI interface, an HDMI interface and/or a VGA interface.
4. The LCoS display board card of claim 2, wherein the LCoS interface-specific IC unit comprises an LCoS interface-specific chip provided by a manufacturer of the LCoS chip.
5. The LCoS display board card of claim 2, wherein the information interaction between the LCoS interface dedicated IC unit and the standard interface IC unit conforms to a hardware interface and a software protocol provided by a manufacturer of the LCoS chip.
6. The LCoS display board card of claim 2, wherein the third signal comprises an LVDS signal or an 8-bit RGB display digital signal.
7. The LCoS display board of claim 1, wherein the signal conversion unit comprises a programmable logic device embedded in a dedicated IP core for converting at least one of the first signals into the second signal.
8. The LCoS display board of claim 1, wherein the second signal conforms to a digital standard customized by a manufacturer of the LCoS chip.
9. The LCoS display board of any one of claims 1-8, wherein the first signal comprises S-Video, DVI, VGA, HDMI, Video-IN and/or Video-OUT.
10. A display device comprising the LCoS display panel of any one of claims 1-9.
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| CN108538266A (en) * | 2018-04-16 | 2018-09-14 | 吉林大学 | LVDS signals turn the conversion equipment of optional LCOS interface formats signal |
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