KR100951875B1 - Image signal processing system in the form of multiple matrix - Google Patents

Abstract

PURPOSE: A multiple matrix form image signal processing system is provided to perform the transmission and conversion of various forms of image signals by changing digital interface standards of the image signal and to enable multiple inputs and outputs of the image signals. CONSTITUTION: An output control unit(20) changes an image signal into a digital image signal with a digital transmission type. A central control unit(80) confirms an input port and a digital image signal of a first electric device. The central control unit controls conversion into the digital image signal corresponding to preset digital interface standards about the confirmed digital image signal. The central control unit controls output of the digital image signal into a second electric device.

Description

IMAGE SIGNAL PROCESSING SYSTEM IN THE FORM OF MULTIPLE MATRIX}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal processing system, and more particularly, to a multi-matrix format video signal processing system capable of multiple inputs and outputs of video signals and a conversion process between video signals.

Prior art linearly expandable broadcast and communication router architectures include both input cards and output cards. The broadcast and communication routers allow each of the plurality of outputs therefrom to be assigned a signal from any one of the plurality of inputs. For example, an N × M broadcast router has N inputs and M outputs connected together to a routing engine, which allows any one of the N inputs to be applied to each of the M outputs.

The broadcast router configuration can vary widely and may require, for example, a few inputs and but a large number of outputs, a plurality of inputs and a few outputs, or about the same number of inputs and outputs.

Linearly scalable routers allow users to start with smaller routers, which can be expanded later.

Such a conventional router performs only a function of supporting linear expansion, and does not have a signal processing function through conversion between video signals, which are various types of broadcast signals.

The present invention provides a multi-matrix format for converting a digital interface standard of a video signal when a digital interface standard (protocol) of a video signal input through an input port and an image signal to be output to an output port is different. An object of the present invention is to provide a video signal processing system.

In addition, an object of the present invention is to provide a multi-matrix image signal processing system that can generate and provide a video signal of various resolutions internally when not connected to an electrical device that provides a separate video signal. .

In addition, an object of the present invention is to provide a multi-matrix image signal processing system to directly change and update the EDID information or pre-stored EDID information obtained from the electrical device.

Another object of the present invention is to provide an image signal processing system of a multi-matrix format capable of HDCP processing by performing an HDCP authentication procedure for an electrical device that receives an image signal when the HDCP is set for an input image signal. It is done.

The multi-matrix video signal processing system of the present invention includes at least one input port, an input control means for receiving an image signal from a first electrical device, and an output port of an output control means corresponding to an input port of the input control means. And a signal switching means for performing signal switching so that the video signal is transmitted to the video signal, and at least one output port, and receiving the video signal from the signal switching means, converting the video signal into a video signal of a preset digital transmission method, Output control means for outputting the converted video signal to an output port connected to the device, an input control means, a signal switching means and an output control means to check the video signal and the input port from the first electrical device, and confirm The converted video signal into a video signal corresponding to the preset digital interface standard Fish, and a central control device for output to a second electric device connected to the output port corresponding to the identified input port.

In addition, the input control means preferably includes an input slot unit in which an input port is formed, and a signal converter which acquires a video signal or slot information from the input slot and converts the video signal into a TMDS signal.

In addition, the output control means includes an output slot portion in which an output port is formed, and a signal converter which receives a TMDS signal from the signal switching means and converts the signal into a video signal of a predetermined digital interface standard by the control of the central control apparatus. desirable.

In addition, the input control means confirms the HDCP setting state for the video signal from the first electrical device, the central control unit obtains the HDCP setting state from the input control means, and the HDCP for the second electric device connected to the output control means. It is preferable to perform authentication so that the video signal is output.

In addition, it is preferable that the central control apparatus performs image signal conversion between the DVI or HDMI system and the HD / SDI system.

In addition, the image signal processing system preferably includes a signal generator for generating a pattern signal supporting at least one resolution.

In addition, it is preferable that the signal generation unit obtains timing information from the central control apparatus, generates and outputs a pattern signal corresponding to the obtained timing information.

In addition, the output of the signal generator is preferably applied to the input port of the input control means, or applied to the third electrical device.

In addition, the input control means transmits the EDID information stored in each input port formed in each input slot according to the command of the central control device, the central control device receives the EDID information to update the EDID information by the user's setting, Preferably, the updated EDID information is applied to and stored in the input control means.

Further, the output control means transmits EDID information of the second electric device connected to each output port formed in each output slot according to the command of the central control device, and the central control device receives the EDID information and sets the EDID information by the user's setting. It is preferable to update and to update the updated EDID information to the input control means.

According to the present invention, when the digital interface standard (protocol) of the video signal input through the input port and the video signal to be output to the output port is different, the conversion of the digital interface standard of the video signal can be performed. It is effective to enable transmission and conversion between video signals.

In addition, when the present invention is not connected to an electric device that provides a separate video signal, it is possible to generate and provide a video signal of various resolutions in the internal, thereby providing a video signal and the like.

In addition, the present invention can directly change and update the EDID information or pre-stored EDID information obtained from the electrical device, it is possible to output the video signal according to the performance of the connected electrical device.

In addition, the present invention has the effect of enabling HDCP processing by performing the HDCP authentication procedure for the electrical device receiving the video signal when the HDCP setting state for the input video signal.

Hereinafter, the present invention will be described in detail with reference to the embodiments and drawings.

1 is a configuration diagram of a multi-matrix video signal processing system according to the present invention, and FIG. 2 is a configuration diagram of the signal generator of FIG. 1.

The video signal processing system includes an input port, an input control means 10 for receiving a video signal from an electric device (not shown), an output port, and receives a video signal from the signal switching means 30, Output control means 20 for converting a video signal of a preset digital transmission method and outputting the converted video signal to an output port connected to an electrical device (not shown), and corresponding to the input port of the input control means 10 A signal switching means 30 which performs signal switching so that an image signal is transmitted to an output port of the output control means 20, a signal generator 40 which generates an image signal (or a pattern signal) by itself, and a user An input unit 50 for acquiring a setting command, an update command, etc., an output unit 60 for visually or audibly displaying various information, and a communication unit for communicating with other electric devices through a network. Comprises a portion (70) and, by controlling the above components, the central control device 80 to the output port such as to allow the output of the video signal corresponding to the input receiving the video signal input port. However, in the present embodiment, the power supply unit for supplying power is not shown, but in the technical field to which the present invention belongs, the matters related to the technology for supplying the power supply are of course recognized only, the description and description thereof. Is omitted.

In detail, the input control means 10 is capable of communicating with input slots 1 to 6 (12) and input slots 1 to 6 (12) each provided with input ports for enabling connection with a plurality of electrical devices. And an input control unit 14 for acquiring an image signal or slot information from the input slot. Here, the electric device includes, for example, a DVD player, a camera, a SET TOP box, and the like.

Each of input slots 1 through 6 (12) has a plurality of input ports that can be connected to multiple electrical devices through these input ports. Input slots 1 through 6 (12) are characterized to handle digital interface specifications of video signals from connected electrical devices. That is, the input slots 1 to 6 (12) are elements capable of processing one or more of video signals according to, for example, HDMI, DVI, and HD-SDI methods. The input slots 1 to 6 (12) have a structure that can be attached and detached to the input control means 10 individually.

The input slots 1 to 6 (12) have a memory for storing resolution information (or timing information) of a video signal, digital interface standard information (for example, a video signal based on HDMI, DVI, or HD-SDI). do. Input ports formed in each of input slots 1 through 6 (12) store EDID information.

The input control unit 14 obtains the resolution information, the digital interface standard information, and the like of the video signal through the input slots 1 to 6 (12) and applies it to the central processing unit 80.

In addition, the input controller 14 includes a signal converter 15 which receives each video signal DVI, HDMI, and HD-SDI, converts it into a transition minimized differential signaling (TMDS) signal, and processes the same. The signal converter 15 converts the DVI and HDMI signals into TTL signals and processes them internally, converts the TTL signals into TMDS signals and applies them to the signal switching means 30. Alternatively, the signal converter 15 converts the HD-SDI signal into a TTL signal and processes it internally, converts the TTL signal into a TMDS signal and applies it to the signal switching means 30. However, the input control unit 14 may apply DVI and HDMI signals to the signal switching means 30 as they are.

The input control unit 14 also includes a slot control unit 16 for applying the information obtained from the above-described input slots 1 to 6 12 to the central control unit 80. The slot controller 16 determines whether the video signal is set to HDCP check, and if the HDCP check is set, parses the video signal and applies the detected key value to the central controller 80. Thereafter, under the control of the central controller 80, the video signal is decoded and applied to the signal converter 15 or to the signal switching means 30.

Next, the output control means 20 is capable of communicating with output slots 1 to 6 (22) and output slots 1 to 6 (22) each provided with output ports for enabling connection with a plurality of electrical devices. And an output control unit 24 for acquiring image signals or slot information from the output slots 1 to 6 (22). Here, the electric device includes, for example, a monitor, a TV, and the like.

Each of output slots 1 through 6 (22) has a plurality of output ports that can be connected to multiple electrical devices through these output ports. Output slots 1 through 6 (22) are characterized to handle digital interface specifications of video signals from connected electrical devices. That is, the output slots 1 to 6 22 are elements capable of processing one or more of video signals according to, for example, HDMI, DVI, and HD-SDI methods. The output slots 1 to 6 22 have a structure that can be detached and mounted to the output control means 20 individually.

The output slots 1 to 6 (22) contain EDID information of the electrical device connected to the corresponding output port, resolution information, digital interface standard information (e.g., video signal based on HDMI, DVI, or HD-SDI). It transmits to the central control unit 80 via the output control unit 24.

The output control unit 24 obtains EDID information, resolution information, digital interface standard information, etc. of the electric device through the output slots 1 through 6 (22), and applies them to the central processing unit 80.

In addition, the output control unit 24 receives a TMDS signal, and converts the signal to a digital interface standard image signal (DVI, HDMI, HD-SDI) of the format to be output to the electrical device connected to the output port 25 for processing. ). The signal conversion section 25 converts the TMDS signal into a TTL signal and internally processes it, converts the TTL signal into a DVI signal or an HDMI signal and applies it to the output slots 1 to 6 (22). Alternatively, the signal converter 25 converts the TMDS signal into a TTL signal and processes it internally, converts the TTL signal into an HD-SDI signal and applies it to the output slots 1 to 6 (22). This signal conversion is performed by the central control unit 80 to store the digital interface standard of the video signal to be output for the input video signal, and corresponding to the stored digital interface standard.

The output control section 24 also includes a slot control section 26 for applying the information obtained from the aforementioned output slots 1 to 6 22 to the central control device 80. The slot controller 26 determines whether the electric device connected to the output slots 1 to 6 22 is set to the HDCP check. If the HDCP check is set, the slot control unit 26 controls the central controller 80. The detected key value is received, and the video signal is encrypted and applied to the output slots 1 to 6 (22). That is, the output control unit 24 performs HDCP authentication on the electric device, so that the video signal is output.

Next, the signal switching means 30 performs signal switching so that the image signal is transmitted to the output port of the output control means corresponding to the input port of the input control means. For example, when six input ports are provided in each of the input slots 1 to 6 (12), 36 input image signals are provided, and six output ports are provided in each of the output slots 1 to 6 (22). For one output, a signal may be switched so that one input image corresponds to one output or one input image corresponds to a plurality of outputs.

Next, the signal generator 40 is a device that generates a pattern signal supporting at least one resolution. The signal generator 40 obtains timing information from the central controller 80, generates and outputs a pattern signal corresponding to the obtained timing information. The signal generator 40 will be described in detail with reference to FIG. 2 below.

The input unit 50 corresponds to a means for a user to input a necessary command to the central control apparatus 80 and may be an input unit in the form of a touch screen formed on the output unit 60.

The output unit 60 displays data, information, etc. from the central control unit 80, and displays a command input by the user through the input unit 50, or displays information so that the user can input. do.

The communication unit 70 is an interface means for enabling a network with other electric devices through, for example, Ethernet, USB Host, UART, and the like.

The central control unit 80 controls all of the above-described components, and receives a video signal according to the HDMI, DVI, or HD-SDI method from an input port, so that 1: 1 or 1: N (N is 2 or more, total The number within the number of output ports) enables output through the output port without conversion of the digital interface standard or after the conversion process of the digital interface standard. The central control unit 80 displays the input port and the output port information through the output unit 60 so that the user can set the input port of the video signal and the output port of the video signal. Accordingly, a user may select an input port and select at least one output port to output an image signal to be applied to the input port. The central control apparatus 80 designates (or connects) an input port and an output port corresponding to this input port by this selection.

At this time, the input slots 1 to 6 (12) having the selected input port and the output slots 1 to 6 (22) having the output port selected to correspond to the selected input port are connected to the image signal according to the same type of digital interface standard. In the case of processing, this setting enables output to the selected output port as it is, without conversion of the video signal. The central control unit 80 causes the input control unit 14 to acquire an image signal and to perform signal switching of the obtained image signal to the output port selected by the switching means 30. The central controller 80 controls the output controller 24 to output the video signal from the signal switching means 30 to the selected output port without conversion of the video signal.

In addition, the input slots 1 to 6 (12) having the selected input port and the output slots 1 to 6 (22) having the output port selected to correspond to the selected input port are used to output image signals according to different types of digital interface standards. When processing, the central control unit 80 allows the video signal conversion between the DVI or HDMI system and the HD-SDI system to be performed. For example, input slot 1 (or input port) is a device that receives and processes a DVI video signal, and at least one of output slot 1 (or output port) outputs an HD-SDI video signal. In the case of the device, the central processing unit 80 controls the signal conversion unit 25 of the output control unit 24 to convert the input video signal into an HD-SDI video signal and output the same through the corresponding output port. do.

As described above, the central control unit 80 converts between video signals so as to enable output to the input port or input slots 1 to 6 (12) or to selected output ports or output slots 1 to 6 (22). If necessary, such conversion is performed, and if conversion between video signals is unnecessary, control is performed so that the output of the video signal is performed without such conversion.

In the present invention, when the video signal is a DVI signal or an HDMI signal, it can provide an HDCP function. As described above, the input control means 10 confirms the HDCP setting state for the video signal from the electric device, and applies the confirmed HDCP setting state to the central control device 80. The central control unit 80 obtains the HDCP setting state from the input control unit 10, performs HDCP authentication on the electric device connected to the output control unit 20, and controls the video signal to be output. This HDCP function may also be performed along with the process of outputting the input signal through the output port in the 1: 1 or 1: N described above.

In addition, the central control unit 80 provides a function for the user to set and update the EDID information. In setting or updating the EDID information, for example, color character, timings, vendor / product ID, EDID version, EDID Extensions, EDID checkSum, etc. can be set or updated in detail.

The central control unit 80 receives EDID information from the input slots 1 through 6 (12) selected through the input unit 50 through the slot control unit 16, or the slot control unit 26 from the output slots 1 through 6 (22). ), The EDID information is received, and the settable EDID information is displayed through the output unit 60. The user may check the current EDID information through the output unit 60 and set or change a part of the desired EDID information through the input unit 50. Accordingly, the central control unit 80 updates the set or changed EDID information, and applies the updated EDID information to the corresponding input slots 1 to 6 (12) through the slot control unit 16 to be stored.

As illustrated in FIG. 2, the signal generator 40 may include an image storage unit 42 that stores data such as an image corresponding to a pattern number or timing information, and another external electric device by receiving a pattern signal. Output unit 44 to enable the output to the output or the input port and the timing information or pattern number is received from the central control unit 80 to generate a pattern signal to be output through the output unit 44 And an image generator 46.

The central control unit 80 displays the selectable pattern number or timing information through the output unit 60 so that the user can set the pattern number or timing information, and allows the user to select through the input unit 50. do. The central controller 80 applies the selected pattern number or timing information to the image generating unit 46 so that the pattern signal can be generated accordingly. Such a pattern signal may be set to support various resolutions.

When the pattern signal is applied to an electric device (for example, a monitor), the image display of the electric device can be inspected. When the pattern signal is applied to the input port of the input control means 10, even if there is no external image source, it is possible to directly generate an image signal, and output to the electrical device connected to the output control means 20.

As described above, the present invention is not limited to the specific preferred embodiments described above, and any person having ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims. It is to be understood that such changes may be made, and such changes will fall within the scope of the claims.

1 is a block diagram of a multi-matrix video signal processing system according to the present invention.

FIG. 2 is a diagram illustrating a signal generator of FIG. 1.

Claims (9)

Input control means having at least one input port and receiving a digital video signal from a first electrical device; Signal switching means for performing signal switching so that an image signal is transmitted to an output port of the output control means corresponding to the input port of the input control means; Output control that has at least one output port, receives the video signal from the signal switching means, converts the video signal into a digital video signal of a predetermined digital transmission method, and outputs the converted video signal to the output port connected to the second electrical device Means; Control the input control means, the signal switching means and the output control means to confirm the digital video signal and the input port from the first electrical device, and the confirmed digital video signal is converted into a digital video signal corresponding to a preset digital interface standard. A central control device, converted to be output to a second electrical device connected to an output port corresponding to the identified input port; And a signal generator for acquiring timing information of one of a plurality of resolutions from a central controller, and generating and outputting a pattern signal in response to the obtained timing information. The method of claim 1, The input control means includes an input slot unit having an input port, and a signal converter for acquiring a digital video signal or slot information from the input slot and converting the digital video signal into a TMDS type signal. Video signal processing system. The method of claim 2, The output control means includes an output slot section in which an output port is formed, and a signal converter which receives a TMDS signal from the signal switching means and converts the signal into a digital video signal of a predetermined digital interface standard under the control of the central control apparatus. Multi-matrix video signal processing system. The method of claim 1, The input control means confirms the HDCP setting state for the video signal from the first electrical device, the central control unit obtains the HDCP setting state from the input control means, and performs the HDCP authentication for the second electric device connected to the output control means. And controlling the video signal to be output. The method according to any one of claims 1 to 4, The central control unit is a video signal processing system of the multi-matrix format, characterized in that the conversion of the video signal between the DVI or HDMI and HD / SDI. delete delete The method of claim 1, The output of the signal generator is applied to the input port of the input control means, or applied to the third electrical device, the image signal processing system of the multi-matrix format. The method of claim 1, The input control means stores EDID information of the first electrical device connected to each port, the central control device receives the EDID information, updates the EDID information by the user's setting, and applies the updated EDID information to the input control means. And a multi-matrix format video signal processing system.

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