WO2019017548A1 - Display device and control method therefor - Google Patents

Display device and control method therefor Download PDF

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Publication number
WO2019017548A1
WO2019017548A1 PCT/KR2018/002173 KR2018002173W WO2019017548A1 WO 2019017548 A1 WO2019017548 A1 WO 2019017548A1 KR 2018002173 W KR2018002173 W KR 2018002173W WO 2019017548 A1 WO2019017548 A1 WO 2019017548A1
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WO
WIPO (PCT)
Prior art keywords
transmission line
video signal
error
control unit
signal
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PCT/KR2018/002173
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French (fr)
Korean (ko)
Inventor
김세준
윤석현
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삼성전자(주)
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Publication of WO2019017548A1 publication Critical patent/WO2019017548A1/en

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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
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G5/006—Details of the interface to the display terminal
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0297—Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns

Definitions

  • the present invention relates to a display device and a control method thereof, and more particularly, to a display device and a control method thereof for outputting a video signal using a part of transmission lines to a display.
  • the display device uses an interface system for transmitting video and graphic data between the chip and the chip or between the device and the device.
  • the interface system transmits data input through a plurality of physical transmission lines through one or more physical transmission lines.
  • video and graphic signals input from a plurality of apparatuses can be transmitted to a display through one or a small number of transmission lines.
  • a display apparatus comprising: a signal processing unit including an output terminal of a video signal; A display unit including an input terminal of a video signal; A first transmission line and a second transmission line connected in parallel between an output terminal of the signal processing unit and an input terminal of the display unit and capable of transmitting an image signal from an output terminal to an input terminal; And a control unit for controlling the switching to the second transmission line when a video signal is transmitted through the first transmission line and an error occurs in the first transmission line during transmission of the video signal.
  • a parallel-to-serial conversion unit provided between an output terminal of the signal processing unit and the first transmission line; And a serial-parallel converter provided between the first transmission line and an input terminal of the display unit. Accordingly, the transmission efficiency can be improved by outputting a video signal input through a plurality of channels to a display through a small number of transmission lines.
  • the controller may detect an error with respect to the first transmission line during a data enable period of the video signal and may switch to the second transmission line during a data disable period of the video signal . Accordingly, since the transmission line is changed in the section in which the data transmission is inactivated, seamless image transmission is possible.
  • the control unit may detect an error in each of the first transmission line and the second transmission line and switch to a transmission line having a small number of error occurrences. Accordingly, it is possible to stably transmit the video signal by selecting the transmission line with the smallest error occurrence.
  • the control unit may detect an error with respect to the first transmission line based on reference information of a normal video signal. Accordingly, it is possible to store a reference value of a normal video signal, and compare the transmitted video signal with the reference video signal to judge whether or not an error has occurred.
  • a control signal may be transmitted to the multiplexer so as to selectively output the video signal through one of the transmission line and the second transmission line. Accordingly, it is possible to switch to another transmission line when an error occurs in the transmission line being used.
  • the control unit may change a transmission setting value of a video signal transmitted through the first transmission line when an error occurs in the first transmission line. Accordingly, the error detection result for the transmission line can be fed back to reduce the possibility of error in the transmission line.
  • the control unit may set different transmission setting values of the video signals for the first transmission line and the second transmission line, respectively. Accordingly, it is possible to effectively cope with changes in temperature and channel environment by applying different settings to each transmission line.
  • the control unit may be provided between the first transmission line and the second transmission line and an input end of the display unit. Accordingly, it is possible to detect an error in the transmission line by using the video signal transmitted through the transmission line.
  • the error processing operation can be controlled for the first channel. Accordingly, an error processing operation is performed on an activated channel among a plurality of channels through which a video signal is output.
  • a method of controlling a display device comprising: outputting a video signal by an output terminal of a signal processing unit; Transmitting a video signal from an output terminal to an input terminal through a first transmission line of the first transmission line and a second transmission line connected in parallel between an output terminal of the signal processing unit and an input terminal of the display unit; And switching to a second transmission line when an error occurs in the first transmission line during transmission of the video signal by the control unit.
  • the transmission efficiency can be improved by outputting a video signal input through a plurality of channels to a display through a small number of transmission lines.
  • a multiplexer provided between the control unit and an input terminal of the display unit for selectively outputting a video signal transmitted through any one of the first transmission line and the second transmission line, And transmitting the control signal to the multiplexer so as to selectively output the video signal through one of the transmission line and the second transmission line. Accordingly, it is possible to switch to another transmission line when an error occurs in the transmission line being used.
  • the control unit may be provided between the first transmission line and the second transmission line and an input end of the display unit. Accordingly, it is possible to detect an error in the transmission line by using the video signal transmitted through the transmission line.
  • first transmission line and the second transmission line are provided in parallel to the first channel and the second channel from which the video signal is output from the output terminal of the signal processing unit, And controlling the error processing operation for the first channel. Accordingly, an error processing operation is performed on an activated channel among a plurality of channels through which a video signal is output.
  • FIG. 1 is a block diagram showing the configuration of a display device according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an example of the configuration of an interface according to an embodiment of the present invention.
  • FIG 3 is an illustration showing an example of the configuration of an interface according to an embodiment of the present invention.
  • FIG. 4 illustrates an example of an error processing operation according to an embodiment of the present invention.
  • FIG 5 is an example of a flow of an operation mode according to an embodiment of the present invention.
  • FIG. 7 is an example of a configuration for changing a set value for signal transmission by feeding back an error detection result according to an embodiment of the present invention.
  • FIG. 8 illustrates an exemplary configuration for applying different set values for signal transmission on a transmission line according to an exemplary embodiment of the present invention.
  • FIG. 9 is a diagram illustrating a configuration for transmitting an image signal when a plurality of channels are activated according to an exemplary embodiment of the present invention.
  • FIG. 10 is a diagram illustrating a configuration for transmitting an image signal output from an active channel among a plurality of channels according to an exemplary embodiment of the present invention.
  • FIG. 11 is a diagram illustrating a configuration for transmitting an image signal output from an active channel among a plurality of channels according to an exemplary embodiment of the present invention.
  • FIG. 12 is a flowchart illustrating a method of controlling a display device according to an embodiment of the present invention.
  • the display device 10 of the present invention includes a signal receiving unit 11, a signal processing unit 12, an interface 13, a display unit 14, a control unit 15, an input receiving unit 16, And a storage unit 17, and the interface 13 includes the configuration of the error processing unit 135.
  • the display device 10 may be implemented, for example, as a TV, a smart phone, a tablet, and a PC.
  • the configuration included in the display device 10 is not limited to the embodiment of the present invention, but may be configured excluding some configurations, or may be implemented including additional other configurations.
  • the display device 10 of the present invention can transmit a video signal to the display unit 14 through one or a small number of transmission lines using the above configuration.
  • the signal receiving unit 11 receives a broadcast signal or a video signal.
  • the video signal may comprise, for example, a video or graphics signal.
  • the signal receiving unit 11 may be provided in various formats according to the specifications of the received broadcast signal and the video signal and the implementation form of the display device 10.
  • the signal receiving unit 11 may be implemented as a tuner that receives an RF (Radio Frequency) broadcast signal or a satellite signal transmitted from a broadcasting station.
  • the signal receiving unit 11 can receive a video signal from a High Definition Multimedia Interface (HDMI) device such as a DVD player, a game machine, or a PC.
  • HDMI High Definition Multimedia Interface
  • the signal processing unit 12 performs a predetermined signal processing process on the broadcast signal or the video signal received by the signal receiving unit 11.
  • Examples of the signal processing performed by the signal processing unit 12 include demultiplexing, decoding, de-interlacing, scaling, noise reduction, detail enhancement, ), And the kind thereof is not limited.
  • the signal processing unit 12 may be implemented as a system-on-chip (SOC) that integrates various functions or an image processing board equipped with individual components capable of independently performing each process.
  • SOC system-on-chip
  • the signal processing unit 12 further includes an additional configuration for transmitting the video signal through the interface. That is, the signal processing unit 12 includes a frame controller, an RGB data encoder / decoder, a scrambler, and an 8b / 10b encoder / decoder for converting a video signal into a form suitable for transmission And the like.
  • the interface 13 transmits the video signal output from the signal processing unit 12 to the display unit 14 through one or more transmission lines.
  • the interface 13 includes a parallel-to-serial converter 22, a first transmission line 131 and a second transmission line 132, An error processing unit 135 and a serial-to-parallel conversion unit 25, and may further include other additional configurations.
  • the error processing unit 135 of the interface 13 receives an error generated in the first transmission line 131 while the video signal outputted from the signal processing unit 12 is transmitted through the first transmission line 131, . At this time, the error processing unit 135 switches the first transmission line 131 to transmit the video signal through the second transmission line 132 instead of the first transmission line 131 when the error occurs.
  • the display unit 14 receives the broadcast signal or video signal output from the signal processing unit 12 through the interface 13 and displays the video based on the received video signal.
  • the display unit 14 may be implemented in various forms such as a PDP (Plasma Display Panel), an LCD (Liquid Crystal Display), an OLED (Organic Light Emitting Diodes), a flexible display, . ≪ / RTI >
  • the input receiving unit 16 receives a user input for controlling at least one function of the display device 10.
  • the input receiving unit 16 may receive a user input for selecting a part of a user interface displayed on the display unit 14.
  • the input receiving unit 16 may be implemented as an input panel provided outside the display device 10 or a remote controller communicating with the display device 10 in an infrared manner.
  • the input receiving unit 16 may be implemented as a keyboard, a mouse, or the like connected to the display device 10, or may be implemented as a touch screen provided in the display device 10.
  • the storage unit 17 stores the broadcasting signal or the video signal received by the signal receiving unit 11. [ The storage unit 17 reads, writes, edits, deletes, and updates data of the stored broadcast signals or video signals.
  • the storage unit 17 may be implemented as a nonvolatile memory such as a flash memory or a hard disk drive so as to store data regardless of whether the system power of the display device 10 is provided or not. do.
  • the main control unit 15 performs a control process for controlling a plurality of functions that the display apparatus 10 can perform.
  • the main control unit 15 can be realized by a CPU (Central Processing Unit) and includes three areas of control, calculation, and register.
  • the control area interprets program instructions and directs the operation of each configuration of the display device 10 according to the meaning of the interpreted instruction.
  • the arithmetic operation area performs an arithmetic operation and a logical operation, and performs operations necessary for each configuration of the display device 10 to operate according to an instruction of the control area.
  • the register is a storage area for storing necessary information while executing an instruction in the CPU, stores instructions and data for each configuration of the display device 10, and stores the calculated result.
  • the display device 10 of the present invention transmits the video signal output from the signal processing unit 12 to the display unit 14 by using the configuration of the interface 13.
  • the interface 13 is a detailed configuration for transmitting a video signal and includes a parallel-to-serial converter 22, a first transmission line 131 and a second transmission line 132, an error processing unit 135, And a serial-to-parallel converter 25. At least one of the first transmission line 131 and the second transmission line 132 may include one or more sub transmission lines.
  • the error processing unit 135 includes an error control unit 136 for controlling error detection and transmission line selection for the transmission line and a multiplexer 233 for outputting a signal transmitted through the selected transmission line. ).
  • the error control unit 136 and the multiplexer 233 are provided between the first transmission line 131 and the second transmission line 132 and the input end of the display unit 14 so that the first transmission line 131 and the second transmission line 131, And detects the error generated in the transmission line 132 and performs a control operation accordingly.
  • a video signal output through a plurality of output lines at the output terminal of the signal processing unit 12 is transmitted through the first transmission line 131 and the second transmission line via the parallel-to-serial conversion unit 22 .
  • the video signal transmitted through each of the first transmission line 131 and the second transmission line 132 is controlled by the error control unit 136 so that only one of the two video signals is output through the multiplexer 233 do.
  • the output video signal is input to the input terminal of the display unit 14 through the plurality of input lines through the serial-parallel conversion unit 25 to restore the original video signal.
  • the error control unit 136 detects an error with respect to the first transmission line 131 while transmitting the video signal through the first transmission line 131.
  • the error control unit 136 also transmits the video signals through the first transmission line 131 and the second transmission line 132 in the same manner and transmits the first transmission line 131 and the second transmission line 132 132, respectively.
  • the error control unit 136 switches to the second transmission line 132 without using the first transmission line 131, And outputs a video signal transmitted through the video signal processor 132.
  • the error control unit 136 transmits a control signal based on the error detection result to the multiplexer 233.
  • the error control unit 136 outputs an error flag ERR FLAG as a control signal for switching to the second transmission line 132 when the error occurs in the first transmission line 131 as '1' 233.
  • the multiplexer 233 outputs a video signal transmitted through the second transmission line 132 with reference to the control signal transmitted from the error control unit 136.
  • the error control unit 136 outputs the error flag ERR FLAG as '0' as a control signal for holding the first transmission line 131 To the multiplexer 233. Accordingly, the multiplexer 233 refers to the transmitted control signal and outputs a video signal transmitted through the first transmission line 131 without switching the transmission line.
  • FIG 3 is an illustration showing an example of the configuration of an interface according to an embodiment of the present invention.
  • the display apparatus 10 of the present invention transmits the video signal output from the signal processing unit 12 to the display unit 14 by using the configuration of the interface 13.
  • the interface 13 is a detailed configuration for transmitting a video signal, and includes the same configuration as that of FIG. 2, and further includes an additional configuration. That is, the interface 13 includes the parallel-to-serial conversion section 22, the first transmission line 131 and the second transmission line 132, the error processing section 135 and the serial-to-parallel conversion section 25, And further includes a first mux 231, a second mux 232, and a FIFO 24 as additional configurations.
  • the first and second muxes 231 and 232 may be any one of a first channel (see 91 in FIG. 9) and a second channel (see 92 in FIG. 9) output from the output of the signal processor 12 To the first transmission line 131 and the second transmission line 132, respectively.
  • the first transmission line 131 and the second transmission line 131 And to control the output to the transmission line 132.
  • both the first channel 91 and the second channel 92 are activated to output an image at a frequency of 120 Hz to the UHD 4K monitor And may transmit the image signal through the first transmission line 131 and the second transmission line 132.
  • only the first channel 91 may be activated to transmit the image signal through the first transmission line 131 among the two transmission lines.
  • the error control unit 136 transmits the image signal through the first transmission line 131 and transmits the image signal to the first transmission line 131 To detect an error.
  • the error control unit 136 equally transmits the video signal through the first transmission line 131 and the second transmission line 132 in the state in which the first channel 91 is active, 1 transmission line 131 and the second transmission line 132, respectively.
  • the second transmission line 132 is switched to use the data of the video signal transmitted through the second transmission line 132.
  • first transmission line 131 and the second transmission line 132 may include one or more sub transmission lines.
  • additional transmission lines may be provided in addition to the first transmission line 131 and the second transmission line 132.
  • the number of transmission lines implemented in the display device 10 of the present invention is not limited to the illustrated example, and may be variously set according to monitor specifications, transmission frequency, and the like.
  • a first in first out (FIFO) 24 is provided between the error control unit 136 and the multiplexer 233 and temporarily stores the video signal transmitted through the first transmission line 131 and the second transmission line 132 For example, a buffer.
  • a transitional error due to the switching may occur.
  • the FIFO 24 is storing the video signal transmitted through the first transmission line 131, the stored video signal can be used when an error occurs due to the switching to the second transmission line 132.
  • a panel processing unit 31 that is a circuit that performs the processing of the panel processing.
  • FIG. 4 illustrates an example of an error processing operation according to an embodiment of the present invention.
  • the display device 10 of the present invention performs different operations for each time interval in transmitting an image signal through the interface 13.
  • the error controller 136 detects an error with respect to the first transmission line during transmission of the video signal through the first transmission line 131, and selects the transmission line according to the detection result .
  • the error control unit 136 performs an operation (S40) for detecting an error with respect to the first transmission line 131 during the data enable period 45 during which data transmission is activated.
  • the error control unit 136 may also select one of the first transmission line 131 and the second transmission line 132 based on the error detection result during the data disable period 46 during which the data transmission is inactivated (S41).
  • the error control unit 136 when an error is detected in the first transmission line 131 as a result of error detection, the error control unit 136 outputs a video signal, which is transmitted through the second transmission line 132 by switching to the second transmission line 132 . If no error occurs in the first transmission line 132 as a result of the error detection, the error control unit 136 maintains the first transmission line 131 as it is and transmits the video signal.
  • the transmission line is changed in the section in which the data transmission is inactivated, it is possible to transmit the seamless image.
  • the data enable period 45 and the data disable period 46 are alternately repeated with a predetermined period. That is, the error control unit 136 may alternately repeat the error detection operation S40 and the transmission line selection operation S41 to transmit the video signal through the transmission line having the highest transmission efficiency in each section.
  • the error control 136 may perform an operation S40 of detecting an error for each of the first transmission line 131 and the second transmission line 132 during the data enable period 45 have. For example, during the data enable period 45, the number of errors occurring for each of the first transmission line 131 and the second transmission line 132 may be detected.
  • the error control unit 136 compares the number of times of occurrence of errors with respect to each of the first transmission line 131 and the second transmission line 132 during the data disable period 46, Select the line. Accordingly, it is possible to stably transmit the video signal by selecting the transmission line with the smallest error occurrence.
  • FIG. 5 is an example of a flow of an operation mode according to an embodiment of the present invention. As shown in FIG. 5, the display device 10 of the present invention switches an operation mode to the following operation mode when transmitting an image signal through the interface 13.
  • the error control unit 136 transmits the video signal through the first transmission line 131 and the second transmission line 132 in the same manner during the data enable period 45 during which data transmission is activated .
  • the error control unit 136 selects the first transmission line 131 as a default transmission line for transmitting the video signal, sets the error flag ERR FLAG as a control signal for selecting the first transmission line 131 to ' 0 '.
  • the error control unit 136 performs an operation of detecting an error in each of the first transmission line 131 and the second transmission line 132, while transmitting the video signal.
  • the error control unit 136 in operation S521, The line 131 is maintained. At this time, the error control unit 136 holds the first transmission line 131 previously selected in operation S50, and keeps the output value of the error flag ERR FLAG at '0'.
  • the error control unit 136 in operation S522, Line 132 is selected. At this time, the error control unit 136 can output the error flag ERR FLAG as '1' as a control signal for selecting the second transmission line 132.
  • the operation S521 and the operation S522 are performed during the data disable period 46 during which the data transmission is inactive, and thereafter, when the data enable period 45 is entered again, the operation S50 is performed, and the above process is repeated.
  • the error control unit 136 of the present invention detects errors in the first transmission line 131 by comparing the data D0 of the video signal input from the first transmission line 131 with the data D0 And compares the reference information L0 stored in the lookup table 137 with the previously stored reference information L0.
  • the reference information L0 includes at least one data that can be determined as a normal video signal, and includes at least one of, for example, 8B / 10B encoded data, cyclic redundancy check (CRC) data, and a specific code value.
  • 8B / 10B encoded data includes at least one of, for example, 8B / 10B encoded data, cyclic redundancy check (CRC) data, and a specific code value.
  • CRC cyclic redundancy check
  • the 8B / 10B encoded data is a value obtained by applying an encoding method for converting 8 bits to 10 bits for a video signal.
  • the error control unit 136 generates an 8B / 10B encoded data by encoding the video signal D0 and the reference information L0, It is possible to determine whether or not the first transmission line 131 is erroneous.
  • the CRC data is a value to which a cyclic redundancy check method is applied to check whether there is an error in data transmitted when data is transmitted.
  • the CRC value is calculated and transferred to the data before transmission, and the CRC value is calculated again as the value of the data received after the data transmission is completed, thereby comparing the two values.
  • the CRC value stored in the look-up table 137 matches the CRC value calculated and transmitted through the first transmission line 131.
  • the error controller 136 can determine whether the first transmission line 131 is erroneous or not according to whether the CRC values match.
  • a specific code value can be used as the reference information L0 previously stored in the look-up table 137.
  • the error control unit 136 can compare the code value set before transmission of data with the code value after transmission to determine whether there is an error with respect to the first transmission line 131.
  • the error control unit 136 compares the data D0 of the video signal transmitted through the first transmission line 131 with the reference information L0 stored in the look-up table 137.
  • the error control unit 136 determines that the data D0 of the video signal is a normal signal and outputs an error flag as a control signal as '0' And transmits it to the multiplexer 233.
  • the error controller 136 determines that the data D0 of the video signal is an abnormal signal and outputs an error flag as a control signal of '1' And transmits it to the multiplexer 233.
  • the interface 13 of the present invention further includes an error compensator 71 as a detailed configuration.
  • the error control unit 136 detects an error in the first transmission line 131 while transmitting the video signal through the first transmission line 131.
  • the error control unit 136 transmits the detection result to the error compensation unit 71 in order to feed back the result of the error detection.
  • the error control unit 136 transmits an error occurrence signal to the error compensation unit 71.
  • the error compensating unit 71 can change the transmission setting value of the video signal transmitted through the first transmission line 131 based on the error occurrence signal.
  • the transmission setting value may include, for example, an equalizer parameter, a signal strength, and the like.
  • the error compensating unit 71 can lower the possibility of error occurrence in transmitting the video signal through the first transmission line 131 by changing the set value of the equalizer parameter or the like when an error occurs.
  • FIG. 8 illustrates an exemplary configuration for applying different set values for signal transmission on a transmission line according to an exemplary embodiment of the present invention.
  • the interface 13 of the present invention further includes a first error compensating unit 81 and a second error compensating unit 82 as detailed configurations.
  • the first error compensating unit 81 and the second error compensating unit 82 are provided between the signal processing unit 12 and the first transmission line 131 and the second transmission line 132.
  • the first error compensating unit 81 and the second error compensating unit 82 set transfer setting values of the different image signals for the first transmission line 131 and the second transmission line 132.
  • the transmission setting value can be set according to the error detection result for each of the two transmission lines 131 and 132 during transmission of the video signal.
  • the transmission settings may be set to correspond to different specific environmental conditions prior to transmission of the video signal through the first transmission line 131 and the second transmission line 132.
  • the first error compensator 81 may be configured to compensate for the error of the image transmitted through the first transmission line 131
  • the equalizer parameter for the signal can be set to a value suitable for the room temperature environment.
  • the second error compensating unit 82 may set the equalizer parameter for the video signal transmitted through the second transmission line 132 to a value suitable for the high temperature environment.
  • a video signal is transmitted through the first transmission line 131, and in a high-temperature environment, the video signal is transmitted through the second transmission line 132, thereby reducing the possibility of error occurrence.
  • FIG. 9 is a diagram illustrating a configuration for transmitting an image signal when a plurality of channels are activated according to an exemplary embodiment of the present invention.
  • FIG. 9 shows an example in which both channels are used, and for example, video signals are transmitted using both channels for a high-resolution image.
  • the video signal outputted from the output terminal of the signal processing unit 12 is transmitted to the first channel 91 and the second channel 92 And is input to the first transmission line 131 and the second transmission line 132.
  • the first and second muxes 231 and 232 transmit the image signal through the first channel 91 and the second channel 92 activated based on the control signal received from the signal processing unit 12 To the first transmission line 131 and the second transmission line 132, respectively.
  • the video signal output from the activated first channel 91 and the second channel 92 and transmitted through the first transmission line 131 and the second transmission line 132 is subjected to error processing
  • the operation can be controlled.
  • FIG. 10 is a diagram illustrating a configuration for transmitting an image signal output from an active channel among a plurality of channels according to an exemplary embodiment of the present invention.
  • FIG. 10 shows an example in which an image signal is transmitted using only one channel activated for an image having a small resolution, for example, when any one of the two channels is idle.
  • the video signal output from the output terminal of the signal processing unit 12 is output through the first channel 91 of the first channel 91 and the second channel 92 to be transmitted through the first transmission line 131 ) And the second transmission line 132.
  • the first and second muxes 231 and 232 transmit the image signal output through the first channel 91 activated on the basis of the control signal received from the signal processing unit 12 to the first transmission line 131 and the second transmission line 132, respectively.
  • FIG. 11 is a diagram illustrating a configuration for transmitting an image signal output from an active channel among a plurality of channels according to an exemplary embodiment of the present invention.
  • Fig. 11 shows an example in which the error processing operation is controlled in the same manner as the method explained in Fig. 10 when the first channel 91 is in an idle state, which is different from the case of Fig.
  • step S70 the video signal is output by the output terminal of the signal processing unit 12.
  • the error control section 136 controls the first transmission line 131 and the second transmission line 131, which are connected in parallel between the output terminal of the signal processing section 12 and the input terminal of the display section 14, 132 through the first transmission line 131 from the output terminal to the input terminal.
  • the operation S71 includes an operation of parallel-serial-converting the video signal output from the output terminal of the signal processing unit 12 through the plurality of output lines to the first transmission line 131, Parallel conversion so that the video signal input from the input terminal of the display unit 14 is input to the input terminal of the display unit 14 through the plurality of input lines.
  • the error control unit 136 switches to the second transmission line 132 in operation S72.
  • the operation S72 includes an operation of detecting an error with respect to the first transmission line 131 during the data enable period 45 of the video signal and an operation of detecting an error during the data disable period 46 of the video signal by the second transmission line 132 ). ≪ / RTI >
  • operation S72 may include detecting an error for each of the first transmission line 131 and the second transmission line, and switching to a transmission line with a small number of error occurrences.
  • operation S72 may further include detecting an error for the first transmission line 131 based on reference information of a normal video signal.
  • Operation S72 may also include transmitting a control signal to the multiplexer 233 to selectively output the video signal through either the first transmission line 131 or the second transmission line 132.
  • the operation S72 may include an operation to change a transmission setting value of a video signal transmitted through the first transmission line 131 when an error occurs in the first transmission line 131.
  • the operation S72 may include setting different transmission setting values of the video signal for the first transmission line 131 and the second transmission line 132, respectively.
  • the error control unit 236 may be provided between the first transmission line 131 and the second transmission line 132 and between the input ends of the display unit 14.
  • the first transmission line 131 and the second transmission line 132 are connected to the first channel 91 and the second channel 92 from which the video signal is output from the output terminal of the signal processing unit 12, May be provided in parallel. At this time, if the second channel 92 is idle, it may include an operation of controlling an error handling operation for the first channel 91.

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The purpose is achieved by a display device according to the present invention, the display device comprising: a signal processing unit including an output terminal of an image signal; a display unit including an input terminal of an image signal; a first transmission line and a second transmission line connected in parallel between the output terminal of the signal processing unit and the input terminal of the display unit, and capable of transmitting an image signal from the output terminal to the input terminal; and a control unit for performing control to transmit an image signal through the first transmission line and switch from the first transmission line to the second transmission line when an error occurs in the first transmission line during transmission of the image signal.

Description

디스플레이장치 및 그 제어방법Display device and control method thereof
본 발명은 디스플레이장치 및 그 제어방법에 관한 것으로서, 보다 상세하게는 영상신호를 전송라인 중 일부를 사용하여 디스플레이로 출력하기 위한 디스플레이장치 및 그 제어방법에 관한 것이다.The present invention relates to a display device and a control method thereof, and more particularly, to a display device and a control method thereof for outputting a video signal using a part of transmission lines to a display.
디스플레이장치는, 칩과 칩, 혹은 디바이스와 디바이스 간 비디오 및 그래픽 데이터의 전송을 위해 인터페이스 시스템을 사용한다. 인터페이스 시스템은 복수개의 물리적 전송라인을 통해 입력되는 데이터를 하나 이상의 물리적 전송라인을 통해 전송한다. The display device uses an interface system for transmitting video and graphic data between the chip and the chip or between the device and the device. The interface system transmits data input through a plurality of physical transmission lines through one or more physical transmission lines.
특히, 영상 출력 장치에 적용되는 경우, 다수의 장치로부터 입력되는 비디오 및 그래픽 신호를 하나 또는 적은 수의 전송라인을 통해 디스플레이로 전송할 수 있다. In particular, when applied to a video output apparatus, video and graphic signals input from a plurality of apparatuses can be transmitted to a display through one or a small number of transmission lines.
그러나, 이러한 기술은 디바이스 간 연결 시 케이블 채널 환경, 신호 손실(loss), 전자파 간섭(EMI) 및 주변 온도 등 다양한 요인으로 인해 신호를 전송하는 전송라인에 에러가 발생할 수 있다.However, this technique may cause errors in transmission lines transmitting signals due to various factors such as cable channel environment, signal loss, electromagnetic interference (EMI) and ambient temperature when connecting devices.
또한, 이러한 문제로 인해 사용자가 시청하는 화면에 영향을 미치게 되고, 화면이 깨지거나 영상이 끊기는 등 영상의 품질을 보장하기 어렵다.In addition, such a problem affects a screen viewed by a user, and it is difficult to guarantee the quality of an image such as a broken screen or a broken image.
따라서, 본 발명의 목적은, 인터페이스를 이용하여 영상신호를 전송함에 있어, 사용중인 전송라인에 문제가 생기는 경우에도 안정적으로 데이터를 전송하기 위한 디스플레이장치 및 그 제어방법을 제공하는 것이다. Accordingly, it is an object of the present invention to provide a display device and a control method thereof for reliably transmitting data even when a problem occurs in a transmission line in use when transmitting an image signal using an interface.
또한, 본 발명의 또 다른 목적은, 인터페이스를 이용하여 영상신호를 전송함에 있어, 환경적인 요인에 상관 없이 시청되는 영상의 품질을 보장할 수 있는 디스플레이장치 및 그 제어방법을 제공하는 것이다.It is still another object of the present invention to provide a display device and a control method thereof that can guarantee the quality of an image to be viewed regardless of environmental factors when transmitting an image signal using an interface.
상기 목적은, 본 발명에 따라, 디스플레이장치에 있어서, 영상신호의 출력단을 포함하는 신호처리부와; 영상신호의 입력단을 포함하는 디스플레이부와; 신호처리부의 출력단과 디스플레이부의 입력단 사이에 병렬적으로 연결되어, 출력단으로부터 입력단으로 영상신호를 전송할 수 있는 제1전송라인 및 제2전송라인과; 영상신호를 제1전송라인을 통해 전송하고, 영상신호의 전송 중 제1전송라인에 오류가 발생하면, 제2전송라인으로 전환하도록 제어하는 제어부를 포함하는 디스플레이장치에 의해 달성될 수 있다. According to another aspect of the present invention, there is provided a display apparatus comprising: a signal processing unit including an output terminal of a video signal; A display unit including an input terminal of a video signal; A first transmission line and a second transmission line connected in parallel between an output terminal of the signal processing unit and an input terminal of the display unit and capable of transmitting an image signal from an output terminal to an input terminal; And a control unit for controlling the switching to the second transmission line when a video signal is transmitted through the first transmission line and an error occurs in the first transmission line during transmission of the video signal.
이와 같은 본 발명의 실시예에 따라, 인터페이스를 이용하여 영상신호를 전송함에 있어, 사용중인 전송라인에 문제가 생기는 경우에도 안정적으로 데이터를 전송할 수 있다. 또한, 환경적인 요인에 상관 없이 시청되는 영상의 품질을 보장할 수 있다. According to the embodiment of the present invention, when transmitting a video signal using an interface, data can be stably transmitted even when a problem occurs in a transmission line in use. In addition, it is possible to guarantee the quality of an image to be viewed regardless of environmental factors.
상기 신호처리부의 출력단과 상기 제1전송라인 사이에 마련되는 병렬-직렬 변환부와; 상기 제1전송라인과 상기 디스플레이부의 입력단 사이에 마련되는 직렬-병렬 변환부를 더 포함할 수 다. 이에 따라, 복수의 채널을 통해 입력되는 영상신호를 적은 수의 전송라인을 통해 디스플레이로 출력함으로써 전송 효율을 향상시킬 수 있다. A parallel-to-serial conversion unit provided between an output terminal of the signal processing unit and the first transmission line; And a serial-parallel converter provided between the first transmission line and an input terminal of the display unit. Accordingly, the transmission efficiency can be improved by outputting a video signal input through a plurality of channels to a display through a small number of transmission lines.
상기 제어부는, 상기 영상신호의 데이터 인에이블(enable) 구간 동안 상기 제1전송라인에 대해 오류를 검출하고, 상기 영상신호의 데이터 디스에이블(disable) 구간 동안 상기 제2전송라인으로 전환할 수 있다. 이에 따라, 데이터 전송이 비활성화된 구간에서 전송라인을 변경하므로 끊김 없는 영상의 전송이 가능하다. The controller may detect an error with respect to the first transmission line during a data enable period of the video signal and may switch to the second transmission line during a data disable period of the video signal . Accordingly, since the transmission line is changed in the section in which the data transmission is inactivated, seamless image transmission is possible.
상기 제어부는, 상기 제1전송라인 및 상기 제2전송라인 각각에 대해 오류를 검출하고, 오류 발생횟수가 적은 전송라인으로 전환할 수 있다. 이에 따라, 가장 오류 발생이 적은 전송라인을 선택하여 안정적으로 영상신호를 전송할 수 있다. The control unit may detect an error in each of the first transmission line and the second transmission line and switch to a transmission line having a small number of error occurrences. Accordingly, it is possible to stably transmit the video signal by selecting the transmission line with the smallest error occurrence.
상기 제어부는, 정상적인 영상신호의 참조정보에 기초하여 상기 제1전송라인에 대한 오류를 검출할 수 있다. 이에 따라, 정상적인 영상신호의 참조값을 저장해두고, 전송되는 영상신호를 이와 비교하여 오류 여부를 판단할 수 있다. The control unit may detect an error with respect to the first transmission line based on reference information of a normal video signal. Accordingly, it is possible to store a reference value of a normal video signal, and compare the transmitted video signal with the reference video signal to judge whether or not an error has occurred.
상기 제어부와 상기 디스플레이부의 입력단 사이에 마련되고, 상기 제1전송라인 및 상기 제2전송라인 중 어느 하나를 통해서 전송되는 영상신호를 선택적으로 출력하는 멀티플렉서를 더 포함하고, 상기 제어부는, 상기 제1전송라인 및 상기 제2전송라인 중 어느 하나를 통해서 상기 영상신호를 선택적으로 출력하도록 제어신호를 상기 멀티플렉서로 전송할 수 있다. 이에 따라, 사용중인 전송라인에 오류 발생시 다른 전송라인으로 스위칭이 가능한 구조를 제공한다. Further comprising a multiplexer provided between the control unit and an input terminal of the display unit for selectively outputting a video signal transmitted through any one of the first transmission line and the second transmission line, A control signal may be transmitted to the multiplexer so as to selectively output the video signal through one of the transmission line and the second transmission line. Accordingly, it is possible to switch to another transmission line when an error occurs in the transmission line being used.
상기 제어부는, 상기 제1전송라인에 오류 발생시, 상기 제1전송라인을 통해 전송되는 영상신호의 전송설정값을 변경할 수 있다. 이에 따라, 전송라인에 대한 오류 검출 결과를 피드백하여 해당 전송라인에 대한 오류 발생 가능성을 줄일 수 있다. The control unit may change a transmission setting value of a video signal transmitted through the first transmission line when an error occurs in the first transmission line. Accordingly, the error detection result for the transmission line can be fed back to reduce the possibility of error in the transmission line.
상기 제어부는, 상기 제1전송라인 및 상기 제2전송라인 각각에 대한 영상신호의 전송설정값을 서로 다르게 설정할 수 있다. 이에 따라, 각 전송라인에 대해 서로 다른 설정을 적용하여 온도 및 채널 환경 등의 변화에도 효과적으로 대응할 수 있다. The control unit may set different transmission setting values of the video signals for the first transmission line and the second transmission line, respectively. Accordingly, it is possible to effectively cope with changes in temperature and channel environment by applying different settings to each transmission line.
상기 제어부는, 상기 제1전송라인 및 제2전송라인과 상기 디스플레이부의 입력단 사이에 마련될 수 있다. 이에 따라, 전송라인을 통해 전송되는 영상신호를 이용하여 전송라인에 대한 오류 검출이 가능하다. The control unit may be provided between the first transmission line and the second transmission line and an input end of the display unit. Accordingly, it is possible to detect an error in the transmission line by using the video signal transmitted through the transmission line.
상기 신호처리부의 출력단으로부터 상기 영상신호가 출력되는 제1채널 및 제2채널 각각에 대하여 상기 제1전송라인 및 상기 제2전송라인이 병렬적으로 마련되며, 상기 제어부는, 상기 제2채널이 유휴상태인 경우, 상기 제1채널에 대하여 상기 오류 처리 동작을 제어할 수 있다. 이에 따라, 영상신호가 출력되는 복수의 채널 중 활성화된 채널에 대해 오류 처리 동작을 수행하도록 한다. Wherein the first transmission line and the second transmission line are provided in parallel to the first channel and the second channel from which the video signal is output from the output terminal of the signal processing unit, State, the error processing operation can be controlled for the first channel. Accordingly, an error processing operation is performed on an activated channel among a plurality of channels through which a video signal is output.
상기 목적은, 본 발명에 따라, 디스플레이장치의 제어방법에 있어서, 신호처리부의 출력단에 의해, 영상신호를 출력하는 단계와; 제어부에 의해, 상기 신호처리부의 출력단과 디스플레이부의 입력단 사이에 병렬적으로 연결되는 제1전송라인 및 제2전송라인 중 제1전송라인을 통해 출력단으로부터 입력단으로 영상신호를 전송하는 단계와; 제어부에 의해, 영상신호의 전송 중 제1전송라인에 오류가 발생하면, 제2전송라인으로 전환하는 단계를 포함하는 디스플레이장치의 제어방법에 의해서도 달성될 수 있다. According to the present invention, there is provided a method of controlling a display device, comprising: outputting a video signal by an output terminal of a signal processing unit; Transmitting a video signal from an output terminal to an input terminal through a first transmission line of the first transmission line and a second transmission line connected in parallel between an output terminal of the signal processing unit and an input terminal of the display unit; And switching to a second transmission line when an error occurs in the first transmission line during transmission of the video signal by the control unit.
이와 같은 본 발명의 실시예에 따라, 인터페이스를 이용하여 영상신호를 전송함에 있어, 사용중인 전송라인에 문제가 생기는 경우에도 안정적으로 데이터를 전송할 수 있다. 또한, 환경적인 요인에 상관 없이 시청되는 영상의 품질을 보장할 수 있다.According to the embodiment of the present invention, when transmitting a video signal using an interface, data can be stably transmitted even when a problem occurs in a transmission line in use. In addition, it is possible to guarantee the quality of an image to be viewed regardless of environmental factors.
상기 신호처리부의 출력단으로부터 복수의 출력라인을 통해 출력되는 영상신호를 제1전송라인으로 출력되도록 병렬-직렬 변환하는 단계와; 상기 제1전송라인으로부터 입력되는 영상신호를 복수의 입력라인을 통해 상기 디스플레이부의 입력단으로 입력되도록 직렬-병렬 변환하는 단계를 더 포함할 수 있다. 이에 따라, 복수의 채널을 통해 입력되는 영상신호를 적은 수의 전송라인을 통해 디스플레이로 출력함으로써 전송 효율을 향상시킬 수 있다.Parallel-converting the video signal output through the plurality of output lines from the output terminal of the signal processing unit to output the video signal to the first transmission line; And converting the video signal inputted from the first transmission line to the input terminal of the display unit through a plurality of input lines. Accordingly, the transmission efficiency can be improved by outputting a video signal input through a plurality of channels to a display through a small number of transmission lines.
상기 영상신호의 데이터 인에이블(enable) 구간 동안 상기 제1전송라인에 대해 오류를 검출하는 단계와; 상기 영상신호의 데이터 디스에이블(disable) 구간 동안 상기 제2전송라인으로 전환하는 단계를 포함할 수 있다. 이에 따라, 데이터 전송이 비활성화된 구간에서 전송라인을 변경하므로 끊김 없는 영상의 전송이 가능하다.Detecting an error for the first transmission line during a data enable period of the video signal; And switching to the second transmission line during a data disable period of the video signal. Accordingly, since the transmission line is changed in the section in which the data transmission is inactivated, seamless image transmission is possible.
상기 제1전송라인 및 상기 제2전송라인 각각에 대해 오류를 검출하고, 오류 발생횟수가 적은 전송라인으로 전환하는 단계를 포함할 수 있다. 이에 따라, 가장 오류 발생이 적은 전송라인을 선택하여 안정적으로 영상신호를 전송할 수 있다.Detecting an error for each of the first transmission line and the second transmission line, and switching to a transmission line having a small number of error occurrences. Accordingly, it is possible to stably transmit the video signal by selecting the transmission line with the smallest error occurrence.
정상적인 영상신호의 참조정보에 기초하여 상기 제1전송라인에 대한 오류를 검출하는 단계를 더 포함할 수 있다. 이에 따라, 정상적인 영상신호의 참조값을 저장해두고, 전송되는 영상신호를 이와 비교하여 오류 여부를 판단할 수 있다.And detecting an error for the first transmission line based on the reference information of the normal video signal. Accordingly, it is possible to store a reference value of a normal video signal, and compare the transmitted video signal with the reference video signal to judge whether or not an error has occurred.
상기 제어부와 상기 디스플레이부의 입력단 사이에 마련되고, 상기 제1전송라인 및 상기 제2전송라인 중 어느 하나를 통해서 전송되는 영상신호를 선택적으로 출력하는 멀티플렉서를 더 포함하고, 상기 방법은, 상기 제1전송라인 및 상기 제2전송라인 중 어느 하나를 통해서 상기 영상신호를 선택적으로 출력하도록 제어신호를 상기 멀티플렉서로 전송하는 단계를 포함할 수 있다. 이에 따라, 사용중인 전송라인에 오류 발생시 다른 전송라인으로 스위칭이 가능한 구조를 제공한다.Further comprising a multiplexer provided between the control unit and an input terminal of the display unit for selectively outputting a video signal transmitted through any one of the first transmission line and the second transmission line, And transmitting the control signal to the multiplexer so as to selectively output the video signal through one of the transmission line and the second transmission line. Accordingly, it is possible to switch to another transmission line when an error occurs in the transmission line being used.
상기 제1전송라인에 오류 발생시, 상기 제1전송라인을 통해 전송되는 영상신호의 전송설정값을 변경하는 단계를 포함할 수 있다. 이에 따라, 전송라인에 대한 오류 검출 결과를 피드백하여 해당 전송라인에 대한 오류 발생 가능성을 줄일 수 있다.And changing a transmission setting value of a video signal transmitted through the first transmission line when an error occurs in the first transmission line. Accordingly, the error detection result for the transmission line can be fed back to reduce the possibility of error in the transmission line.
상기 제1전송라인 및 상기 제2전송라인 각각에 대한 영상신호의 전송설정값을 서로 다르게 설정하는 단계를 포함할 수 있다. 이에 따라, 각 전송라인에 대해 서로 다른 설정을 적용하여 온도 및 채널 환경 등의 변화에도 효과적으로 대응할 수 있다.And setting different transmission setting values of the video signals for the first transmission line and the second transmission line, respectively. Accordingly, it is possible to effectively cope with changes in temperature and channel environment by applying different settings to each transmission line.
상기 제어부는, 상기 제1전송라인 및 제2전송라인과 상기 디스플레이부의 입력단 사이에 마련될 수 있다. 이에 따라, 전송라인을 통해 전송되는 영상신호를 이용하여 전송라인에 대한 오류 검출이 가능하다.The control unit may be provided between the first transmission line and the second transmission line and an input end of the display unit. Accordingly, it is possible to detect an error in the transmission line by using the video signal transmitted through the transmission line.
상기 신호처리부의 출력단으로부터 상기 영상신호가 출력되는 제1채널 및 제2채널 각각에 대하여 상기 제1전송라인 및 상기 제2전송라인이 병렬적으로 마련되며, 상기 제2채널이 유휴상태인 경우, 상기 제1채널에 대하여 상기 오류 처리 동작을 제어하는 단계를 포함할 수 있다. 이에 따라, 영상신호가 출력되는 복수의 채널 중 활성화된 채널에 대해 오류 처리 동작을 수행하도록 한다.Wherein the first transmission line and the second transmission line are provided in parallel to the first channel and the second channel from which the video signal is output from the output terminal of the signal processing unit, And controlling the error processing operation for the first channel. Accordingly, an error processing operation is performed on an activated channel among a plurality of channels through which a video signal is output.
상기한 바와 같이, 본 발명에 의하면, 인터페이스를 이용하여 영상신호를 전송함에 있어, 사용중인 전송라인에 문제가 생기는 경우에도 안정적으로 데이터를 전송할 수 있는 효과가 있다. As described above, according to the present invention, when transmitting a video signal using an interface, data can be stably transmitted even when a problem occurs in a transmission line in use.
또한, 본 발명에 의하면, 환경적인 요인에 상관 없이 시청되는 영상의 품질을 보장할 수 있다. In addition, according to the present invention, it is possible to guarantee the quality of a visual image regardless of environmental factors.
도 1은 본 발명의 일실시예에 따른 디스플레이장치의 구성을 도시한 블록도이다.1 is a block diagram showing the configuration of a display device according to an embodiment of the present invention.
도 2는 본 발명의 일실시예에 따른 인터페이스의 구성을 도시한 예이다. 2 is a diagram illustrating an example of the configuration of an interface according to an embodiment of the present invention.
도 3은 본 발명의 일실시예에 따른 인터페이스의 구성을 도시한 예이다. 3 is an illustration showing an example of the configuration of an interface according to an embodiment of the present invention.
도 4는 본 발명의 일실시예에 따른 구간별 오류 처리 동작을 도시한 예이다. FIG. 4 illustrates an example of an error processing operation according to an embodiment of the present invention.
도 5는 본 발명의 일실시예에 따른 동작모드의 흐름을 도시한 예이다. 5 is an example of a flow of an operation mode according to an embodiment of the present invention.
도 6은 본 발명의 일실시예에 따른 오류 검출 알고리즘을 도시한 예이다. 6 is an example of an error detection algorithm according to an embodiment of the present invention.
도 7은 본 발명의 일실시예에 따른 오류 검출 결과를 피드백하여 신호 전송을 위한 설정값을 변경하기 위한 구성을 도시한 예이다. 7 is an example of a configuration for changing a set value for signal transmission by feeding back an error detection result according to an embodiment of the present invention.
도 8은 본 발명의 일실시예에 따른 전송라인별로 신호 전송을 위한 서로 다른 설정값을 적용하기 위한 구성을 도시한 예이다. FIG. 8 illustrates an exemplary configuration for applying different set values for signal transmission on a transmission line according to an exemplary embodiment of the present invention. Referring to FIG.
도 9는 본 발명의 일실시예에 따른 복수의 채널이 모두 활성화된 경우 영상신호를 전송하기 위한 구성을 도시한 예이다.9 is a diagram illustrating a configuration for transmitting an image signal when a plurality of channels are activated according to an exemplary embodiment of the present invention.
도 10은 본 발명의 일실시예에 따른 복수의 채널 중 활성화된 채널로부터 출력되는 영상신호를 전송하기 위한 구성을 도시한 예이다. 10 is a diagram illustrating a configuration for transmitting an image signal output from an active channel among a plurality of channels according to an exemplary embodiment of the present invention.
도 11은 본 발명의 일실시예에 따른 복수의 채널 중 활성화된 채널로부터 출력되는 영상신호를 전송하기 위한 구성을 도시한 예이다. 11 is a diagram illustrating a configuration for transmitting an image signal output from an active channel among a plurality of channels according to an exemplary embodiment of the present invention.
도 12는 본 발명의 일실시예에 따른 디스플레이장치의 제어방법을 도시한 흐름도이다.12 is a flowchart illustrating a method of controlling a display device according to an embodiment of the present invention.
이하, 첨부도면을 참조하여 본 발명의 실시예들에 대하여 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 상세히 설명한다. 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며 여기에서 설명하는 실시예들에 한정되지 않는다. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.
이하에서는, 먼저 도 1 내지 도 3을 통해 본 발명의 디스플레이장치(10)의 구성에 대해 설명하기로 한다. Hereinafter, the configuration of the display device 10 of the present invention will be described with reference to Figs. 1 to 3. Fig.
도 1은 본 발명의 일실시예에 따른 디스플레이장치의 구성을 도시한 블록도이다. 도 1에 도시된 바와 같이, 본 발명의 디스플레이장치(10)는 신호수신부(11), 신호처리부(12), 인터페이스(13), 디스플레이부(14), 제어부(15), 입력수신부(16) 및 저장부(17)를 포함하고, 인터페이스(13)는 에러처리부(135)의 구성을 포함한다. 디스플레이장치(10)는 예컨대, TV, 스마트폰, 태블릿 및 PC 등으로 구현될 수 있다. 디스플레이장치(10)에 포함되는 구성은 본 발명의 일실시예에 의해 한정되지 않고, 일부 구성을 제외하여 구성되거나, 추가적인 다른 구성들을 포함하여 구현될 수 있다.1 is a block diagram showing the configuration of a display device according to an embodiment of the present invention. 1, the display device 10 of the present invention includes a signal receiving unit 11, a signal processing unit 12, an interface 13, a display unit 14, a control unit 15, an input receiving unit 16, And a storage unit 17, and the interface 13 includes the configuration of the error processing unit 135. [ The display device 10 may be implemented, for example, as a TV, a smart phone, a tablet, and a PC. The configuration included in the display device 10 is not limited to the embodiment of the present invention, but may be configured excluding some configurations, or may be implemented including additional other configurations.
본 발명의 디스플레이장치(10)는 상기와 같은 구성을 이용하여, 영상신호를 하나 혹은 적은 수의 전송라인을 통해 디스플레이부(14)로 전송할 수 있다. The display device 10 of the present invention can transmit a video signal to the display unit 14 through one or a small number of transmission lines using the above configuration.
신호수신부(11)는 방송신호 또는 영상신호를 수신한다. 영상신호는 예컨대, 비디오 또는 그래픽 신호를 포함할 수 있다. 신호수신부(11)는 수신하는 방송신호 및 영상신호의 규격 및 디스플레이장치(10)의 구현 형태에 따라 다양한 형식으로 마련될 수 있다. 예를 들어, 신호수신부(11)는 방송국으로부터 송출되는 RF(Radio Frequency) 방송신호나 위성신호를 수신하는 튜너로 구현될 수 있다. 다른 예로서, 신호수신부(11)는 DVD 플레이어, 게임기, PC 등의 HDMI(High Definition Multimedia Interface) 장치로부터 영상신호를 수신할 수 있다. The signal receiving unit 11 receives a broadcast signal or a video signal. The video signal may comprise, for example, a video or graphics signal. The signal receiving unit 11 may be provided in various formats according to the specifications of the received broadcast signal and the video signal and the implementation form of the display device 10. For example, the signal receiving unit 11 may be implemented as a tuner that receives an RF (Radio Frequency) broadcast signal or a satellite signal transmitted from a broadcasting station. As another example, the signal receiving unit 11 can receive a video signal from a High Definition Multimedia Interface (HDMI) device such as a DVD player, a game machine, or a PC.
신호처리부(12)는 신호수신부(11)에서 수신된 방송신호 또는 영상신호에 대해 기 설정된 신호처리 프로세스를 수행한다. 신호처리부(12)에서 수행하는 신호처리의 예로서, 디멀티플렉싱(demultiplexing), 디코딩(decoding), 디인터레이싱 (de-interlacing), 스케일링(scaling), 노이즈 감소(noise reduction), 디테일 인핸스먼트(detail enhancement) 등이 있으며, 그 종류는 한정되지 않는다. 신호처리부(12)는 이러한 여러 기능을 통합시킨 SOC(System-On-Chip) 또는 각 프로세스를 독자적으로 수행할 수 있는 개별 구성들이 장착된 영상처리보드로 구현될 수 있다.The signal processing unit 12 performs a predetermined signal processing process on the broadcast signal or the video signal received by the signal receiving unit 11. [ Examples of the signal processing performed by the signal processing unit 12 include demultiplexing, decoding, de-interlacing, scaling, noise reduction, detail enhancement, ), And the kind thereof is not limited. The signal processing unit 12 may be implemented as a system-on-chip (SOC) that integrates various functions or an image processing board equipped with individual components capable of independently performing each process.
본 발명의 실시예에 의하면, 신호처리부(12)는 인터페이스를 통해 영상신호를 전송하기 위한 추가 구성을 더 포함한다. 즉, 신호처리부(12)는 영상신호를 전송에 적합한 형태로 변환시키기 위해 예컨대, 프레임 컨트롤러(Frame Controller), RGB 데이터 인코더/디코더(encoder/decoder), 스크램블러(Scrambler) 및 8b/10b 인코더/디코더 등의 구성을 포함한다. According to the embodiment of the present invention, the signal processing unit 12 further includes an additional configuration for transmitting the video signal through the interface. That is, the signal processing unit 12 includes a frame controller, an RGB data encoder / decoder, a scrambler, and an 8b / 10b encoder / decoder for converting a video signal into a form suitable for transmission And the like.
인터페이스(13)는 신호처리부(12)에서 출력된 영상신호를 하나 이상의 전송라인을 통해 디스플레이부(14)로 전송한다. 예로서, 도2에 도시된 바와 같이, 인터페이스(13)는 영상신호를 전송하기 위한 구성으로서, 병렬-직렬 변환부(22), 제1전송라인(131) 및 제2전송라인(132), 에러처리부(135) 및 직렬-병렬 변환부(25)를 포함하고, 추가적인 다른 구성을 더 포함할 수 있다. The interface 13 transmits the video signal output from the signal processing unit 12 to the display unit 14 through one or more transmission lines. 2, the interface 13 includes a parallel-to-serial converter 22, a first transmission line 131 and a second transmission line 132, An error processing unit 135 and a serial-to-parallel conversion unit 25, and may further include other additional configurations.
인터페이스(13)의 구성 중 에러처리부(135)는 신호처리부(12)에서 출력되는 영상신호를 제1전송라인(131)을 통해 전송하는 동안 제1전송라인(131)에 발생하는 오류(error)를 검출한다. 이 때, 에러처리부(135)는 제1전송라인(131)에 오류 발생시 제1전송라인(131) 대신 제2전송라인(132)을 통해 영상신호를 전송할 수 있도록 스위칭한다. The error processing unit 135 of the interface 13 receives an error generated in the first transmission line 131 while the video signal outputted from the signal processing unit 12 is transmitted through the first transmission line 131, . At this time, the error processing unit 135 switches the first transmission line 131 to transmit the video signal through the second transmission line 132 instead of the first transmission line 131 when the error occurs.
디스플레이부(14)는 신호처리부(12)로부터 출력된 방송신호 또는 영상신호를 인터페이스(13)를 통해 수신하고, 수신된 영상신호에 기초하여 영상을 표시한다. 디스플레이부(14)의 구현 방식은 한정되지 않는 바, 디스플레이부(14)는 PDP(Plasma Display Panel), LCD(Liquid Crystal Display), OLED(Organic Light Emitting Diodes), 플렉시블 디스플레이(flexible display) 등 다양한 형태로 구현될 수 있다. The display unit 14 receives the broadcast signal or video signal output from the signal processing unit 12 through the interface 13 and displays the video based on the received video signal. The display unit 14 may be implemented in various forms such as a PDP (Plasma Display Panel), an LCD (Liquid Crystal Display), an OLED (Organic Light Emitting Diodes), a flexible display, . ≪ / RTI >
입력수신부(16)는 디스플레이장치(10)의 적어도 하나의 기능을 제어하기 위한 사용자입력을 수신한다. 예로서, 입력수신부(16)는 디스플레이부(14)에 표시되는 사용자 인터페이스(User Interface)의 일부를 선택하기 위한 사용자입력을 수신할 수 있다. 입력수신부(16)는 디스플레이장치(10)의 외측에 구비된 입력패널의 형태로 구현되거나 디스플레이장치(10)와 적외선 방식으로 통신하는 리모트 컨트롤러로 구현될 수 있다. 또한, 입력수신부(16)는 디스플레이장치(10)와 연결되는 키보드, 마우스 등으로 구현될 수 있고, 디스플레이장치(10)에 마련되는 터치스크린으로 구현될 수도 있다. The input receiving unit 16 receives a user input for controlling at least one function of the display device 10. [ For example, the input receiving unit 16 may receive a user input for selecting a part of a user interface displayed on the display unit 14. [ The input receiving unit 16 may be implemented as an input panel provided outside the display device 10 or a remote controller communicating with the display device 10 in an infrared manner. The input receiving unit 16 may be implemented as a keyboard, a mouse, or the like connected to the display device 10, or may be implemented as a touch screen provided in the display device 10.
저장부(17)는 신호수신부(11)에서 수신된 방송신호 또는 영상신호를 저장한다. 저장부(17)는 저장된 방송신호 또는 영상신호의 데이터 각각에 대해 독취(read), 기록(write), 수정(edit), 삭제(delete), 갱신(update)등이 수행되도록 한다. 저장부(17)는 디스플레이장치(10)의 시스템 전원의 제공 유무와 무관하게 데이터를 보존할 수 있도록 플래시메모리(flash-memory), 하드디스크 드라이브(hard-disc drive)와 같은 비휘발성 메모리로 구현된다.The storage unit 17 stores the broadcasting signal or the video signal received by the signal receiving unit 11. [ The storage unit 17 reads, writes, edits, deletes, and updates data of the stored broadcast signals or video signals. The storage unit 17 may be implemented as a nonvolatile memory such as a flash memory or a hard disk drive so as to store data regardless of whether the system power of the display device 10 is provided or not. do.
메인제어부(15)는 디스플레이장치(10)가 수행 가능한 복수의 기능을 제어하기 위한 제어 프로세스를 수행한다. 메인제어부(15)는 CPU(Central Processing Unit)로 구현될 수 있고, 제어, 연산, 레지스터의 세 영역을 포함한다. 제어영역은 프로그램 명령어를 해석하고, 해석된 명령의 의미에 따라 디스플레이장치(10)의 각 구성으로 동작을 지시한다. 연산영역은 산술 연산 및 논리 연산을 수행하고, 제어영역의 지시에 따라 디스플레이장치(10)의 각 구성이 동작하기 위해 필요한 연산을 수행한다. 레지스터는 CPU에서 명령어를 실행하는 동안 필요한 정보들을 저장하는 기억 장소로, 디스플레이장치(10)의 각 구성에 대한 명령어 및 데이터들을 저장하고, 연산된 결과를 저장한다. The main control unit 15 performs a control process for controlling a plurality of functions that the display apparatus 10 can perform. The main control unit 15 can be realized by a CPU (Central Processing Unit) and includes three areas of control, calculation, and register. The control area interprets program instructions and directs the operation of each configuration of the display device 10 according to the meaning of the interpreted instruction. The arithmetic operation area performs an arithmetic operation and a logical operation, and performs operations necessary for each configuration of the display device 10 to operate according to an instruction of the control area. The register is a storage area for storing necessary information while executing an instruction in the CPU, stores instructions and data for each configuration of the display device 10, and stores the calculated result.
도 2는 본 발명의 일실시예에 따른 인터페이스의 구성을 도시한 예이다. 도 2에 도시된 바와 같이, 본 발명의 디스플레이장치(10)는 인터페이스(13)의 구성을 이용하여, 신호처리부(12)에서 출력되는 영상신호를 디스플레이부(14)로 전송한다. 2 is a diagram illustrating an example of the configuration of an interface according to an embodiment of the present invention. 2, the display device 10 of the present invention transmits the video signal output from the signal processing unit 12 to the display unit 14 by using the configuration of the interface 13.
인터페이스(13)는 영상신호를 전송하기 위한 세부 구성으로서, 병렬-직렬(parallel to serial) 변환부(22), 제1전송라인(131) 및 제2전송라인(132), 에러처리부(135) 및 직렬-병렬(serial to parallel) 변환부(25)를 포함한다. 제1전송라인(131) 및 제2전송라인(132) 중 적어도 하나는 하나 이상의 서브전송라인을 포함할 수 있다. The interface 13 is a detailed configuration for transmitting a video signal and includes a parallel-to-serial converter 22, a first transmission line 131 and a second transmission line 132, an error processing unit 135, And a serial-to-parallel converter 25. At least one of the first transmission line 131 and the second transmission line 132 may include one or more sub transmission lines.
여기서, 에러처리부(135)는 전송라인에 대한 오류 검출 및 전송라인을 선택하는 동작을 제어하는 에러제어부(136)와, 선택된 전송라인을 통해 전송되는 신호를 출력하도록 동작하는 멀티플렉서(Multiplexer) (233)의 구성을 포함한다. 여기서, 에러제어부(136)와 멀티플렉서(233)는 제1전송라인(131) 및 제2전송라인(132)과 디스플레이부(14)의 입력단 사이에 마련되어, 제1전송라인(131) 및 제2전송라인(132)에 발생되는 오류의 검출 및 그에 따른 제어동작을 수행한다.The error processing unit 135 includes an error control unit 136 for controlling error detection and transmission line selection for the transmission line and a multiplexer 233 for outputting a signal transmitted through the selected transmission line. ). Here, the error control unit 136 and the multiplexer 233 are provided between the first transmission line 131 and the second transmission line 132 and the input end of the display unit 14 so that the first transmission line 131 and the second transmission line 131, And detects the error generated in the transmission line 132 and performs a control operation accordingly.
일실시예로서, 신호처리부(12)의 출력단에서 복수의 출력라인을 통해 출력되는 영상신호는 병렬-직렬 변환부(22)를 거쳐 제1전송라인(131) 및 제2전송라인을 통해 전송된다. 또한, 제1전송라인(131) 및 제2전송라인(132) 각각을 통해 전송되는 영상신호는 에러제어부(136)의 제어동작에 의해 멀티플렉서(233)를 거쳐 둘 중 하나의 영상신호만이 출력된다. 이 때, 출력되는 영상신호는 다시 원래의 신호로 복원하기 위해 직렬-병렬 변환부(25)를 거쳐 복수의 입력라인을 통해 디스플레이부(14)의 입력단으로 입력된다. In one embodiment, a video signal output through a plurality of output lines at the output terminal of the signal processing unit 12 is transmitted through the first transmission line 131 and the second transmission line via the parallel-to-serial conversion unit 22 . The video signal transmitted through each of the first transmission line 131 and the second transmission line 132 is controlled by the error control unit 136 so that only one of the two video signals is output through the multiplexer 233 do. At this time, the output video signal is input to the input terminal of the display unit 14 through the plurality of input lines through the serial-parallel conversion unit 25 to restore the original video signal.
에러제어부(136)는 제1전송라인(131)을 통해 영상신호를 전송하는 동안, 제1전송라인(131)에 대해 오류를 검출한다. The error control unit 136 detects an error with respect to the first transmission line 131 while transmitting the video signal through the first transmission line 131.
또한, 에러제어부(136)는 제1전송라인(131) 및 제2전송라인(132) 각각을 통해 영상신호를 동일하게 전송하고, 전송하는 동안 제1전송라인(131) 및 제2전송라인(132) 각각에 대해 오류를 검출할 수도 있다.The error control unit 136 also transmits the video signals through the first transmission line 131 and the second transmission line 132 in the same manner and transmits the first transmission line 131 and the second transmission line 132 132, respectively.
이 때, 에러제어부(136)는 제1전송라인(131)에 오류가 발생한 것으로 판단되면, 제1전송라인(131)을 사용하지 않고, 제2전송라인(132)으로 전환하여 제2전송라인(132)을 통해 전송되는 영상신호를 출력하도록 한다. At this time, if it is determined that an error has occurred in the first transmission line 131, the error control unit 136 switches to the second transmission line 132 without using the first transmission line 131, And outputs a video signal transmitted through the video signal processor 132.
여기서, 에러제어부(136)는 오류 검출 결과에 기초한 제어신호를 멀티플렉서(233)로 전송한다. 에러제어부(136)는, 만일 제1전송라인(131)에 오류가 발생한 경우, 제2전송라인(132)으로 전환하도록 하는 제어신호로서 에러 플래그(ERR FLAG)를 '1'로 출력하여 멀티플렉서(233)로 전송한다. 이 때, 멀티플렉서(233)는 에러제어부(136)로부터 전송된 제어신호를 참조하여 제2전송라인(132)을 통해 전송되는 영상신호를 출력한다.  Here, the error control unit 136 transmits a control signal based on the error detection result to the multiplexer 233. [ The error control unit 136 outputs an error flag ERR FLAG as a control signal for switching to the second transmission line 132 when the error occurs in the first transmission line 131 as '1' 233. At this time, the multiplexer 233 outputs a video signal transmitted through the second transmission line 132 with reference to the control signal transmitted from the error control unit 136.
반면, 에러제어부(136)는 제1전송라인(131)에 오류가 발생하지 않은 경우, 제1전송라인(131)을 유지하도록 하는 제어신호로서 에러 플래그(ERR FLAG)를 '0'으로 출력하여 멀티플렉서(233)로 전송한다. 이에 따라, 멀티플렉서(233)는 전송된 제어신호을 참조하여 전송라인의 전환 없이 제1전송라인(131)을 통해 전송되는 영상신호를 출력한다. On the other hand, if an error does not occur in the first transmission line 131, the error control unit 136 outputs the error flag ERR FLAG as '0' as a control signal for holding the first transmission line 131 To the multiplexer 233. Accordingly, the multiplexer 233 refers to the transmitted control signal and outputs a video signal transmitted through the first transmission line 131 without switching the transmission line.
상기와 같은 본 발명의 실시예에 따라, 인터페이스를 이용하여 영상신호를 전송함에 있어, 사용중인 일부 전송라인에 문제가 발생하는 경우 나머지 전송라인을 사용하여 안정적으로 신호를 전송할 수 있다. According to the embodiment of the present invention, when a video signal is transmitted using an interface, if a problem occurs in some transmission lines in use, signals can be stably transmitted using the remaining transmission lines.
도 3은 본 발명의 일실시예에 따른 인터페이스의 구성을 도시한 예이다. 도 3에 도시된 바와 같이, 본 발명의 디스플레이장치(10)는 인터페이스(13)의 구성을 이용하여, 신호처리부(12)에서 출력되는 영상신호를 디스플레이부(14)로 전송한다. 3 is an illustration showing an example of the configuration of an interface according to an embodiment of the present invention. 3, the display apparatus 10 of the present invention transmits the video signal output from the signal processing unit 12 to the display unit 14 by using the configuration of the interface 13.
인터페이스(13)는 영상신호를 전송하기 위한 세부 구성으로서, 도 2와 동일한 구성을 포함하고, 그 외에 추가적인 구성을 더 포함한다. 즉, 인터페이스(13)는 병렬-직렬 변환부(22), 제1전송라인(131) 및 제2전송라인(132), 에러처리부(135) 및 직렬-병렬 변환부(25)를 포함하고, 그 이외에 추가적인 구성으로서 제1먹스(231) 및 제2먹스(232)와, FIFO(24)를 더 포함한다. The interface 13 is a detailed configuration for transmitting a video signal, and includes the same configuration as that of FIG. 2, and further includes an additional configuration. That is, the interface 13 includes the parallel-to-serial conversion section 22, the first transmission line 131 and the second transmission line 132, the error processing section 135 and the serial-to-parallel conversion section 25, And further includes a first mux 231, a second mux 232, and a FIFO 24 as additional configurations.
여기서, 도2와 동일한 구성에 대해서는 앞서 설명하였으므로 구체적인 설명을 생략하고, 추가적인 구성에 대해서만 설명하기로 한다. Here, the same components as those of FIG. 2 have been described above, so a detailed description will be omitted and only additional configurations will be described.
제1먹스(231) 및 제2먹스(232)는 신호처리부(12)의 출력단으로부터 출력되는 제1채널(도 9의 부호 91 참조) 및 제2채널(도 9의 부호 92 참조) 중 어느 하나의 영상신호를 제1전송라인(131) 및 제2전송라인(132) 각각으로 선택적으로 출력한다. The first and second muxes 231 and 232 may be any one of a first channel (see 91 in FIG. 9) and a second channel (see 92 in FIG. 9) output from the output of the signal processor 12 To the first transmission line 131 and the second transmission line 132, respectively.
즉, 제1먹스(231) 및 제2먹스(232)의 구성을 이용하여, 제1채널(91) 및 제2채널(92)의 활성화 여부에 따라, 제1전송라인(131) 및 제2전송라인(132)으로의 출력을 제어할 수 있다. That is, by using the configurations of the first and second muxes 231 and 232, depending on whether the first channel 91 and the second channel 92 are activated, the first transmission line 131 and the second transmission line 131 And to control the output to the transmission line 132.
예로서, 전송라인 당 12.5GHz를 지원하는 인터페이스 칩을 사용하는 경우, UHD 4K 모니터에 대해 120Hz의 주파수로 영상을 출력하기 위해, 제1채널(91) 및 제2채널(92)를 모두 활성화하여 제1전송라인(131) 및 제2전송라인(132)을 통해 영상신호를 전송할 수 있다.For example, if an interface chip supporting 12.5 GHz per transmission line is used, both the first channel 91 and the second channel 92 are activated to output an image at a frequency of 120 Hz to the UHD 4K monitor And may transmit the image signal through the first transmission line 131 and the second transmission line 132.
다른 예로서, UHD 4K 모니터에 대해 60Hz의 주파수로 영상을 출력하는 경우, 제1채널(91)만을 활성화하여 두 개의 전송라인 중에 제1전송라인(131)을 통해 영상신호를 전송할 수 있다.As another example, when an image is output at a frequency of 60 Hz for the UHD 4K monitor, only the first channel 91 may be activated to transmit the image signal through the first transmission line 131 among the two transmission lines.
도시된 예에서, 두 채널 중 제1채널(91)이 활성화된 경우, 에러제어부(136)는 제1전송라인(131)을 통해 영상신호를 전송하고, 전송 중 제1전송라인(131)에 대한 오류를 검출한다.In the illustrated example, when the first channel 91 of the two channels is activated, the error control unit 136 transmits the image signal through the first transmission line 131 and transmits the image signal to the first transmission line 131 To detect an error.
이 경우, 에러제어부(136)는 제1채널(91)이 활성화된 상태에서 제1전송라인(131) 및 제2전송라인(132) 각각을 통해 영상신호를 동일하게 전송하고, 전송하는 동안 제1전송라인(131) 및 제2전송라인(132) 각각에 대해 오류를 검출할 수도 있다.In this case, the error control unit 136 equally transmits the video signal through the first transmission line 131 and the second transmission line 132 in the state in which the first channel 91 is active, 1 transmission line 131 and the second transmission line 132, respectively.
상기와 같은 오류 검출 과정에서, 제1전송라인(131)에서 오류 발생시, 제2전송라인(132)으로 전환하여, 제2전송라인(132)을 통해 전송되는 영상신호의 데이터를 사용하도록 한다. In the error detection process, when an error occurs in the first transmission line 131, the second transmission line 132 is switched to use the data of the video signal transmitted through the second transmission line 132.
여기서, 제1전송라인(131) 및 제2전송라인(132) 중 적어도 하나는 하나 이상의 서브전송라인을 포함할 수 있다. 또한, 제1전송라인(131) 및 제2전송라인(132) 이외에 추가적인 전송라인이 더 마련될 수 있다. 이와 같이, 본 발명의 디스플레이장치(10)에 구현되는 전송라인의 개수는 도시된 예에 한정되지 않고, 모니터의 규격 및 전송 주파수 등에 따라 다양하게 마련될 수 있다. Here, at least one of the first transmission line 131 and the second transmission line 132 may include one or more sub transmission lines. In addition, additional transmission lines may be provided in addition to the first transmission line 131 and the second transmission line 132. As described above, the number of transmission lines implemented in the display device 10 of the present invention is not limited to the illustrated example, and may be variously set according to monitor specifications, transmission frequency, and the like.
FIFO(first in first out)(24)는 에러제어부(136)와 멀티플렉서(233) 사이에 마련되고, 제1전송라인(131) 및 제2전송라인(132)을 통해 전송되는 영상신호를 임시 저장하기 위한 구성으로, 예컨대 버퍼(buffer)로 구현된다. A first in first out (FIFO) 24 is provided between the error control unit 136 and the multiplexer 233 and temporarily stores the video signal transmitted through the first transmission line 131 and the second transmission line 132 For example, a buffer.
일실시예로서, 제1전송라인(131)에서의 오류 발생에 따라 제2전송라인(132)으로 전환하는 경우, 전환에 따른 과도기적 오류가 발생할 수 있다. 이 때, FIFO(24)는 제1전송라인(131)을 통해 전송되는 영상신호를 저장하고 있는 상태이므로, 제2전송라인(132)으로의 전환에 따른 오류 발생시 저장된 영상신호를 이용할 수 있다. As an example, when switching to the second transmission line 132 in response to an error in the first transmission line 131, a transitional error due to the switching may occur. At this time, since the FIFO 24 is storing the video signal transmitted through the first transmission line 131, the stored video signal can be used when an error occurs due to the switching to the second transmission line 132.
이와 같이, FIFO(24)의 구성을 이용하여 전송라인의 전환 시 오류가 발생하는 경우에도 시청되는 화면의 품질을 보장할 수 있다.In this way, even when an error occurs in switching the transmission line by using the configuration of the FIFO 24, it is possible to guarantee the quality of the screen to be viewed.
한편, 인터페이스(13)와 디스플레이부(14) 사이에는 제1전송라인(131) 또는 제2전송라인(132)을 통해 전송되는 영상신호에 기초한 구동신호를 디스플레이부(14)에 출력하도록 추가적인 처리를 수행하는 회로인 패널처리부(31)의 구성을 더 포함한다. On the other hand, in order to output a driving signal based on the video signal transmitted through the first transmission line 131 or the second transmission line 132 to the display unit 14 between the interface 13 and the display unit 14, And a panel processing unit 31 that is a circuit that performs the processing of the panel processing.
도 4는 본 발명의 일실시예에 따른 구간별 오류 처리 동작을 도시한 예이다. 도 4에 도시된 바와 같이, 본 발명의 디스플레이장치(10)는 인터페이스(13)를 통해 영상신호를 전송함에 있어, 시간 구간별로 서로 다른 동작을 수행한다.  FIG. 4 illustrates an example of an error processing operation according to an embodiment of the present invention. As shown in FIG. 4, the display device 10 of the present invention performs different operations for each time interval in transmitting an image signal through the interface 13.
도 2 및 도 3에서 설명한 바와 같이, 에러제어부(136)는 제1전송라인(131)을 통해 영상신호를 전송 중 제1전송라인에 대한 오류를 검출하고, 검출 결과에 따라 전송라인을 선택한다. 2 and 3, the error controller 136 detects an error with respect to the first transmission line during transmission of the video signal through the first transmission line 131, and selects the transmission line according to the detection result .
도시된 예에서, 에러제어부(136)는 데이터 전송이 활성화되는 데이터 인에이블 구간(45) 동안, 제1전송라인(131)에 대해 오류를 검출하는 동작(S40)을 수행한다. 또한, 에러제어부(136)는 데이터 전송이 비활성화되는 데이터 디스에이블 구간(46) 동안, 오류 검출 결과에 기초하여 제1전송라인(131) 및 제2전송라인(132) 중 어느 하나를 선택하는 동작(S41)을 수행한다. In the illustrated example, the error control unit 136 performs an operation (S40) for detecting an error with respect to the first transmission line 131 during the data enable period 45 during which data transmission is activated. The error control unit 136 may also select one of the first transmission line 131 and the second transmission line 132 based on the error detection result during the data disable period 46 during which the data transmission is inactivated (S41).
예로서, 에러제어부(136)는 오류 검출 결과 제1전송라인(131)에 오류가 발생한 경우, 제2전송라인(132)으로 전환하여 제2전송라인(132)을 통해 전송되는 영상신호를 출력하도록 한다. 또한, 에러제어부(136)는 오류 검출 결과 제1전송라인(132)에 오류가 발생하지 않은 경우, 제1전송라인(131)을 그대로 유지하여 영상신호를 전송하도록 한다. For example, when an error is detected in the first transmission line 131 as a result of error detection, the error control unit 136 outputs a video signal, which is transmitted through the second transmission line 132 by switching to the second transmission line 132 . If no error occurs in the first transmission line 132 as a result of the error detection, the error control unit 136 maintains the first transmission line 131 as it is and transmits the video signal.
상기와 같이 본 발명의 실시예에 따라, 데이터 전송이 비활성화된 구간에서 전송라인을 변경하므로 끊김 없는 영상의 전송이 가능하다. As described above, according to the embodiment of the present invention, since the transmission line is changed in the section in which the data transmission is inactivated, it is possible to transmit the seamless image.
여기서, 데이터 인에이블 구간(45) 및 데이터 디스에이블 구간(46)은 소정 주기를 가지고 교대로 반복된다. 즉, 에러제어부(136)는 오류 검출 동작(S40) 및 전송라인 선택 동작(S41)을 교대로 반복하여 구간별로 가장 높은 전송 효율을 가지는 전송라인을 통해 영상신호를 전송할 수 있다. Here, the data enable period 45 and the data disable period 46 are alternately repeated with a predetermined period. That is, the error control unit 136 may alternately repeat the error detection operation S40 and the transmission line selection operation S41 to transmit the video signal through the transmission line having the highest transmission efficiency in each section.
일실시예로서, 에러제어부(136)는 데이터 인에이블 구간(45) 동안, 제1전송라인(131) 및 제2전송라인(132) 각각에 대해 오류를 검출하는 동작(S40)을 수행할 수 있다. 예로서, 데이터 인에이블 구간(45) 동안, 제1전송라인(131) 및 제2전송라인(132) 각각에 대해 오류 발생횟수를 검출할 수 있다. The error control 136 may perform an operation S40 of detecting an error for each of the first transmission line 131 and the second transmission line 132 during the data enable period 45 have. For example, during the data enable period 45, the number of errors occurring for each of the first transmission line 131 and the second transmission line 132 may be detected.
이 경우, 에러제어부(136)는 데이터 디스에이블 구간(46) 동안, 제1전송라인(131) 및 제2전송라인(132) 각각에 대한 오류 발생횟수를 비교하여, 더 적은 오류횟수를 가지는 전송라인을 선택하도록 한다. 이에 따라, 가장 오류 발생이 적은 전송라인을 선택하여 안정적으로 영상신호를 전송할 수 있다. In this case, the error control unit 136 compares the number of times of occurrence of errors with respect to each of the first transmission line 131 and the second transmission line 132 during the data disable period 46, Select the line. Accordingly, it is possible to stably transmit the video signal by selecting the transmission line with the smallest error occurrence.
도 5는 본 발명의 일실시예에 따른 동작모드의 흐름을 도시한 예이다. 도 5에 도시된 바와 같이, 본 발명의 디스플레이장치(10)는 인터페이스(13)를 통해 영상신호를 전송함에 있어, 아래와 같은 동작모드 상태로 전환하여 해당 동작을 수행한다. 5 is an example of a flow of an operation mode according to an embodiment of the present invention. As shown in FIG. 5, the display device 10 of the present invention switches an operation mode to the following operation mode when transmitting an image signal through the interface 13.
먼저, 동작 S50에서, 에러제어부(136)는 데이터 전송이 활성화되는 데이터 인에이블 구간(45) 동안, 제1전송라인(131) 및 제2전송라인(132)을 통해 영상신호를 동일하게 전송한다. 이 때, 에러제어부(136)는 영상신호를 전송하는 디폴트 전송라인으로서 제1전송라인(131)을 선택하고, 제1전송라인(131)을 선택하는 제어신호로서 에러 플래그(ERR FLAG)를 '0'으로 출력한다.First, in operation S50, the error control unit 136 transmits the video signal through the first transmission line 131 and the second transmission line 132 in the same manner during the data enable period 45 during which data transmission is activated . At this time, the error control unit 136 selects the first transmission line 131 as a default transmission line for transmitting the video signal, sets the error flag ERR FLAG as a control signal for selecting the first transmission line 131 to ' 0 '.
다음으로, 동작 S51에서, 에러제어부(136)는 영상신호를 전송하는 동안, 제1전송라인(131) 및 제2전송라인(132) 각각에 대해 오류를 검출하는 동작을 수행한다. Next, in operation S51, the error control unit 136 performs an operation of detecting an error in each of the first transmission line 131 and the second transmission line 132, while transmitting the video signal.
동작 S51의 수행 결과, 제1전송라인(131)에 대한 오류 발생횟수가 제2전송라인(132)에 대한 오류 발생횟수보다 적거나 같은 경우, 동작 S521에서, 에러제어부(136)는 제1전송라인(131)을 유지한다. 이 때, 에러제어부(136)는 동작 S50에서 기 선택된 제1전송라인(131)을 유지하고, 에러 플래그(ERR FLAG)의 출력 값을 '0'으로 유지한다. If the error occurrence count for the first transmission line 131 is less than or equal to the error occurrence count for the second transmission line 132 as a result of the operation S51, the error control unit 136, in operation S521, The line 131 is maintained. At this time, the error control unit 136 holds the first transmission line 131 previously selected in operation S50, and keeps the output value of the error flag ERR FLAG at '0'.
또한, 동작 S51의 수행 결과, 제2전송라인(132)에 대한 오류 발생횟수가 제1전송라인(131)에 대한 오류 발생횟수보다 적은 경우, 동작 S522에서, 에러제어부(136)는 제2전송라인(132)을 선택한다. 이 때, 에러제어부(136)는 제2전송라인(132)을 선택하는 제어신호로서 에러 플래그(ERR FLAG)를 '1'로 출력할 수 있다. If the error occurrence count for the second transmission line 132 is smaller than the error occurrence count for the first transmission line 131 as a result of the operation S51, the error control unit 136, in operation S522, Line 132 is selected. At this time, the error control unit 136 can output the error flag ERR FLAG as '1' as a control signal for selecting the second transmission line 132.
여기서, 동작 S521 및 동작 S522는 데이터 전송이 비활성화되는 데이터 디스에이블 구간(46) 동안 수행되고, 이후 다시 데이터 인에이블 구간(45)에 진입하면 동작 S50을 수행하게 되고, 상기 과정이 반복된다. Here, the operation S521 and the operation S522 are performed during the data disable period 46 during which the data transmission is inactive, and thereafter, when the data enable period 45 is entered again, the operation S50 is performed, and the above process is repeated.
다른 예로서, 동작 S51의 수행 결과, 제1전송라인(131) 및 제2전송라인(132)에 오류가 발생하지 않은 경우에는, 동작 S50의 상태를 유지하도록 한다.As another example, if no error has occurred in the first transmission line 131 and the second transmission line 132 as a result of the operation S51, the state of the operation S50 is maintained.
도 6은 본 발명의 일실시예에 따른 오류 검출 알고리즘을 도시한 예이다. 도 6에 도시된 바와 같이, 본 발명의 에러제어부(136)는 제1전송라인(131)에 대한 오류를 검출함에 있어, 제1전송라인(131)로부터 입력된 영상신호의 데이터(D0)와 룩업테이블(137)에 기 저장된 참조정보(L0)와의 비교를 통해 오류 여부를 판단한다. 6 is an example of an error detection algorithm according to an embodiment of the present invention. 6, the error control unit 136 of the present invention detects errors in the first transmission line 131 by comparing the data D0 of the video signal input from the first transmission line 131 with the data D0 And compares the reference information L0 stored in the lookup table 137 with the previously stored reference information L0.
여기서, 참조정보(L0)는 정상적인 영상신호로 판단할 수 있는 적어도 하나의 데이터를 포함하고, 예컨대, 8B/10B 인코딩 데이터, CRC(cyclic redundancy check) 데이터 및 특정 코드값 중 적어도 하나를 포함한다.Here, the reference information L0 includes at least one data that can be determined as a normal video signal, and includes at least one of, for example, 8B / 10B encoded data, cyclic redundancy check (CRC) data, and a specific code value.
8B/10B 인코딩 데이터는, 영상신호에 대해 8비트(bit)를 10비트로 변환하는 인코딩 방식을 적용한 값으로, 에러제어부(136)는 영상신호의 데이터(D0)와 참조정보(L0)로 저장된 인코딩 값과의 비교를 통해 제1전송라인(131)에 대한 오류 여부를 판단할 수 있다. The 8B / 10B encoded data is a value obtained by applying an encoding method for converting 8 bits to 10 bits for a video signal. The error control unit 136 generates an 8B / 10B encoded data by encoding the video signal D0 and the reference information L0, It is possible to determine whether or not the first transmission line 131 is erroneous.
CRC 데이터는, 데이터의 전송시 전송된 데이터에 오류가 있는지를 확인하기 위해 순환 중복 검사 방식을 적용한 값이다. 이 방식의 경우, 데이터를 전송하기 전에 CRC 값을 계산하여 데이터에 붙여 전송하고, 데이터 전송이 끝난 후 수신한 데이터의 값으로 다시 CRC 값을 계산하여 두 값을 비교하게 된다. The CRC data is a value to which a cyclic redundancy check method is applied to check whether there is an error in data transmitted when data is transmitted. In this method, the CRC value is calculated and transferred to the data before transmission, and the CRC value is calculated again as the value of the data received after the data transmission is completed, thereby comparing the two values.
정상적으로 처리된 영상신호의 경우, 룩업테이블(137)에 저장된 CRC값과 제1전송라인(131)을 통해 전송되어 계산된 CRC 값이 일치하게 된다. 그러나, 영상신호가 비정상적으로 처리된 경우 룩업테이블(137)에 저장된 CRC값과 제1전송라인(131)을 통해 전송되어 계산된 CRC 값이 일치하지 않는다. 따라서, 에러제어부(136)는 CRC 값의 일치 여부에 따라 제1전송라인(131)에 대한 오류 여부를 판단할 수 있다. In the case of the normally processed video signal, the CRC value stored in the look-up table 137 matches the CRC value calculated and transmitted through the first transmission line 131. However, when the video signal is abnormally processed, the CRC value stored in the lookup table 137 and the CRC value transmitted through the first transmission line 131 do not coincide with each other. Accordingly, the error controller 136 can determine whether the first transmission line 131 is erroneous or not according to whether the CRC values match.
이 외에도, 룩업테이블(137)에 기 저장된 참조정보(L0)로서 특정 코드값을 사용할 수 있다. 이 경우, 에러제어부(136)는 CRC 데이터와 마찬가지로, 데이터의 전송 이전에 설정한 코드값과 전송 후의 코드값을 비교하여 제1전송라인(131)에 대한 오류 여부를 판단할 수 있다.In addition, a specific code value can be used as the reference information L0 previously stored in the look-up table 137. [ In this case, like the CRC data, the error control unit 136 can compare the code value set before transmission of data with the code value after transmission to determine whether there is an error with respect to the first transmission line 131. [
도시된 예에서, 에러제어부(136)는 제1전송라인(131)을 통해 전송된 영상신호의 데이터(D0)와 룩업테이블(137)에 저장된 참조정보(L0)를 비교한다. In the illustrated example, the error control unit 136 compares the data D0 of the video signal transmitted through the first transmission line 131 with the reference information L0 stored in the look-up table 137. [
비교 결과, 영상신호의 데이터(D0)와 참조정보(L0)가 동일하면, 에러제어부(136)는 영상신호의 데이터(D0)를 정상적인 신호로 판단하고 제어신호로서 에러 플래그를 '0'으로 출력하여 멀티플렉서(233)로 전송한다. `As a result of the comparison, if the data D0 of the video signal and the reference information L0 are the same, the error control unit 136 determines that the data D0 of the video signal is a normal signal and outputs an error flag as a control signal as '0' And transmits it to the multiplexer 233. `
영상신호의 데이터(D0)와 참조정보(L0)가 동일하지 않은 경우에는, 에러제어부(136)는 영상신호의 데이터(D0)를 비정상적인 신호로 판단하고 제어신호로서 에러 플래그를 '1'로 출력하여 멀티플렉서(233)로 전송한다. If the data D0 of the video signal and the reference information L0 are not equal to each other, the error controller 136 determines that the data D0 of the video signal is an abnormal signal and outputs an error flag as a control signal of '1' And transmits it to the multiplexer 233.
도 7은 본 발명의 일실시예에 따른 오류 검출 결과를 피드백하여 신호 전송을 위한 설정값을 변경하기 위한 구성을 도시한 예이다. 도 7에 도시된 바와 같이, 본 발명의 인터페이스(13)는 세부 구성으로서 에러보상부(71)를 더 포함한다. 7 is an example of a configuration for changing a set value for signal transmission by feeding back an error detection result according to an embodiment of the present invention. As shown in Fig. 7, the interface 13 of the present invention further includes an error compensator 71 as a detailed configuration.
도시된 예에서, 에러제어부(136)는 제1전송라인(131)을 통해 영상신호를 전송하는 동안, 제1전송라인(131)에 대한 오류 여부를 검출한다. In the illustrated example, the error control unit 136 detects an error in the first transmission line 131 while transmitting the video signal through the first transmission line 131. [
이 때, 에러제어부(136)는 오류 검출에 관한 결과를 피드백하기 위해 검출 결과를 에러보상부(71)로 전송한다. At this time, the error control unit 136 transmits the detection result to the error compensation unit 71 in order to feed back the result of the error detection.
일실시예로서, 에러제어부(136)는 오류 검출 결과 제1전송라인(131)에 오류가 발생한 경우, 오류 발생 신호를 에러보상부(71)로 전송한다. 이 때, 에러보상부(71)는 오류 발생 신호에 기초하여 제1전송라인(131)을 통해 전송되는 영상신호의 전송설정값을 변경할 수 있다. In one embodiment, when an error occurs in the first transmission line 131 as a result of error detection, the error control unit 136 transmits an error occurrence signal to the error compensation unit 71. [ At this time, the error compensating unit 71 can change the transmission setting value of the video signal transmitted through the first transmission line 131 based on the error occurrence signal.
여기서, 전송설정값은 예컨대, 이퀄라이저 파라미터(Equalizer parameter), 신호 강도(strength) 등을 포함할 수 있다. Here, the transmission setting value may include, for example, an equalizer parameter, a signal strength, and the like.
에러보상부(71)는 오류 발생시 이퀄라이저 파라미터 등의 설정값을 변경함에 의해, 이후 제1전송라인(131)을 통해 영상신호를 전송함에 있어 오류 발생 가능성을 낮출 수 있다. The error compensating unit 71 can lower the possibility of error occurrence in transmitting the video signal through the first transmission line 131 by changing the set value of the equalizer parameter or the like when an error occurs.
도 8은 본 발명의 일실시예에 따른 전송라인별로 신호 전송을 위한 서로 다른 설정값을 적용하기 위한 구성을 도시한 예이다. 도 8에 도시된 바와 같이, 본 발명의 인터페이스(13)는 세부 구성으로서 제1에러보상부(81) 및 제2에러보상부(82)를 더 포함한다. FIG. 8 illustrates an exemplary configuration for applying different set values for signal transmission on a transmission line according to an exemplary embodiment of the present invention. Referring to FIG. As shown in Fig. 8, the interface 13 of the present invention further includes a first error compensating unit 81 and a second error compensating unit 82 as detailed configurations.
도시된 예에서, 제1에러보상부(81) 및 제2에러보상부(82)는 신호처리부(12)와 제1전송라인(131) 및 제2전송라인(132) 사이에 마련된다.In the illustrated example, the first error compensating unit 81 and the second error compensating unit 82 are provided between the signal processing unit 12 and the first transmission line 131 and the second transmission line 132.
제1에러보상부(81) 및 제2에러보상부(82)는 제1전송라인(131) 및 제2전송라인(132) 에 대해 서로 다른 영상신호의 전송설정값을 설정한다. 이 때, 전송설정값은, 영상신호를 전송하는 중 두 전송라인(131, 132) 각각에 대한 오류 검출 결과에 따라 설정될 수 있다. 다른 예로서, 전송설정값은 제1전송라인(131) 및 제2전송라인(132)을 통해 영상신호를 전송하기 이전에 서로 다른 특정 환경조건에 대응하도록 설정될 수도 있다. 여기서, 전송설정값의 설정은 상기 실시예에 한정되지 않고, 다양한 정보를 이용하여 설정될 수 있다.예로서, 제1에러보상부(81)는 제1전송라인(131)을 통해 전송되는 영상신호에 대한 이퀄라이저 파라미터를 상온 환경에 적합한 값으로 설정할 수 있다. 이 때, 제2에러보상부(82)는 제2전송라인(132)을 통해 전송되는 영상신호에 대한 이퀄라이저 파라미터를 고온 환경에 적합한 값으로 설정할 수 있다.The first error compensating unit 81 and the second error compensating unit 82 set transfer setting values of the different image signals for the first transmission line 131 and the second transmission line 132. At this time, the transmission setting value can be set according to the error detection result for each of the two transmission lines 131 and 132 during transmission of the video signal. As another example, the transmission settings may be set to correspond to different specific environmental conditions prior to transmission of the video signal through the first transmission line 131 and the second transmission line 132. For example, the first error compensator 81 may be configured to compensate for the error of the image transmitted through the first transmission line 131, The equalizer parameter for the signal can be set to a value suitable for the room temperature environment. At this time, the second error compensating unit 82 may set the equalizer parameter for the video signal transmitted through the second transmission line 132 to a value suitable for the high temperature environment.
이에 따라, 상온 환경에서는 제1전송라인(131)을 통해 영상신호를 전송하고, 고온 환경에서는 제2전송라인(132)을 통해 영상신호를 전송하도록 하여, 오류 발생 가능성을 낮출 수 있다.Accordingly, in the room temperature environment, a video signal is transmitted through the first transmission line 131, and in a high-temperature environment, the video signal is transmitted through the second transmission line 132, thereby reducing the possibility of error occurrence.
상기와 같은 실시예에 따라, 각 전송라인에 대해 서로 다른 전송설정값을 적용함에 의해 온도 및 채널 환경 등의 변화에 효과적으로 대응할 수 있다.According to the above-described embodiment, by applying different transmission setting values to each transmission line, it is possible to effectively cope with changes in temperature, channel environment, and the like.
다음으로, 도 9 내지 11에서는, 채널이 두 개 이상인 경우, 영상신호의 특성(예컨대, 이미지의 해상도 등)에 기초하여, 채널을 하나로 할 것인지, 2 이상으로 할 것인지 판단하여 이에 맞게 적응적으로 동작하는 과정을 설명하고자 한다. Next, in FIGS. 9 to 11, if there are two or more channels, it is determined whether to set the channel to one or more than two based on the characteristics (for example, image resolution, etc.) of the video signal and adaptively I will explain the process of operation.
도 9는 본 발명의 일실시예에 따른 복수의 채널이 모두 활성화된 경우 영상신호를 전송하기 위한 구성을 도시한 예이다. 도 9는 두 개의 채널을 모두 사용하는 경우로서, 예컨대 높은 해상도의 영상에 대해 두 채널을 모두 이용하여 영상신호를 전송하는 예이다. 9 is a diagram illustrating a configuration for transmitting an image signal when a plurality of channels are activated according to an exemplary embodiment of the present invention. FIG. 9 shows an example in which both channels are used, and for example, video signals are transmitted using both channels for a high-resolution image.
도시된 예에서, 제1채널(91) 및 제2채널(92)이 모두 활성화된 상태에서, 신호처리부(12)의 출력단으로부터 출력되는 영상신호는 제1채널(91) 및 제2채널(92)을 통해 출력되어 제1전송라인(131) 및 제2전송라인(132)으로 입력된다.The video signal outputted from the output terminal of the signal processing unit 12 is transmitted to the first channel 91 and the second channel 92 And is input to the first transmission line 131 and the second transmission line 132. [
이 때, 제1먹스(231) 및 제2먹스(232)는 신호처리부(12)로부터 수신한 제어신호에 기초하여 활성화된 제1채널(91) 및 제2채널(92)을 통해 영상신호를 제1전송라인(131) 및 제2전송라인(132)으로 각각 출력하도록 한다. The first and second muxes 231 and 232 transmit the image signal through the first channel 91 and the second channel 92 activated based on the control signal received from the signal processing unit 12 To the first transmission line 131 and the second transmission line 132, respectively.
상기와 같은 구성에 의해, 활성화된 제1채널(91) 및 제2채널(92)로부터 출력되어 제1전송라인(131) 및 제2전송라인(132)을 통해 전송되는 영상신호에 대해 오류 처리 동작을 제어할 수 있다.With the above-described configuration, the video signal output from the activated first channel 91 and the second channel 92 and transmitted through the first transmission line 131 and the second transmission line 132 is subjected to error processing The operation can be controlled.
도 10은 본 발명의 일실시예에 따른 복수의 채널 중 활성화된 채널로부터 출력되는 영상신호를 전송하기 위한 구성을 도시한 예이다. 도 10은 두 개의 채널 중 어느 하나를 유휴로 처리하는 경우로서, 예컨대 작은 해상도의 영상에 대해 활성화된 하나의 채널만을 이용하여 영상신호를 전송하는 예이다. 10 is a diagram illustrating a configuration for transmitting an image signal output from an active channel among a plurality of channels according to an exemplary embodiment of the present invention. FIG. 10 shows an example in which an image signal is transmitted using only one channel activated for an image having a small resolution, for example, when any one of the two channels is idle.
도시된 예에서, 신호처리부(12)의 출력단으로부터 출력되는 영상신호는 제1채널(91) 및 제2채널(92) 중 활성화된 제1채널(91)을 통해 출력되어 제1전송라인(131) 및 제2전송라인(132)으로 입력된다.The video signal output from the output terminal of the signal processing unit 12 is output through the first channel 91 of the first channel 91 and the second channel 92 to be transmitted through the first transmission line 131 ) And the second transmission line 132. [
이 때, 제1먹스(231) 및 제2먹스(232)는 신호처리부(12)로부터 수신한 제어신호에 기초하여 활성화된 제1채널(91)을 통해 출력되는 영상신호를 제1전송라인(131) 및 제2전송라인(132)으로 출력하도록 한다. The first and second muxes 231 and 232 transmit the image signal output through the first channel 91 activated on the basis of the control signal received from the signal processing unit 12 to the first transmission line 131 and the second transmission line 132, respectively.
상기와 같은 구성에 의해, 제2채널(92)이 유휴상태인 경우, 활성화된 제1채널(91)로부터 출력되어 제1전송라인(131) 및 제2전송라인(132)을 통해 전송되는 영상신호에 대해 오류 처리 동작을 제어할 수 있다.In the case where the second channel 92 is in an idle state, an image outputted from the activated first channel 91 and transmitted through the first transmission line 131 and the second transmission line 132 The error handling operation can be controlled for the signal.
도 11은 본 발명의 일실시예에 따른 복수의 채널 중 활성화된 채널로부터 출력되는 영상신호를 전송하기 위한 구성을 도시한 예이다. 도 11은, 도 10의 경우와는 다른 실시예로서, 제1채널(91)이 유휴상태인 경우, 도 10에서 설명한 방법과 마찬가지로 오류 처리 동작을 제어하는 예를 도시한다.11 is a diagram illustrating a configuration for transmitting an image signal output from an active channel among a plurality of channels according to an exemplary embodiment of the present invention. Fig. 11 shows an example in which the error processing operation is controlled in the same manner as the method explained in Fig. 10 when the first channel 91 is in an idle state, which is different from the case of Fig.
도 12는 본 발명의 일실시예에 따른 디스플레이장치의 제어방법을 도시한 흐름도이다. 도 12에 도시된 바와 같이, 먼저 동작 S70에서, 신호처리부(12)의 출력단에 의해, 영상신호를 출력한다. 12 is a flowchart illustrating a method of controlling a display device according to an embodiment of the present invention. As shown in Fig. 12, first, in step S70, the video signal is output by the output terminal of the signal processing unit 12. Fig.
다음으로, 동작 S71에서, 에러제어부(136)에 의해, 신호처리부(12)의 출력단과 디스플레이부(14)의 입력단 사이에 병렬적으로 연결되는 제1전송라인(131) 및 제2전송라인(132) 중 제1전송라인(131)을 통해 출력단으로부터 입력단으로 영상신호를 전송한다. Next, in operation S71, the error control section 136 controls the first transmission line 131 and the second transmission line 131, which are connected in parallel between the output terminal of the signal processing section 12 and the input terminal of the display section 14, 132 through the first transmission line 131 from the output terminal to the input terminal.
여기서, 동작 S71은, 신호처리부(12)의 출력단으로부터 복수의 출력라인을 통해 출력되는 영상신호를 제1전송라인(131)으로 출력되도록 병렬-직렬 변환하는 동작과, 제1전송라인(131)으로부터 입력되는 영상신호를 복수의 입력라인을 통해 디스플레이부(14)의 입력단으로 입력되도록 직렬-병렬 변환하는 동작을 더 포함할 수 있다. The operation S71 includes an operation of parallel-serial-converting the video signal output from the output terminal of the signal processing unit 12 through the plurality of output lines to the first transmission line 131, Parallel conversion so that the video signal input from the input terminal of the display unit 14 is input to the input terminal of the display unit 14 through the plurality of input lines.
마지막으로, 동작 S72에서, 에러제어부(136)에 의해, 영상신호의 전송 중 제1전송라인(131)에 오류가 발생하면, 제2전송라인(132)으로 전환한다. Finally, when an error occurs in the first transmission line 131 during the transmission of the video signal, the error control unit 136 switches to the second transmission line 132 in operation S72.
여기서, 동작 S72는, 영상신호의 데이터 인에이블 구간(45) 동안 제1전송라인(131)에 대해 오류를 검출하는 동작과, 영상신호의 데이터 디스에이블 구간(46) 동안 제2전송라인(132)으로 전환하는 동작을 포함할 수 있다. Here, the operation S72 includes an operation of detecting an error with respect to the first transmission line 131 during the data enable period 45 of the video signal and an operation of detecting an error during the data disable period 46 of the video signal by the second transmission line 132 ). ≪ / RTI >
일실시예로서, 동작 S72는, 제1전송라인(131) 및 제2전송라인 각각에 대해 오류를 검출하고, 오류 발생횟수가 적은 전송라인으로 전환하는 동작을 포함할 수 있다.In one embodiment, operation S72 may include detecting an error for each of the first transmission line 131 and the second transmission line, and switching to a transmission line with a small number of error occurrences.
일실시예로서, 동작 S72는, 정상적인 영상신호의 참조정보에 기초하여 제1전송라인(131)에 대한 오류를 검출하는 동작을 더 포함할 수 있다. In one embodiment, operation S72 may further include detecting an error for the first transmission line 131 based on reference information of a normal video signal.
또한, 동작 S72는, 제1전송라인(131) 및 제2전송라인(132) 중 어느 하나를 통해서 영상신호를 선택적으로 출력하도록 제어신호를 멀티플렉서(233)로 전송하는 동작을 포함할 수 있다. Operation S72 may also include transmitting a control signal to the multiplexer 233 to selectively output the video signal through either the first transmission line 131 or the second transmission line 132. [
일실시예로서, 동작S72는, 제1전송라인(131)에 오류 발생시, 제1전송라인(131)을 통해 전송되는 영상신호의 전송설정값을 변경하는 동작을 포함할 수 있다.In one embodiment, the operation S72 may include an operation to change a transmission setting value of a video signal transmitted through the first transmission line 131 when an error occurs in the first transmission line 131. [
일실시예로서, 동작 S72는, 제1전송라인(131) 및 제2전송라인(132) 각각에 대한 영상신호의 전송설정값을 서로 다르게 설정하는 동작을 포함할 수 있다. In one embodiment, the operation S72 may include setting different transmission setting values of the video signal for the first transmission line 131 and the second transmission line 132, respectively.
여기서, 에러제어부(236)는, 제1전송라인(131) 및 제2전송라인(132)과 디스플레이부(14)의 입력단 사이에 마련될 수 있다. The error control unit 236 may be provided between the first transmission line 131 and the second transmission line 132 and between the input ends of the display unit 14.
일실시예로서, 신호처리부(12)의 출력단으로부터 영상신호가 출력되는 제1채널(91) 및 제2채널(92) 각각에 대하여 제1전송라인(131) 및 제2전송라인(132)이 병렬적으로 마련될 수 있다. 이 때, 제2채널(92)이 유휴상태인 경우, 제1채널(91)에 대하여 오류 처리 동작을 제어하는 동작을 포함할 수 있다.The first transmission line 131 and the second transmission line 132 are connected to the first channel 91 and the second channel 92 from which the video signal is output from the output terminal of the signal processing unit 12, May be provided in parallel. At this time, if the second channel 92 is idle, it may include an operation of controlling an error handling operation for the first channel 91. [
상기와 같이 본 발명의 실시예에 의하면, 인터페이스를 이용하여 영상신호를 전송함에 있어, 사용중인 전송라인에 문제가 생기는 경우에도 안정적으로 데이터를 전송할 수 있다. 또한, 환경적인 요인에 상관 없이 시청되는 영상의 품질을 보장할 수 있다.As described above, according to the embodiment of the present invention, when transmitting a video signal using an interface, even when a problem occurs in a transmission line in use, data can be transmitted stably. In addition, it is possible to guarantee the quality of an image to be viewed regardless of environmental factors.
이상, 바람직한 실시예를 통하여 본 발명에 관하여 상세히 설명하였으나, 본 발명은 이에 한정되는 것은 아니며, 특허청구범위 내에서 다양하게 실시될 수 있다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

Claims (15)

  1. 디스플레이장치에 있어서,In the display device,
    영상신호의 출력단을 포함하는 신호처리부와;A signal processing unit including an output terminal of the video signal;
    상기 영상신호의 입력단을 포함하는 디스플레이부와;A display unit including an input terminal of the video signal;
    상기 신호처리부의 출력단과 상기 디스플레이부의 입력단 사이에 병렬적으로 연결되어, 상기 출력단으로부터 상기 입력단으로 상기 영상신호를 전송할 수 있는 제1전송라인 및 제2전송라인과;A first transmission line and a second transmission line connected in parallel between an output terminal of the signal processing unit and an input terminal of the display unit and capable of transmitting the video signal from the output terminal to the input terminal;
    상기 영상신호를 상기 제1전송라인을 통해 전송하고, 상기 영상신호의 전송 중 상기 제1전송라인에 오류가 발생하면, 상기 제2전송라인으로 전환하도록 제어하는 제어부를 포함하는 디스플레이장치.And a control unit for controlling the switching of the video signal to the second transmission line when an error occurs in the first transmission line during transmission of the video signal.
  2. 제1항에 있어서,The method according to claim 1,
    상기 신호처리부의 출력단과 상기 제1전송라인 사이에 마련되는 병렬-직렬 변환부와; A parallel-to-serial conversion unit provided between an output terminal of the signal processing unit and the first transmission line;
    상기 제1전송라인과 상기 디스플레이부의 입력단 사이에 마련되는 직렬-병렬 변환부를 더 포함하는 디스플레이장치.And a serial-to-parallel conversion unit provided between the first transmission line and an input terminal of the display unit.
  3. 제1항에 있어서,The method according to claim 1,
    상기 제어부는, 상기 영상신호의 데이터 인에이블(enable) 구간 동안 상기 제1전송라인에 대해 오류를 검출하고, 상기 영상신호의 데이터 디스에이블(disable) 구간 동안 상기 제2전송라인으로 전환하는 디스플레이장치.Wherein the control unit detects an error in the first transmission line during a data enable period of the video signal and switches to the second transmission line during a data disable period of the video signal, .
  4. 제1항에 있어서,The method according to claim 1,
    상기 제어부는, 상기 제1전송라인 및 상기 제2전송라인 각각에 대해 오류를 검출하고, 오류 발생횟수가 적은 전송라인으로 전환하는 디스플레이장치.Wherein the control unit detects an error in each of the first transmission line and the second transmission line and switches to a transmission line having a small number of error occurrences.
  5. 제1항에 있어서,The method according to claim 1,
    상기 제어부는, 정상적인 영상신호의 참조정보에 기초하여 상기 제1전송라인에 대한 오류를 검출하는 디스플레이장치.Wherein the control unit detects an error with respect to the first transmission line based on reference information of a normal video signal.
  6. 제1항에 있어서,The method according to claim 1,
    상기 제어부와 상기 디스플레이부의 입력단 사이에 마련되고, 상기 제1전송라인 및 상기 제2전송라인 중 어느 하나를 통해서 전송되는 영상신호를 선택적으로 출력하는 멀티플렉서를 더 포함하고,Further comprising a multiplexer provided between the control unit and an input terminal of the display unit and selectively outputting a video signal transmitted through any one of the first transmission line and the second transmission line,
    상기 제어부는, 상기 제1전송라인 및 상기 제2전송라인 중 어느 하나를 통해서 상기 영상신호를 선택적으로 출력하도록 제어신호를 상기 멀티플렉서로 전송하는 디스플레이장치.Wherein the control unit transmits a control signal to the multiplexer so as to selectively output the video signal through any one of the first transmission line and the second transmission line.
  7. 제1항에 있어서,The method according to claim 1,
    상기 제어부는, 상기 제1전송라인에 오류 발생시, 상기 제1전송라인을 통해 전송되는 영상신호의 전송설정값을 변경하는 디스플레이장치.Wherein the control unit changes a transmission setting value of a video signal transmitted through the first transmission line when an error occurs in the first transmission line.
  8. 제1항에 있어서,The method according to claim 1,
    상기 제어부는, 상기 제1전송라인 및 상기 제2전송라인 각각에 대한 영상신호의 전송설정값을 서로 다르게 설정하는 디스플레이장치.Wherein the control unit sets different transfer setting values of the video signals for the first transmission line and the second transmission line, respectively.
  9. 제1항에 있어서,The method according to claim 1,
    상기 제어부는, 상기 제1전송라인 및 제2전송라인과 상기 디스플레이부의 입력단 사이에 마련되는 디스플레이장치. Wherein the control unit is provided between the first transmission line and the second transmission line and the input end of the display unit.
  10. 제1항에 있어서,The method according to claim 1,
    상기 신호처리부의 출력단으로부터 상기 영상신호가 출력되는 제1채널 및 제2채널 각각에 대하여 상기 제1전송라인 및 상기 제2전송라인이 병렬적으로 마련되며,The first transmission line and the second transmission line are provided in parallel with respect to the first channel and the second channel from which the video signal is output from the output terminal of the signal processing unit,
    상기 제어부는, 상기 제2채널이 유휴상태인 경우, 상기 제1채널에 대하여 상기 오류 처리 동작을 제어하는 디스플레이장치.Wherein the control unit controls the error processing operation for the first channel when the second channel is in an idle state.
  11. 디스플레이장치의 제어방법에 있어서,A method of controlling a display device,
    신호처리부의 출력단에 의해, 영상신호를 출력하는 단계와;Outputting a video signal by an output terminal of the signal processing unit;
    제어부에 의해, 상기 신호처리부의 출력단과 디스플레이부의 입력단 사이에 병렬적으로 연결되는 제1전송라인 및 제2전송라인 중 상기 제1전송라인을 통해 상기 출력단으로부터 상기 입력단으로 상기 영상신호를 전송하는 단계와;Transmitting the video signal from the output terminal to the input terminal through the first transmission line among the first transmission line and the second transmission line connected in parallel between the output terminal of the signal processing unit and the input terminal of the display unit, Wow;
    상기 제어부에 의해, 상기 영상신호의 전송 중 상기 제1전송라인에 오류가 발생하면, 상기 제2전송라인으로 전환하는 단계를 포함하는 디스플레이장치의 제어방법.And switching to the second transmission line when an error occurs in the first transmission line during transmission of the video signal by the control unit.
  12. 제11항에 있어서,12. The method of claim 11,
    상기 신호처리부의 출력단으로부터 복수의 출력라인을 통해 출력되는 영상신호를 제1전송라인으로 출력되도록 병렬-직렬 변환하는 단계와;Parallel-converting the video signal output through the plurality of output lines from the output terminal of the signal processing unit to output the video signal to the first transmission line;
    상기 제1전송라인으로부터 입력되는 영상신호를 복수의 입력라인을 통해 상기 디스플레이부의 입력단으로 입력되도록 직렬-병렬 변환하는 단계를 더 포함하는 디스플레이장치의 제어방법.And converting the video signal input from the first transmission line into serial-parallel conversion so as to be input to an input terminal of the display unit through a plurality of input lines.
  13. 제11항에 있어서,12. The method of claim 11,
    상기 영상신호의 데이터 인에이블(enable) 구간 동안 상기 제1전송라인에 대해 오류를 검출하는 단계와;Detecting an error for the first transmission line during a data enable period of the video signal;
    상기 영상신호의 데이터 디스에이블(disable) 구간 동안 상기 제2전송라인으로 전환하는 단계를 포함하는 디스플레이장치의 제어방법.And switching to the second transmission line during a data disable period of the video signal.
  14. 제11항에 있어서,12. The method of claim 11,
    상기 제1전송라인 및 상기 제2전송라인 각각에 대해 오류를 검출하고, 오류 발생횟수가 적은 전송라인으로 전환하는 단계를 포함하는 디스플레이장치의 제어방법.Detecting an error for each of the first transmission line and the second transmission line, and switching to a transmission line having a small number of error occurrences.
  15. 제11항에 있어서,12. The method of claim 11,
    정상적인 영상신호의 참조정보에 기초하여 상기 제1전송라인에 대한 오류를 검출하는 단계를 더 포함하는 디스플레이장치의 제어방법.And detecting an error for the first transmission line based on reference information of a normal video signal.
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