WO2011077986A1 - 送信装置、受信装置、送受信システムおよび画像表示システム - Google Patents
送信装置、受信装置、送受信システムおよび画像表示システム Download PDFInfo
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- WO2011077986A1 WO2011077986A1 PCT/JP2010/072359 JP2010072359W WO2011077986A1 WO 2011077986 A1 WO2011077986 A1 WO 2011077986A1 JP 2010072359 W JP2010072359 W JP 2010072359W WO 2011077986 A1 WO2011077986 A1 WO 2011077986A1
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- clock
- terminal
- data
- receiving devices
- receiving
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0421—Structural details of the set of electrodes
- G09G2300/0426—Layout of electrodes and connections
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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
- G09G2310/00—Command of the display device
- G09G2310/08—Details of timing specific for flat panels, other than clock recovery
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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
- G09G2370/00—Aspects of data communication
- G09G2370/08—Details of image data interface between the display device controller and the data line driver circuit
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0264—Arrangements for coupling to transmission lines
Definitions
- the present invention relates to a transmission device, a reception device, a transmission / reception system, and an image display system.
- An image display system such as a liquid crystal display system includes a transmission device, a reception device, and an image display unit, and transmits image data and a clock from the transmission device to which an image signal is input from the outside to the reception device. , And the image data obtained by the sampling is sent to the signal line, and the image is displayed on the image display unit based on the image data sent to the signal line.
- a transmission device or a device including the transmission device is referred to as a “timing controller”, and the above-described reception device or a device including the device is referred to as a “driver”.
- the transmission device in a transmission / reception system in which data and a clock are transmitted from one transmission device to each of a plurality of reception devices arranged one-dimensionally, the transmission device is connected to each reception device.
- the transmitting device may send the clock individually to each receiving device. May be sent out (see Patent Document 1).
- the latter case is preferable to the former case in that the number of wires for clock transmission / reception between the transmission device and the plurality of reception devices is reduced.
- the present invention has been made to solve the above-described problems, and can reduce the number of wiring lines for clock transmission between a transmission apparatus and a plurality of reception apparatuses and perform high-speed data transmission. It is an object of the present invention to provide a transmission device and a reception device that can be used. It is another object of the present invention to provide a transmission / reception system including such a transmission device and a reception device, and an image display system including such a transmission device, a reception device, and an image display unit.
- the transmission device is a transmission device that transmits a clock and data to each of N receiving devices arranged in a one-dimensional form, and (1) individually for each of the N receiving devices.
- N The data output terminals corresponding to each of the receiving devices are arranged in the same order as the arrangement order of the N receiving devices.
- the first clock output terminal is the data output terminal corresponding to each of the p receiving devices.
- a data output terminal corresponding to a receiving device other than the p receiving devices out of the N receiving devices is arranged on the entire first direction side with no intervening therebetween.
- N and p are integers of 2 or more.
- the receiving apparatus is (1) a data input terminal for inputting data from the outside, a first clock terminal for inputting a clock from the outside, and a buffer for outputting the clock input to the first clock terminal for output.
- a data input terminal is disposed between the first clock terminal and the second clock terminal. It is characterized by.
- the transmission / reception system includes (1) a transmission apparatus according to the present invention and N reception apparatuses according to the present invention arranged in a one-dimensional manner, and (2) N receptions
- the data input terminal of each device inputs data output from the corresponding data output terminal among the data output terminals arranged in the same order as the arrangement order of the N receiving devices in the transmitting device, and (3) N pieces of data
- the arrangement of the first clock terminal with respect to the data input terminal in each of the p receiving devices arranged in sequence among the receiving devices is such that the first clock output to the data output terminal corresponding to each of the p receiving devices in the transmitting device.
- the first clock terminal of the receiving device at the end of the first direction side among (4) p receiving devices is output from the first clock output terminal of the transmitting device.
- the data and clock signal lines between the transmission device and the reception device may be physically one line, or a low-amplitude differential signal system (LVDS: Low-Voltage Differential Signaling).
- LVDS Low-Voltage Differential Signaling
- a pair of lines for transmitting differential data may be used.
- the transmitting apparatus outputs (1) a second clock that outputs a common clock to q consecutively arranged receiving apparatuses other than p receiving apparatuses out of N receiving apparatuses.
- a clock output terminal; (2) the second clock output terminal is connected to the q data reception terminals corresponding to each of the q reception apparatuses, and the q receptions of the N reception apparatuses (3)
- the first clock output terminal and the second clock output terminal are data corresponding to each of the p receiving apparatuses. It is preferable to arrange between the whole output terminal and the whole data output terminal corresponding to each of the q reception devices.
- q is an integer of 2 or more.
- a receiving apparatus includes a second buffer circuit for buffering a clock input to a second clock terminal and outputting the same from the first clock terminal, and one of the first buffer circuit and the second buffer circuit. It is preferable to further comprise selection means for selectively operating the.
- the transmission / reception system includes (1) a transmission apparatus according to the present invention and N reception apparatuses according to the present invention arranged in a one-dimensional manner, and (2) N receptions
- the data input terminal of each device inputs data output from the corresponding data output terminal among the data output terminals arranged in the same order as the arrangement order of the N receiving devices in the transmitting device, and (3) N pieces of data
- the arrangement of the first clock terminal with respect to the data input terminal in each of the p receiving devices arranged in sequence among the receiving devices is such that the first clock output to the data output terminal corresponding to each of the p receiving devices in the transmitting device.
- the first clock terminal of the receiving device at the end of the first direction side among (4) p receiving devices is output from the first clock output terminal of the transmitting device.
- the arrangement of the second clock terminal with respect to the data input terminal in each of the q receiving devices arranged in succession other than the p receiving devices among the N receiving devices is: In the second direction side, which is the same as the arrangement of the second clock output terminal with respect to the data output terminal corresponding to each of the q reception devices, and (7) reception at the end of the second direction side among the q reception devices.
- the second clock terminal of the device receives the clock output from the second clock output terminal of the transmitter, and (8) the first clock terminal of the receiver among the q receivers and the receiver adjacent thereto Second clock end of DOO are connected to each other, wherein the q number of receiving devices are cascade-connected with respect to the clock.
- the transmitter according to the present invention further comprises (1) a data input terminal for inputting data output from each of the p receivers, and (2) the data input terminal corresponds to each of the p receivers.
- the data output terminals are preferably arranged on either side of the entire data output terminal and the first clock output terminal.
- the receiving apparatus according to the present invention further comprises (1) a first data terminal and a second data terminal for inputting data from the outside or outputting the data to the outside, and (2) a data input terminal, a first clock terminal and a second data terminal.
- the two clock terminals are preferably arranged between the first data terminal and the second data terminal.
- the transmission / reception system includes (1) a transmission apparatus according to the present invention and N reception apparatuses according to the present invention arranged in a one-dimensional manner, and (2) N receptions
- the data input terminal of each device inputs data output from the corresponding data output terminal among the data output terminals arranged in the same order as the arrangement order of the N receiving devices in the transmitting device, and (3) N pieces of data
- the arrangement of the first clock terminal with respect to the data input terminal in each of the p receiving devices arranged in sequence among the receiving devices is such that the first clock output to the data output terminal corresponding to each of the p receiving devices in the transmitting device.
- the first clock terminal of the receiving device at the end of the first direction side among (4) p receiving devices is output from the first clock output terminal of the transmitting device.
- the second data terminal of the receiving device among the p receiving devices and the first data terminal of the receiving device adjacent thereto are connected to each other.
- the transmitter according to the present invention further comprises (1) a data input terminal for inputting data output from each of the p receivers, and (2) the data input terminal corresponds to each of the p receivers. Between the entire data output terminal and the first clock output terminal, or on the opposite side of the first clock output terminal with respect to the entire data output terminal corresponding to each of the p receiving devices. Is preferred.
- the receiving apparatus according to the present invention further includes (1) a first data terminal and a second data terminal for inputting data from the outside or outputting the data to the outside, and (2) the first data terminal is a first clock terminal.
- the second data terminal is disposed between the data input terminal and (3) the second data terminal is disposed between the second clock terminal and the data input terminal.
- the transmission / reception system includes (1) a transmission apparatus according to the present invention and N reception apparatuses according to the present invention arranged in a one-dimensional manner, and (2) N receptions
- the data input terminal of each device inputs data output from the corresponding data output terminal among the data output terminals arranged in the same order as the arrangement order of the N receiving devices in the transmitting device, and (3) N pieces of data
- the arrangement of the first clock terminal with respect to the data input terminal in each of the p receiving devices arranged in sequence among the receiving devices is such that the first clock output to the data output terminal corresponding to each of the p receiving devices in the transmitting device.
- the first clock terminal of the receiving device at the end of the first direction side among (4) p receiving devices is output from the first clock output terminal of the transmitting device.
- the second data terminal of the receiving device among (6) receiving devices and the first data terminal of the receiving device adjacent thereto are connected to each other.
- the transmitting apparatus further includes a control unit that adjusts a phase difference between data output from the data output terminal corresponding to each of the p receiving apparatuses and a clock output from the first clock output terminal. It is suitable to provide.
- the receiving apparatus according to the present invention preferably outputs data relating to a phase difference between data input to the data input terminal and a clock input to the clock input terminal from the first data terminal or the second data terminal. is there.
- the transmission / reception system includes (1) a transmission apparatus according to the present invention and N reception apparatuses according to the present invention arranged in a one-dimensional manner, and (2) N receptions
- the data input terminal of each device inputs data output from the corresponding data output terminal among the data output terminals arranged in the same order as the arrangement order of the N receiving devices in the transmitting device, and (3) N pieces of data
- the arrangement of the first clock terminal with respect to the data input terminal in each of the p receiving devices arranged in sequence among the receiving devices is such that the first clock output to the data output terminal corresponding to each of the p receiving devices in the transmitting device.
- the first clock terminal of the receiving device at the end of the first direction side among (4) p receiving devices is output from the first clock output terminal of the transmitting device.
- the second data terminal of the receiving device among the p receiving devices and the first data terminal of the receiving device adjacent thereto are connected to each other, and (7) the control unit of the transmitting device is , Data output from the data output terminal corresponding to each of the p receiving devices and the first clock based on the data regarding the phase difference output from the first data terminal or the second data terminal of each of the p receiving devices. It is characterized by adjusting a phase difference from a clock output from an output terminal.
- An image display system includes: the transmission / reception system according to the present invention; and an image display unit that displays an image based on data received by each of the N receiving devices included in the transmission / reception system.
- the present invention it is possible to reduce the number of wires for clock transmission between the transmission device and the plurality of reception devices, and to perform data transmission at high speed.
- FIG. 1 is a diagram showing a schematic configuration of the image display system 1.
- FIG. 2 is a diagram illustrating a configuration of a transmission / reception system 2A including the transmission device 10 and the N reception devices 20 1 to 20 N.
- FIG. 3 is a diagram illustrating a configuration of the receiving device 20.
- FIG. 4 is a diagram illustrating a configuration of a transmission / reception system 2B including the transmission device 10 and the N reception devices 20 1 to 20 N.
- FIG. 5 is a diagram illustrating a configuration of the receiving device 20.
- FIG. 6 is a diagram illustrating a configuration of a transmission / reception system 2C including the transmission device 10 and the N reception devices 20 1 to 20 N.
- FIG. 7 is a diagram illustrating a configuration of a transmission / reception system 2D including a transmission device 10 and N reception devices 20 1 to 20 N.
- FIG. 8 is a diagram illustrating a configuration of the transmission device 10 included in the transmission / reception system 2C or the transmission / reception system 2D.
- FIG. 1 is a diagram showing a schematic configuration of an image display system 1 according to the present embodiment.
- the image display system 1 shown in this figure includes a transmitting device 10, N receiving devices 20 1 to 20 N, and an image display unit 30.
- N is an integer of 2 or more
- n appearing below is an integer of 1 or more and N or less.
- the drive unit and signal lines for vertical scanning of an image in the image display unit 30 are not shown.
- the transmitting device 10 receives an image signal from the outside and transmits image data and a clock to each of the N receiving devices 20 1 to 20 N.
- Each receiving device 20 n receives the image data and clock transmitted from the transmitting device 10, samples the image data by the clock, and uses the image data obtained by this sampling as the signal line 31 of the image display unit 30. send to n .
- the image display unit 30 is a liquid crystal panel, for example, and displays an image based on the image data supplied to the signal line 31 n by each receiving device 20 n .
- the signal line 31 n may be one or more.
- FIG. 2 is a diagram illustrating a configuration of a transmission / reception system 2A including a transmission device 10 and N reception devices 20 1 to 20 N.
- the N receiving devices 20 1 to 20 N have a common configuration, and are arranged one-dimensionally in this order.
- Each of the transmitting device 10 and the N receiving devices 20 1 to 20 N includes an integrated circuit formed on a semiconductor substrate, and also includes an external terminal for electrical connection between the integrated circuit and an external device.
- the transmission device 10 is provided on the wiring board 40.
- An external terminal of the transmission device 10 is electrically connected to two connectors 41 and 42 provided on one side of the wiring board 40 by wiring on the wiring board 40.
- the connector 41 of the wiring board 40 is electrically connected to the connector 51 of the wiring board 50.
- the connector 42 of the wiring board 40 is electrically connected to the connector 61 of the wiring board 60.
- the receiving devices 20 1 to 20 p are sides facing the side where the connector 51 of the wiring board 50 is provided via the wiring on the cables 70 1 to 70 p. Are electrically connected to the wiring on the wiring board 50.
- the receiving devices 20 p + 1 to 20 N are electrically connected to the wiring on the wiring board 60 on the side opposite to the side where the connector 61 of the wiring board 60 is provided via the wiring on the cables 70 p + 1 to 70 N.
- p is an integer of 2 or more.
- FIG. 3 is a diagram illustrating a configuration of the receiving device 20 n .
- the receiving device 20 n includes a data input buffer 21, a first clock input buffer 22 1 , a first clock output buffer 23 1 , a sampler unit 24, and a decoder unit 25.
- the data input buffer 21 buffers data input as differential signals to the data input terminals P 11 and P 12 and outputs the data to the sampler unit 24.
- the data input terminals P 11 and P 12 are provided between the first clock terminals P 21 and P 22 and the second clock terminals P 31 and P 32. Is arranged.
- Sampler section 24 the clock output from the first clock input buffer 22 1, by sampling the data output from the data input buffer 21, and outputs the data obtained by the sampling to the decoder unit 25.
- the decoder unit 25 decodes the data output from the sampler unit 24 and sends the data to the signal line 31 n .
- the transmission device 10 includes a data output terminal that outputs data DATA (n) individually to each reception device 20 n .
- the transmitting device 10 outputs a first clock CLOCK (1) to the p receiving devices 20 1 to 20 p arranged in succession among the N receiving devices 20 1 to 20 N.
- An output terminal is provided.
- the transmitting apparatus 10 outputs a second clock output for outputting a common clock CLOCK (2) to the receiving apparatuses 20 p + 1 to 20 N arranged in succession among the N receiving apparatuses 20 1 to 20 N. It has a terminal.
- the data output terminals corresponding to N reception devices 20 1 ⁇ 20 N, respectively, are arranged in the same order as the arrangement order of the N reception devices 20 1 ⁇ 20 N.
- the first clock output terminal that outputs the clock CLOCK (1) is connected to another receiving apparatus on the first direction (left side in FIG. 2) side of the entire data output terminal corresponding to each of the receiving apparatuses 20 1 to 20 p .
- the second clock output terminal that outputs the clock CLOCK (2) has other data output terminals corresponding to the receiving devices 20 p + 1 to 20 N in the first direction (left side in FIG. 2) on the other side.
- the data output terminals corresponding to the receiving apparatus are arranged without interposing them.
- the data input terminals P 11 and P 12 of each receiving apparatus 20 n are connected to the corresponding data output terminals among the data output terminals arranged in the same order as the arrangement order of the N receiving apparatuses 20 1 to 20 N in the transmitting apparatus 10.
- the output data dATA (n) the wiring board 40, and inputs the wiring board 50 or the wiring board 60 and via a cable 70 n.
- the arrangement of the first clock terminals P 21 and P 22 with respect to the data input terminals P 11 and P 12 in each of the receiving devices 20 1 to 20 p is arranged in the transmitting device 10 with respect to the data output terminals corresponding to the receiving devices 20 1 to 20 p . It is the same side as the arrangement of the first clock output terminals in the first direction (left side in FIG. 2). Similarly, the arrangement of the first clock terminal P 21, P 22 to the data input terminal P 11, P 12 in the receiver 20 p + 1 ⁇ 20 N, respectively, the data corresponding to each reception device 20 p + 1 ⁇ 20 N in the transmitter 10 This is the same first direction (left side in FIG. 2) side as the arrangement of the second clock output terminal with respect to the output terminal.
- the first clock terminals P 21 and P 22 of the receiving device 20 1 at the end of the receiving devices 20 1 to 20 p on the first direction (left side in FIG. 2) are the first clock output of the transmitting device 10. Input the clock CLOCK (1) output from the terminal. And the first clock terminal P 21, P 22 of the reception apparatus 20 n + 1 to the second clock terminal P 31, P 32 of the reception device 20 n of the receiving apparatus 20 1 ⁇ 20 p adjacent thereto are connected to each other The receiving devices 20 1 to 20 p are connected in cascade with respect to the clock CLOCK (1).
- the first clock terminals P 21 and P 22 of the receiver 20 p + 1 at the end of the receivers 20 p + 1 to 20 N on the first direction (left side in FIG. 2) side are the first clock terminals P 21 and P 22 of the transmitter 10. Input the clock CLOCK (2) output from the 2-clock output terminal. And the first clock terminal P 21, P 22 of the receiving apparatus 20 p + 1 ⁇ 20 receiving device adjacent thereto a second clock terminal P 31, P 32 of the reception device 20 n of the N 20 n + 1 is not connected to each other The receiving devices 20 p + 1 to 20 N are connected in cascade with respect to the clock CLOCK (2).
- a common clock CLOCK (1) is supplied from the transmission device 10 to the reception devices 20 1 to 20 p , and the transmission device 10 receives the reception devices 20 p + 1 to 20 N. Since the common clock CLOCK (2) is supplied to the transmitter, the number of wires for clock transmission between the transmitter 10 and the receivers 20 1 to 20 N is reduced. In addition, since a clock input to a certain receiving device 20 n is buffered and output and given to the adjacent receiving device 20 n + 1 , it is possible to suppress the waveform deterioration of the clock and increase the clock frequency. It is also possible to improve the bit rate of data transmission.
- the wiring layers 40, 50, 60 between them are formed of conductive layers. An inexpensive product having a small number of layers can be used.
- FIG. 4 is a diagram illustrating a configuration of a transmission / reception system 2B including a transmission device 10 and N reception devices 20 1 to 20 N.
- the configuration of the reception system 2B shown in FIG. 4 is different in terms of the receiving device 20 1 ⁇ 20 p configuration, also, the transmitter 10
- the external terminals are different in the arrangement order of the external terminals connected to the receiving devices 20 1 to 20 p .
- Each of the receiving devices 20 1 to 20 p includes a data input buffer 21, a second clock input buffer 22 2 , a second clock output buffer 23 2 , a sampler unit 24, and a decoder unit 25.
- the second clock input buffer 22 2 buffers the clock input as a differential signal to the second clock terminals P 31 and P 32, and sends the clock to the sampler unit 24. outputs, and outputs it to the second clock output buffer 23 2.
- the second clock output buffer 23 2 buffers the clock input from the second clock input buffer 22 2, and uses the clock as the first clock terminals P 21 , P 22 is output as a differential signal.
- the data input terminals P 11 and P 12 are arranged between the first clock terminals P 21 and P 22 and the second clock terminals P 31 and P 32 .
- the data output terminals corresponding to N reception devices 20 1 ⁇ 20 N, respectively, are arranged in the same order as the arrangement order of the N reception devices 20 1 ⁇ 20 N.
- the first clock output terminal that outputs the clock CLOCK (1) is connected to another receiving apparatus on the first direction (right side in FIG. 4) side of the entire data output terminal corresponding to each of the receiving apparatuses 20 1 to 20 p .
- the second clock output terminal for outputting the clock CLOCK (2) has other data output terminals corresponding to the receiving devices 20 p + 1 to 20 N in the second direction (left side in FIG. 4) on the other side.
- the data output terminals corresponding to the receiving apparatus are arranged without interposing them.
- the first clock output terminal and the second clock output terminal include the entire data output terminals corresponding to the receiving apparatuses 20 1 to 20 p and the entire data output terminals corresponding to the receiving apparatuses 20 p + 1 to 20 N, respectively. Arranged between.
- the data input terminals P 11 and P 12 of each receiving apparatus 20 n are connected to the corresponding data output terminals among the data output terminals arranged in the same order as the arrangement order of the N receiving apparatuses 20 1 to 20 N in the transmitting apparatus 10.
- the output data dATA (n) the wiring board 40, and inputs the wiring board 50 or the wiring board 60 and via a cable 70 n.
- the second clock terminals P 31 and P 32 of the receiving device 20 p at the end of the receiving devices 20 1 to 20 p on the first direction (right side in FIG. 4) are the first clock output of the transmitting device 10.
- Input the clock CLOCK (1) output from the terminal. are connected to each other and the second clock terminal P 31, P 32 of the reception device 20 n-1 to the first clock terminal P 21, P 22 of the reception apparatus 20 n of the receiving apparatus 20 1 ⁇ 20 p adjacent thereto
- the receiving devices 20 1 to 20 p are connected in cascade with respect to the clock CLOCK (1).
- the first clock terminals P 21 and P 22 of the receiving device 20 p + 1 at the end of the receiving device 20 p + 1 to 20 N on the second direction (left side in FIG. 4) are the second clock output of the transmitting device 10. Input the clock CLOCK (2) output from the terminal. And the first clock terminal P 21, P 22 of the receiving apparatus 20 p + 1 ⁇ 20 receiving device adjacent thereto a second clock terminal P 31, P 32 of the reception device 20 n of the N 20 n + 1 is not connected to each other The receiving devices 20 p + 1 to 20 N are connected in cascade with respect to the clock CLOCK (2).
- the common clock CLOCK (1) is supplied from the transmission device 10 to the reception devices 20 1 to 20 p , and the transmission device 10 receives the reception devices 20 p + 1 to 20 p. Since the common clock CLOCK (2) is supplied to N , the number of wiring lines for clock transmission between the transmission device 10 and the reception devices 20 1 to 20 N is reduced. In addition, since a clock input to a certain receiving device 20 n is buffered and output and provided to the adjacent receiving device 20 n ⁇ 1 or receiving device 20 n + 1 , the waveform deterioration of the clock is suppressed, and the clock frequency is increased. The bit rate of data transmission can be improved.
- the wiring layers 40, 50, 60 between them are formed of conductive layers.
- An inexpensive product having a small number of layers can be used.
- the wiring of the clock CLOCK (1) can be shortened. The frequency can be increased and the bit rate of data transmission can be improved.
- the receiver 20 n shown in this figure includes a data input buffer 21, a first clock input buffer 22 1 , a second clock input buffer 22 2 , a first clock output buffer 23 1 , a second clock output buffer 23 2 , a sampler unit. 24 and a decoder unit 25.
- a first clock input buffer 22 of the input terminal and the second clock output buffer 23 and second output terminal is connected to the first clock terminal P 21, P 22.
- Second clock input buffer 22 and second input terminals and the first clock output buffer 23 1 of the output terminal is connected to the second clock terminal P 31, P 32.
- a first clock input buffer 22 first output terminal, a first clock output buffer 23 of the input terminal, a second clock input buffer 22 and second output terminals and a second clock output buffer 23 and second input terminals are connected to each other .
- the first clock input buffer 22 1 and the first clock output buffer 23 1 are in an operable state when the SEL signal input to the terminal P 0 is at a high level, and are stopped when the SEL signal is at a low level. Become. Second clock input buffer 22 2 and the second clock output buffer 23 2 is ready for operation when the SEL signal input to the terminal P 0 is at a low level, and the stopped state when the SEL signal is at a high level Become.
- the receiving device 20 n configured as described above includes any one of the first clock input buffer 22 1 and the first clock output buffer 23 1 , the second clock input buffer 22 2, and the second clock output buffer 23 2.
- the receiving device 20 n is used as the receiving devices 20 p + 1 to 20 N in FIG. 4 when the SEL signal is at a high level, while the SEL signal is selectively operated. When the signal is at a low level, it is used as the receiving devices 20 1 to 20 p in FIG.
- FIG. 6 is a diagram illustrating a configuration of a transmission / reception system 2C including the transmission device 10 and the N reception devices 20 1 to 20 N.
- the configuration of the transmission / reception system 2C shown in FIG. 6 is different in that data is transmitted from each reception device 20n to the transmission device 10. This is different in that an external terminal for transmitting and receiving the data is provided in the transmitting device 10 and each receiving device 20 n .
- FIG. 6 it is not shown for the wiring board and the cable between the transmitter 10 and the receiver device 20 n.
- Each reception device 20 n further comprises a transmission unit 26, a first data terminal P 41 and the second data terminal P 42.
- the output end of the transmission unit 26 is connected to both the first data terminal P 41 and the second data terminal P 42 .
- the transmission unit 26 of each reception device 20 n receives information on the reception state of data or clock in the reception device 20 n (for example, data sampled by the sampler unit 24, a phase difference between the data and the clock, an amplitude of the data). Output, data or clock duty).
- the data input terminals P 11 and P 12 , the first clock terminals P 21 and P 22, and the second clock terminals P 31 and P 32 are arranged between the first data terminal P 41 and the second data terminal P 42. Yes.
- the transmitting device 10 includes a data output terminal that outputs data DATA (n) individually to each receiving device 20 n .
- the transmitting device 10 outputs a first clock CLOCK (1) to the p receiving devices 20 1 to 20 p arranged in succession among the N receiving devices 20 1 to 20 N.
- An output terminal is provided.
- the transmission device 10 further includes a data input terminal for inputting data output from the transmission unit 26 of each of the reception devices 20 1 to 20 p. Based on the data input to the data input terminal, the transmission device 10 receives data.
- the necessary adjustments eg, adjustment of phase difference between data and clock, adjustment of magnitude of data, duty of data or clock, etc. to improve the reception state of data or clock in each of devices 20 1 to 20 p Adjustment).
- the data output terminals corresponding to N reception devices 20 1 ⁇ 20 N, respectively, are arranged in the same order as the arrangement order of the N reception devices 20 1 ⁇ 20 N.
- the first clock output terminal that outputs the clock CLOCK (1) is connected to another receiving device on the first direction (left side in FIG. 6) side of the entire data output terminal corresponding to each of the receiving devices 20 1 to 20 p .
- Data input terminal for inputting data output from the receiving apparatus 20 1 ⁇ 20 p, respectively, either for the entire and the first clock output terminal of the data output terminals corresponding to the receiving apparatus 20 1 ⁇ 20 p respectively Is arranged on the left side (the left side in FIG. 6).
- a second data terminal P 42 of the reception device 20 n of the receiving apparatus 20 1 ⁇ 20 p and the first data terminal P 41 of the reception apparatus 20 n + 1 adjacent thereto are connected to each other, each reception device 20 n
- the receiving devices 20 1 to 20 p are connected in cascade with respect to the data output from the transmitting unit 26.
- the output data is output to the transmission device 10.
- the same effects as in the case of the transmission / reception system 2A shown in FIG. 2 can be obtained.
- the necessary adjustments are carried out in the transmitting apparatus 10 on the basis of the data transmitted to the transmission device 10 from the receiving device 20 n, at each reception device 20 n The reception state of data or clock is improved.
- FIG. 7 is a diagram illustrating a configuration of a transmission / reception system 2D including the transmission device 10 and the N reception devices 20 1 to 20 N.
- FIG. 7 reception system 2D of the configuration shown in differs in terms of order of arrangement of the external terminals in the transmitter 10 and the receiver device 20 n. Also in FIG. 7, illustration is omitted for the wiring board and the cable between the transmitter 10 and the receiver device 20 n.
- the first data terminal P 41 is disposed between the first clock terminal P 21, P 22 and a data input terminal P 11, P 12.
- the second data terminal P 42 is disposed between the second clock terminals P 31 , P 32 and the data input terminals P 11 , P 12 in the transmission device 10, and each of the reception devices 20 1 to 20 p.
- the data input terminal for inputting the data output from is arranged between the entire data output terminal corresponding to each of the receiving devices 20 1 to 20 p and the first clock output terminal. Alternatively, this data input terminal may be arranged on the opposite side to the first clock output terminal with respect to the entire data output terminal corresponding to each of the receiving devices 20 1 to 20 p .
- a second data terminal P 42 of the reception device 20 n of the receiving apparatus 20 1 ⁇ 20 p and the first data terminal P 41 of the reception apparatus 20 n + 1 adjacent thereto are connected to each other, each reception device 20 n
- the receiving devices 20 1 to 20 p are connected in cascade with respect to the data output from the transmitting unit 26.
- the output data is output to the transmission device 10.
- FIG. 8 is a diagram illustrating a configuration of the transmission device 10 included in the transmission / reception system 2C or the transmission / reception system 2D.
- the transmission device 10 includes a data transmission unit 11, a clock transmission unit 12, an encoder unit 13, a reception unit 14, a control unit 15, and a clock generation unit 16.
- the transmitting device 10 includes N data transmitting units 11 corresponding to the N receiving devices 20 1 to 20 N , but only one data transmitting unit 11 is shown in the figure. In this figure, the order of arrangement of the external terminals of the transmission apparatus 10 is not a problem.
- Encoder unit 13 of the transmitting apparatus 10 is controlled by the control unit 15, together with providing data to be transmitted to the reception apparatus 20 n to the data transmission unit 11, the to be transmitted to the receiving apparatus 20 n clock to the clock transmission section 12 give.
- the data transmission unit 11 transmits data to the reception device 20 n and includes a buffer 111, a flip-flop 112, and a phase shift unit 113.
- the phase shift unit 113 receives the reference clock output from the clock generation unit 16, changes the phase of the reference clock by the phase shift amount instructed by the control unit 15, and outputs it to the flip-flop 112.
- the flip-flop 112 latches the data output from the encoder unit 13 at a timing indicated by the clock output from the phase shift unit 113, and outputs the latched data to the buffer 111.
- the buffer 111 adjusts the amplitude and offset instructed by the control unit 15 for the data output from the flip-flop 112, and transmits the adjusted data to the receiving device 20n .
- the clock transmission unit 12 transmits a clock to the reception device 20 n and includes a buffer 121 and a flip-flop 122.
- the flip-flop 122 latches the clock output from the encoder unit 13 at a timing indicated by the reference clock output from the clock generation unit 16, and outputs the latched data to the buffer 121.
- the buffer 121 adjusts the offset instructed by the control unit 15 for the data output from the flip-flop 112, and transmits the adjusted data as a clock to the receiving device 20n .
- Receiving unit 14 receives came from the transmitting unit 26 of the reception apparatus 20 n transmitted via the first data terminal P 41 or the second data terminal P 42 data.
- the control unit 15 controls data transmission by the data transmission unit 11 and clock transmission by the clock transmission unit 12. Specifically, the control unit 15 controls data provided from the encoder unit 13 to the data transmission unit 11.
- the control unit 15 controls the data and the clock transmitted by the data transmission unit 11 by controlling the phase shift amount of the reference clock in the phase shift unit 113 of the data transmission unit 11 based on the data received by the reception unit 14.
- the phase with the clock transmitted by the transmission unit 12 is adjusted. Further, the control unit 15 adjusts the amplitude and duty of the data transmitted from the buffer 111 of the data transmission unit 11 based on the data received by the reception unit 14 and is transmitted from the buffer 121 of the clock transmission unit 12. Adjust the clock duty.
- the control unit 14 since the one receiving device to the adjacent receiver device clock is gradually transmitted, since the delay of the clock is increased at a later stage of the receiving device, the control unit 14, the reception device 20 n Adjust the phase between the data sent to and the common clock. In addition to this, the control unit 14 preferably controls the amplitude or duty of the data or the duty of the clock.
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Abstract
Description
2A~2D 送受信システム
10 送信装置
11 データ送信部
12 クロック送信部
13 エンコーダ部
14 受信部
15 制御部
16 クロック生成部
20 受信装置
21 データ入力バッファ
221 第1クロック入力バッファ
222 第2クロック入力バッファ
231 第1クロック出力バッファ
232 第2クロック出力バッファ
24 サンプラ部
25 デコーダ部
26 送信部26
Claims (16)
- 1次元状に配列されたN個の受信装置それぞれに対してクロックおよびデータを送信する送信装置であって、
前記N個の受信装置それぞれに対して個別にデータを出力するデータ出力端子と、前記N個の受信装置のうちの連続して配列されたp個の受信装置に対して共通のクロックを出力する第1クロック出力端子とを備え、
前記N個の受信装置それぞれに対応するデータ出力端子が、前記N個の受信装置の配列順と同じ順に配列され、
前記第1クロック出力端子が、前記p個の受信装置それぞれに対応するデータ出力端子の全体の第1方向側に、前記N個の受信装置のうちの前記p個の受信装置以外の他の受信装置に対応するデータ出力端子を間に挟むことなく配置されている、
ことを特徴とする送信装置(ただし、N,pは2以上の整数)。 - 前記N個の受信装置のうちの前記p個の受信装置以外の連続して配列されたq個の受信装置に対して共通のクロックを出力する第2クロック出力端子を更に備え、
前記第2クロック出力端子が、前記q個の受信装置それぞれに対応するデータ出力端子の全体の第2方向側に、前記N個の受信装置のうちの前記q個の受信装置以外の他の受信装置に対応するデータ出力端子を間に挟むことなく配置されていて、
前記第1クロック出力端子および前記第2クロック出力端子が、前記p個の受信装置それぞれに対応するデータ出力端子の全体と、前記q個の受信装置それぞれに対応するデータ出力端子の全体と、の間に配置されている、
ことを特徴とする請求項1に記載の送信装置(ただし、qは2以上の整数)。 - 前記p個の受信装置それぞれから出力されるデータを入力するデータ入力端子を更に備え、
前記データ入力端子が、前記p個の受信装置それぞれに対応するデータ出力端子の全体および前記第1クロック出力端に対して何れかの側に配置されている、
ことを特徴とする請求項1に記載の送信装置。 - 前記p個の受信装置それぞれから出力されるデータを入力するデータ入力端子を更に備え、
前記データ入力端子が、前記p個の受信装置それぞれに対応するデータ出力端子の全体と前記第1クロック出力端子との間、または、前記p個の受信装置それぞれに対応するデータ出力端子の全体に対して前記第1クロック出力端子とは反対側に配置されている、
ことを特徴とする請求項1に記載の送信装置。 - 前記p個の受信装置それぞれに対応するデータ出力端子から出力されるデータと前記第1クロック出力端子から出力されるクロックとの間の位相差を調整する制御部を備える、ことを特徴とする請求項1に記載の送信装置。
- 外部からデータを入力するデータ入力端子と、外部からクロックを入力する第1クロック端子と、前記第1クロック端子に入力されたクロックをバッファリングして出力する第1バッファ回路と、前記第1バッファ回路から出力されたクロックを外部へ出力する第2クロック端子とを備え、
前記データ入力端子が前記第1クロック端子と前記第2クロック端子との間に配置されている、
ことを特徴とする受信装置。 - 前記第2クロック端子に入力されたクロックをバッファリングして前記第1クロック端子から出力させる第2バッファ回路と、前記第1バッファ回路および前記第2バッファ回路のうちの何れか一方を選択的に動作させる選択手段と、を更に備えることを特徴とする請求項6に記載の受信装置。
- 外部からデータを入力し又はデータを外部へ出力する第1データ端子および第2データ端子を更に備え、
前記データ入力端子,前記第1クロック端子および前記第2クロック端子が、前記第1データ端子と前記第2データ端子との間に配置されている、
ことを特徴とする請求項6に記載の受信装置。 - 外部からデータを入力し又はデータを外部へ出力する第1データ端子および第2データ端子を更に備え、
前記第1データ端子が前記第1クロック端子と前記データ入力端子との間に配置され、
前記第2データ端子が前記第2クロック端子と前記データ入力端子との間に配置されている、
ことを特徴とする請求項6に記載の受信装置。 - 前記データ入力端子に入力されたデータと前記クロック入力端子に入力されたクロックとの間の位相差に関するデータを前記第1データ端子または前記第2データ端子から出力する、
ことを特徴とする請求項8または9に記載の受信装置。 - 請求項1に記載の送信装置と、1次元状に配列されたN個の請求項6に記載の受信装置と、を備え、
前記N個の受信装置それぞれの前記データ入力端子が、前記送信装置において前記N個の受信装置の配列順と同じ順に配列されたデータ出力端子のうち対応する前記データ出力端子から出力されたデータを入力し、
前記N個の受信装置のうちの連続して配列されたp個の受信装置それぞれにおける前記データ入力端子に対する前記第1クロック端子の配置が、前記送信装置において前記p個の受信装置それぞれに対応する前記データ出力端子に対する前記第1クロック出力端子の配置と同じ第1方向側であり、
前記p個の受信装置のうちの前記第1方向側の端にある受信装置の前記第1クロック端子が、前記送信装置の前記第1クロック出力端子から出力されたクロックを入力し、
前記p個の受信装置のうちの受信装置の前記第2クロック端子とこれに隣接する受信装置の前記第1クロック端子とが互いに接続されて、クロックに関して前記p個の受信装置が縦列接続されている、
ことを特徴とする送受信システム。 - 請求項2に記載の送信装置と、1次元状に配列されたN個の請求項7に記載の受信装置と、を備え、
前記N個の受信装置それぞれの前記データ入力端子が、前記送信装置において前記N個の受信装置の配列順と同じ順に配列されたデータ出力端子のうち対応する前記データ出力端子から出力されたデータを入力し、
前記N個の受信装置のうちの連続して配列されたp個の受信装置それぞれにおける前記データ入力端子に対する前記第1クロック端子の配置が、前記送信装置において前記p個の受信装置それぞれに対応する前記データ出力端子に対する前記第1クロック出力端子の配置と同じ第1方向側であり、
前記p個の受信装置のうちの前記第1方向側の端にある受信装置の前記第1クロック端子が、前記送信装置の前記第1クロック出力端子から出力されたクロックを入力し、
前記p個の受信装置のうちの受信装置の前記第2クロック端子とこれに隣接する受信装置の前記第1クロック端子とが互いに接続されて、クロックに関して前記p個の受信装置が縦列接続されていて、
前記N個の受信装置のうちの前記p個の受信装置以外の連続して配列されたq個の受信装置それぞれにおける前記データ入力端子に対する前記第2クロック端子の配置が、前記送信装置において前記q個の受信装置それぞれに対応する前記データ出力端子に対する前記第2クロック出力端子の配置と同じ第2方向側であり、
前記q個の受信装置のうちの前記第2方向側の端にある受信装置の前記第2クロック端子が、前記送信装置の前記第2クロック出力端子から出力されたクロックを入力し、
前記q個の受信装置のうちの受信装置の前記第1クロック端子とこれに隣接する受信装置の前記第2クロック端子とが互いに接続されて、クロックに関して前記q個の受信装置が縦列接続されている、
ことを特徴とする送受信システム。 - 請求項3に記載の送信装置と、1次元状に配列されたN個の請求項8に記載の受信装置と、を備え、
前記N個の受信装置それぞれの前記データ入力端子が、前記送信装置において前記N個の受信装置の配列順と同じ順に配列されたデータ出力端子のうち対応する前記データ出力端子から出力されたデータを入力し、
前記N個の受信装置のうちの連続して配列されたp個の受信装置それぞれにおける前記データ入力端子に対する前記第1クロック端子の配置が、前記送信装置において前記p個の受信装置それぞれに対応する前記データ出力端子に対する前記第1クロック出力端子の配置と同じ第1方向側であり、
前記p個の受信装置のうちの前記第1方向側の端にある受信装置の前記第1クロック端子が、前記送信装置の前記第1クロック出力端子から出力されたクロックを入力し、
前記p個の受信装置のうちの受信装置の前記第2クロック端子とこれに隣接する受信装置の前記第1クロック端子とが互いに接続されて、クロックに関して前記p個の受信装置が縦列接続され、
前記p個の受信装置のうちの受信装置の前記第2データ端子とこれに隣接する受信装置の前記第1データ端子とが互いに接続されている、
ことを特徴とする送受信システム。 - 請求項4に記載の送信装置と、1次元状に配列されたN個の請求項9に記載の受信装置と、を備え、
前記N個の受信装置それぞれの前記データ入力端子が、前記送信装置において前記N個の受信装置の配列順と同じ順に配列されたデータ出力端子のうち対応する前記データ出力端子から出力されたデータを入力し、
前記N個の受信装置のうちの連続して配列されたp個の受信装置それぞれにおける前記データ入力端子に対する前記第1クロック端子の配置が、前記送信装置において前記p個の受信装置それぞれに対応する前記データ出力端子に対する前記第1クロック出力端子の配置と同じ第1方向側であり、
前記p個の受信装置のうちの前記第1方向側の端にある受信装置の前記第1クロック端子が、前記送信装置の前記第1クロック出力端子から出力されたクロックを入力し、
前記p個の受信装置のうちの受信装置の前記第2クロック端子とこれに隣接する受信装置の前記第1クロック端子とが互いに接続されて、クロックに関して前記p個の受信装置が縦列接続され、
前記p個の受信装置のうちの受信装置の前記第2データ端子とこれに隣接する受信装置の前記第1データ端子とが互いに接続されている、
ことを特徴とする送受信システム。 - 請求項5に記載の送信装置と、1次元状に配列されたN個の請求項10に記載の受信装置と、を備え、
前記N個の受信装置それぞれの前記データ入力端子が、前記送信装置において前記N個の受信装置の配列順と同じ順に配列されたデータ出力端子のうち対応する前記データ出力端子から出力されたデータを入力し、
前記N個の受信装置のうちの連続して配列されたp個の受信装置それぞれにおける前記データ入力端子に対する前記第1クロック端子の配置が、前記送信装置において前記p個の受信装置それぞれに対応する前記データ出力端子に対する前記第1クロック出力端子の配置と同じ第1方向側であり、
前記p個の受信装置のうちの前記第1方向側の端にある受信装置の前記第1クロック端子が、前記送信装置の前記第1クロック出力端子から出力されたクロックを入力し、
前記p個の受信装置のうちの受信装置の前記第2クロック端子とこれに隣接する受信装置の前記第1クロック端子とが互いに接続されて、クロックに関して前記p個の受信装置が縦列接続され、
前記p個の受信装置のうちの受信装置の前記第2データ端子とこれに隣接する受信装置の前記第1データ端子とが互いに接続されていて、
前記送信装置の前記制御部が、前記p個の受信装置それぞれの前記第1データ端子または前記第2データ端子から出力された位相差に関するデータに基づいて、前記p個の受信装置それぞれに対応するデータ出力端子から出力されるデータと前記第1クロック出力端子から出力されるクロックとの間の位相差を調整する、
ことを特徴とする送受信システム。 - 請求項11~15の何れか1項に記載の送受信システムと、
前記送受信システムに含まれるN個の受信装置それぞれにより受信されたデータに基づいて画像を表示する画像表示部と、
を備えることを特徴とする画像表示システム。
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CN201080058169.2A CN102714637B (zh) | 2009-12-21 | 2010-12-13 | 发送装置、接收装置、收发系统以及图像显示系统 |
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- 2010-12-13 US US13/517,462 patent/US9418583B2/en active Active
- 2010-12-13 EP EP10839219.2A patent/EP2518956B1/en not_active Not-in-force
- 2010-12-13 KR KR1020127014803A patent/KR101471728B1/ko active IP Right Grant
- 2010-12-13 CN CN201080058169.2A patent/CN102714637B/zh not_active Expired - Fee Related
- 2010-12-16 TW TW099144234A patent/TWI566563B/zh not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
---|---|
US20120306845A1 (en) | 2012-12-06 |
CN102714637B (zh) | 2014-09-17 |
KR20120089741A (ko) | 2012-08-13 |
KR101471728B1 (ko) | 2014-12-10 |
JP5753656B2 (ja) | 2015-07-22 |
CN102714637A (zh) | 2012-10-03 |
EP2518956A4 (en) | 2013-08-14 |
US9418583B2 (en) | 2016-08-16 |
TW201143338A (en) | 2011-12-01 |
JP2011128535A (ja) | 2011-06-30 |
TWI566563B (zh) | 2017-01-11 |
EP2518956A1 (en) | 2012-10-31 |
EP2518956B1 (en) | 2017-02-08 |
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