KR20080093599A - Method and device for processing image - Google Patents

Abstract

A method and an apparatus for processing an image are provided to stabilize the reception and process of an original image signal, which is outputted from an image sensor through a plurality of channels. A data input unit(321) is connected to an image sensor through a plurality of data channels. The data input unit receives pixel data from the image sensor through respective data channels. A memory(323) stores the pixel data. An input controller(325) reads the stored pixel data, and then generates and outputs line data by a predetermined method. An image signal processor(327) is connected to the input controller through one data channel. The image signal processor receives the line data from the input controller to convert the line data into corresponding image data. The line data are pixel data combined correspondingly to pixel components constituting optional pixel rows of a predetermined bayer pattern by using the read pixel data.

Description

Method and device for processing image

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram schematically showing a configuration of a general imaging device.

2 is a diagram illustrating a typical Bayer mosaic filter pattern.

3 is a block diagram of an image processing apparatus according to an embodiment of the present invention.

4 is a block diagram of a CMOS image sensor according to a scanning method.

5 is a diagram illustrating a raw image signal output from a conventional image sensor.

6 is a diagram illustrating a raw image signal output from an image sensor according to an embodiment of the present invention.

7 is a flowchart illustrating a method of processing image data by an image processing apparatus according to an embodiment of the present invention.

8 is a diagram illustrating a connection between an image sensor and an image processor according to another exemplary embodiment of the present disclosure.

<Explanation of symbols for main parts of the drawings>

310: image sensor

320: image processing unit

321: data input unit

323: memory

325: input controller

327: image signal processor

The present invention relates to data processing, and more particularly, to a data processing apparatus and a method for outputting and processing data through a plurality of data channels.

In recent years, small and thin image pickup devices are mounted in small and thin portable terminals such as mobile phones and PDAs (Personal Digital Assistants), whereby the portable terminals can function as image pickup devices. The user can transmit not only voice information but also image information to a remote location using the portable terminal. The imaging device is provided not only in a mobile phone or a PDA but also in a portable terminal such as an MP3 player so that various devices can hold external images as electronic data.

Generally, solid-state imaging devices, such as a charge coupled device (CCD) type image sensor and a complementary metal-0xide semiconductor (CMOS) type image sensor, are used for such an imaging device.

FIG. 1 is a diagram schematically illustrating a configuration of a general imaging device, and FIG. 2 is a diagram illustrating a general Bayer mosaic filter pattern.

As illustrated in FIG. 1, an image pickup device that converts an external image into electrical data and displays the same on the display unit 150 includes an image sensor 110, an image signal processor 120 (ISP), and a backend chip ( 130, a back-end chip, a baseband chip 140, and a display unit 150. In addition, the imaging apparatus may further include a memory for storing the converted electrical data, an AD converter for converting an analog signal into a digital signal, and the like.

The image sensor 110 generally includes a Bayer pattern, and outputs raw data corresponding to the amount of light input through the lens for each unit pixel. In order to detect the color of the image exposed to the image sensor 110, a pixel of the image sensor 110 to each color filter absorbing the light wavelength of all colors except the color of the color filter. It is covered.

That is, a general method of obtaining color information from the image sensor 110 is to arrange a color filter array (CFA) on the pixels of the image sensor 110. The most common form of color filter array is the Bayer Mosaic filter shown in FIG. The Bayer mosaic filter has a checkerboard like structure and consists of alternating rows of red (R), green (G) and blue (B), green (G) filters. The red and green filters are offset from each other so that the two green filters do not share the edge between adjacent rows and columns. In order to obtain complete color information of each pixel, interpolation based on color intensity of surrounding pixels is required.

The image signal processor 120 converts an electrical signal (raw data) input from the image sensor 110 into a YUV value, and inputs the converted YUV value to the back end chip 130. The YUV method focuses on the fact that the human eye is more sensitive to brightness than color, and the color is divided into Y component, which is luminance, and U and V, which are chroma. Since the Y component is sensitive to error, we code more bits than the color components U and V. A typical Y: U: V ratio is 4: 2: 2.

The image signal processor 120 sequentially stores the converted YUV values in the FIFO so that the back end chip 130 may receive the corresponding information.

The back end chip 130 converts the input YUV value into JPEG or BMP by using a predetermined encoding method and stores the converted YUV value in a memory (not shown), or decodes the encoded image stored in the memory and displays it on the display unit 150. The back end chip 130 may also perform functions such as enlargement, reduction, and rotation of an image. Of course, as shown in FIG. 1, the baseband chip 140 may receive decoded data from the backend chip 130 and display the decoded data on the display unit 150.

The baseband chip 140 performs a function of controlling the overall operation of the imaging device. For example, when an imaging command is input from a user through a key input unit (not shown), the baseband chip 140 transmits an image generation command to the backend chip 130 to the external image to which the backend chip 130 is input. It is also possible to generate corresponding encoded data.

The display unit 150 displays decoded data provided by the control of the back end chip 130 or the baseband chip 140.

The image data signal and the synchronization signal (ie, the clock signal) output through the image signal processor 120 in the image capturing apparatus are related to whether the effective pixel is determined. That is, an image to be inputted and outputted during a valid period of a synchronization signal (clock signal) between the image signal processor 120 and the post-processing processor (for example, the back end chip 130) that processes the image data input from the image signal processor 120. The number and order of data are predetermined. Therefore, when the relationship between the image data output from the image signal processor 120 and the synchronization signal is broken, the post-processing processor processes a completely different signal.

In general, the image sensor 110 outputs the raw image signal generated through one data channel to the image signal processor 120. Therefore, when the image sensor 110 outputs a raw image signal through a plurality of data channels, the image signal processor 120 connected to the rear stage must be changed to receive a raw image signal input through a plurality of data channels. There is a problem.

Accordingly, an aspect of the present invention is to provide an image processing method and apparatus capable of receiving and processing a raw image signal output through a plurality of data channels in an image sensor.

In addition, the present invention is to provide an image processing method and apparatus capable of processing the raw image signal output through a plurality of channels without changing the post-processing processor connected to the rear end of the image sensor.

Other objects of the present invention will be easily understood through the description of the following examples.

In order to achieve the above object, according to an aspect of the present invention, an image processor chip and an apparatus which is connected to an image sensor through a plurality of data channels to receive and process each pixel data through each data channel Is provided.

According to an embodiment of the present invention, a data input unit connected to an image sensor through a plurality of data channels and receiving pixel data from the image sensor through each data channel; A memory for storing the pixel data; An input controller that reads the stored pixel data to generate and output line data by a predetermined method; And an image signal processor connected to the input controller through one data channel and receiving the line data from the input controller and converting the line data into image data corresponding to a predetermined format.

The line data may be pixel data combined to correspond to pixel elements constituting an arbitrary pixel row of a predetermined Bayer pattern using the read pixel data.

The memory may consist of n (random natural numbers) line memories.

When the image sensor outputs pixel data corresponding to a specific pixel element of an arbitrary pixel row through each data line of each data channel, the data input unit is configured to output the pixel row through the first data line of each data channel. Receive pixel data corresponding to the first pixel element of the first pixel element and write the pixel data corresponding to the second pixel element of the pixel row through the second data line to write to the second line memory. Can be.

The input controller may read out pixel data written in the first line memory and the second line memory to generate and output the line data.

When the image sensor outputs pixel data corresponding to an arbitrary pixel row through each data line of each data channel, the data input unit writes pixel data input through each data channel to each line memory. The input controller may read and output pixel data in line memory units.

According to another embodiment of the invention, the image sensor for outputting pixel data corresponding to the subject; A data input unit connected to the image sensor through a plurality of data channels, connected to the image sensor through a plurality of data channels, and receiving one or more pixel data from the image sensor through the plurality of data channels; A memory for storing the pixel data; An input controller that reads the at least one pixel data and generates and outputs line data in a predetermined format; And an image signal processor connected to the input controller through one data channel and receiving the line data through the data channel and converting the line data into image data corresponding to a predetermined format. .

The line data may be pixel data combined to correspond to pixel elements forming an arbitrary pixel row of a predetermined Bayer pattern by using the read pixel data.

According to another aspect of the present invention, a method is provided by an image processor chip coupled to an image sensor through a plurality of data channels to process data.

According to an embodiment of the present invention, a method of processing data in an image processor chip, the method comprising: receiving and storing pixel data from an image sensor through a plurality of data channels; Reading the stored pixel data, generating line data according to a predetermined method, and outputting the same through one data channel; And converting the line data into image data corresponding to a predetermined format.

The line data may be pixel data combined to correspond to pixel elements forming an arbitrary pixel row of a predetermined Bayer pattern by using the read pixel data.

Receiving and storing pixel data from an image sensor through a plurality of data channels includes: receiving and storing pixel data corresponding to first pixel elements of an arbitrary pixel row through a first data line of each data channel; And receiving and storing pixel data corresponding to a second pixel element of the pixel row through a second data line.

The reading of the stored pixel data and generating and outputting line data according to a predetermined method through one data channel may include: reading pixel data corresponding to the stored first pixel element; Reading pixel data corresponding to the stored second pixel element; And generating and outputting the line data by merging the read pixel data alternately according to a predetermined method.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention. Hereinafter, the same reference numerals are used for the same components in the drawings, and duplicate descriptions of the same components are omitted. In addition, in describing the present invention, if it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

3 is a block diagram of an image processing apparatus according to an embodiment of the present invention, FIG. 4 is a block diagram of a CMOS image sensor according to a scan method, and FIG. 5 is a diagram illustrating a raw image signal output from a conventional image sensor. 6 is a diagram illustrating a raw image signal output from an image sensor according to an embodiment of the present invention, and FIG. 8 illustrates a connection between an image sensor and an image processor according to another embodiment of the present invention. One drawing.

Referring to FIG. 3, the image processing apparatus 310 according to the present invention includes an image sensor 310 and an image processor 320. The image processor 320 described below may be formed as one chip.

The image sensor 310 converts a signal of an optical subject incident through the lens into an electrical signal (hereinafter, a signal converted according to the subject will be referred to as "pixel data" for convenience of understanding and explanation. ) Outputs to the image processor 320.

In addition, as described above, the image sensor 310 includes a pixel array in which a plurality of unit pixels are arranged along a row or a column, such as a CCD or a CMOS sensor, and each unit pixel is a light of a subject. It includes a photoelectric conversion element (for example, a photodiode) for converting the signal into an electrical signal and output.

First, in order to facilitate the understanding and explanation, the internal configuration of the image sensor 310 will be briefly described with reference to FIG. 4.

As shown in FIG. 4, the image sensor 310 includes a pixel array 410, a row decoder 420, a CDS and Correlated Double Sampling & Analog Digital Converter (ADC) 430, and a column decoder 440. .

In the pixel array 410, a row decoder 420 to designate a row address is disposed in one direction of the pixel array 410, receives pixel data in a direction perpendicular thereto, and uses a column decoder to designate column addresses of pixels. 440 is disposed.

The row decoder 420 includes a plurality of row decoder cells including a plurality of gates. The row decoder cell receives an input signal through an address lead line, a transmission signal lead line, a selection signal lead line, and a reset signal lead line, and receives a reset signal lead line. A reset gate signal output unit for outputting a reset gate signal generated according to an address signal incoming through a reset signal and an address signal lead-in line, a selection signal incoming through a selection signal lead-in line, and an address signal incoming through an address signal lead-in line The output signal is output through a selection gate signal output unit for outputting a selection gate signal generated according to the transmission signal output line and a transmission signal input through the transmission signal lead line.

More specifically, in the process of extracting data from the image sensor 310, after selecting a specific pixel row in the row decoder 420 and extracting data for each pixel in the selected row in the column decoder 440, Each pixel data is amplified and output. Data is extracted in this manner for all pixels of the pixel array 410.

The pixel data extracted as described above is analog data and is converted into digital data by the CDS and ADC unit 430, sampled, and output.

That is, the image sensor 310 generates pixel data and synchronization signals synchronized with the pixel data (for example, a clock signal PCLK, a vertical synchronization signal VSYNC, and a valid data enable signal HREF). Output to the image processing unit 320.

Here, the clock signal PCLK is a synchronization signal for acquiring pixel data output from the image sensor 210, and the vertical synchronization signal VSYNC is a synchronization signal for identifying data according to each frame. The valid data enable signal HREF is a synchronization signal for identifying data output during each valid period (ie, each line).

Referring back to FIG. 3, the image sensor 310 outputs a plurality of data channels (eg, the first data channel 330 and the second data channel 335) for outputting pixel data and the synchronization signals. Image through a plurality of signal lines (e.g., a first clock signal line for outputting a clock signal, a second clock signal line for outputting a vertical synchronization signal, and a third clock signal line for outputting a valid data enable signal) It is connected to the processing unit 320. That is, the image sensor 310 outputs one or more pixel data to the image processor 320 through a plurality of data channels (ie, the first data channel 330 and the second data channel 335). 8 illustrates an example in which the image sensor 310 and the image processor 320 are connected through three or more data channels.

For example, the image sensor 310 includes the pixel array 410 as illustrated in FIG. 4, and assuming two data channels, the image sensor 310 is configured to be connected through the first data line of the first data channel 330. Pixel data corresponding to the R pixel element of one pixel row may be output to the image processor 320. The image sensor 310 may output pixel data corresponding to the G pixel elements of the first pixel row to the image processor 320 through the second data line of the first data channel 330. In addition, the image sensor 310 may output pixel data corresponding to the G pixel element of the second pixel row to the image processor 320 through the first data line of the second data channel 335, and the second data. The pixel data corresponding to the B pixel element of the second pixel row may be output to the image processor 320 through the second data line of the channel 335. 6 illustrates an example in which the image sensor 310 outputs pixel data corresponding to a specific pixel element of an arbitrary pixel row through each data line of each data channel.

As another example, the image sensor 310 may output pixel data corresponding to an arbitrary pixel row to the image processor 320 through a data channel, respectively.

As another example, the image sensor 310 may include pixel data corresponding to an R pixel element of a first pixel row and a pixel corresponding to a B pixel element of a second pixel row via a first data line of a first data channel. You can output the data. The pixel data corresponding to the first pixel row and the second pixel row may be output through the second data line of the first data channel.

As another example, the image sensor 310 outputs pixel data corresponding to the R pixel elements of the first pixel row and the third pixel row through the first data channel, and the second pixel through the second data channel. Output pixel data corresponding to B pixel elements of the row and fourth pixel rows, and output pixel data corresponding to G pixel elements of the first to fourth pixel rows through the third and fourth data channels. It may be.

More specifically, the image sensor 310 outputs pixel data corresponding to the R pixel element of the first pixel row through the first data line of the first data channel, and R of the third pixel row through the second data line. Output pixel data corresponding to the pixel element, output pixel data corresponding to the B pixel element of the second pixel row through the first data line of the second data channel, and output the pixel data of the fourth pixel row through the second data line The pixel data corresponding to the B pixel element may be output. In addition, the image sensor 310 outputs pixel data corresponding to the G pixel element of the first pixel row through the first data line of the third data channel, and the G pixel element of the second pixel row through the second data line. Output pixel data corresponding to the pixel data corresponding to the G pixel element of the third pixel row through the first data line of the fourth data channel, and G pixel of the fourth pixel row through the second data line. Output pixel data corresponding to the element.

For convenience of understanding, a conventional image sensor will briefly describe a method of outputting pixel data. The conventional image sensor is connected to an image processor (not shown) through one data channel. As a result, the image sensor outputs pixel data corresponding to the pixel rows of the pixel array to the image processor through one data channel.

Referring back to FIG. 3, the image processor 320 synchronizes a plurality of data channels (eg, the first data channel 330 and the second data channel 335) to receive pixel data and the corresponding pixel data. It is connected to the image sensor 310 through the synchronization signal lines for receiving the received synchronization signals. That is, the image processor 320 receives the pixel data from the image sensor 310 through a plurality of data channels and converts the pixel data into image data corresponding to a predetermined format.

As illustrated in FIG. 3, the image processor 320 includes a data input unit 321, a memory 323, an input controller 325, and an image signal processor 330.

The data input unit 321 receives pixel data and sync signals synchronized with the pixel data from the image sensor 310, and uses a plurality of data channels (ie, the first data channel 330 and the second sync signal). The pixel data input through the data channel 335 is acquired and stored in the memory 323. In the present specification, the image sensor 310 and the image processing unit 320 will be described by focusing on two data channels. However, it is natural that the image sensor 310 and the image processor 320 may be connected through two or more data channels to receive pixel data. In FIG. 8, the image sensor 310 and the data input unit 321 are connected through two or more data channels (ie, a first data channel 810a, a second data channel 810b,..., N-th data channel 810n0). Is illustrated.

As illustrated in FIG. 8, when the image sensor 310 and the data input unit 321 are connected through n data channels, the data input unit 321 corresponds to the first pixel row through the first data channel 810a. Receive pixel data corresponding to the second pixel row through the second data channel 810b, and receive pixel data corresponding to the nth pixel row through the nth data channel 810n. The memory 323 may be stored.

That is, the data input unit 321 may sequentially write pixel data input through each data line of each data channel to the memory 323.

For example, assuming that the memory 323 is composed of n line memories, the data input unit 321 stores pixel data input through each data line of each data channel to each line memory. Can record

The memory 323 stores pixel data input from the data input unit 321. The memory 323 may be composed of n line memories of any natural number, for example, any number of lines between 1 and 1 frame.

For example, assuming n line memories are included, certain pixel elements of any line of a particular frame may be stored sequentially in the first line memory, and other pixel elements of that line may be sequentially stored in the second line memory. Can be stored as. That is, pixel data corresponding to one line may be stored in two line memories. The pixel data output by the data input unit 321 may be overwritten and stored in the existing line memory. Here, it is obvious that the pre-stored data may be output to the image signal processor 327 under the control of the input controller 325 before being overwritten by the newly input pixel data.

The input controller 325 reads one or more pixel data recorded in the memory 323, generates line data according to a predetermined method, and outputs the line data to the image signal processor 327. That is, the input controller 325 converts the pixel data input through the plurality of data channels into a format that can be processed by the image signal processor 327 which will be described below.

Here, the predetermined method is a method of converting the pixel data output and stored through the plurality of data channels from the image sensor 310 into a format of pixel data that can be processed by the image signal processor 327. The recombination may correspond to a Bayer pattern corresponding to the pixel array 410 included in the 310.

In the present specification, "line data" is defined as pixel data recombined corresponding to pixel elements included in a pixel row of a Bayer pattern of the pixel array 410. Further, the pixel row is defined as each row of the pixel array 410, and the pixel element is defined as being each component constituting any row. For example, referring to FIG. 4, it can be seen that the first pixel row is composed of R pixel elements and G pixel elements alternately positioned.

As described above, in order for the input controller 325 to generate line data using pixel data randomly output through the plurality of data channels from the image sensor 310, the Bayer of the pixel array 410 included in the image sensor 310 is provided. Naturally, you can store information about the pattern.

In addition, since pixel data input through each data line of each data channel of the image sensor 310 is stored in the memory 323 in a predetermined order, the input controller 325 stores the pixel data stored in the memory 323. Information on which pixel element is located in which pixel row of the Bayer pattern corresponds to the position of is.

For example, the input controller 325 reads one or more pixel data input from the image sensor 310 through a plurality of data channels and stored in the memory 323 to correspond to the pixel elements of any pixel row of the Bayer pattern. The pixel data may be combined to generate line data and output to the image signal processor 327.

That is, the input controller 325 may read the pixel data input in an arbitrary format through the plurality of data channels and stored in the memory 323, and convert the pixel data into a format that may be processed by the image signal processor 327.

For example, the input controller 325 may read pixel data recorded in the memory 323, generate line data for each line unit to correspond to a predetermined Bayer pattern, and output the line data to the image signal processor 327. That is, suppose that R pixel elements of any particular pixel row are stored in the first line memory, and G pixel elements of the pixel row are stored in the second line memory. Since the image signal processor 327 receives and processes pixel data corresponding to a line unit of a specific pixel row, the input controller 325 reads pixel data of the first line memory and the second line memory to process the image signal processor 327. Generate and output the line data that can be input.

For example, the input controller 325 may generate line data by alternately reading and merging data recorded in the first line memory and the second line memory in pixel units.

The image signal processor 327 converts and outputs line data input from the input controller 325 according to a predetermined method. For example, the image signal processor 327 may convert line data into YUV data and output the converted YUV data. Hereinafter, for convenience of understanding and explanation, the data generated by image processing the line data input from the input controller 325 by a predetermined method will be referred to as "image data". do.

7 is a flowchart illustrating a method of processing image data by an image processing apparatus according to an exemplary embodiment. Hereinafter, the image processor 320 receives pixel data from the image sensor 310 through a plurality of data channels (that is, the first data channel 330 and the second data channel 335), respectively, and the image signal processor 327. Will be described in detail in the following description.

In operation 710, the image sensor 310 generates pixel data corresponding to a signal of an optical object and outputs the pixel data to the data input unit 321 through a plurality of data channels. The image sensor outputs synchronization signals synchronized with the corresponding pixel data to the data input unit 321 using the synchronization signal line.

For example, the image sensor 310 may retrieve pixel data corresponding to a particular pixel element (eg, “R pixel element”) of any pixel row of the pixel array 410 from the first data line of the first data channel. It can be output to the data input unit 321 through. In addition, the image sensor 310 outputs pixel data corresponding to other pixel elements (eg, "G pixel elements") of the corresponding pixel row to the data input unit 321 through the second data line of the first data channel. can do. Here, the image sensor 310 may naturally output the synchronization signals synchronized with the respective pixel data to the data input unit 321 through the synchronization signal line.

In operation 715, the data input unit 321 receives each pixel data input through each data line of each data channel and stores the received pixel data in the memory 323.

For example, the data input unit 321 may receive sync signals and pixel data from the image sensor 310, and may acquire and store respective pixel data in the memory 323 using the sync signals. Pixel data input through the first data line of the first data channel 330 may be stored in the first line memory 323. Pixel data input through the second data line of the first data channel 330 may be stored. It may be stored in the second line memory 323.

In operation 720, the input controller 325 reads pixel data stored in the memory 323, generates line data according to a predetermined method, and outputs the line data to the image signal processor 327 through one data channel.

For example, the input controller 325 may read the stored pixel data and generate line data corresponding to any pixel row of the Bayer pattern of the pixel array illustrated in FIG. 3. For this purpose, the input controller 325 may be stored in advance the information of the Bayer pattern.

In operation 725, the image signal processor 327 converts line data input from the input controller 325 into image data according to a predetermined format.

As described above, by providing the image processing method and apparatus according to the present invention, there is an effect that can receive and process the raw image signal output through the plurality of data channels in the image sensor.

In addition, the present invention has the effect of processing the raw image signal output through a plurality of channels without changing the post-processing processor connected to the rear end of the image sensor.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention as set forth in the claims below It will be appreciated that modifications and variations can be made.

Claims (12)

A data input unit connected to the image sensor through a plurality of data channels and receiving pixel data from the image sensor through each data channel; A memory for storing the pixel data; An input controller that reads the stored pixel data to generate and output line data by a predetermined method; And And an image signal processor connected to the input controller through one data channel and receiving the line data from the input controller and converting the line data into corresponding image data. The method of claim 1, And the line data is pixel data combined to correspond to pixel elements constituting an arbitrary pixel row of a predetermined Bayer pattern using the read pixel data. The method of claim 1, And the memory is composed of n (random natural numbers) line memories. The method of claim 3, wherein When the image sensor outputs pixel data corresponding to a specific pixel element of any pixel row through each data line of each data channel, The data input unit receives pixel data corresponding to a first pixel element of the pixel row through a first data line of each data channel, writes the pixel data to a first line memory, and outputs a second row of the pixel row through a second data line. And receiving pixel data corresponding to the pixel element and writing the same to the second line memory. The method of claim 4, wherein And the input controller reads pixel data written in the first line memory and the second line memory, respectively, and generates and outputs the line data. The method of claim 3, wherein When the image sensor outputs pixel data corresponding to any pixel row through each data line of each data channel, The data input unit writes pixel data input through each data channel to each line memory, And the input controller reads and outputs pixel data in line memory units. In a method of processing data in an image processor chip, Receiving and storing pixel data from an image sensor through a plurality of data channels; Reading the stored pixel data, generating line data according to a predetermined method, and outputting the same through one data channel; And And converting the line data into image data corresponding to a predetermined format. The method of claim 7, wherein And the line data is pixel data combined to correspond to pixel elements constituting an arbitrary row of pixels of a predetermined Bayer pattern using the read pixel data. The method of claim 8, Receiving and storing the pixel data from the image sensor through a plurality of data channels, Receiving and storing pixel data corresponding to a first pixel element of an arbitrary pixel row through a first data line of each data channel; And And receiving and storing pixel data corresponding to a second pixel element of the pixel row through a second data line. The method of claim 9, The reading of the stored pixel data, generating line data according to a predetermined method, and outputting the same through one data channel may include: Reading pixel data corresponding to the stored first pixel element; Reading pixel data corresponding to the stored second pixel element; And And generating and outputting the line data by alternately merging the read pixel data according to a predetermined method. An image sensor configured to output pixel data corresponding to a subject; A data input unit connected to the image sensor through a plurality of data channels, connected to the image sensor through a plurality of data channels, and receiving one or more pixel data from the image sensor through the plurality of data channels; A memory for storing the pixel data; An input controller that reads the at least one pixel data to generate and output line data in a predetermined format; And And an image signal processor connected to the input controller through one data channel and receiving the line data through the data channel and converting the line data into corresponding image data. The method of claim 11, And the line data is pixel data combined to correspond to pixel elements constituting an arbitrary pixel row of a predetermined Bayer pattern using the read pixel data.

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