JP2003230091A - Image data capturing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image data capturing apparatus capable of reusing, editing and storing image data outputted to an output device without extending the scale of circuit. <P>SOLUTION: The image data outputted from an output circuit 107 are fed back to an input side selector circuit 102 and only image data needing reuse are given to an input circuit 103 so as to decrease the number of accesses to a memory element 104 for reusing the image data. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention inputs image data and coded data from an input device and decodes the input image data and coded data to perform image synthesizing processing and enlargement. The present invention relates to an image data capturing apparatus that performs image processing such as reduction processing and various filter processing and outputs the image data to an output device, and particularly to an image data capturing apparatus having a function of reprocessing image data being output to an output device.

[0002]

2. Description of the Related Art The structure of a conventional image data capturing device is shown in FIG. In FIG. 3, 300 is an image data capturing device, 301 is an input device, and 308 is an output device. The input device 301 includes a camera that images a subject with an image sensor such as a CCD and outputs the image data as image data.
A wireless communication device that receives and outputs compressed encoded data, an OSD circuit that generates and outputs image data for an on-screen display (OSD) image, and the like are used. An image display device such as an LCD is used as the output device 308.

The image data capturing device 300 includes a memory element 304, an input circuit 303, and a first image processing circuit 30.
5, a second image processing circuit 306 and an output circuit 307.

The input circuit 303 inputs the data from the input device 301 to the first image processing circuit 305. The memory element 304 is used as a work storage area when performing compression encoding processing of image data and decompression processing of compression encoded data. The first image processing circuit 305 uses the memory element 304 as a storage area to perform compression encoding processing of image data and decompression processing of compression encoded data. The second image processing circuit 306 uses the memory element 304 as a storage area and performs image combining processing, enlargement / reduction processing, trimming processing, and various filter processing on the image data from the first image processing circuit 305. . Output circuit 307
Outputs the image data from the second image processing circuit 306 to the output device 308.

[0005]

In the conventional image data capturing device 300 having the above-mentioned configuration, the image data output to the output device 308, that is, the image synthesizing process, the enlarging / reducing process, the trimming process, and various types of image data. In order to reuse the image data that has been subjected to the filter processing or the like, the second image processing circuit 306 is configured to operate the memory element 304 while the first image processing circuit 305 is not accessing the memory element 304. After accessing 304 to save the image data that has been subjected to image combination processing, enlargement / reduction processing, trimming processing, various filter processing, etc.,
It is necessary to output the image data to the output circuit 307.

Therefore, it is necessary to add a control circuit for memory access control to the above configuration so that the access to the memory element 304 by the first image processing circuit 305 and the second image processing circuit 306 does not conflict. There is. The addition of this control circuit increases the circuit scale of the image data capturing device 300.

Further, the capability of compression / expansion processing by the first image processing circuit 305 and the screen synthesis processing, trimming processing, enlargement / reduction processing by the second image processing circuit 306,
Access to the memory element 304 competes by increasing the filter processing capability and increasing the data transfer capacity between the image processing circuits 305 and 306 and the memory element 304 so that data can be read and written in a short time. It is necessary to reduce the timing of the operation, but this also leads to an increase in the circuit scale.

The present invention has been made in view of the above points, and an image that can be edited or saved by reusing the image data output to the output device without increasing the circuit scale. An object is to provide a data capturing device.

[0009]

According to a first aspect of the present invention, there is provided an image data capturing device, which comprises an input circuit (input circuit 103) for inputting image data and encoded data from an input device, and the input circuit. And an image processing circuit (first image processing circuit 105, second image processing circuit 106) for processing image data and encoded data from the same, and the image processing circuit uses as a storage area for the image data and encoded data. A memory element (memory element 104), an output circuit (output circuit 107) for outputting image data from the image processing circuit to an output device, and an input of the input circuit are switched to data from the output circuit as necessary. And a selector circuit (selector circuit 102) for the purpose.

According to the image data capturing device having the above-mentioned configuration, the image data and the encoded data are input from the input device to the input circuit, and the image data and the encoded data from the input circuit are used in the memory area for the storage area. The circuit scale is increased by processing in the image processing circuit, outputting the processed image data from the output circuit to the output device, and switching the input of the input circuit to the data from the output circuit as needed by the selector circuit. The image data output to the output device can be reused, edited, and saved without being performed.

An image data capturing device according to a second aspect is the image data capturing device according to the first aspect, wherein the image processing circuit includes a first image processing circuit that transfers data to and from the memory element. And a second image processing circuit that does not exchange data with the memory element.

According to the image data capturing device having the above-mentioned configuration, since only the first image processing circuit transfers data to and from the memory element, the first image processing circuit and the second image processing circuit are connected to the memory element. Access conflict does not occur at all, and it is not necessary to add a control circuit for memory access control.

According to a third aspect of the present invention, there is provided the image data capturing apparatus according to the second aspect, wherein the first image processing circuit compresses and encodes the image data from the input circuit. A coding circuit, a first compression code decompression circuit for decompressing the compression coding data from the compression coding circuit and converting it into image data, and decompressing the compression coding data from the input device into image data. And a compression code expansion circuit for conversion.

According to the image data capturing device having the above-mentioned configuration, only the first image processing circuit can read and write the image data and the compression coded data from the memory element to perform the compression coding process and the decompression process.

An image data capturing device according to a fourth aspect is the image data capturing device according to the second aspect, in which the second image processing circuit responds to the image data from the first image processing circuit. It is characterized by having a function of performing image combination processing, enlargement / reduction processing, trimming processing, and various filter processing.

According to the image data fetching device having the above-mentioned structure, the image data can be subjected to the image synthesizing process, the enlarging / reducing process, the trimming process and the various filtering processes without reading / writing the image data from / to the memory element. it can.

According to another aspect of the image data capturing device of the present invention, the selector circuit inputs data to the input circuit only when the image data output from the output circuit is image data that needs to be reused. Is switched to the image data from the output circuit.

According to the image data capturing device having the above-mentioned configuration, of the image data output from the output circuit, only the image data that needs to be reused is fed back to the input circuit. The number of reading and writing can be reduced.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an image data capturing device of the present invention. In FIG. 1, 100 is an image data capturing device, 101
Is an input device, and 108 is an output device.

The input device 101 is a camera for picking up a subject with an image pickup device such as a CCD and outputting it as image data, a wireless communication device for receiving and outputting compression coded data,
An OSD circuit that generates and outputs image data for an OSD image. An image display device such as an LCD is used as the output device 108.

The image data capturing device 100 includes a selector circuit 102, an input circuit 103, a memory element 104, a first image processing circuit 105, a second image processing circuit 106 and an output circuit 107.

The selector circuit 102 is a block that selectively switches the input of the input circuit 103 to the data from one of the input device 101 and the output circuit 107. Normally, the data from the input device 101 is input to the input circuit 103. Then, the data is switched to the data from the output circuit 107 only when necessary. The input circuit 103 inputs the signal from the selector circuit 102 to the first image processing circuit 105. The memory element 104 stores the image data and the compression encoded data when performing the compression encoding process of the image data and the expansion process of the compression encoded data. First image processing circuit 105
Uses the memory element 104 as a storage area to perform compression encoding processing of image data and decompression processing of compression encoded data. The second image processing circuit 106 performs image combination processing, enlargement / reduction processing, trimming processing, and various filter processing on the image data from the first image processing circuit 105. The output circuit 107 outputs the image data from the second image processing circuit 106 to the output device 108 and the selector circuit 102.

The image data capturing device 100 having the above configuration
The image data and encoded data from the input device 101 and the image data from the output circuit 107 are input to the selector circuit 102.

The selector circuit 102 normally inputs the image data and the compression encoded data from the input device 101 to the input circuit 103. Therefore, the image data and the compression encoded data from the input device 101 are input to the first image processing circuit 105 through the selector circuit 102 and the input circuit 103. Then, the first image processing circuit 105 performs compression encoding processing of image data and decompression processing of compression encoded data. At that time, the first
The image processing circuit 105 performs processing while using the memory element 104 as a storage area.

The image data output from the first image processing circuit 105 is input to the second image processing circuit 106,
In the second image processing circuit 106, image composition processing, enlargement /
After reduction processing, trimming processing, and various filter processings, the data is output to the output device 108 through the output circuit 107.

At this time, when the image data output from the output circuit 107 is image data that needs to be reused, the selector circuit 102 switches the input of the input circuit 103 to the image data from the output circuit 107. As a result, the image data from the output circuit 107 is transferred to the input circuit 1
It is input to the first image processing circuit 105 through 03.
Then, the image data from the output circuit 107 is compression-encoded by the first image processing circuit 105, and the memory element 104
Stored in.

In this way, the image data output from the output circuit 107 is fed back to the selector circuit 102 on the input side, and only the image data that needs to be reused is input to the input circuit 103. The number of accesses to the memory element 104 for reuse can be reduced.

Further, since only the first image processing circuit 105 transfers data to and from the memory element 104, the first image processing circuit 105 and the second image processing circuit 106 transfer data to the memory element 104. Since access conflict does not occur at all, it is not necessary to add a control circuit for memory access control.

Therefore, according to the image data capturing apparatus 100 configured as described above, the image data output from the output circuit 107 can be reused without increasing the circuit scale.

FIG. 2 is a block diagram showing the detailed structure of the image data capturing device of the present invention. In FIG. 2, 2
00 is an image data capturing device, 201 is an input device, and 208 is an output device.

The input device 201 is a camera 2011 that picks up an image of a subject with an image pickup device such as a CCD and outputs it as image data, a wireless receiver 2012 that receives and outputs compressed coded data, and generates and outputs image data for an OSD image. OSD circuit 2013. An image display device such as an LCD is used as the output device 208.

The image data capturing device 200 includes a selector circuit 202, an input circuit 203, a memory element 204, a first image processing circuit 205, a second image processing circuit 206 and an output circuit 207. In this embodiment, a wireless transmitter 209 is further provided.

The selector circuit 202 is a block that selectively switches the input of the input circuit 203 to the data from one of the input device 201 and the output circuit 207. Normally, the data from the input device 201 is input to the input circuit 203. Then, the data is switched to the data from the output circuit 207 only when necessary. The input circuit 203 inputs the data from the selector circuit 202 to the first image processing circuit 205. The memory element 204 stores the image data and the compression coded data when performing the compression coding process of the image data and the decompression process of the compression coded data.

The first image processing circuit 205 is a block for performing compression encoding processing of image data and decompression processing of compression encoded data by using the memory element 204 as a storage area. The compression encoding circuit 2051, The first and second compression code expansion circuits 2052 and 2053 are provided.

The compression encoding circuit 2051 is used by the camera 201.
1 or a block for compression-encoding the image data from the output circuit 207, and sends the compression-encoded data to any of the memory element 204, the wireless transmitter 209, and the first compression code expansion circuit 2052. First compression code expansion circuit 2
Reference numeral 052 is a block that expands the compression coded data from the compression coding circuit 2051 into image data, and sends the expanded image data to the memory element 204 or the second image processing circuit 206. The second compression code expansion circuit 2053
This is a block that expands the compression coded data from the wireless receiver 2012 into image data, and sends the expanded image data to the memory element 204 or the second image processing circuit 206. The second image processing circuit 206 performs image combination processing, enlargement / enlargement processing on the image data from the first image processing circuit 205.
A block that performs reduction processing, trimming processing, and various filter processing, and includes a preprocessing circuit 2061 and an image synthesizing circuit 2062.

The preprocessing circuit 2061 is a block for performing enlargement / reduction processing, trimming processing, and various filter processing on the image data from the first and second compression code expansion circuits 2051 and 2052. The data is sent to the image composition circuit 2062. The image composition circuit 2062
A block that performs image synthesis processing on the image data from the preprocessing circuit 2061 and the OSD circuit 2013,
The image data after combining a plurality of image data is sent to the output circuit 207.

The output circuit 207 is the second image processing circuit 2
The image data from 06 is output to the output device 208 and the selector circuit 202.

The image data capturing device 200 having the above configuration
The image data and encoded data from the input device 201 and the image data from the output circuit 207 are input to the selector circuit 202. The selector circuit 202 normally inputs the image data and the compression encoded data from the input device 201 to the input circuit 203.

Image data picked up by the camera 2011 of the input device 201 is input to the compression encoding circuit 2051 in the first image processing circuit 205 through the selector circuit 202 and the input circuit 203 and stored in the memory element 204. The compressed and encoded image data is compared with the preceding and following image data. The data compression-coded here is output to the first compression code decompression circuit 2052 and the wireless transmitter 209. The wireless transmitter 209 wirelessly transmits the input compression-coded data to an external device.

At the same time, the compression coded data from 2012 of the input device 201 is input to the second compression code expansion circuit 2053 in the first image processing circuit 205 through the selector circuit 202 and the input circuit 203 and expanded. It

First and second compression code expansion circuit 205
The image data output from Nos. 2 and 2053 is input to the preprocessing circuit 2061 in the second image processing circuit 206, and subjected to enlargement / reduction processing, trimming processing, and various filter processing, respectively, and then the image synthesis circuit. It is input to 2062.

On the other hand, the image data from the OSD circuit 2013 is input to the image synthesizing circuit 2062.

Then, the image synthesizing circuit 2062 performs a process of synthesizing the plurality of image data, and the synthesized image data is output to the output circuit 207. Output circuit 2
The image data output from 07 is the image display device 208.
Is displayed in.

At this time, if the image data output from the output circuit 207 is image data that needs to be reused, the selector circuit 202 switches the input of the input circuit 203 to the image data from the output circuit 207.

As a result, the image data from the output circuit 207 is transmitted through the input circuit 203 to the first image processing circuit 2
It is input to the compression encoding circuit 2051 in 05. Then, after being compression-encoded by the compression-encoding circuit 2051, it is stored in the memory element 204 or transmitted from the wireless transmitter 209 to an external device for reuse.

In this way, the image data output from the output circuit 207 is fed back to the selector circuit 202 on the input side, and only the image data that needs to be reused is input to the input circuit 203. The number of accesses to the memory element 204 for reuse can be reduced.

Since only the first image processing circuit 205 transfers data to and from the memory element 204, the first image processing circuit 205 and the second image processing circuit 206 transfer data to the memory element 204. Since access conflict does not occur at all, it is not necessary to add a control circuit for memory access control.

Therefore, according to the image data capturing device 200 configured as described above, the image data output from the output circuit 207 can be reused without increasing the circuit scale.

[0049]

As described above, the image data capturing device of the present invention feeds back the image data output from the output circuit to the selector circuit for switching the input, and inputs only the image data that needs to be reused. By inputting to the circuit, the image data output to the output device can be reused without increasing the circuit scale.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an image data capturing device of the present invention.

FIG. 2 is a block diagram showing a detailed configuration of an image data capturing device of the present invention.

FIG. 3 is a block diagram showing a configuration of a conventional image data capturing device.

[Explanation of symbols]

100 Image data capture device 101 Input device 102 selector circuit 103 input circuit 104 memory device 105 First image processing circuit 106 Second image processing circuit 107 output circuit 108 Output device 200 Image data capture device 201 Input device 202 selector circuit 203 Input circuit 204 memory device 205 First image processing circuit 206 Second image processing circuit 207 output circuit 208 Output device 2051 compression encoding circuit 2052 First compression code expansion circuit 2053 Second compression code expansion circuit 2061 Pre-processing circuit 2062 image composition circuit

Claims (5)

[Claims] 1. An input circuit for inputting image data and coded data from an input device, an image processing circuit for processing the image data and coded data from the input circuit, and the image processing circuit A memory element used as a storage area for encoded data, an output circuit for outputting image data from the image processing circuit to an output device, and for switching the input of the input circuit to the data from the output circuit as necessary. An image data capturing device, comprising: 2. The image processing circuit includes a first image processing circuit that transfers data to and from the memory element, and a second image processing circuit that does not transfer data to and from the memory element. The image data capturing device according to claim 1, wherein 3. The first image processing circuit includes a compression encoding circuit for performing compression encoding of the image data from the input circuit, and image data obtained by expanding the compression encoded data from the compression encoding circuit. A first compression / decompression circuit for converting to
The image data capturing device according to claim 2, further comprising: a compression code expansion circuit that expands the compression encoded data from the input device and converts it into image data. 4. The second image processing circuit, an image synthesizing process for the image data from the first image processing circuit,
The image data capturing apparatus according to claim 2, further comprising a function of performing enlarging / reducing processing, trimming processing, and various filter processing. 5. The selector circuit converts the input of the input circuit into the image data from the output circuit only when the image data output from the output circuit is image data that needs to be reused. The image data capturing device according to claim 1, wherein the image data capturing device is switched.