JP2005123726A - Data recording device and data display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data recording device and a data display device for displaying an easy-to-see caption even when a reproduced video is displayed on a small-sized display device. <P>SOLUTION: Video data before conversion read from a recording medium 300 are expanded in a frame memory 21. A character recognition section 30 analyzes the video caption written in the video data in the form of a video image as a graphic to obtain caption text data through the character recognition. A data format conversion section 50 converts the data format of the video data as necessary, and a write section 40 records the video data after the conversion and the caption text data. The small-sized display device such as a mobile phone receives the video data from the recording medium or a network medium, the video data are displayed on the first display area of the display, and a caption generated from the caption text data in matching with the area is displayed on a second display area. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a data recording apparatus for capturing video data and recording it on a recording medium. The present invention also relates to a data display device that captures and displays video data.

In recent years, portable terminals have become widespread. A portable terminal is required to be small in size so that it is convenient to carry. However, not only miniaturization of the case but also multifunction and high performance are required. As a typical example, while mobile phones are becoming smaller year by year, the functions thereof are not only calling functions but also incorporating various functions such as i-mode functions, camera functions, video recording / playback functions, and GPS utilization functions.
One of the functions that mobile terminals such as mobile phones are taking in is a function that reads video data of content such as movies and TV dramas, reproduces and displays the video data, and enables viewing of the content.
Here, it is necessary to devise a method for reading video data in a portable terminal such as a cellular phone. First, content data such as a movie is usually provided by a large-capacity recording medium such as a DVD, but a portable terminal such as a mobile phone is compatible with a large recording medium such as a DVD due to the limitation of the size of the case. Since the drive cannot be mounted, data cannot be read directly from these large-capacity recording media, so it is necessary to re-record on small recording media. Second, if the data format (MPEG4, H.264, etc.) used for moving picture data of a portable terminal such as a mobile phone is different from the data format (MPEG2, etc.) used for DVD, etc., it is recorded on the DVD. It is necessary to convert the data format of the video data into a data format that is easy to use on a portable terminal.

In the prior art, as a method of reading video data in a portable terminal such as a cellular phone, a method of receiving data distribution via a communication line via a communication function (Non-Patent Document 1), data having a plurality of recording media drives Video data read from a large recording medium such as a DVD using a playback recording device is re-recorded on another small recording medium such as an SD card (TM), memory stick (TM), smart media (TM), etc. A method of reading video data from the small recording medium using a mobile phone equipped with a drive (Non-Patent Document 2) is known.
Nikkei Sangyo Shimbun article dated July 11, 2003 http://panasonic.jp/dvd/recorder/e2000h/spec

In the stage of reading video data into a portable terminal, the method for reading video data into the portable terminal shown in Non-Patent Document 1 and Non-Patent Document 2 is a useful method.
On the other hand, at the stage of reproducing the video content of the portable terminal, as shown below, it is necessary to improve the display of the video caption.
A portable terminal is required to be small in size for convenience of carrying, and a display that can be mounted is small. The larger the display that displays the video, the easier it is to see the video, but the user can watch the video while holding the display of the portable terminal near the face, even if the absolute size of the video is somewhat small Can be viewed, and the great advantage of viewing from any location on a portable terminal is attractive, and it is expected that the number of viewing modes of this video will increase in the future. However, the video caption written as a video in the video may be too small to be read immediately. Some of the most popular content viewed by users are foreign movies, foreign dramas, and performance videos of foreign singers, and there are cases in which voice-overs are provided for the translation of these. In many cases, a caption indicating is written and added as a video caption in the video. Due to their nature, these video captions are attached to a position that does not interfere with the main video, for example, at the bottom of the video screen. Since video captions are attached on the premise of playback display on a somewhat large display, when a foreign movie is played back on a small display such as a portable terminal, the absolute size of the entire display surface is small, and The video caption displayed in a small size at the bottom of the small display surface is difficult to see, and it may be difficult to identify the video caption.
Many contents such as foreign movies are not dubbed by voice but are provided with video captions, and there is a problem that this results in inconvenience to the user.

  In view of the above problems, the present invention can process and display a caption so that the caption can be fully recognized by the user even when the small display of the portable terminal is used as a display screen. An object is to provide a data recording device and a data display device.

In order to achieve the above object, a first data recording apparatus of the present invention is a data recording apparatus for capturing video data and recording it on a recording medium,
A video data input section for capturing video data;
A frame memory control unit for developing video data captured from the video data input unit in the frame memory;
The video caption written as video in the video data developed in the frame memory is analyzed as a figure, character recognition is performed, and caption text data and correspondence information between the caption text data and the video data are obtained. A character recognition unit to be generated;
A writing unit that receives the video data from the frame memory, receives the caption text data and the correspondence information from the character recognition unit, and writes them into the recording medium;
With the above configuration, caption text data and correspondence information can be obtained in addition to video data, and caption text data can be used in a system that uses a recording medium recorded by the first data recording apparatus of the present invention. Since the caption text data is not video data but text data, it can be easily used in various forms.

A second data recording apparatus of the present invention is a data recording apparatus for capturing video data and recording it on a recording medium,
A video data input section for capturing video data;
A frame memory control unit for developing video data captured from the video data input unit in the frame memory;
The video caption written as video in the video data developed in the frame memory is analyzed as a figure, character recognition is performed, and caption text data and correspondence information between the caption text data and the video data are obtained. A character recognition unit to be generated;
A data format conversion unit for converting the video data expanded in the frame memory into a desired data format;
And a writing unit that receives the video data after the data format conversion from the data format conversion unit, receives the caption text data and the correspondence information from the character recognition unit, and writes them to the recording medium.
With the above configuration, caption text data and corresponding information can be obtained together while converting the data format of the video data.

In the above data recording device, in the video data developed in the frame memory, the video caption for erasing the video caption by filling the inside of the character contour of the video caption with a gradation between pixels of opposing character contour edges It is also preferable to provide an erasing unit.
With the above configuration, the video caption can be erased from the video. Since the caption itself can be used in the form of text data, the video caption remaining in the video is unnecessary, so there is no problem even if it is erased, and it is preferable to erase the video caption that was written in a way that damages the video. It is.

Next, a first data display device of the present invention is a data display device for displaying video content,
A video data input unit that captures video data, caption text data, and corresponding information from the media used;
A display for displaying video content;
A frame memory, wherein the display area of the display is divided into at least two display areas of a first display area and a second display area, and a first area and a second area of the frame memory corresponding to each display area A display control unit that controls data writing to the display area and controls display in each display area;
In accordance with display control of the display control unit, a video display processing unit that reads the video data captured from the video data input unit and develops the video data in a first area of the frame memory;
In accordance with display control of the display control unit, the caption text data captured from the video data input unit and the correspondence information are read, and the video data developed in the first area of the frame memory based on the correspondence information A caption display processing unit that selects caption text data corresponding to and expands it in the second area of the frame memory,
A data display device in which the video is displayed in a first display area of the display and the caption is displayed in a second display area of the display.
With the above configuration, when captions are given as caption text data in the media to be used, video data can be displayed in the first display area and captions can be displayed in the second display area. For example, in the case of a device with a small display such as a portable terminal, the user can adjust the size of the second display area to a size that does not make it difficult to visually recognize characters so that the caption is not too small. Can easily read captions.

  In the case of movies and television content, since the aspect ratio of the video screen is determined, for example, when displaying the video of the aspect ratio on the display of the portable terminal, if there is room in the vertical direction of the display, The display area remaining on the lower side may be used as the second display area to display a large caption in the area.

A second data display device of the present invention is a data display device that captures video data and displays video content,
A video data input section for capturing video data;
A display for displaying video content;
A character recognition frame memory, a video display frame memory, a caption display frame memory,
A control unit having a function of developing a video data stream captured from the video data input unit into the video display frame memory for each frame, and a function of sampling the video data stream at a predetermined cycle and developing the video data stream into the character recognition frame memory When,
A video display control unit for controlling video display on the first display area of the display based on the data developed in the video display frame memory;
A character recognition unit that analyzes a video caption written as a video in the video data developed in the character recognition frame memory as a figure, performs character recognition to generate caption text data, and
A caption display control unit that controls the display of the caption text in the second display area of the display based on the caption text data recognized by the character recognition unit.
With the above configuration, for example, by accessing the portable small memory that is the media used, or by wireless communication such as terrestrial digital broadcasting, the video content with the video caption still being written is read and the caption text data is handled. Information can be generated and used.

According to a third data display device of the present invention, in the second data display device described above, the inside of the character contour of the video caption in the video data developed in the first area of the frame memory is opposed to the character contour. A video caption erasure unit for erasing the video caption, and filling the image with gradation between pixels at an edge; wherein the video with the video caption erased is displayed in the first display area of the display; and the second display of the display The caption is displayed in the area.
With the above configuration, the video caption written in the video can be erased.

  The data recording device and the data display device described above generate caption text data from a video caption and use the caption text data. However, the video caption can be enlarged and used as it is. .

A fourth data display device of the present invention is a data display device that captures video data and displays video content,
A video data input section for capturing video data;
A display for displaying video content;
A frame memory for video display, a frame memory for caption display,
A control unit having a function of expanding the video data stream captured from the video data input unit into the video display frame memory for each frame;
A video display control unit for controlling video display on the first display area of the display based on the data developed in the video display frame memory;
The video caption written as video in the video data expanded in the video display frame memory is analyzed as a figure to recognize the video caption area in the video data, and the video data in the video caption area is displayed on the display A caption display control unit that replicates and expands in the caption display frame memory while expanding at a vertical and horizontal magnification according to the size of the second display area;
A video caption erasing unit that fills the inside of a character outline of a video caption in video data expanded in the video display frame memory with gradation between pixels of opposing character outline edges, and erases the video caption;
An image from which the image caption has been deleted is displayed in the first display area of the display, and the caption enlarged at the aspect ratio is displayed in the second display area of the display.
With the above configuration, the video caption portion in the video can be erased, and the video caption portion can be enlarged and displayed in the second display area. The size of the second display area is difficult to visually recognize the video caption. The user can easily read the caption if the size is adjusted to such an extent that it is not necessary.
In the data recording apparatus or data display apparatus of the present invention, examples of accessible media that can be accessed by the video data input unit for capturing video data include a DVD, CD, MO, HDD, memory, and the like on which video data is recorded. Recording media. In addition, network media such as terrestrial digital broadcast, satellite broadcast, CATV, and the Internet such as computer communication capable of distributing video data can be used. In the case of network media, recording media such as HDDs and memories included as resources to which the network is connected are also included.

According to the data recording apparatus of the present invention, caption text data and corresponding information can be obtained in addition to video data, and caption text data is used in a video data display apparatus that uses a recording medium written by the data recording apparatus. be able to. Since the caption text data is not video data but text data, it can be easily used in various forms.
According to the data display device of the present invention, video data can be displayed in the first display area, and captions can be displayed in the second display area. For example, in the case of a device with a small display such as a portable terminal, the user can adjust the size of the second display area to a size that does not make it difficult to visually recognize characters so that the caption is not too small. Can easily read captions.

  Embodiments of a data recording apparatus and a data display apparatus according to the present invention will be described below with reference to the drawings.

1 shows an example of a first data recording device and a first data display device according to Example 1 of the present invention.
The first data recording device reads video data (with video caption) from a recording medium or network media to be read, executes caption text data generation processing by character recognition of the video caption, and performs video data and caption text data. And the correspondence information between the two is recorded on a small recording medium to be written.
1 and 2 are diagrams schematically showing an example of the basic configuration of a first data recording apparatus 100 according to Embodiment 1 of the present invention.

In the example of FIG. 1, the video data input unit 10 includes a reading device corresponding to a recording medium 300 to be read, and has a physical interface and a logical interface corresponding to the recording medium 300. The video data input unit 10 reads video data one after another from the recording medium 300 to be read and passes it to the frame memory control unit 20.
The recording medium 300 to be read is not particularly limited. For example, a recording medium 300 such as a DVD, CDROM, VHS video tape, or MO on which content such as a foreign movie is recorded can be used. Further, when a television broadcast is received from the outside, the received television broadcast is recorded on a built-in hard disk storage device, and is updubbed to a small recording medium 400 to be written, the hard disk recording device becomes the recording medium 300. obtain.

In the example of FIG. 2, the video data input unit 10 has a function of receiving digital terrestrial broadcasts and satellite broadcasts, and a function of accessing network media such as the Internet, and has a communication interface with the network media. The video data input unit 10 downloads video data from the network medium 310 one after another and takes it in and passes it to the frame memory control unit 20. Note that the video data input unit 10 preferably has a tuning function and can perform channel selection and the like.
When downloading via network media on demand, the connected recording medium connected via the network can be the recording medium 300 to be read.

  Next, in FIG. 1 or FIG. 2, the small recording medium 400 to be written is not particularly limited, but a portable small recording medium is assumed. The small recording medium 400 provided by the data recording apparatus of the present invention is assumed to be a recording medium that can be handled by a small portable terminal such as a mobile phone that cannot directly handle the recording medium 300 such as a DVD. Therefore, for example, a portable small recording medium such as a memory stick (TM), a compact flash card (TM), a smart media card (TM), and an SD card (TM) can be the recording medium 400.

In addition, when video data is exchanged between three or more recording media and network media, it can be understood as follows (Note that in the following description, the case of recording media will be described representatively, Can be thought of as well.) A plurality of network media and recording media for transmitting and receiving video data are arranged with the flow of transmission and reception taken as a flowchart, the recording media for transmitting video data to other recording media are the recording media 300, and the receiving recording media are the small recording media 400, When the recording media A, the recording media B, and the recording media C transfer video data in this order in series, when attention is paid to the relationship between the recording media A and the recording media B, the recording media A is the recording media 300 and the recording media B is small. Focusing on the relationship between the recording medium B and the recording medium C, the recording medium B becomes the recording medium 300, and the recording medium C becomes the small recording medium 400. When video data is exchanged from recording medium A to two recording media, recording medium B and recording medium C, in a so-called parallel manner, recording medium A is recording medium 300, and recording medium B and recording medium C are each independently small. The recording medium 400 is obtained. Conversely, when video data is transferred from the recording medium A and the recording medium B to the recording medium C, the recording medium A and the recording medium B are each independently the recording medium 300, and the recording medium C is the small recording medium 400. It becomes.
In addition, when video data is downloaded from the network medium 310, temporarily stored in the internal hard disk in the data recording apparatus, and later dubbed from the hard disk to a small recording medium 400 such as a Memory Stick (TM), the network medium is read. The hard disk may be used as a writing target medium by performing the caption data and corresponding information generation processing of the present invention as the target medium, and recording from the network medium 310 to the hard disk does not perform the caption data and corresponding information generation processing of the present invention. The hard disk may be used as a read target medium, and the small-sized recording medium 400 may be used as a write target medium by performing the caption data and corresponding information generation processing of the present invention.
Regarding the data format, the first data recording apparatus of the first embodiment will be described as an example in which the data format conversion processing of the video data captured from the recording medium 300 or the network medium 310 to be read is unnecessary.

The frame memory control unit 20 includes a frame memory 21 and controls input / output of the frame memory 21. The frame memory control unit 20 develops the video data read from the recording medium 300 to be read in the frame memory 21.
The character recognizing unit 30 is a part that analyzes a video caption written as a video in the video data expanded in the frame memory 21 as a graphic, recognizes the character, and generates caption text data. Further, this is a part for generating the generated caption text data and the correspondence information between the video data in which the caption is written as a video.
The character recognition unit 30 includes a character pattern database 31. The character pattern database 31 is a database in which character patterns used for pattern matching in character recognition processing are collected.

  FIG. 3 is a diagram schematically illustrating an outline of processing in the character recognition unit 30. The video data read from the recording medium 300 such as a DVD by the processing of the frame memory control unit 20 is expanded in the frame memory 21 for each frame. FIG. 3 schematically shows the video. At the bottom of the video, video captions are written (burned) in the video. This video caption is burned into the video itself, and can be regarded as graphic data reflected in the video, not text data. Assume that the video frame in this example has a video caption that says, “Turn back while climbing the hill. You can see the sea.”

First, the character recognizing unit 30 searches for an area including a graphic pattern of the video caption in the video developed on the frame memory 21. The character recognition unit 30 preferably has a learning function for the search. Here, the area in which the video caption is written is often fixed to a certain part such as the lowermost part of the video area or the right end part, and the learning effect is high.
Next, the character recognizing unit 30 cuts out a graphic pattern for each character from the video caption graphic. Then, pattern matching between the character pattern in the character pattern database 31 and the extracted graphic pattern is performed, and recognition processing for each character in the video caption is performed. Thereafter, in order to improve recognition accuracy, it is also preferable to perform word recognition, semantic recognition, syntax check, and the like. It is assumed that an engine, a word database, a semantic database, a syntax database, and the like necessary for word recognition and semantic recognition are provided.

As a result of the character recognition by the character recognition unit 30, as shown in FIG. 3, caption text data as text data is obtained from a video caption as a graphic. Here, you can get caption text data that says “Look around the hill and look back. You can see the sea.”
The character recognition unit 30 also generates correspondence information indicating the correspondence between the video data and the caption text data in order to indicate in which video frame the obtained caption text data corresponds to the video caption. For example, the correspondence information “video frame number OO—caption text data number OO” is generated. The generated caption text data and correspondence information are passed to the writing unit 40.

  The video data writing process to the frame memory 21 by the frame memory control unit 20 and the character recognition process by the character recognition unit 30 are performed for each video frame. Note that the character recognition processing by the character recognition unit 30 may not be performed for each video frame, but may be performed by sampling the video frame at predetermined intervals. The video caption requires a certain amount of time due to the nature of being read by the human eye, and the same video caption is attached over a plurality of frames although it is long and short. Therefore, performing character recognition processing for all frames may be a waste of resources. Therefore, character recognition processing may be performed on frames sampled at intervals (for example, 1-second intervals or 2-second intervals) that do not cause the video caption to switch twice or more.

  Next, in FIG. 1 or FIG. 2, the writing unit 40 writes the video data stream passed from the frame memory control unit 20, the caption text data passed from the character recognition unit 30, and corresponding information into the recording medium 400 to be written. This is the part to write to. A writing drive for the recording medium 400 to be written is provided, and video data is written to the recording medium 400 to be written in a physical format and a logical format corresponding to the recording medium 400.

As described above, the data recording apparatus of the present invention reads video data including a video caption such as a foreign movie recorded on the recording medium 300 to be read such as a DVD, and the video data and a caption corresponding to the video caption. Text data is recorded on a small recording medium 400 to be written such as an SD card (TM) or a memory stick (TM). In the portable terminal accessing the recording medium 400, caption text data as text data can be used together with video data.
Although the buffer memory or the like is not shown in the configuration example of FIG. 1, a buffer memory may be used if necessary in any processing.

Next, the first data display device of the present invention will be described.
The first data display device 200 reads video data, caption text data, and their corresponding information from a recording medium such as the above-mentioned small recording medium 400 or a network medium, and displays the video data in the first display area of the display. , A device for displaying captions in a second display area of the display. Note that caption text data is used to display captions.
Note that the first data display device 200 is assumed to be a small portable terminal, and here, for example, is a multi-function mobile phone.
4 and 5 are diagrams schematically illustrating a basic configuration example of the first data display device 200 according to the first embodiment of the present invention.

In the example of FIG. 4, the video data input unit 210 includes a reading device corresponding to the small recording medium 400, and has a physical interface and a logical interface corresponding to the small recording medium 400. The video data input unit 210 reads video data, caption text data, and corresponding information one after another from the small recording medium 400 to be read, and the video data is input to the video display processing unit 220, and the caption text data and the corresponding information are caption display processing units. Go to 230.
The small recording medium 400 to be read is a small recording medium in which video data, caption text data, and correspondence information are written by the first data recording apparatus 100 of the present invention.

In the example of FIG. 5, the video data input unit 210 has a function of accessing network media such as terrestrial digital broadcasting and the Internet, and has a communication interface with the network media. The network medium 310 includes resources in which video data, caption text data, and correspondence information between the both are stored. These data are prepared by the service provider and provided to the user. There may be various forms of provision, such as paid and free.
The video data input unit 210 reads the video data, caption text data, and corresponding information from the network medium 310 one after another, and passes the video data to the video display processing unit 220 and the caption text data and the corresponding information to the caption display processing unit 230. Go. Note that the video data input unit 10 preferably has a tuning function and can perform channel selection and the like.

The video display processing unit 220 is a part that receives the video data passed from the video data input unit 210 and develops the video data in the first area 251 of the frame memory 250 in accordance with the display control of the display control unit 240.
The caption display processing unit 230 receives the caption text data and correspondence information passed from the video data input unit 210, refers to the correspondence information, and corresponds to the video data expanded in the first area 251 of the frame memory 250. The caption text data to be selected is selected, and the selected caption text data is developed in the second area 252 of the frame memory 250 in accordance with the display control of the display control unit 240. When expanding the caption text data to the second area 252 of the frame memory 250, the caption can be enlarged and displayed in accordance with the size of the second area 252 (the size of the second display area of the display 260). Adjust the aspect ratio to expand.

The display control unit 240 includes a frame memory 250, divides the display area of the display 260 into at least two display areas, a first display area 261 and a second display area 262, and the frame memory 250 corresponding to each display area. This is a part for controlling the data writing to the first area 251 and the second area 252 to control the display in each display area. That is, data written in the first area 251 of the frame memory 250 is displayed in the first display area 261 of the display 260, and data written in the second area 252 of the frame memory 250 is displayed in the second area of the display 260. Will be displayed in the display area 262. Thus, the display screen of the display 260 is divided and controlled by controlling the writing area to the frame memory.
The type of display 260 is not particularly limited. There are various types such as liquid crystal displays, plasma displays, organic EL displays, and CRTs. Here, a small liquid crystal display that is often used in a multi-function mobile phone is used.

As described above, the video data is stored in the first area 251 of the frame memory 250 and the caption text data is stored in the second area of the frame memory 250 under the control of the video display processing unit 220, the caption display processing unit 230, and the display control unit 240. Since the image is written separately in the area 252, the video is displayed in the first display area 261 of the display 260 and the caption is displayed in the second display area 262 of the display 260.
Here, by adjusting the size of the second area 252 of the frame memory 250 for displaying the caption and controlling the size of the second display area 262 of the display to an appropriate size, The size can be increased to an extent that is easy to read.

FIG. 6 is a diagram schematically illustrating a state in which a caption is displayed in a large size in accordance with the size of the second display area 262. FIG. 6A shows the state of the display screen when the video data recorded on the recording medium 300 to be read is reproduced as it is. The video caption in the video frame is reflected as it is.
In this example, the display is substantially square, and the video frame is short in the vertical direction due to its aspect ratio, so there is an area left in the vertical direction in this example.
When the display screen of FIG. 6A is displayed on a small display such as a mobile phone, it may be difficult to read because the absolute size of the video caption is too small.
FIG. 6B shows a state of a display screen when captions are displayed in the second display area 262 by the data display device 200 of the present invention. The video caption in the video frame of the first display area 261 is small and difficult to see, as in FIG. 6A, but the second display area 262 displays a large caption based on the caption text data. It is easy to read.
Thus, by using the data display device 200 of the present invention, a user can easily read a caption even in a portable terminal equipped with a small display such as a cellular phone.

  7 and 8 show a state of the first display area (video display surface) and the second display area (caption display surface) in the small display 260 of the cellular phone which is the data display device 100 of the present invention. It is the figure which showed an example. The aspect ratio of the video display surface is determined by the video content. The caption display surface is preferably secured in a surplus area after the video display surface 261 is secured on the small display 260. FIG. 7 is a diagram showing an example of the position of the caption display surface when the small display 260 is placed vertically and the image display surface 261 is secured. FIG. 8 shows the image display surface 261 secured while the small display 260 is placed horizontally. It is a figure which shows an example of the position of the caption display surface in a case. In the figure, reference numeral 291 denotes an upper case, 292 denotes a lower case, 293 denotes a speaker, 294 denotes a microphone, 295 denotes a key input unit, and 296 denotes an antenna.

A second data recording apparatus according to the second embodiment of the present invention has the basic function of the first data recording apparatus shown in the first embodiment, and further, video data data read from the recording medium 300 or the network medium 310. Conversion processing for converting from a format to another data format is also performed.
FIG. 9 is a diagram schematically illustrating a basic configuration example of the second data recording apparatus 100a according to the second embodiment of the present invention.
The video data input unit 10, the frame memory control unit 20, the character recognition unit 30, and the writing unit 40 may be the same as those shown in FIG. Also, the recording medium 300 to be read and the recording medium 400 to be written may be the same as those shown in FIG.
Although not shown, the video data input unit 10 includes a communication interface, has a function of accessing the network medium 310, and downloads video data from the network medium 310, as in FIG. 2 of the first embodiment. good.

  In FIG. 9, the data format conversion unit 50 is a part that generates a video data stream while converting the video data expanded in the frame memory 21 into a desired data format. The generated video data stream is passed to the writing unit 40. For example, the first recording medium 300 such as a DVD is recorded in the MPEG2 data format, and the second recording medium 400 such as an SD card (TM) or a memory stick (TM) is recorded in a data format such as MPEG4 or H.264. When recording, the data format conversion unit 50 converts the data format of the video data from MPEG2 to MPEG4 or H.264.

The flow of processing of the second data recording apparatus 100a of the present invention is as follows.
Following the video data reading process from the recording medium 300 by the video data input unit 10, the video data writing process to the frame memory 21 by the frame memory control unit 20, the data format conversion process by the data format conversion unit 50 is followed by the video frame. Do it every time. For example, the data format conversion unit 50 converts from MPEG2 to a data stream in the H.264 data format.
The character recognition processing by the character recognition unit 30 may be performed by sampling video frames at predetermined intervals instead of being performed for each video frame, as in the first embodiment.
The writing unit 40 performs a video data writing process in which the video data stream after the data format conversion passed from the data format conversion unit 50, the caption text data passed from the character recognition unit 30 and the corresponding information are written to the recording medium 400. . The writing unit 40 includes a writing drive for the recording medium 400 and writes video data to the recording medium 400 in a physical format and a logical format corresponding to the recording medium 400.

In addition, as a data display apparatus, what was shown in Example 1 can be used. The recording medium 400 in which the video data is written by the second data recording device 100a of the present invention can be reproduced by the data display device 200, and the video is displayed in the first display area 261 as shown in FIG. Is displayed in the second display area 262.
As described above, according to the second data recording apparatus of the present invention, the caption text data and the corresponding information can be written together on the recording medium while converting the data format of the video data. Caption text data can be used.

7 shows an example of a data recording device and a data display device according to Example 3 of the present invention.
The data recording device 100b according to the third embodiment executes the processing for generating caption text data by character recognition of the video caption, similar to the data recording device 100 or 100a according to the first or second embodiment. The data recording device 100b also has a function of erasing video captions remaining in the video. As shown in the first embodiment or the second embodiment, the caption read by the user is displayed in the second display area based on the caption text data, so that the video caption remaining in the video is wasted. On the other hand, it is noise that damages the image, and it is preferable to delete them.
The following configuration example will be described as a configuration example including the data format conversion unit 50 shown in the second embodiment, but a configuration without the data format conversion unit 50 as shown in the first embodiment is also possible.

FIG. 10 is a diagram schematically illustrating a basic configuration example of a data recording apparatus according to the third embodiment of the present invention.
In the configuration example of FIG. 10, the constituent elements of the video data input unit 10, the frame memory control unit 20, the frame memory 21, the character recognition unit 30, the character pattern DB 31, the data format conversion unit 50, and the writing unit 40 are illustrated in FIG. It may be the same as shown in. Further, the recording medium 300 to be read and the recording medium 400 to be written may be the same as those shown in FIG.
Although not shown, the video data input unit 10 includes a communication interface, has a function of accessing the network medium 310, and downloads video data from the network medium 310, as in FIG. 2 of the first embodiment. good.

In FIG. 10, the video caption erasing unit 60 is a part that searches for video captions in the video data developed in the frame memory 21 and erases the video captions from the video.
It should be noted that the video caption search process may be performed by the video caption erasing unit 60, or the character recognition unit 30 may be notified of the video caption area information obtained in the search process during the character recognition process. good. In the latter case, although not shown in FIG. 10, notification of video caption area information is performed from the character recognition unit 30 to the video caption deletion unit 60.
Deletion processing of video captions reflected in the video does not mean that the pixels inside the character outline of the video caption are zero values, but ideally the original caption before the video caption is written in the video. It means returning. If the video caption deletion unit 60 can obtain the original video data from the outside, the original video data may be used as the video data after the video caption is deleted. When the video caption erasure unit 60 can use only video data in which the video caption is captured as video, the video caption must be processed to erase the video caption. Therefore, the original video of the part covered with the video caption can only be estimated from the video around the video caption.

Therefore, the following pseudo erasure process is performed in the data recording apparatus 100b of the third embodiment. By embedding the inside of the character outline of the video caption with gradation between the pixels of the opposing character outline edges, and seamlessly connecting the part where the video caption was written with the surrounding video part to make it inconspicuous To erase. Since the characters constituting the video caption are originally composed of thin line segments, such a pseudo-erasure process can provide a sufficient effect.
Here, the method for selecting the opposing character contour edges is not particularly limited. However, in consideration of shortening the processing time, for example, a method of scanning in the horizontal direction and sequentially selecting the opposing character contour edges, in the vertical direction. For example, a method of sequentially selecting character outline edges that are opposite to each other by scanning can be employed.

  When character recognition processing, video caption erasure processing, and data format conversion processing are performed based only on video data developed in the frame memory without using a buffer memory or the like, the video caption erasure processing of the video caption erasure unit 60 is performed as text. This can be performed after the character recognition processing by the recognition unit 30 and before the data format conversion processing by the data format conversion unit 50. When the character recognition unit 30 or the video caption erasure unit 60 is provided with a buffer memory (not shown), the character recognition process or the video caption erasure process can be performed based on the video data transferred from the frame memory 21 to the buffer memory. Character recognition processing and video caption erasure processing can be performed in parallel.

As the data display device, the one shown in Embodiment 1 can be used. The recording medium 400 on which the video data is written by the second data recording apparatus 100b of the present invention can be reproduced by the data display apparatus 200.
FIG. 11 is a diagram showing the effect of the image caption erasure process by the image caption erasure unit 60. As can be seen by comparing FIG. 11B and FIG. 6B, the video caption is pseudo-erased in the video displayed in the first display area 261 of the display screen of the display 260 of the data display device 200. Yes. The caption is displayed largely in the second display area 262 based on the caption text data.

The example of the data display apparatus concerning Example 4 of this invention is shown.
The data display apparatus according to the fourth embodiment takes in video data of video content in which video captions are captured, executes caption text data generation processing by character recognition of video captions, and displays the video in the first display area of the display. In addition, the device displays the caption in the second display area. The data display device 200a is assumed to be a small portable terminal. Here, for example, a multi-function mobile phone is used.

12 and 13 are diagrams schematically illustrating a basic configuration example of a data display device 200a according to the fourth embodiment of the present invention.
In FIG. 12, the recording medium 500 is not particularly limited, but a portable compact recording medium is assumed. For example, portable small recording media such as a memory stick (TM), a compact flash card (TM), a smart media card (TM), and an SD card (TM) are assumed. It is assumed that video data in a state where video captions such as foreign movies are written is recorded on the recording medium 500. In this example, it is assumed that the video data is recorded in a physical format and a logical format (for example, MPEG4 or H.264) suitable for the small recording medium 500.

The data display device 200a according to the fourth embodiment includes a video data input unit 210 as a video data input device. The video data input unit 210 is a reading device that supports the recording medium 500. A physical interface and a logical interface corresponding to the recording medium 500 are provided. The video data input unit 210 reads video data from the recording medium 500 and passes it to the video display processing unit 220.
In the example of FIG. 13, the video data input unit 210 has a function of receiving digital terrestrial broadcasting and satellite broadcasting and a function of accessing the network medium 310 such as the Internet, and has a communication interface with the network medium 310. Yes. The video data input unit 210 downloads video data from the network medium 310 one after another, takes it in, and passes it to the frame memory control unit 20. Note that the video data input unit 10 preferably has a tuning function and can perform channel selection and the like. The connection destination of the network medium 310 stores video data in which a video caption such as a foreign movie is written, and the video data can be downloaded.
For example, the user captures video data of video content such as a movie or a TV program via the application of the receiving system in accordance with a channel desired to receive terrestrial digital broadcast via the user interface of the video data input unit 210. Also, for example, video data of video content such as a movie or a TV program is taken in via a connection destination system application by connecting to the Internet wirelessly or by wire and via network communication via the Internet. It is assumed that the captured video data has a data format such as MPEG4 or H.264.

Similar to the first embodiment, the video display processing unit 220 receives the video data passed from the video data input unit 210, and stores the video data in the first area 251 of the frame memory 250 according to the display control of the display control unit 240. Expand.
The display controller 240, the frame memory 250, the first area 251, the second area 252, the display 260, the first display area 261, and the second display area 262 of the display included in the data display device 200a are as follows: It may be the same as that described in the first embodiment. As in the case of the first embodiment, the display control unit 240 controls the display area of the display 260 by controlling the writing area to the frame memory 250. Further, as in the first embodiment, the display area is displayed by adjusting the capacity of the second area 252 of the frame memory 250 for displaying captions and controlling the size of the second display area of the display to an appropriate size. The caption size can be increased to a level that is easy to read.

The data display device 200 a according to the fourth embodiment includes a character recognition unit 30. The character recognition unit 30 may be the same as that of the first embodiment. The character recognition unit 30 analyzes the image caption written as the image in the image data developed in the first area 251 of the frame memory as a figure, recognizes the character, and generates caption text data. The character recognizing unit 30 passes the generated caption text data to the caption display processing unit 230.
12 and 13, the character recognition unit 30 reads video data from the first area 251 of the frame memory. However, the character recognition unit 30 may receive video data from the video display processing unit 220. good.

  The video display processing unit 220 and the display control unit 240 perform the video data writing process to the frame memory 251 for each video frame, but the character recognition process by the character recognition unit 30 is not performed for each video frame. The video frame is sampled every period. The video caption requires a certain amount of time due to the nature of being read by the human eye, and the same video caption is attached over a plurality of frames although it is long and short. Therefore, performing character recognition processing for all frames may be a waste of resources. Here, in particular, the data display device 200a is assumed to be a small mobile terminal such as a mobile phone, and resource saving is important. Therefore, character recognition processing may be performed on frames sampled at intervals (for example, 1-second intervals or 2-second intervals) that do not cause the video caption to switch twice or more.

  The caption display processing unit 230 may be the same as that of the first embodiment. Here, the caption display processing unit 230 receives the caption text data from the character recognition unit 30, and in accordance with the display control of the display control unit 240, the caption text data is stored in the second frame memory 250. The area 252 is expanded. When the caption text data is expanded to the second area 252 of the frame memory 250, the caption text data can be displayed in accordance with the capacity of the second area 252 (the size of the second display area of the display 260). Adjust the number of character points to expand.

As described above, the video data is stored in the first area 251 of the frame memory 250 and the caption text data is stored in the second area of the frame memory 250 under the control of the video display processing unit 220, the caption display processing unit 230, and the display control unit 240. Since the image is written separately in the area 252, the video is displayed in the first display area 261 of the display 260 and the caption is displayed in the second display area 262 of the display 260. Here, since the displayed caption is displayed in a large size in accordance with the size of the second display area 262, the caption is easy to read.
The video and caption displayed on the display 260 of the data display device 200a are the same as those shown in FIG.

The example of the data display apparatus concerning Example 5 of this invention is shown.
Similar to the data display device shown in the fourth embodiment, the data display device of the fifth embodiment takes in video data of video content in which the video caption is reflected, and performs processing for generating caption text data by character recognition of the video caption itself. This is a device that executes and displays video in the first display area of the display and captions in the second display area, but the data display device of Example 5 erases the video caption remaining in the video. It also has functions. The data display device of the fifth embodiment is also assumed to be a small portable terminal, and here, for example, a multi-function mobile phone is used.

14 and 15 are diagrams schematically illustrating a basic configuration example of a data display device 200b according to the fifth embodiment of the present invention.
In the configuration example of FIG. 14, each component of the video data input unit 210, the video display processing unit 220, the caption display processing unit 230, the character recognition unit 30, the display control unit 240, the frame memory 250, and the display 260 is described in the embodiment. 4 may be the same as that shown in FIG. In the configuration example of FIG. 14, the character recognition unit 30 reads video data from the first area 251 of the frame memory. However, the character recognition unit 30 may receive video data from the video display processing unit 220.
As shown in FIG. 15, as in FIG. 13 of the fourth embodiment, the video data input unit 210 includes a communication interface, has a function of accessing the network media 310, and downloads video data from the network media 310. There may be.

The video caption erasure unit 60 is a part that searches for video captions in the video data developed in the first area 251 of the frame memory 250 and erases the video captions from the video.
It should be noted that the video caption search process may be performed by the video caption erasing unit 60, or the character recognition unit 30 may be notified of the video caption area information obtained in the search process during the character recognition process. good. In the latter case, although not shown in FIG. 14, the video recognition area information is notified from the character recognition unit 30 to the video caption deletion unit 60.
As described in the third embodiment, the erasing process of the video caption reflected in the video ideally means that the video caption is restored to the original video before being written in the video. Then, it is assumed that the original video of the portion covered with the video caption is estimated from the video around the video caption and the pseudo-erasure process is performed.

When character recognition processing and video caption erasure processing are performed based only on video data developed in the frame memory without using a buffer memory or the like, the video caption erasure processing of the video caption erasure unit 60 is performed by the character recognition unit 30. Need to be done after the character recognition process by. When the character recognition unit 30 or the video caption erasure unit 60 is provided with a buffer memory (not shown), the character recognition process or the video caption erasure process can be performed based on the video data transferred from the frame memory 250 to the buffer memory. Character recognition processing and video caption erasure processing can be performed in parallel.
The video and caption displayed on the display 260 of the data display device 200b are the same as those shown in FIG. 11B, and the video caption is displayed in the video displayed in the first display area 261 of the display screen of the display 260. Pseudo erased.

The example of the data display apparatus concerning Example 6 of this invention is shown.
The data display device according to the sixth embodiment captures video data of video content in which video captions are captured, expands the video caption portion at a vertical / horizontal magnification that matches the size of the second display area 262, and displays the video on the display. This is a device for displaying an enlarged video caption in the second display area in the first display area. Caption text data is not generated, and the video caption is expanded as a video. Unlike the data display device described in any one of the first to fifth embodiments, since the character recognition processing of the video caption is not performed, the processing load is small, and high-speed processing can be performed with few resources.
The data display device of the sixth embodiment is also assumed to be a small portable terminal, and here, for example, a multi-function mobile phone is used.

FIG. 16 or FIG. 17 is a diagram schematically illustrating a basic configuration example of a data display device 200c according to the sixth embodiment of the present invention.
In the configuration example of FIG. 16, the constituent elements of the video data input unit 210, the video display processing unit 220, the display control unit 240, the frame memory 250, the display 260, and the video caption erasure unit 60 are shown in FIG. It may be the same as shown.
As shown in FIG. 17, as in FIG. 15 of the fifth embodiment, the video data input unit 210 has a communication interface, has a function of accessing the network medium 310, and downloads video data from the network medium 310. There may be.

  The caption display processing unit 230a analyzes the video caption written as video in the video data expanded in the first area 251 of the frame memory as a figure, recognizes the video caption area in the video data, and performs display control. In accordance with the display control of the unit 240, the video data in the video caption area is duplicated and expanded in the second area 252 of the frame memory while being enlarged at a vertical / horizontal magnification that matches the size of the second display area 262.

FIG. 18 is a diagram schematically showing the concept of video caption enlargement processing by the caption display processing unit 230a.
FIG. 18A shows an image when the image data recorded on the recording medium 500 or the image data downloaded from the network medium 310 is displayed as it is. This video data is expanded in the first area 251 of the frame memory 250 by the video display processing unit 220. A video caption is written at the bottom of the video.
First, the caption display processing unit 230a searches a video caption area including a graphic pattern of the video caption in the video developed on the first area 251 of the frame memory. Note that it is preferable to have a learning function for the search. This is because the video caption is usually written at a certain location such as the lower edge of the video screen, so that a high learning effect is obtained and there is no need to search the entire video screen every time.

Next, the caption display processing unit 230a duplicates and develops the video data in the video caption area in the second area 252 of the frame memory according to the display control of the display control unit 240. At this time, the video in the video caption area is displayed. The data is expanded in the vertical direction and the horizontal direction according to the size of the second display area, and duplicated and expanded. For example, assume that the number of dots in the vertical direction of the second display area 262 is A0 and the number of dots in the horizontal direction is B0. These dot numbers are constant. The number of dots in the video caption area in the video frame read from the recording medium varies from video frame to video frame. However, when the number of vertical dots in a video frame is A1 and the number of horizontal dots is B1, The enlargement ratio is A0 / A1, and the horizontal enlargement ratio is B0 / B1. The video caption area is enlarged and displayed in the second area 252 of the frame memory while being enlarged at the vertical and horizontal enlargement ratios, so that the video caption is enlarged according to the size of the second display area 262 of the display. .
FIG. 18B shows a state in which the video caption is enlarged and displayed in the second display area. Since the image is enlarged, the background image is also displayed in an enlarged form. In this configuration example, the data display device 200c includes a video caption deletion unit 60, and a video with the video captions deleted is displayed in the first display area of the display.

Note that the caption display processing unit 230a may capture the video caption from the first area 251 of the frame memory for each video frame, and may perform the video caption enlargement process. You may do it. As described in the first embodiment, the video captions are read by the human eye, and thus the same video captions are attached to a plurality of frames although they are long and short. Therefore, it may be a waste of resources to perform the enlargement process for all the frames and perform the write process in the second area 252. Therefore, enlargement processing and writing processing may be performed on frames sampled at intervals (for example, 1-second intervals or 2-second intervals) that do not cause the video caption to switch twice or more.
In the above description, the caption display processing unit 230 a reads video data from the first area 251 of the frame memory. However, the caption display processing unit 230 a may receive video data from the video display processing unit 220.

In the description of the above embodiment, the caption displayed in the second display area of the display is always displayed based on the caption text data. However, the user can select the second display area. It is possible to select whether or not to display captions. Display / non-display selection information may be given to the caption display processing unit 230 via a user interface (not shown), and the caption display processing unit 230 may control writing to the second area 252 of the frame memory.
Also, it is possible to specify and adjust the size of the caption displayed in the second display area of the display based on the caption text data, to specify and adjust the font, and to specify and adjust the color. Since the display is based on the caption text data, not the video caption written in the video, the adjustment may be made by the caption display processing unit 230 and then written into the second area 252 of the frame memory.

The data recording apparatus of the present invention can be applied to AV equipment used for the purpose of reading video data from one recording medium and writing it to another recording medium. For example, a DVD drive and a drive for a small recording medium such as a memory stick (TM) or an SD card (TM) are provided, and video data recorded on a large recording medium such as a DVD is converted into a small recording medium. It can be applied to a DVD player for recording.
Further, the data recording apparatus of the present invention has a reception function and can be applied to AV equipment used for downloading video data from a network medium and writing it to the recording medium. For example, it has a reception function for terrestrial digital broadcasting, satellite broadcasting, the Internet, etc., a recording function for temporarily recording received video data on a built-in hard disk, etc., and a function for updubbing recorded video data to a small recording medium It can be applied to other AV equipment.
The data display device of the present invention can be applied to a portable terminal equipped with a small recording medium drive and a small display. For example, the present invention can be applied to a mobile phone with a liquid crystal display equipped with a drive for a small recording medium such as a memory stick (TM) or an SD card (TM). The present invention can be applied to a mobile phone or the like that reads video data in which video captions such as foreign movies recorded on a small recording medium are written and reproduced and displayed on a small display.
Further, the data display device of the present invention can be applied to a portable terminal or the like that has a function of downloading video data from a network medium with a receiving function and displaying it on a small display. For example, it can be applied to a mobile phone having a reception function such as terrestrial digital broadcasting, satellite broadcasting, and the Internet, and a function of reading video data in which video captions such as foreign movies are written and reproducing and displaying them on a small display. it can.

1 schematically shows an example of a basic configuration of a data recording apparatus according to Embodiment 1 of the present invention. FIG. 6 is a diagram schematically illustrating another example of the basic configuration of the data recording apparatus according to the first embodiment of the invention. The figure which illustrates the outline | summary of the process in the character recognition part 30 typically. FIG. 1 is a diagram schematically illustrating a basic configuration example of a data display device 200 according to a first embodiment of the invention. The figure which shows typically the other example of the basic composition of the data display apparatus 200 concerning Example 1 of this invention. The figure which shows a mode that a caption is largely displayed according to the magnitude | size of the 2nd display area 262. The figure which shows an example of the position of the caption display surface at the time of securing the video display surface 261 by placing the small display 260 vertically. The figure which shows an example of the position of the caption display surface at the time of securing the video display surface 261 by placing the small display 260 horizontally The figure which shows typically the example of a basic composition of the data recording device concerning Example 2 of this invention. The figure which shows typically the example of a basic composition of the data display apparatus concerning Example 3 of this invention. The figure which shows the effect of the image caption deletion process by the image caption deletion part 60 The figure which shows typically the example of a basic composition of the data display apparatus concerning Example 4 of this invention. The figure which shows typically the other example of the basic composition of the data display apparatus concerning Example 4 of this invention. The figure which shows typically the example of a basic composition of the data display apparatus concerning Example 5 of this invention. The figure which shows typically the other example of the basic composition of the data display apparatus concerning Example 5 of this invention. The figure which shows typically the example of a basic composition of the data display apparatus concerning Example 6 of this invention. The figure which shows typically the other example of the basic composition of the data display apparatus concerning Example 6 of this invention. The figure which shows typically the concept of the expansion process of the image caption by the caption display process part 230a.

Explanation of symbols

10 video data input unit 20 frame memory control unit 21 frame memory 30 character recognition unit 31 character pattern DB
40 Data format conversion unit 50 Writing unit 60 Video caption erasing unit 100, 100a, 100b Data recording device 200, 200a, 200b, 200c Data display device 210 Video data input unit 220 Video display processing unit 230, 230a Caption display processing unit 240 Display Control unit 250 Frame memory 251 First area 252 Second area 260 Display 261 First display area 262 Second display area 291 Upper casing 292 Lower casing 293 Speaker 294 Microphone 295 Key input section 296 Antenna 300 First Recording media 400 Second recording media 500 Recording media

Claims (7)

A data recording apparatus for capturing video data and recording it on a recording medium,
A video data input section for capturing video data;
A frame memory control unit for developing video data captured from the video data input unit in the frame memory;
The video caption written as video in the video data developed in the frame memory is analyzed as a figure, character recognition is performed, and caption text data and correspondence information between the caption text data and the video data are obtained. A character recognition unit to be generated;
A data recording apparatus comprising: a writing unit that receives the video data from the frame memory, receives the caption text data and the correspondence information from the character recognition unit, and writes them to the recording medium. A data recording apparatus for capturing video data and recording it on a recording medium,
A video data input section for capturing video data;
A frame memory control unit for developing video data captured from the video data input unit in the frame memory;
The video caption written as video in the video data developed in the frame memory is analyzed as a figure, character recognition is performed, and caption text data and correspondence information between the caption text data and the video data are obtained. A character recognition unit to be generated;
A data format conversion unit for converting the video data expanded in the frame memory into a desired data format;
A data recording apparatus comprising a writing unit that receives video data after the data format conversion from the data format conversion unit, receives the caption text data and the correspondence information from the character recognition unit, and writes them to the recording medium. The video data expanded in the frame memory includes a video caption erasure unit that fills the inside of a character outline of the video caption with gradation between pixels of opposing character outline edges and erases the video caption. The data recording apparatus according to 1 or 2. A data display device for displaying video content,
A video data input section that captures video data, caption text data, and corresponding information;
A display for displaying video content;
A frame memory, wherein the display area of the display is divided into at least two display areas of a first display area and a second display area, and a first area and a second area of the frame memory corresponding to each display area A display control unit that controls data writing to the display area and controls display in each display area;
In accordance with display control of the display control unit, a video display processing unit that reads the video data captured from the video data input unit and develops the video data in a first area of the frame memory;
In accordance with display control of the display control unit, the caption text data captured from the video data input unit and the correspondence information are read, and the video data developed in the first area of the frame memory based on the correspondence information A caption display processing unit that selects caption text data corresponding to and expands it in the second area of the frame memory,
A data display device in which the video is displayed in a first display area of the display and the caption is displayed in a second display area of the display. A data display device that captures video data and displays video content,
A video data input section for capturing video data;
A display for displaying video content;
A character recognition frame memory, a video display frame memory, a caption display frame memory,
A control unit having a function of developing a video data stream captured from the video data input unit into the video display frame memory for each frame, and a function of sampling the video data stream at a predetermined cycle and developing the video data stream into the character recognition frame memory When,
A video display control unit for controlling video display on the first display area of the display based on the data developed in the video display frame memory;
A character recognition unit that analyzes a video caption written as a video in the video data developed in the character recognition frame memory as a figure, performs character recognition to generate caption text data, and
A data display device comprising: a caption display control unit that controls display of a caption text in a second display area of the display based on caption text data recognized by the character recognition unit. A video caption erasing unit that fills the inside of a character outline of a video caption in video data expanded in the video display frame memory with gradation between pixels of opposing character outline edges, and erases the video caption;
The data display device according to claim 5, wherein an image from which the image caption is deleted is displayed in the first display area of the display, and the caption is displayed in the second display area of the display. A data display device that captures video data and displays video content,
A video data input section for capturing video data;
A display for displaying video content;
A frame memory for video display, a frame memory for caption display,
A control unit having a function of expanding the video data stream captured from the video data input unit into the video display frame memory for each frame;
A video display control unit for controlling video display on the first display area of the display based on the data developed in the video display frame memory;
The video caption written as video in the video data expanded in the video display frame memory is analyzed as a figure to recognize the video caption area in the video data, and the video data in the video caption area is displayed on the display A caption display control unit that replicates and expands in the caption display frame memory while expanding at a vertical and horizontal magnification according to the size of the second display area;
A video caption erasing unit that fills the inside of a character outline of a video caption in video data expanded in the video display frame memory with gradation between pixels of opposing character outline edges, and erases the video caption;
A data display device in which an image from which the image caption has been erased is displayed in the first display area of the display, and the caption enlarged at the aspect ratio is displayed in the second display area of the display.

Images