JPH0686222A - Still picture reproducing device - Google Patents

Abstract

PURPOSE:To obtain a still picture reproducing device capable of retrieving arbitrary still picture information from a still picture information storage medium for an electronic book application, etc., without providing position information such as a page number, etc., and clear identification information such as a keyword, etc. CONSTITUTION:A reproducing means 2 reproduces the partial areas of plural pieces of still picture information stored in the still picture information storage medium 1 successively, and outputs a still picture reproducing signal according to a reproduction control signal in the retrieval reproduction control operation of a control means 5. A still picture accumulation storage means 3 updates the update area of held holding still picture information by receiving the input of the still picture reproducing signal of the partial area, and reads the holding still picture information at every update, and outputs the still picture reproducing signal in screen unit to a display means 4. The display means 4 displays the partial areas of the plural pieces of still picture information successively and at high speed. Thereby, it is possible to recognize the summary (constituent of still picture information, appearance frequency information of specific color, etc.) of respective still picture information by a user and to retrieve the still picture information that is a retrieval target.

Description

Detailed Description of the Invention

[0001]

[Industrial application] Still images reproduced from a storage medium that stores still images such as computer graphics and natural images as digital data, and the still image digital data is stored in an image memory and displayed on a display device. Reproduction device

[0002]

2. Description of the Related Art As a still picture reproducing apparatus for reproducing still picture digital data, a CD-ROM (Compact Disc Read On) is used.
There is a built-in personal computer. C
The D-ROM is used as a storage medium for a wide range of media such as voices, still images, characters, and program data.

In recent years, applications have been devised that handle a wide range of media recorded on these CD-ROMs in an integrated manner. These are collectively called multimedia applications, and are produced in the fields of games, presentations, and e-books. Among them, the electronic book application is a multimedia application that electronically represents a book, which is a paper medium, in a computer, and is composed of still image information corresponding to pages of the book.

An example of the conventional still picture reproducing apparatus will be described below with reference to the drawings. Here, an example of a still image reproducing device for reproducing the electronic book application will be described. FIG. 4 shows the structure of a conventional still image reproducing apparatus. In FIG. 4, reference numeral 41 is a CD-ROM as an information storage medium, and the digital data string of a plurality of still image information constituting the electronic book application is an EFM.
It is an optical disc recorded by being modulated (Eight to fourteen modulation).

A reproducing means 42 reproduces the optical disc 41 in accordance with a command signal and outputs a still picture reproducing signal, and 43 stores the inputted still picture reproducing signal in a unit of still picture information (hereinafter referred to as one field). Still image storage / storage means that is an image memory for output. Reference numeral 44 is a display unit which is a display device for converting the input 1-field still image reproduction signal into a still image output signal and outputting and displaying it.

The operation of the still picture information reproducing apparatus configured as described above will be described below. When the user performs an operation of displaying an arbitrary page of the electronic book application from the outside, a reproduction start command including information such as a page number, which is position information, is input to the reproducing means 42 as a command signal. In accordance with the instruction of the command signal input from the outside, the reproducing means 42 seeks to the corresponding address of the optical disc 41 corresponding to the page number and reproduces the instructed still image information.

This reproduced signal is an EFM demodulation (Eight to f
Ourteen demoduration) is performed and error correction processing is performed, and the result is output as a still image reproduction signal which is still image digital data. The still picture reproduction signal output from the reproduction means 42 is input to the still picture accumulation / storage means 43, data of one field required for image display is accumulated and held, and then the still picture reproduction signal is read in units of one field. And output. The one-field still image reproduction signal output from the still image storage / storage means 43 is input to the display means 44 and digital-analog converted (hereinafter referred to as D / A conversion) to be converted into a video signal which is a still image output signal. One-field still image information is displayed on the display.

With the above operation and procedure, the user can see the still image information of the desired page on the screen of the display. By operating the command to see the next page, the still image information on the next page is also displayed on the display, and the electronic book can be read like a book on paper media.

[0009]

However, in the above-mentioned configuration, the reproduction can be performed in order from the first page, but when searching for a specific page, the reproduction means as the position information such as the page number is used as the command signal. There is a problem that it is necessary to input in 42, and it is impossible to search for a page for which the user does not recognize the position information.

As a search means which does not require position information, a method of adding a keyword to each page,
A method is considered in which high-speed reproduction is performed in order from the top still image information. These methods also have the following problems. In the case of the search method using the former keyword, it is necessary to add the keyword for each page to the still image information and record it on the optical disc 41 in advance. In addition, the problem that the user needs to recognize the keyword for the search and the user needs to recognize the clear identification information for the search is the same.

The latter method of reproducing and searching still image information sequentially from the beginning does not require the user to store identification information such as page numbers and keywords for the search target, and is extremely effective as a search means. Is. However, in order to display one piece of still image information, the reproduction processing time in the reproducing means 42 and the time for accumulating the reproduced still image reproduction signal in the still image accumulating / storing means 43 until one image is required. is there. This time is based on the YELLOW BOOK standard CD-
In the case of a ROM, the data transfer rate is 150 Kbyte / sec, and it takes about 2 to 3 seconds to display 300 Kbyte of still image information, including the disk access time. Since the processing time of still image information increases in proportion to the data amount of still image information, in the case of a color still image or a natural image still image with a large amount of data, it takes a long time to process one still image information itself. Therefore, this search method cannot be used.

In view of all the problems of the present invention, the user does not need clear identification information of the page to be searched, and ambiguous storage of the page (components of still image information, appearance frequency information of a specific color, etc.) It is an object of the present invention to provide a still image reproducing apparatus that can perform a search in addition to searching for still image information having a large amount of data per one.

[0013]

In order to solve the above problems, a still picture reproducing apparatus of the present invention is a still picture reproducing apparatus for reading and displaying still picture information from a still picture information storage medium for storing still picture information. There is a reproduction means for reading out still picture information from the still picture information storage medium, a display means for displaying a still picture based on the read still picture information, and a predetermined range in one still picture screen to be displayed. And a control means for controlling.

The still picture reproducing apparatus further comprises input means for receiving an instruction input of the display speed of the still picture, and the control means inversely proportionally sets the size of the predetermined range in response to the instruction input from the input means. Is configured to increase or decrease.

[0015]

The still image reproducing apparatus of the present invention having the above structure
As for the still image information stored in the still image information storage medium, the still image information in a predetermined range is read by the reproducing means. The still image information reproduced by the reproducing means is displayed by the display means. At this time, the control means designates a predetermined range of one screen of the still image to be displayed. By repeating the above operation, still images in a predetermined range are displayed on the display means one after another.

Further, the control means increases or decreases the size of the partial area in inverse proportion to the display speed of the display means in accordance with the instruction input from the input means. As a result, the display means displays the large partial area in the page when the display switching is slow, and displays the small partial area in the page when the switching is fast.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a still image reproducing apparatus of the present invention will be described below with reference to FIG.
The description will be made using 3 to 3. It is assumed that the electronic book application is recorded on the still image information storage medium used in this embodiment. FIG. 1 is a block diagram showing the configuration of a still image reproducing apparatus according to an embodiment of the present invention. In FIG. 1, 1
Is a CD-ROM as a still image information storage medium, in which a digital data string which is still image information is subjected to data compression processing, EFM modulated and recorded.

Reference numeral 2 is a reproducing means, which reproduces the still picture information storage medium 1 in accordance with a reproduction control signal, and outputs a still picture reproduction signal which is digital still picture data subjected to EFM demodulation, error correction processing and data expansion processing. . Numeral 3 is a still image storage / storage means, which is an image memory of one field, to which a still image reproduction signal is input from the reproduction means 2 and, if an update area designation signal is input, is stored in the update area of the designated image memory. If there is no input, the entire area of the image memory is updated, and an accumulation operation for holding this as still image information that is still image data of one field and an output operation for reading and outputting the accumulated retained image information are performed. .

A display means 4 receives a still picture reproduction signal from the still picture storage / storage means 3, converts it into a still picture output signal which is a video signal, and displays it on a display device. Reference numeral 5 is a control means, which is composed of a microprocessor and its operation program, and outputs a reproduction control signal and an update area designation signal in accordance with the input of a command signal and a search speed designation signal. This command signal is a signal that is input from the outside and indicates whether to perform search playback or playback. The control means 5 performs a search / playback control operation if the command signal is a search / playback operation, and otherwise performs a playback control operation. More specifically, in the reproduction control operation, a reproduction control signal for giving an instruction corresponding to a command signal such as reproduction start and stop and reproduction of a specific page is output to the reproduction means 2. Still image information storage medium 1 in the search / playback control operation
A reproduction control signal is output to the reproduction means 2 for instructing to continuously read out and reproduce and output only the partial areas of each of the plurality of still picture information recorded in the above, and update for designating the update area of the held still picture information. The area designation signal is output to the still image storage / storage means 3.

Further, the search speed designation signal is a signal which is input from the outside and indicates the switching speed of the display of the display means during the search and reproduction control operation. The control means 5 calculates the partial area of the still image information designated by the reproduction means 2 by the reproduction control signal in accordance with the search speed designation signal. In the calculation of the partial area, the range of the partial area is determined in inverse proportion to the search speed. Therefore, if the search speed decreases, the range of the partial area increases, and if the search speed increases, the range of the partial area decreases. In the present embodiment, the partial area of the still picture information read by the reproducing means 2 and the update area of the still picture information stored in the still picture accumulating / storing means are logically the same position areas on the image. In this case, it is a partial area including the right end of the still image information.

In the present embodiment, the still image information storage medium 1 is also used.
The color still image information of about 400 sheets is recorded as an electronic book application in the CD-ROM. The contents of the e-book application are cartoons, and each is 20
Contains multiple episodes of manga that complete before and after the page. The operation of the still image reproducing apparatus of the present invention configured as described above will be described below with reference to FIGS. 1, 2 and 3.

(1) First, the operation of the still image reproducing apparatus for normal reproduction which is not search reproduction will be described. When the user instructs the reproduction of the leading still image of the electronic book application by pressing the reproduction start key of the control panel (not shown), the reproduction start command signal is input to the control means 5. In response to this, the control means 5 outputs a reproduction control signal for instructing the start of reproduction of the CD-ROM, which is the information storage medium 1, to the reproduction means 2 to perform the reproduction control operation. The reproduction means 2 instructed to start reproduction reads and reproduces the still image information recorded at the head of the information storage medium 1. The read still image information is subjected to EFM demodulation and error correction processing, further compressed data expansion processing, and output as a still image reproduction signal which is still image digital data. Reproduction means 2
Still image storage / storage means 3 to which a still image reproduction signal is input from
Performs an accumulation / storage operation of accumulating a still image reproduction signal in the video memory in units of one field and storing it as retained still image information. Further, in the still image storage / storage means 3, an output operation is performed in which the stored held still image information is read and output as a still image reproduction signal in units of one field. The display unit 4 to which the still image reproduction signal is input from the still image storage / storage unit 3 performs D / A conversion on the still image reproduction signal, converts the still image output signal to a still image output signal, and displays the image on the display device. . This video display is the still image display section a shown in FIG.
1 field is displayed over the entire area (not only the area b, and there is no half-turned still image). As a result of the processing and procedure described above, the user can see the display of the first page of the electronic book application. Reproduction from the next page onward is performed by the same process. Further, in the subsequent reproduction of the still image information, since the update region designation signal is not input to the still image storage / storage means 3, the update region is not designated, and the entire region of the image memory is the still image of the next still image information. It will be updated with the reproduction signal.

(2) Next, regarding the operation of the still image reproducing apparatus at the time of search and reproduction, the operation will be described with and without the input of the search speed designation signal from the outside. (2.1) First, the operation when the search speed designation signal is not input will be described. When a user presses a search key on a control panel (not shown) to search for a specific comic recorded in the electronic book application, a command signal for instructing search reproduction is input to the control means 5. The control means 5 instructed to perform the search / playback performs the search / playback control operation. In the search / playback control operation, the control means 5 instructs the playback means 2 to continuously play back and output only the partial areas of each of the plurality of still picture information recorded in the still picture information storage medium 1. And outputs an update area designation signal for designating an update area of the held still image information to the still image storage / storage means 3. At this time, the relationship between the partial area of the still image information instructed by the reproduction control signal and the update area of the held still image information instructed by the update area designation signal is the logically same position area of the still image information. ,
In the case of the present embodiment, it is an area including the right end portion of the still image information.

Reproduction means 2 according to the input reproduction control signal
Then, the plurality of still image information stored in the still image information storage medium is continuously reproduced only in the partial areas. The reproduced partial areas are subjected to the same processing as the operation during normal reproduction, and the respective still image reproduction signals are sequentially output. In still picture accumulation / storage means 3 to which still picture reproduction signals of a plurality of partial areas are successively input, accumulation / storage operation and output operation are performed for still picture reproduction signals of respective partial areas. In the accumulation / storage operation, the still image reproduction signal is accumulated and held in the update area of the image memory designated by the update area designation signal. When the storage in the update area is completed, the output operation is performed, and the held still image information which is the one-field unit still image information held in the entire image memory including the update area is read and the still image is reproduced. The signal is output.

In the display means 4 to which the still picture reproduction signal is input, the same processing as in the normal reproduction is performed, the still picture reproduction signal is converted into a still picture output signal, and the image is displayed on the display device. In the case of the present embodiment, the held still image information in which the book is half-opened is displayed on the still image display portion during search and reproduction, and the page update area portion b sequentially displays the right end portion of each page.

FIG. 2 shows a display example of the display device of the display means 4 during search and reproduction. 21 is a display device, 2
Reference numeral 2 is a video display portion, a is a still image display portion, and b is a page update area portion. In the case of the present embodiment, a still image in which the page is half-turned is displayed on the still image display portion a, and the page update area portion b is located in an area including the right edge of the page. The held still image information is displayed on the still image display section a of the image display unit 22, and the update area of the held still image information is displayed on the page update area section b.

Through the above-described procedure and operation, the user is provided with a video (hereinafter referred to as flip search) in which the right end area of the page of the electronic book displayed as a video is continuously updated at high speed during the search and reproduction, and the page is advanced. Provided. The flipping search is sufficient as a means of providing the user with an outline of each still image information (the components of the still image information and the frequency of appearance of a specific color), and the user has a vague outline of the still image. The target still image information can be retrieved only by storing the.
In the present embodiment, the cartoon to be searched can be searched using ambiguous identification information such as the style of the cartoon such as color usage or the characters of the cartoon that is a constituent element.

(2.2) Next, the operation of the still image reproducing apparatus at the time of search reproduction when a search speed designation signal is input will be described. In this embodiment, a case will be described in which the user gives an instruction to reduce the search speed. When the user gives an instruction to decrease the search speed by pressing the search speed change key on the control panel (not shown) during the above-mentioned flipping search, the search speed designation signal including the changed search speed information is displayed. It is input to the control means 5.

The control means 5 calculates the partial area of the still picture information reproduced by the reproduction means 2 according to the search speed designated by the search speed designation signal. The partial area calculated by the control means 5 increases / decreases in inverse proportion to the search speed. Therefore, the partial area of the still image information to be reproduced increases as the search speed decreases. After the calculation of the new partial area, the control means 5 outputs a reproduction control signal indicating the new partial area to the reproducing means 2,
An update area designation signal designating an updated area of the held still image information corresponding to the new partial area is output to the still image storage / storage means 3.

Reproducing means 2 according to the inputted reproduction control signal.
Expands the partial area of the still image information to be played and plays
The still image reproduction signal is output by performing the same processing as during normal reproduction. The processing in the still image storage / storage means 3 and the display means 4 is similar to that in the case where the search speed designation signal is not input, and therefore detailed description thereof will be omitted. FIG. 3 shows the present embodiment.
FIG. 9 is a state change diagram showing a change in the data update area of the image memory of the still image storage / storage unit 3 when the search speed is reduced to the 1st to n-th still image information during search reproduction. Three
1 is an image memory at the time of reproducing the first partial area of still image information, 311 is an update area of the image memory 31, 32 is an image memory at the time of reproducing a partial area of the second still image information, and 321 is an update of the image memory 32. Area, 33 is the image memory at the time of reproducing the third partial area of the still image information, 331 is the image memory 3
3 is an update area, 34 is an image memory at the time of reproducing the partial area of the n-th still image information, and 341 is an update area of the image memory 34. When the search speed decreases in 1 to n stages, the reproduction means 2
The partial area of the still image information reproduced by is increased in 1 to n stages in inverse proportion to the decrease in the search speed, and the range of the updated area of the held still image information is correspondingly increased. Therefore, the area of the page update region portion b displayed on the display device 21 shown in FIG. 2 increases in 1 to n steps, and the display interval speed of the held still image information increases in 1 to n steps. Therefore, in the flip search for a plurality of still image information, the video information of the update area per page provided to the user increases, and the display interval of each page becomes longer.

By the series of operations and procedures after the input of the search speed designating signal described above, the video information in the update area of the page can be increased and the display interval of the page can be lengthened in the search and reproduction, and more detailed search can be performed. Can be done. The user can perform a more detailed search after knowing the approximate location where the page to be searched is stored by a quick flip search.

In the present embodiment, when the user searches for an arbitrary page of an arbitrary cartoon out of a plurality of recorded cartoons, the user searches the storage position of the cartoon to be searched by high speed flip search. Then reduce the search speed to 1
Each page can be identified in detail and any page can be searched. In the embodiment, the partial area of the still picture information stored in the still picture information storage medium 1 reproduced by the reproducing means 2 during the search / reproduction control operation of the control means 5 is the area including the right end, but the left end. May be included in the area. Further, a region including the right end portion of the still image information and a region including the left end portion of the still image information may be alternately reproduced.

Although the still image information storage medium 1 is a CD-ROM which is an optical disk in the embodiment, it is not limited to this as long as it can store still image information.
For example, a magneto-optical disk, a magnetic disk, a semiconductor memory, or a magnetic tape may be used.

[0034]

As described above, according to the present invention, with respect to a plurality of still picture information recorded, the reproducing means 2 is instructed by the control means 5 and the plurality of still picture information recorded in the still picture information storage medium 1 respectively. By continuously reproducing only partial areas, a plurality of partial areas of still image information can be continuously displayed at high speed on the display unit 4, and an outline of each still image information (frequency of appearance of constituent elements of a still image or specific color) Information) can be provided to the user at high speed. Therefore, the user does not need clear identification information of the search target page such as a keyword or position information, and there is an effect that the still image information of the search target can be searched by storing an ambiguous outline of the page.

In addition, even in the case of still image information having a large amount of data, since the partial area having a small amount of data is reproduced, the processing time of the reproducing means 2 and the still image accumulating and storing means 3 can be shortened
You can search fast. Further, by applying the invention according to claim 2, the range of the partial area of the still image information reproduced by the reproducing means 2 during the search reproduction control operation of the control means 5 is inputted from the outside by a search speed designation signal. Identify when the user needs more outlines of still image information in a flip search,
It is possible to change the display interval and the amount of video information per page that are sufficient for recognition, and it is possible to perform a more detailed search.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a still image reproducing apparatus according to a first embodiment of the present invention.

FIG. 2 is a display example of a display device of display means 4 at the time of search and reproduction in the embodiment.

FIG. 3 shows a search speed of 1 to 1 during search and reproduction in the same embodiment.
FIG. 7 is a state change diagram showing a change in the data update area of the image memory of the still image storage / storage unit 3 when the number of images is decreasing toward the n-th still image information.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 still image information storage medium 2, 42 reproduction means 3, 43 still image storage / storage means 4, 44 display means 5 control means 21 display device 22 image display section a still image display section b page update area section 31 to 34 image memory 311 , 321, 331, 341 update area

Continuation of front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location H04N 5/907 B 7916-5C 5/91 J 4227-5C

Claims (2)

[Claims] 1. A still image reproducing apparatus for reading and displaying still image information from a still image information storage medium storing still image information, comprising: a reproducing unit for reading the still image information from the still image information storage medium. A still image reproducing apparatus comprising: a display unit for displaying a still image based on the issued still image information; and a control unit for designating a predetermined range in one screen of the still image to be displayed. 2. The still image reproducing apparatus further comprises input means for receiving an instruction input of a display speed of a still image, and the control means inversely proportional to the predetermined range of the predetermined range in response to an instruction input from the input means. The still image reproducing apparatus according to claim 1, wherein the size is increased or decreased.