JPH05181109A - Electronic album device - Google Patents

Abstract

PURPOSE:To provide an electronic album device capable of much more easily reproducing and enjoying a moving picture and a sound which are kept as a video library than heretofore. CONSTITUTION:A user easily views the desired moving picture several times by mounting plural liquid crystal display means 33A-33D on housings 31 and 32 incorporating a decoding means which decodes the moving picture data which are high-efficiently encoded and stored in a storage means and displaying the moving picture stored in the card type storage means 7A-7D on the plural liquid crystal display means 33A-33D when the storage means 7A-7D are mounted in the housings 31 and 32, and also he enjoys the sight of the moving picture in the similar sense as he watches a silver salt photograph album by simultaneously viewing the pictures on other plural liquid crystal display means.

Description

Detailed Description of the Invention

[0001]

[Table of Contents] The present invention will be described in the following order. Field of Industrial Application Conventional Technology Problem to be Solved by the Invention Means for Solving the Problem (FIG. 2) Action (FIG. 6) Example (FIGS. 1 to 6) (1-1) Overall Configuration (FIG. 1) And FIG. 2) (1-2) Configuration of download device (FIGS. 1 and 3) (1-3) Configuration of electronic album (FIGS. 2 and 4) (2) Operation of the embodiment (FIGS. 5 and 6) (3) Effect of Example (4) Other Example Effect of Invention

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic album device, and is suitable for application to, for example, a device for reading a moving image compressed by high efficiency encoding from a memory card and displaying it on a liquid crystal display.

[0003]

2. Description of the Related Art Conventionally, an image taken by a video tape recorder integrated with a camera is often watched once and then stored as it is as a video library. For this reason, many tape cassettes for storage that are not viewed even if taken are stored in a video library in most cases.

It is thought that the video library can be used more effectively if the images stored in the tape cassette can be enjoyed as a moving image with audio just like looking at an album photo. Be done.

[0005]

However, even if one tries to view a movie as if it were an album, the video captured by the video camera is recorded on a magnetic tape. The work was complicated even if I wanted to play back only the specific scene I liked and watch it again.

Further, since a tape cassette reproducing device and a monitor are required for viewing recorded images, it is necessary to go to a place where there is a video deck each time to view the image. It is considered that the frequency of secondary reproduction is extremely low because the images stored in this way cannot always be viewed easily.

The present invention has been made in consideration of the above points, and proposes an electronic album device which can more easily reproduce and enjoy moving pictures and sounds stored in a video library as compared with conventional ones. It is what

[0008]

In order to solve such a problem, in the present invention, a plurality of liquid crystal display means 33A-33 are provided.
D and decoding means (15, 17, 1) for decoding the high-efficiency coded moving image and supplying it to the liquid crystal display means 33A to 33D.
8, 22, 23, 25-29, 39, 40), and a plurality of liquid crystal display means 33A-33D and decoding means (15, 1).
7, 18, 22, 23, 25-29, 39, 40) and housings 31, 32 for mounting the decoding means (15, 1).
7, 18, 22, 23, 25-29, 39, 40)
Storage means 7A to 7 for storing high-efficiency coded moving images
When D is attached to the housings 31 and 32, the storage means 7
The moving image data S13 stored in A to 7D are sequentially read and decoded to display a moving image on the plurality of liquid crystal display means 33A to 33D.

[0009]

The moving image data S13 stored in the storage means 7A to 7D is sequentially read and the decoding means (15, 17, 1).
8, 22, 23, 25-29, 39, 40),
By displaying the moving image on the plurality of liquid crystal display means 33A to 33D, the moving image can be enjoyed on the plurality of liquid crystal display screens, and the relationship with other scenes can be enjoyed. As a result, the user can easily enjoy the moving image with a psychological sense of security as if he or she were watching a silver halide photo album.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings.

(1-1) Overall Configuration In FIGS. 1 and 2, reference numeral 1 indicates a moving image recording / reproducing system as a whole. The moving image recording / reproducing system 1 records a video on a memory card by highly efficient encoding. The download device 2 (FIG. 1) and the electronic album 3 that decodes the video recorded on the memory card and displays the video on the display.

(1-2) Configuration of Download Device The download device 2 inputs the video image reproduced by the video camera 4 as the input video signal VI into the download device body 5 and outputs it as the output video signal VO to the monitor 6. Thus, the input video signal VI input to the download device body 5 can be constantly monitored.

Here, the download device body 5 is configured such that four memory cards 7 (7A, 7B, 7C and 7D) can be attached and detached, and a select button 8 (8A, 8).
B, 8C and 8D), the memory card 7 in which the image is written can be freely selected.

Incidentally, each memory card 7 can record image data for about 10 seconds. Further, the download device main body 5 has a write start key 9, and when the write start key 9 is turned on, it enters a recording mode,
Video and audio are highly efficiently encoded and recorded in the memory card 7 selected by the user in advance.

Further, the download device main body 5 has a recorded image confirmation key 10. When the recorded image confirmation key 10 is turned on, the write sequence verify mode is entered, and the image and audio stored in the memory card 7 are recorded. The data is decoded and output to the monitor 6. This allows the user to confirm the recorded video and audio on the spot at the time of download, and the recorded memory card 7 (7
It is possible to confirm whether the image of the scene desired by the user is recorded in A, 7B, 7C and 7D).

The download device body 5 is constructed as shown in FIG. That is, the download device main body 5 converts the input video signal VI into the digital data S1 when input to the analog / digital conversion circuit 11 via the matrix circuit.

Upon receiving the digital data S1, the raster block conversion circuit 12 blocks the raster scan signal of the image and outputs it to the motion detection circuit 13 and the intra-frame coding / inter-frame coding switching circuit 14. ing.

The motion detection circuit 13 detects a motion vector based on the block input data S2 and the memory data S3 stored in the frame memory 15, and outputs it as a motion vector signal S4. Motion compensation circuit 16
Indicates that the memory data S3 is spatially shifted by motion compensation by changing the read address of the block data one frame before based on the motion vector signal S4.
The compensation data S5 is supplied to the subtraction circuit 17 and the addition circuit 18.

Here, the intra-frame coding / inter-frame coding switching circuit 14 is adapted to switch the mode by an intra / inter switching signal S6, and when the input video signal VI is intra-frame coded. Outputs the input data S2 to the orthogonal transformation circuit 19 and outputs the difference data S7 input from the subtraction circuit 17 to the orthogonal transformation circuit 19 when the input video signal VI is interframe coded.

Incidentally, the switching signal S6 controls the switching circuit 17 so as to select one of the block data of the differential data S7 and the block data of the input data S2, whichever has the smaller power in the block. .. The reason for selecting the one with the smaller power in the block here is that, in principle, the smaller the power, the smaller the amount of information at the time of encoding. The power here is a value that is usually given by the sum of absolute differences from the average value in the block.

The orthogonal transformation circuit 19 is, for example, a DCT (Discr
The input data S2 or the difference data S7 is transformed into the orthogonal transformation data S8 by the ete cosine transform. The quantizing circuit 20 converts the orthogonal transform data S8 into quantized data S10 based on the quantizing size given by the quantizing status S9, and outputs it to the variable length coding circuit 21.

The variable-length coding circuit 21 uses the quantized data S
When variable-length coding processing is performed on 10, the variable-length coded data S
11 is supplied to the buffer memory 22. Here, the buffer memory 22 is adapted to format the variable-length coded data S11 and output it as the recording data S12 to the memory card 7 as a recording medium, and at the same time, quantize status as a feedback signal in accordance with the amount of information generated. S9 is output.

The buffer memory 22 discriminates the scene change based on the amount of generated information. When the user presses the recorded image confirmation key 10, the buffer memory 22 reads the data in the memory card 7 as the memory data S13 and outputs the variable length coded data S14 to the variable length decoding circuit 23. ..

The variable length decoding circuit 23 decodes the variable length encoded data S14 and outputs the variable length decoded data S15 to the switching circuit 24. Here, the switching circuit 24 outputs the quantized data S10 corresponding to the input video signal VI to the inverse quantization circuit 25 while the verifying signal S16 for switching to the write sequence verifying mode is not input, and the verifying signal S16 is input. If so, the variable length decoded data S15 is output to the inverse quantization circuit 25.

The inverse quantization circuit 25 uses the quantized data S10.
Alternatively, when the variable length decoded data S15 is inversely quantized, the inverse quantized data S17 is supplied to the inverse orthogonal transform circuit 26, and the inverse orthogonal transform circuit 26 inversely orthogonally transforms the inverse quantized data S17 into data in the spatial domain. Converted and locally decoded data S18
Is output to the adder circuit 18 and the switching circuit 27.

Here, the switching circuit 27 is switch-controlled by the intra-frame coding / inter-frame coding switching signal S6,
If it is determined to be the inter-frame coding, the compensation data S5 output from the motion compensation circuit 16 is converted into the locally decoded data S.
Frame memory 1 after decoding input data in addition to 18
5 as the frame decoded data S19, and when it is determined to be the intraframe coding, the locally decoded data S18 is output.
Is output to the frame memory 15.

The block / raster conversion circuit 28 converts the memory data S3 into raster data S20 and outputs the raster data S20 to the digital / analog conversion circuit 29. The digital / analog conversion circuit 29 converts the analog data into an output video signal VO. Is output to the monitor 6.

(1-3) Structure of Electronic Album On the other hand, the electronic album 3 is structured as shown in FIG. A pair of left and right album boards 31 and 32
Is openably and closably locked at one end, and can be folded and stored when not in use, and the user can confirm the liquid crystal displays 33A, 33B, 33C and 33D by spread when in use.

Liquid crystal displays 33A, 33B, 33C and 33D are provided on the locking sides of the album boards 31 and 32.
Memory card 7 for storing images projected on
Memory boards 34 and 35 on which A, 7B, 7C and 7D are installed are locked so that they can be opened and closed freely, and handles 34A and 35
By pulling up A, the memory cards 7A, 7
B, 7C, and 7D can be switched with the same pagination feeling as in the silver halide photo album.

The album boards 31 and 32 are provided with moving picture on-switches 36A to 36D corresponding to the respective liquid crystal displays 33A to 33D, and are stored in the corresponding memory card 7 by turning on the respective switches. A moving image is displayed on the liquid crystal display 33.

Further, speakers 37 and 38 are provided between the liquid crystal displays 33A and 33B of the album boards 31 and 32 and between the liquid crystal displays 33C and 33D, respectively, and are stored in the memory card 7 selected by the user. You can listen to the sound you are making in stereo.

Here, on the album boards 31 and 32,
A decoder is built in, and the decoder has a configuration as shown in FIG. 4 in which the same parts as in FIG. That is, the electronic album 3 stores the image data S13 read from the memory card 7 in the buffer memory 2
2. Variable length data S14 via the variable length decoding circuit 23
To the inverse quantizing circuit 25 and the inverse orthogonal transform circuit 26.
Are sequentially supplied to the addition circuit 18 or the switching circuit 27.

Here, when the image data S13 read from the memory card 7 is intra-frame coded data, the frame memory 15 receives locally decoded data S1.
8 is input through the switching circuit 27 and then output to the block / raster conversion circuit 28.

When the image data S13 read from the memory card 7 is inter-frame coded data, the frame memory 15 outputs the compensation data S5 which is motion-compensated by the motion vector data 31 input from the buffer memory 22. The frame decoded data S19 added to the local decoded data S18 is input through the switching circuit 27 and then output to the block / raster conversion circuit 28.

The electronic album 3 outputs the raster data S20 output from the block / raster conversion circuit 28 to the frame memories 40A, 40B, 40C and 40D corresponding to each liquid crystal display through the switching circuit 39 for outputting four terminals. After that, analog / digital conversion circuits 29A, 29B, 29 corresponding to the respective frame memories 40A-40D
Liquid crystal displays 36A, 36B through C, 29D,
It is designed to output to 36C and 36D.

(2) Operation of the embodiment In the above-described configuration, when the user presses the selection key 8A and wants to record the favorite image to be viewed in the electronic album 3 on the memory card 7A, the download device main body 5
Waits for the key depression operation of the write start key 9 and stores the image in each memory card 7 as follows (FIG. 5). Here, m is the number of frames of the image to be stored, and T _M is the memory card 7
This is the frame reproduction time of recordable compressed data determined by the capacity of.

The user waits for the image to be recorded on the memory card 7A to be reproduced while confirming the images sequentially stored on the memory card 7A on the monitor 6. Check the playback of the corresponding video here, and start writing switch 10
When is turned on, the download device main body 5 highly efficiently codes the input video signal VI input from the video camera 4, converts the input video signal VI into memory data S12, and sequentially starts storage in the memory card 7A.

When the duration of the scene of the video to be stored here is shorter than the frame reproduction time T _M (see FIG. 5).
(A)), that is, when the scene change is identified in the buffer memory 22 before the frame reproduction time T _M ,
The download device main body 5 stops storing the memory data S12 in the memory card 7 upon detection of scene change in the buffer memory 22.

The identification of the scene change is discriminated based on the general property of encoding by so-called codec. That is, in general, in the case of codec, when the image in which the scene change occurs is encoded by taking the inter-frame difference, the difference data increases, so that the corresponding image frame is intra-frame encoded.

Therefore, if the ratio of the intra-frame coding process within one frame is obtained, it can be determined to some extent whether or not scene change has occurred. In the case of this embodiment, since the majority of the processing in the field occupies the majority during scene change, it can be expected that the momentary increase in the amount of information generated will be remarkable, so that the buffer memory 2
2 The amount of generated information generated inside is counted, and when the generated information amount exceeds a predetermined threshold value, it is determined as scene change.

On the other hand, when the duration of the scene of the image to be stored is longer than the frame reproduction time T _M (FIG. 5 (B)),
When the data stored in the memory card 7A reaches the limit value of the capacity, the download device 5 encodes and records up to the frame (m) immediately before that, and finishes writing the data to the memory card 7A.

Here, when the user wants to confirm whether or not the desired image is recorded on the memory card 7A, the user operates the recording data confirmation key 10 to turn on the memory card 7A.
The video stored in is decoded and displayed on the monitor 6, and when the desired video is not recorded, the above procedure is repeated again.

The user records an image on the memory cards 7B to 7D similarly to the case of the memory card 7A, confirms that the desired image is recorded, and removes the memory card 7A to 7D from the download device body 5. , The electronic album 3 is inserted into a predetermined position on the album board.

At this time, the four liquid crystal displays 33A to 33D of the electronic album 3 are stored in the frame memories 40A to 40D.
The image of the first frame of each of the memory cards 7A to 7D held in 40D is displayed (FIG. 6).

Thus, the user sees the first frame images arranged in time sequence on the four liquid crystal displays 33A to 33D on the album boards 31 and 32 in the same manner as the silver halide photo album, so that, for example, an event of a family trip. Can be remembered from multiple images. The liquid crystal display 33B among the first frame images displayed in this way
When the user wants to enjoy the continuation of the image displayed on the screen as a sound-added image, the user turns on the moving image on switch 36B provided beside the liquid crystal display 33B.

At this time, the decoder built in the album board 31 receives the memory data S13 from the memory card 7B.
Are sequentially read and decoded through the buffer memory 22, the variable length decoding circuit 23, the dequantization circuit 25, and the inverse orthogonal transformation circuit 26, and the moving image is reproduced and displayed on the liquid crystal display 33B. At this time, from both speakers 37 and 38,
The audio that was played in stereo is played.

As a result, the user can continue to enjoy the changes in the facial expression and voice of the child after the first frame image, and can easily reproduce and enjoy his or her favorite video regardless of location. Further, by arranging four liquid crystal displays 33 instead of one, the user can simultaneously view still images of other scenes at a plurality of time points and a plurality of places.
You can enjoy the relationship between the two still images, and you can feel the psychological sense of security that you see in a silver halide photo album.

(3) Effects of the Embodiments According to the above configuration, the four liquid crystal displays 33A to 33A.
By mounting the four memory cards 7A to 7D each having a high efficiency code and recording the moving picture at a predetermined position of the electronic album 3 having a decoder for decoding the high efficiency coded moving picture, The user can see the four still images in relation to the other still images, and by decoding the moving images and displaying them on the liquid crystal displays 33A to 33D, the user can easily enjoy and enjoy his / her favorite image any number of times. be able to.

Further, by using the memory cards 7A to 7D as the moving image storage medium, it is possible to eliminate a mechanical mechanism in the electronic album 3, and the electronic album 3 can be eliminated.
Can be easily reduced in size and weight.

(4) Other Embodiments In the above embodiment, the memory cards 7A to 7A are used.
Although the case of recording the image of each predetermined scene in D has been described, the present invention is not limited to this, and when recording a long scene, four memory cards are serially assigned to one scene and recorded. However, if this is done, it is possible to realize a quadruple playback duration.

Further, in the above embodiment, the case where four liquid crystal displays 33A to 33D are mounted on the electronic album 3 has been described, but the present invention is not limited to this, and can be widely applied to the case where two or more liquid crystal displays 33A to 33D are mounted. ..

Further, in the above-described embodiment, the case where the video signal can be recorded in the four memory cards 7A to 7D as the download device main body 5 has been described, but the present invention is not limited to this, and the memory card 1 is used. Only one memory card can be attached, and when writing to one memory card is complete, the memory card can be replaced with the next memory card to record video, and the same video signal can be recorded on multiple memory cards at once. It may be possible to record.

In the above embodiment, the case where the memory cards 7A to 7D correspond to the liquid crystal displays 33A to 33D has been described, but the present invention is not limited to this, and the images stored in the memory card 7A are not limited thereto. May be displayed on the other liquid crystal displays 33B to 33D.

Further, in the above-mentioned embodiment, the case where the liquid crystal displays 33A to 33D are arranged on the two album boards 31 and 32 so that they can be opened up is described, but the present invention is not limited to this, and three or more sheets are provided. The album board may be locked so that it can be opened.

Further, in the above-described embodiment, the case where the electronic album 3 has a size of about A4 size has been described, but the present invention is not limited to this, and the main body size can be applied to various sizes. Also, it can be applied to various shapes.

Further, in the above-described embodiment, the case where the input video signal VI is highly efficiently encoded and stored in the memory cards 7A to 7D has been described, but the present invention is not limited to this, and is stored in another recording medium. It can also be widely applied.

[0057]

As described above, according to the present invention, a plurality of liquid crystal display means are mounted in a housing having a built-in decoding means for decoding a moving image which is highly efficient coded and stored in the storage means. By displaying the moving images stored in the storage means on the plurality of liquid crystal display means, the user can easily enjoy the desired moving image as many times as desired, and at the same time, the images of the other plurality of liquid crystal display means can be viewed. The user can enjoy the moving image in the same way as the silver halide photo album by being able to watch at the same time.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a coding device of an electronic album device according to the present invention.

FIG. 2 is a perspective view showing an embodiment of a decoding device of an electronic album device according to the present invention.

FIG. 3 is a block diagram for explaining an encoding device.

FIG. 4 is a block diagram for explaining a decoding device.

FIG. 5 is a time chart used for explaining a video writing process.

FIG. 6 is a schematic diagram for explaining an image displayed on a liquid crystal display.

[Explanation of symbols]

1 ... Moving image recording / playback system, 2 ... Download device, 3 ... Electronic album, 4 ... Video camera, 5 ...
... Downloading device main body, 6 ... Monitor, 7 ... Memory card, 8 ... Select button, 9 ... Write start key, 10 ... Record confirmation key, 31, 32 ... Album board, 33 ... Liquid crystal display , 35 …… Album board, 36 …… Video on-switch, 37,38 …… Speaker.

Claims (1)

[Claims] 1. A plurality of liquid crystal display means, a decoding means for decoding a high-efficiency coded moving image and supplying it to the liquid crystal display means, and a housing for mounting the plurality of liquid crystal display devices and the decoding means. When the storage means for storing the high-efficiency-coded moving image is attached to the housing, the decoding means sequentially reads and decodes the moving image data stored in the storage means, An electronic album device, wherein the moving image is displayed on a plurality of liquid crystal display means.