JP3216492B2 - Television receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention captures an image at a specified moment from a displayed image as a still image, and stores and holds a plurality of still images by data compression.
The present invention relates to a television receiver capable of displaying.

[0002]

2. Description of the Related Art In recent years, there has been a television receiver, such as a two-screen television, capable of dividing a screen into two parts on the left and right sides and simultaneously displaying two different video signals. Such a television receiver incorporates a frame memory for at least two fields in order to synchronize and simultaneously display two input video signals having different synchronizations, thereby realizing a frame synchronization function. . There are already those having a function of storing a video signal for one field by using the frame memory and displaying the video signal as a still image.
The operation of a conventional two-screen television receiver having a still image display function will be described below with reference to FIG.

[0003] Referring to FIG. 8, description will be given of a case of operating as a two-screen television. The video input unit 502 that has received the input video signal 501 performs A / D conversion on the input video signal 501 and outputs a discrete input video signal 503. The frame buffer 504 receives the discrete input video signal 503, manages and stores it for each field. Usually, the frame buffer 504 is realized using a semiconductor memory device. The frame buffer 504 has a capacity enough to store at least two fields of discrete video signals, and has the ability to manage the distinction between odd and even fields, and a field determination signal indicating the field type of the first video signal 513. Frame buffer 50 according to 514
4 and outputs the content as a discrete output signal 505,
After the conversion, the output video signal 507 is output. The video synthesizing means 508 receives the first video signal 513 and the output video signal 507, synthesizes them into one screen arranged in parallel on the left and right, and outputs the result as a synthesized video signal 509. By doing so, video signals having different synchronizations can be displayed simultaneously.

[0004] When operating as a normal television receiver, the video synthesizing means 508 to which the first input video signal 513 is input does not synthesize the video with the reproduced video signal 507 from the video reproducing means 506. , The first video signal 513 is directly output as the display video signal 509 to the video display means 510 for display. In this case, the first input video signal 513 is displayed on the video display unit 51.
0 is displayed using the entire screen, and functions as a normal television receiver.

[0005] In the dual-screen television having such a configuration, for example, when operating as a dual-screen television, the video input means 5 is provided in the frame buffer 504.
02, the control signal 512 is output from the instruction input means 511 so as to stop the operation of selecting the optimum field by the field determination signal 514, and thereby the frame buffer 50 is stopped.
4 continues to select the same field, and as a result, a still image is displayed on the screen corresponding to the second video signal 501 in the video display means 510. In this manner, a function of displaying a still image by using the frame memory in a two-screen television can be realized.

[0006]

However, in the above-described conventional technique, the frame buffer 504 prepared for simultaneously displaying two video signals having different synchronizations on one screen uses a frame memory. The function of displaying a still image is realized, and when the function of displaying a still image is terminated, the frame memory is used for its original function, and the contents of the displayed still image are erased. Therefore, it is not possible to display the contents of the still image again later or to accumulate a plurality of still images. The only way to keep the still image was to write it down as a memo or print the screen using a device such as a video printer.

In view of the above problems, the present invention provides a dedicated memory for storing a still image to enable the storage of a still image, and compresses video data to store a plurality of images in a small-capacity memory. It is an object of the present invention to provide a television receiver capable of accumulating a video image.

At that time, in order to list a plurality of videos, all the stored videos are reduced and displayed on the video display means 510 at the same time, or a display for confirming the captured content when capturing the video. This can be performed by the video display means 510, and at that time, whether or not to capture the video can be selected according to the content of the video. It is an object of the present invention to provide a television receiver capable of storing a still image.

[0009]

In order to achieve this object, a television receiver according to the present invention comprises a video input means for inputting an input video signal, and a compression means for compressing the input video signal captured by the video input means. Means, a compressed video buffer for temporarily storing a video signal compressed by the compression means, a compressed video storage means for storing at least one or more contents of the compressed video buffer, and an instruction input of the content of the compressed video buffer Selecting means for storing the compressed video at an appropriate location in the compressed video storage according to a control signal from the means, and for reading a compressed video at an arbitrary location from the compressed video storage; Decompression means for decompressing the content selected and read by the selection means, and a decompression video buffer for storing the video signal decompressed by the decompression means Video reproducing means for reproducing a video signal stored in the decompressed video buffer; synthesizing the input video signal and an output video signal reproduced from the video reproducing means in accordance with a control signal from the instruction input means. And video output means for inputting and displaying a composite video signal output from the video synthesis means.

[0010]

According to the television receiver of the present invention, the image displayed at the moment is captured as a still image according to a user's instruction according to the user's instruction, and data compression is applied to the storage device having a limited capacity. A larger number of still images can be stored and displayed, and the user can store a plurality of necessary still images as still images among those displayed as images.

[0011]

【Example】

Embodiment 1 Hereinafter, the operation of a television receiver according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing the internal configuration of the television receiver of the present invention. In FIG. 1, video input means 102
Receives an input video signal 101, detects synchronization, A / D converts the input video signal 101 for each field, and outputs the result as a discrete input video signal 103. The compression means 104 compresses data of the discrete video signal 103, and can be realized by using, for example, JPEG, a method combining wavelet transform and tunable coding, or the like. The data is compressed by the compression means 104 and output as a compressed video signal 105, and a compressed video signal for one field is stored in the compressed video buffer 106. Compressed video buffer 10
6, the compressed video signal for one field is temporarily stored, and the selection unit 107 operates in response to the control signal 119 when the user instructs the capture of the still image by the instruction input unit 118. At this time, the compressed video signal stored in the compressed video buffer 106 is stored in an empty area of the compressed video storage unit 108.

The compressed video storage means 108 is desirably one that can be accessed at high speed and at random, and can be configured using, for example, a semiconductor memory. The compressed video storage means 108 has a capacity larger than the data amount of the compressed video signal for one field in order to store at least one or more still images. It has a function of managing the order of taking in the already stored compressed video signals. If there is no vacant area in the compressed video storage means 108, the content of the current compressed video buffer is overwritten and stored in the area where the compressed video signal stored most recently is stored, so that the latest compressed video buffer is stored. The video signal is stored with priority. The video input means 102 and the compression means 104 are always operating even when the user does not give an instruction to capture a still image by the instruction input means 118, and the content of the compressed video buffer is the compressed video signal output from the compression means 104. It is overwritten one after another by 105 and updated to the compressed video signal corresponding to the latest input video signal.

As described above, by constantly updating the content of the compressed video buffer 106, only the selecting means 108 needs to be operated when a capture instruction is issued from the user. It is possible to eliminate a time difference from a video signal to be captured, thereby realizing a system with good operability.

If the video signal input means 102 is controlled by the control signal 19 output from the command input means 118, the head of the field is detected by a user's instruction, and then the input video signal is fetched. Since it starts, a time delay of up to one field occurs. Also, the reaction speed of the user, the reaction speed of the instruction input unit 118, the communication time of the control signal 119, the video input unit 1
Considering the accumulated time such as the reaction speed such as 02, the time delay becomes large depending on the actual configuration method of the system,
There is a possibility that video at a time not intended by the user may be captured.

In the configuration of the present invention, a compressed video buffer always stores a compressed video signal corresponding to a video delayed by the time required for the compression processing by the compression means 104, and the selection means 107 is operated by a user's instruction. The past video that is retroactive to the delay time can be stored in the compressed video storage unit 108. By adjusting the time required for the compression processing so as to cancel the delay time due to the reaction speed between the user and the system, a system with good responsiveness can be obtained.

Next, when the user wants to view the recorded still image, the control signal 119 is output using the instruction input means 118, and the selection means 107 responds to the request by outputting the still image from the compressed video storage means 108. The compressed video signal is selected and output to the expansion means 109.

The expansion means 109 expands the input compressed video signal and outputs a discrete video signal 110 to the expanded video buffer 111. In the video reproducing means 113, the expanded video buffer 1
11 is input, and the result of D / A conversion is output as an output video signal 114. The video synthesizing means 115 inputs the input video signal 101 and the output video signal 114,
The images are combined and output as one video signal. For example, when a display means having a margin in the horizontal direction such as a wide television is used as the video display means, the input video signal 101 is equally divided into two parts on the left screen as shown in FIG. Is displayed, and by combining the output video signal 114 on the right screen, while watching a normal broadcast on the left screen,
A previously captured still image can be displayed on the right screen. Further, in order to keep the aspect ratio equal to that of the original image, the composition as shown in FIG. 5B may be performed. FIG.
The image may be displayed as a child screen as shown in FIG. 5C, or a still image may be displayed on the entire surface as shown in FIG. Moreover, you may enable it to select them according to a user's instruction.

The instruction input means 118 accepts a still image capture or display instruction from the user, and can be composed of, for example, an infrared remote controller and its light receiving unit.

When a still image is not displayed, that is, when it operates as a normal television receiver, the input video signal 101 is input to the video display means 117 via the video synthesizing means 115 to which the input video signal 101 is input. The image is displayed. In this case, the video is not combined with the reproduced video signal 114 from the video reproducing unit 113. By doing so, the first input video signal 513 is displayed using the entire screen of the video display means 510, and functions as a normal television receiver.

In the television receiver of the present invention having the above-described configuration, when the user views a display image and displays the contents to be noted, the user operates the remote controller or the like to convert the image at that moment into a still image. The contents can be stored in the television and can be referred to by displaying the contents later.

(Embodiment 2) Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a block diagram showing a configuration of the television receiver of the present invention. In FIG. 2, each component, its function, the flow of a video signal, and the like are the same as those corresponding to FIG. 1, but a second decompression means 213 and a second decompressed video buffer 215 are added. The signal input to the video reproducing means 217 can be selected from a first discrete output signal 212 output from the first expanded video buffer 211 and a second discrete output signal 216 output from the second expanded video buffer 215. The points are different. The first decompression means 209 is the same as the decompression means 109 in FIG. 1, and the first decompressed video buffer 211 is the same as the decompressed video buffer 111 in FIG. By using the second decompressing means 213 and the second decompressed video buffer 215, a list display of the captured still images as reduced images is realized. Hereinafter, the operation of the third embodiment different from the first embodiment will be described.

The second decompression means 213 decompresses the compressed data of the still image stored in the compressed video storage means 208, and further reduces the result. And
The reduced data is output to the second expansion buffer 215 as a second expansion video signal 214. In the second expanded video buffer 215, a plurality of second expanded video signals 21
4 can be stored at one time, and are stored in such a manner that they can be displayed side by side according to a certain rule according to the order input to the second decompressed video buffer 215.

The second discrete output video signal 216 is a signal for displaying a list of reduced images of the still images created in this manner, and is output by the video reproducing means 217 in the same manner as the first discrete output video signal 212. D / A converted and synthesized by the video synthesizing unit 219 are displayed by the video display unit 221. Instruction input means 2
In step S22, when the user instructs to display a list of the contents of the still images, the control signal 223 causes the selecting means 207 to select the second decompressing means 213 from the compressed video storage means 208 in the descending order of the fetched time. By outputting the compressed video signal to the second expansion buffer 215, a list of reduced images of still images arranged in reverse order of the capture time is formed. Control signal 2
23, the video reproduction means 217 is controlled to select the second discrete video output signal 216 as an input, and the D / A
After the conversion, the output video signal 218 is output.

The video synthesizing means 219 outputs the input video signal 2
01 and the output video signal 218, and as in the case of the first embodiment, FIGS. 5 (a), 5 (b), 5 (c), and 5 (d).
And a composite video signal 220 is output and displayed by the video display means 221. For example, when the total number of still images that can be stored in the compressed video storage unit 208 is 6, FIG.
By displaying a list of six still images as shown in (a), the contents of all the currently stored still images can be checked at a time, and the selection means is arranged so as to be arranged in reverse order of the capture time. 207 means a compressed video storage means 208
In this case, the still image captured last becomes the reduced still image with the number "1" in FIG. 6A, and is overwritten and erased the next time a new still image is captured. The resulting still images are arranged so as to be reduced still images of the number “6”. This makes it easy to confirm and manage the contents.

For example, when the total number of still images that can be stored in the compressed video storage means 208 is 12 and the second expanded video buffer can store only 6 reduced videos,
The screen is divided and displayed in the first six images and the second six images,
By providing an operation method for switching the screen between the first half and the second half, the display may be performed as shown in FIG. 6B.

By doing so, even if the total number of still images that can be stored in the compressed video storage means 208 increases, the reduction ratio of the image in the second decompression means 213 is increased to display one still image. You can check all still images without reducing the size.

(Embodiment 3) Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 3 is a block diagram showing a configuration of the television receiver of the present invention. In FIG. 3, the components, their functions, the flow of video signals, and the like are the same as those corresponding to FIG. 1, but a third decompression means 313 and a third decompressed video buffer 315 are added. And the signal input to the video reproduction means 317 is selected from the first discrete output signal 312 output from the first decompressed video buffer 311 and the third discrete output signal 316 output from the third decompressed video buffer 315. What you can do is different. The first decompression means 309 is the same as the decompression means 109 in FIG. 1, and the first decompression video buffer 311 is the same as the decompression video buffer 111 in FIG.
Is the same as

By using the third decompression means 313 and the third decompressed video buffer 315, a reduced image of a fetched still image is displayed for a certain period of time, thereby prompting confirmation of the operation. Hereinafter, the operation of the third embodiment different from the first embodiment will be described.

The third decompression means 313 decompresses the compressed data stored in the compressed video buffer 306, and outputs the result as a third decompressed video signal 314. The third decompressed video buffer 315 receives and holds the third decompressed video signal 314, and outputs a third discrete output video signal 316. The third discrete output video signal 316 is
By inputting to the video reproducing means 317 in the same manner as the first discrete output video signal 312, the video synthesizing means 319
Are combined with the input video signal 301 and the video display means 321
Is displayed. A control signal 323 for operating the third decompression means 313 at the same time as the control of the selection means 307 as in the first embodiment when the user instructs to take in a still image in the instruction input means 322. Is output, and the content of the compressed video buffer is stored in the compressed video storage means 308, and at the same time, the content of the video is displayed.

By operating as described above, when the user gives an instruction to capture a still image using the instruction input means 322, the television receiver of the present invention responds correctly and actually captures the still image. What you did,
It is possible to check the content of the video actually captured. At that time, in the third extension means 313,
Like the second decompression means in the second embodiment, it has a function of reducing the decompressed video. When the video synthesizing means 319 synthesizes the input video signal 301 and the output video signal 318, for example, as shown in FIG. ) May be displayed on the small screen.

Further, at that time, in order to sensibly express that the data has been captured in response to the operation of the user, a display may be displayed with a wipe operation as shown in FIG. Also,
In order to prevent unnecessary capture of a still image, when the capture of a still image is instructed by the instruction input unit 322, the selection unit 307 is not operated at the same time, and the third expansion unit 313 and the third expanded video buffer 315 operate. While the displayed confirmation screen is displayed, the user waits for the capture instruction by the instruction input means again. At that time, the user examines the content displayed on the confirmation screen and then actually stores the content in the compressed video storage means 308. Whether or not to do so may be made selectable.

(Embodiment 4) Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 4 is a block diagram showing a configuration of the television receiver of the present invention. 4, the components, their functions, the flow of the video signal, and the like are the same as those corresponding to FIG. 3, but the remaining amount display means 425 is added and the selection means 407
However, the difference is that the number of still images that can be captured is output as the remaining amount signal 424 from the free space of the compressed video storage unit 408.

The remaining amount display unit 425 receives the remaining amount signal 424 output from the selecting unit 407, converts the remaining number of still image captures indicated by the input into a video, and outputs it as a remaining amount display signal 426. . The remaining amount display signal may be a video signal for directly displaying the remaining amount by a number, or a video signal for expressing only whether or not there is an empty area in the compressed video storage unit 408 in color or shape. May be issued.

As described above, when the user operates the instruction input unit 422 to capture a still image, for example, a frame is displayed on the confirmation screen for capturing a still image displayed for a certain period of time, as described in the third embodiment. By switching the color depending on whether or not there is a remaining amount, the still image can be presented to the user as one of the criteria for determining whether or not the still image is actually stored in the compressed video storage unit 408.

(Embodiment 5) Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 9 is a block diagram illustrating a configuration of a television receiver according to the present invention. In FIG. 9, the components, their functions, the flow of the video signal, and the like are the same as those corresponding to FIG. 1, but the point that the compressed video saving unit 920 is added and the selection unit 9
07 is capable of saving the content of the compressed video storage means 908 to the compressed video saving means 920 and reading the saved content.

The compressed video storage means 908 is stored in a DRAM or SD
In the case of using a semiconductor memory such as a RAM which needs a power supply and a refresh to store and hold the contents, in a television receiver having a configuration as in the first embodiment of the present invention, the power supply is turned off. Then, all the contents stored in the compressed video storage means 908 are lost, and the next time the power is turned on, the stored still image cannot be displayed.

Therefore, using a device capable of retaining the stored contents even when the power is turned off, the compressed video saving means 9 is used.
20 is realized, and when the power is turned off by a user's instruction, the selection means 907 transfers the content of the compressed video storage means 908 to the compressed video saving means 920 and stores it by the control signal 919 from the instruction input means 918, When the power is turned on, the stored content of the compressed video saving unit 920 is read out to the compressed video storage unit 908, so that the stored still image can be retained even when the power is turned off.

Further, a structure may be employed in which the compressed video signal is automatically sent to the compressed video saving means 920 at a fixed time interval and stored therein, so that a still image can be held even when the power is suddenly turned off. It is.

By adopting such a configuration, for example, a relatively inexpensive DRAM which can be accessed at high speed and which is relatively inexpensive is used for the compressed video storage means 908 and a hard disk is used for the compressed video saving means 920. It is possible to realize a television receiver that can hold a still image that has been captured even when the television receiver is operated.

The equivalent effect can be obtained by using, as the compressed video saving means 920, a semiconductor memory device that does not require a power supply for storing and storing contents, such as an EEPROM, instead of a hard disk.

Also, the compressed video saving means 920
An equivalent effect can be obtained by using a semiconductor memory device that does not require refreshing for storing and holding the content, such as an SRAM, instead of the EPROM, and supplying power only to the SRAM even when the entire power supply is turned off.

Also, a compressed image saving means 920 such as a hard disk, a magneto-optical disk (MO), or a phase-change optical disk (PD) which can be randomly accessed and has a low capacity unit price but has a low access speed is used. In the case of realization, not only saving at the time of power-off, but also saving and storing the still image when the image cannot be completely stored in the compressed video storage unit 908, so that N or more still images can be stored. It can also be used as a secondary storage medium.

[0043]

As described above, according to the present invention,
According to the user's instruction, the video being displayed at that moment is captured as a still image, and more data can be stored and held in a limited-capacity storage device by performing data compression. Since the image storage status checking means can also check the image on the screen, it is possible to provide a television receiver which can easily take in a still image and use the image storage at the moment when it is functional.

Further, since the still image can be held even when the power is turned off, the screen can be viewed whenever desired.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a television receiver according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a television receiver according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram of a television receiver according to a third embodiment of the present invention.

FIG. 4 is a configuration diagram of a television receiver according to a fourth embodiment of the present invention.

FIG. 5 is a diagram showing an example of a form of video synthesis in the first to fourth embodiments of the present invention.

FIG. 6 is a diagram showing a display example of a list screen for reducing and displaying six still images in a second expanded video buffer according to the second embodiment of the present invention;

FIG. 7 is a diagram illustrating a display example of a screen when a wipe operation of a third decompressed video buffer is performed according to the second embodiment of the present invention;

FIG. 8 is a diagram illustrating an example of a configuration of a conventional two-screen television and an operation thereof.

FIG. 9 is a configuration diagram of a television receiver according to a fifth embodiment of the present invention.

[Explanation of symbols]

101, 201, 301, 401, 901 input video signal 102, 202, 302, 402, 902 video input means 103, 203, 303, 403, 903 discrete input video signal 104, 204, 304, 404, 904 compression means 105, 205, 305, 405, 905 Compressed video signal 106, 206, 306, 406, 906 Compressed video buffer 107, 207, 307, 407, 907 Selection means 108, 208, 308, 408, 908 Compressed video storage means 109, 909 Decompression Means 110, 210, 310, 410, 910 Decompressed video signal 111, 911 Decompressed video buffer 112, 912 Discrete output video signal 113, 913 Video playback means 114, 218, 318, 418, 914 Output video signal 115, 219, 319, 419, 91 5 Video synthesis means 116, 220, 320, 420, 916 Composite video signal 117, 221, 321, 421, 917 Video display means 118, 222, 322, 422, 918 Instruction input means 119, 223, 323, 423, 919 Control Signal 209 First decompression means 210 First decompressed video signal 211 First decompressed video buffer 212 First discrete output video signal 213 Second decompression means 214 Second decompressed video signal 215 Second decompressed video buffer 216 Second discrete output video signal 309 First decompression means 310 First decompressed video signal 311 First decompressed video buffer 312 First discrete output video signal 313 Third decompression means 314 Third decompressed video signal 315 Third decompressed video buffer 316 Third discrete output video signal 409 First decompression means 410 One decompressed video signal 411 First decompressed video buffer 412 First discrete output video signal 413 Third decompression means 414 Third decompressed video signal 415 Third decompressed video buffer 416 Third discrete output video signal 424 Remaining Amount signal 425 Remaining amount display means 426 Remaining amount display signal 920 Compressed video saving means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 5/907 H04N 5/91-5/956

Claims (4)

(57) [Claims] 1. An image input means for inputting an input image signal, a compression means for compressing the input image signal captured by the image input means, and a compressed image for temporarily storing the image signal compressed by the compression means A buffer, a compressed video storage unit capable of storing at least one content of the compressed video buffer, and storing the content of the compressed video buffer in an appropriate location of the compressed video storage unit according to a control signal from an instruction input unit. Selecting means capable of reading a compressed video at an arbitrary position from the compressed video storing means; and first decompressing means for expanding the content selected and read from the compressed video storing means by the selecting means. A first decompressed video buffer for storing a video signal decompressed by the first decompression means, and a selection means from the compressed video storage means Second decompression means for decompressing and reducing the selected and read content; a second decompression video buffer decompressed by the second decompression means and storing a reduced video signal; and the first decompression A video playback unit for selecting and inputting a video signal from one of a video buffer and the second decompressed video buffer by a control signal from the instruction input unit and playing back a video signal; the input video signal; Video synthesizing means for synthesizing and outputting an output video signal reproduced from the means in accordance with a control signal from the instruction input means, and video display means for inputting and displaying a synthesized video signal output from the video synthesizing means. television receiver which is characterized by having a. 2. A video input unit for inputting an input video signal, a compression unit for compressing the input video signal captured by the video input unit, and a compressed video for temporarily storing the video signal compressed by the compression unit. A buffer, a compressed video storage unit capable of storing at least one content of the compressed video buffer, and storing the content of the compressed video buffer in an appropriate location of the compressed video storage unit according to a control signal from an instruction input unit. Selecting means capable of reading a compressed video at an arbitrary position from the compressed video storing means; and first decompressing means for expanding the content selected and read from the compressed video storing means by the selecting means. A first decompressed video buffer that stores a video signal decompressed by the first decompression means; and a second decompression device that decompresses the content of the compressed video buffer. Decompressing means, a third decompressed video buffer for storing the video signal decompressed by the third decompressing means, the video signal of any of the first decompressed video buffer and the third decompressed video buffer A video reproduction means for selectively reproducing a video signal by selectively inputting the control signal from the instruction input means, and converting the input video signal and an output video signal reproduced from the video reproduction means into a control signal from the instruction input means. depending the video synthesis means for synthesizing and outputting a television receiver, characterized by having a video display means for displaying inputted composite video signal output from said image synthesizing means. 3. A video input means for inputting an input video signal, a compression means for compressing the input video signal captured by the video input means, and a compressed video for temporarily storing the video signal compressed by the compression means. A buffer, a compressed video storage unit capable of storing at least one content of the compressed video buffer, and storing the content of the compressed video buffer in an appropriate location of the compressed video storage unit according to a control signal from an instruction input unit. Selecting means for reading out a compressed video at an arbitrary position from the compressed video storage means, detecting the free space of the compressed video storage means, and outputting information relating thereto as a remaining amount signal, First decompression means for decompressing the content selected and read by the selection means from the means, and a video signal decompressed by the first decompression means. A first decompressed video buffer for storing; a third decompression means for decompressing the content of the compressed video buffer; a third decompression video buffer for storing a video signal decompressed by the third decompression means; A video playback unit that selects and inputs one of the video signals of the one expanded video buffer and the third expanded video buffer by a control signal from the instruction input unit and plays back the video signal; A remaining amount display means for receiving a remaining amount signal, generating and outputting a video signal of the number of screens according to the remaining amount signal, an output reproduced from the input video signal and the video reproducing means and the remaining amount displaying means A video synthesizing unit that synthesizes and outputs a video signal according to a control signal from the instruction input unit; and a video display unit that inputs and displays a synthesized video signal output from the video synthesizing unit. Television receiver, characterized in that. 4. A video input unit for inputting an input video signal, a compression unit for compressing the input video signal captured by the video input unit, and a compressed video for temporarily storing the video signal compressed by the compression unit. A buffer, a compressed video storage unit capable of storing at least one content of the compressed video buffer, and storing the content of the compressed video buffer in an appropriate location of the compressed video storage unit according to a control signal from an instruction input unit. A selection unit capable of reading a compressed video at an arbitrary position from the compressed video storage unit; an expansion unit configured to expand the content selected and read from the compressed video storage unit by the selection unit; A decompressed video buffer for storing the video signal decompressed by the decompression means, and a video for reproducing the video signal stored in the decompressed video buffer. Reproducing means; video synthesizing means for synthesizing the input video signal and an output video signal reproduced from the video reproducing means in accordance with a control signal from the instruction input means; A television receiver comprising: video display means for inputting and displaying a video signal; and compressed video saving means for recording and storing the content of the compressed video storage means.