JPH06105280A - Broadcast reception recording and reproducing device - Google Patents

Abstract

PURPOSE:To spontaneously reproduce program information by reproducing the thinned-out picture of the recorded program information, and selecting the program picture from the thinned-out picture. CONSTITUTION:This device is equipped with an antenna 5 and a tuner 6 which receive broadcast program information 1, recording and reproduction controller 9 which controls an entire device, key pad 7 which inputs a control content, encoder 10 which compression-encodes the program information 1, and RAM buffer device 11 which temporarily stores compression-encoded program information 1a. And also, the device is constituted of a thinned-out picture preparing device 15 which prepares the thinned-out information 1b of the program information 1 from the compression-encoded program information 1a, disk recorder 12 which records the compression-encoded program information 1a and the thinned-out information 1b in different areas, decoder 13 which expands the compression-encoded program information 1a, and returns it to an original signal, and display device 14 which outputs a voice and displays a moving image.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast receiving / recording / reproducing apparatus which receives a television broadcast or the like and records / reproduces the content of the broadcast.

[0002]

2. Description of the Related Art At present, as a typical broadcast receiving / recording / reproducing apparatus for receiving a television broadcast or the like and recording / reproducing the broadcast contents, a home video tape recorder (VT).
R) is used. In this VTR, in addition to the normal recording mode in which recording is started by pressing the record button, a broadcast channel, recording start and end times, etc. are set in advance to automatically record the program of that channel. There is a reserved recording mode, and it is possible to automatically record a program of a preset channel even when the user is absent or watching a program of another channel on a television receiver.

However, even if the recording is made in the reserved recording mode, only the program information is recorded on the tape by the VTR, and in order to reproduce it, as in the case of the normal recording,
It was necessary for the user to record in another way where on the tape the program information was recorded.

[0004]

When a VTR records a plurality of program information on one tape, it is necessary to fast forward or rewind the tape in order to reproduce the specific program information. It took a while to start playback. Further, since only the program information is recorded, which program is recorded in which part, or what is the recorded program information, further,
There is a problem that it is not possible to know later how much time is required to reproduce the recorded program information. Therefore, according to the present invention, a thinned-out image in which only screens in which recorded scenes of program information have changed are generated, and program information is selected by looking at this thinned-out image, thereby immediately reproducing the program information. An object of the present invention is to solve the above-mentioned problems by providing a broadcast receiving / recording / reproducing apparatus that can be used. Also, a broadcast receiving / recording / reproducing apparatus capable of reproducing even from the middle of the program information is provided by recording the frame number of the screen where the scene of the program information has changed and selecting this frame number.

[0005]

As means for achieving the above object, there is provided a broadcast receiving / recording / reproducing apparatus for receiving broadcast program information and recording / reproducing the program information,
A receiving device that receives the program information, an encoder that compresses and encodes the program information received by the receiving device, an image generating device that detects a screen change of the program information and generates a thinned image, and an image generating device. A disc recording device for separately recording a thinned image generated by a device and the program information compressed and encoded by the encoder, and decompressing the program information recorded in the disc recording device to an original signal. A decoder, a recording / reproducing control device for controlling the disc recording device, and a display device for displaying the thinned image and the program information,
A broadcast receiving / recording / reproducing apparatus characterized in that the program information to be reproduced is selected by the thinned image displayed on the display device, or recording / reproducing of the program information by receiving broadcast program information. Which is a broadcast receiving / recording / reproducing apparatus for receiving the program information,
An encoder that compresses and encodes the program information received by the receiving device, an image change detecting device that detects a screen change of the program information, and a frame counter that detects a frame number of an image detected by the image change detecting device. And a disc recording device for separately recording the address at which the image of the program information corresponding to the frame number is recorded and the program information compressed and encoded by the encoder, and the disc recording device. The display device includes a decoder for expanding the program information to restore the original signal, a recording / reproducing control device for controlling the disc recording device, and a display device for displaying the thinned-out image and the program information. A feature is that the reproduction start screen of the program information to be reproduced by displaying the frame number is selected. It is intended to provide a broadcast receiving, recording and reproducing apparatus to be.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a broadcast receiving / recording / reproducing apparatus of the present invention will be described with reference to FIGS. The program sending device 2 shown in FIG. 1 is provided on the broadcasting station side, and sends the program information 1 which is a video signal / audio signal of the program content itself from the antenna 4 to the broadcast receiving / recording / playing device provided in each home. It is a current broadcasting device.

The broadcast receiving / recording / reproducing apparatus according to the first embodiment of the present invention includes an antenna 5 for receiving the broadcast program information 1, a tuner (receiving apparatus) 6, and a recording / reproducing control apparatus 9 for controlling the entire apparatus. , Keypad 7 for inputting operation contents,
An encoder 10 for compression-encoding the program information 1, a RAM buffer device 11 for temporarily storing the compression-encoded program information 1a, a program information 1 from the compression-encoded program information 1a
A thinned image generation device (image generation device) 15 that generates a thinned image 1b, a disc recording device 12 that records the compression-encoded program information 1a and the thinned image 1b in separate areas, and a compression-encoded program information 1a. Is expanded and restored to an original signal, and a display device 14 for outputting audio and reproducing a moving image.

First, the operation of recording the program information 1 in this broadcast receiving / recording / reproducing apparatus will be explained.
The program information 1 received by is supplied to the tuner 6.
The tuner 6 is supplied with an operation signal 8 for recording the program information of the channel specified by the keypad 7 via the recording / reproduction control device 9, and outputs the program information 1 of the channel specified by the operation signal 8. Output to the encoder 10. In the encoder 10, the program information 1 (video signal and audio signal) is compression-coded, and the RAM buffer device 1
1 and the thinned image generation device 15 are supplied. The compression-coded program information 1a output from the RAM buffer device 11 is recorded at the address position designated by the recording / reproducing control device 9 of the disc recording device 12.

Further, the compression-encoded program information 1a supplied to the thinned-out image generating device 15 outputs a screen in which scene switching occurs to the disc recording device 12 by the thinned-out image generating device 15, and the compressed code It is recorded at an address position different from the converted program information 1a.

Here, the generation of thinned images will be described. The thinned-out image generation device 15 has registers 21, 2 for accumulating the compression-encoded program information 1a for each screen.
2 is composed of a register pair 23 and a comparator 24 for comparing the screens of the compression-coded program information 1a supplied from the register pair 23. Then, first, the compression-encoded program information 1a is supplied to the registers 21 and 22 for each screen, and the register 2
The screen supplied to No. 2 is output to the disk recording device 12, and the screens supplied to the registers 21 and 22 are output to the comparator 24, respectively. The comparator 24 compares the screens supplied from the registers 21 and 22 and does not output an output signal if the screens are similar and the scene is the same. In this case, the register 21 is compressed and encoded. The next screen of the program information 1a is supplied, the screen currently stored in the register 21 is erased, and the newly supplied screen and the screen stored in the register 22 are compared.
The comparison is made in step 4, and this process is repeated until the screens differ by a certain value or more. If the comparison result of the comparator 24 is different by a predetermined value or more and it is determined that the scene has changed, the output signal is output from the comparator 24 to the register pair 23, and the screen of the changed scene is accumulated. The contents of the registered register 21 are moved to the register 22, the screen previously accumulated in the register 22 is erased, and the screen newly accumulated in the register 22 is output to the disc recording device 12. Further, thereafter, the screen of the new compression-encoded program information 1a is supplied to the register 21 and the same process is repeated, so that only the screen with the changed scene becomes the thinned-out image 1b as the disc recording device 12 Will be recorded in.

This process is shown in the flow chart of FIG. The screen of the compressed and encoded program information 1a is
Looking at each frame as shown in FIG. 6A, after a number of screens with almost the same contents continue, a scene change suddenly occurs and the screen becomes completely different from the previous screen. Repeating similar screens repeatedly. Then, the thinned-out image 1 generated by the thinned-out image generating device 15 from the screen of the compression-encoded program information 1a.
In b, only the screens of the scenes switched as shown in FIG. 7B are collected and recorded in the disc recording device 12 as a thinned image 1b of one program, and the thinned images 1b collected for each program are The program information 1 is recorded together as shown in FIG.

In this way, the plurality of program information 1 are compression-encoded and recorded in the disc recording device 12, and at the same time, the thinned image 1b corresponding to these program information 1 is recorded in the disc recording device 12. Since the program information 1 and the thinned-out image 1b are compression-coded and recorded, the disk recording device 1 such as a magneto-optical disk or a hard disk.
It is possible to record a lot of long-time program information 1 in 2.

Next, the operation of reproducing the program information 1 (1a) recorded in the disc recording device 12 will be described. When a reproduction request is made by the keypad 7, the thinned-out images 1b recorded in the disk recording device 12 are read out one after another by the recording / reproduction control device 9, expanded by the decoder 13 and displayed on the display device 14 in FIG. Images such as B) are sequentially reproduced. At this time, if the image is recorded with the NTSC signal, the image changes every 1/30 seconds, so slow reproduction is performed or the thinned image 1
b The same screen is recorded for each of a plurality of screens at the time of generation so that the screen can be discriminated at the time of reproduction. Then, the user selects the thinned image 1b reproduced for each program information 1.
When the desired program information 1 is selected and designated by the keypad 7, the recording / reproduction control device 9 reads the designated program information 1 (1a) from the disc recording device 12 and outputs it to the decoder 13. In the decoder 13, the compressed and encoded program information 1a is decompressed to restore the original video signal and audio signal and output to the display device 14,
The designated program information 1 can be reproduced.

In addition, a timer device is provided to record time information such as the recording time, start time, and end time of the program information 1, and the title name and genre name of the program information 1 input from the keypad 7 as necessary. Image 1b for thinning out program identification information
It is also possible to superimpose and display it on the display device 14 at the time of reproduction to assist the retrieval of the program information 1. Since the broadcast receiving / recording / reproducing apparatus described above can reproduce the thinned-out image 1b of the recorded program information 1 on the display device 14, the content of the recorded program information 1 can be confirmed in a short time. It is possible to eliminate the inconvenience that the contents of the recorded program information 1 are not known later.

The program information 1 indicated by the thinned-out image 1b can be reproduced on the display device 14 only by looking at the thinned-out image 1b and selecting a desired one with the keypad 7. Displaying the program information 1 without being aware of which program information 1 is recorded, such as what program information 1 is recorded or how many minutes later it is recorded. You can

A disk recording device 1 is used as a recording medium.
Since 2 is used, there is no need for fast-forwarding and rewinding like tape media, and the time for access is greatly reduced, so program information 1 recorded in any part can be immediately reproduced. You can

Next, a second embodiment of the broadcast receiving / recording / reproducing apparatus of the present invention will be described with reference to FIG. In addition, the above-mentioned first
The same components as those of the embodiment are given the same reference numerals and the description thereof will be omitted. In the second embodiment shown in the figure, the thinned image 1b generated in the first embodiment is indexed so that it can be reproduced even in the middle of the program information 1. The configuration of the embodiment is provided with a frame counter 16 which counts the frame number of each screen of the thinned image 1b by the output signal supplied from the comparator 24 of the thinned image generating device 15 and outputs the frame number to the recording / reproducing control device 9. is there.

When the program information 1 is recorded in the broadcast receiving / recording / reproducing apparatus having such a structure, the thinned image 1b is generated by the thinned image generating apparatus 15 as in the first embodiment. The output signal that is output when the screen of the scene change is detected by the 15 comparators 24 is also output to the frame counter 16.
The frame counter 16 detects the frame number of the screen at the time when the output signal is supplied and outputs it to the recording / reproducing control device 9. Then, in the recording / reproducing control device 9, in the compression-coded program information 1a recorded in the disc recording device 12, the disc recording device 12 is made to correspond to the address where the screen of the supplied frame number is recorded. To record. In this way, the frame numbers of all the thinned-out images 1b generated and the addresses of the corresponding compression-coded program information 1a are recorded in the disc recording device 12.

When reproducing this broadcast receiving recording / reproducing apparatus, a reproduction request is made by the keypad 7, so that the recording / reproducing control apparatus 9 causes the disk recording apparatus 12 to reproduce.
The thinned images 1b recorded in are read one after another,
It is expanded through the decoder 13 and displayed on the display device 14 as shown in FIG.
The images shown in (B) are sequentially reproduced. At this time, the screens are numbered one by one, or the recorded frame numbers are displayed by superimposing them on the thinned-out image 1b. At this time, the user looks at the thinned-out image 1b and the frame number reproduced for each program information 1 and likes the program information 1
When a favorite scene of the program is selected and designated by the keypad 7, the recording / reproduction control device 9 causes the designated program information 1
Disk recording device 12 on which the screen of (1a) is recorded
It is read from the address position of and output to the decoder 13. In the decoder 13, the compression-encoded program information 1a
Is expanded to restore the original video and audio signals, and the display device 1
By outputting to the screen 4, it is possible to reproduce from the screen position of the designated program information 1. With such a configuration, it is possible to easily reproduce even from the screen in the middle of the program information 1.

In the second embodiment, the image change detecting device which detects the scene change screen and outputs the output signal to the frame counter 16 without the thinned image generating device 15 generating the thinned image 1b. And display device 1
Alternatively, the frame number may be displayed in 4 for selective reproduction. Further, when displaying this frame number, the screen corresponding to the frame number of the program information 1 (1a) recorded in the disc recording device 12 is reproduced to superimpose the frame number and the display device is displayed. It may be configured to display on 14. Then, in these cases, the image change detection device causes the disc recording device 12 to display the thinned image 1b.
By not outputting
It has the same configuration as. Furthermore, in each of the above-described first and second embodiments, the thinned image 1b shown in FIG. 2B is sequentially reproduced and selected, but the display of the display device 14 is divided into multiple parts and the thinned image is displayed. 1b may be displayed on a multi-screen and selected.

[0021]

Since the broadcast receiving / recording / reproducing apparatus of the present invention generates and separately records the program information and the thinned-out image of the program information, the program information recorded from the thinned-out image displayed on the display device is recorded. You can know the contents in a short time.
Since program information can be selected from the reproduced thinned-out image, desired program information can be easily reproduced without being aware of which program information is recorded in which part.

Further, since the disk recording device is used as the recording medium, the time required for access is short and the program information recorded in any part can be immediately reproduced. Further, when the address of the compression-coded program information corresponding to the frame number of the image in which the screen change is detected is recorded at the same time, it is possible to easily reproduce even from the screen in the middle of the program information. is there.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a first embodiment of a broadcast receiving / recording / reproducing apparatus of the present invention.

FIG. 2 is a schematic diagram for explaining a method of generating a thinned image.

FIG. 3 is a configuration diagram showing a second embodiment of the broadcast receiving / recording / reproducing apparatus of the present invention.

[Explanation of symbols]

 1 Program Information 1a Compressed and Encoded Program Information 1b Thinned Image 2 Program Transmitting Device (Broadcasting Device) 4,5 Antenna 6 Tuner (Receiving Device) 7 Keypad 8 Operation Signal 9 Recording / Playback Control Device 10 Encoder 11 RAM Buffer Device 12 Disk recording device 13 Decoder 14 Display device 15 Thinned-out image generating device (image generating device) 16 Frame counter 21,22 register 23 Register pair 24 Comparator

Claims (2)

[Claims] 1. A broadcast receiving / recording / reproducing apparatus for receiving program information to be broadcast and recording / reproducing the program information, the receiving apparatus receiving the program information, and the program information received by the receiving apparatus. An encoder that compresses and encodes the program information, an image generation device that detects a screen change of the program information to generate a thinned image, a thinned image generated by the image generation device, and the program information that is compression coded by the encoder. A disc recording device for separately recording and, a decoder for decompressing the program information recorded in the disc recording device to restore the original signal, a recording / reproducing control device for controlling the disc recording device, and the thinned image And a display device for displaying the program information, and the program information to be reproduced by the thinned-out image displayed on the display device. Broadcast receiving, recording and reproducing apparatus being characterized in that to choose a. 2. A broadcast receiving / recording / reproducing apparatus for receiving broadcast program information and recording / reproducing the program information, the receiving apparatus receiving the program information, and the program information received by the receiving apparatus. An encoder that compresses and encodes, an image change detection device that detects a screen change of the program information, a frame counter that detects a frame number of an image detected by the image change detection device, and a frame counter that corresponds to the frame number. A disc recording device for separately recording the address where the image of the program information is recorded and the program information compressed and encoded by the encoder, and the program information recorded in the disc recording device is decompressed to obtain the original program information. A decoder for returning to a signal, a recording / reproducing control device for controlling the disc recording device, the thinned image and the program information It is composed of a display device for displaying the broadcast receiving, recording and reproducing apparatus being characterized in that to choose a playback start screen of the program information to be reproduced by displaying the frame number on the display device.