KR19990013001A - Compression Recording and Extension Methods According to Remaining Storage Media - Google Patents

Abstract

The present invention relates to a method of operating a broadcast recording apparatus for receiving and storing a television broadcast program in a digital storage medium. Specifically, the present invention relates to a first process of detecting an approximate storage capacity required for storing a program to be stored, and currently remaining Comparing the capacity of the second process with the capacity detected in the first process and the second process to determine whether the capacity detected in the second process is larger than the capacity detected in the first process. And a fourth step of compressing and storing the data by reducing the sampling frequency if it is determined that the capacity detected in the second process is smaller than the capacity detected in the first process through the comparison of the third process and the third process. A compression recording method and a decompression method according to the remaining amount of the storage medium.

Description

Compression Recording and Extension Methods According to Remaining Storage Media

The present invention relates to a recording device (e.g., VCR) capable of recording a television broadcast program. In particular, the recording capacity of the means used as a storage medium in the digital recording device is less than the program to be recorded. The present invention relates to a method of compressing, storing, and restoring a program during playback.

In general, a VCR is a device for recording a video signal and an audio signal on a magnetizable video tape, and reproducing the video signal and a voice signal when necessary, so that the VCR can be viewed through a display means such as a CRT or a TV. It is configured as shown, Looking at the configuration, the microcomputer 600 for controlling the overall operation of the VCR by the operation of the keypad (900C) or the remote control (900A), and the data to be processed in the microcomputer 600 Memory 500 for storing the tuner 100, the tuner 100 for receiving the broadcast signal of the channel selected by the tuning voltage output from the microcomputer 600 from the antenna ANT, and the broadcast received by the tuner 100 The IF detector 200 detects the intermediate frequency from the signal, and the head H is applied to the video tape (cassette) mounted on the video technology, operating according to the operation control signal output from the microcomputer 600. The recording unit 300 for recording the signal output from the IF detector 200 and the operation according to the operation control signal output from the microcomputer 600 (usually recoil with respect to the recording unit 300) and the video Reproducing unit 400 for accessing and outputting the signal recorded on the video tape (cassette) that is seated in the tech through the head (H), and receives the character information output from the microcomputer 600 and outputs it as an image OSD generation unit 700 for outputting the corresponding character image, the signal output from the playback unit 400 and the jitter output from the OSD generation unit 700 is processed and transmitted to the TV side or CRT side The signal processor 800 is large.

Referring to the process of recording a television broadcast in the conventional VCR configured as described above are as follows.

If the user wants to record a specific television broadcast program, the user can set a video tape of a predetermined capacity in the videotechnologies, and provide information on a channel for receiving a broadcast program desired to be recorded and a start time and an end time of the program. It is set through the operation of the keypad 900C or the remote controller 900A and stored in the memory 500.

Through the above process, the data stored in the memory 500 serves as reference data necessary for the operation of the microcomputer 600, and the microcomputer 600 starts the corresponding program based on the information stored in the memory 500. It is determined whether the time has passed through timer counting, and when the start time of the corresponding program is reached, the tuner 100 and the recording unit 300 are operated so that the broadcast received through the antenna is placed on the video tape (cassette). Will be recorded.

In addition, when it is determined that the end time of the program is reached by counting the end time, the microcomputer 600 stops the operation of the tuner 100 and the recording unit 300.

In a conventional VCR operating as described above, when the storage medium uses a video tape, it is called a conventional VCR, and when the storage medium uses a digital hard disk or a medium such as DCC, DAT, MD, and so on, it is called DVCR.

In this case, when the user wants to reserve a specific program, even if the recordable data storage capacity of the storage medium is insufficient, the microcomputer 600 does not recognize the data accurately and performs recording normally, but the recording capacity is not completed. The recording operation stops due to the lack of.

Thus, a problem arises in that the user cannot watch the complete broadcast that he / she desires. In particular, even if the user senses the approximate amount of storage capacity, there is a problem that the inconvenience of the user increases because it is not accurately recognized.

In order to solve such a problem, a recent technique proposed in Korean Patent Application No. 97-14062 is 3 times or 4 times to record the recording time of the corresponding program to be reserved for the remaining amount. It proceeds to the double speed recording mode, that is, it drives the recording speed abnormally slow and completely records the program to be recorded.

However, the above-mentioned prior art is a technique applicable to the existing VCR of the analog type, but when using a digital storage medium such as DVCR, there is a problem that the prior art as described above cannot overcome the problems.

An object of the present invention for solving the above problems is to compress and store a program to be recorded when the storage capacity of the means used as a storage medium in the digital recording device is less than the program to be recorded and restore it when playing The present invention provides a compression recording method and an extension method according to the remaining amount of storage medium.

1 is a schematic overall block diagram of a conventional VCR

2 is a flowchart of a compression recording process according to the present invention.

3 is a flowchart of a playback process according to the present invention.

A feature of the present invention for achieving the above object is a method of operating a broadcast recording apparatus for receiving and storing a television broadcast program in a digital storage medium, the method comprising: detecting an approximate storage capacity required for storing a program to be stored; The capacity detected in the second process is detected by comparing the first process, the second process of detecting the current remaining storage capacity, and the capacities detected in the first process and the second process. The third process of determining whether the capacity is larger than the capacity, and if the capacity detected in the second process is smaller than the capacity detected in the first process through the comparison of the third process, the data is compressed and stored by reducing the sampling frequency. To include a fourth process.

Another object of the present invention for achieving the above object is a method for reproducing and compressing and storing data by varying a sampling frequency when a storage capacity is insufficient in a broadcast recording apparatus for receiving and storing a television broadcast program in a digital storage medium. The method may include: a first process of reproducing a program stored in a storage medium for a predetermined time; a second process of determining a storage form based on a form of data reproduced in the first process; and a storage form determined in the second process And interpolating the currently reproduced data into the surrounding data.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a flowchart of a compression recording process according to the present invention, and FIG. 3 is a flowchart of a reproduction process according to the present invention.

First, referring to the accompanying recording process with reference to FIG. 2, in step S101, it is determined whether the reserved recording time preset by the user is reached, and when the reserved recording time is reached, the process proceeds to step S102. In the digital storage medium, the remaining amount can be searched in real time. In step S102, the current recordable capacity is searched to compare the estimated size of the program to be reserved and judge whether or not recording is possible.

If it is determined in the process of step S102 that it is possible to record, and if it is determined that it is possible, the process proceeds to step S103 to perform the normal recording process according to the normal data storage mode. If it is determined in the step S102 whether or not the recording is possible, the process proceeds to step S104 to change the data sampling period to record the program through data compression.

After the recording of the broadcast program is ended as described above, when the user requests reproduction, the operation as shown in FIG. 3 is performed.

Referring to the process shown in Fig. 3, it is determined in step S201 whether the user proceeds to the playback mode at the request of the user. Thereafter, if it is determined that the playback mode is in step S201, the process proceeds to step S202 to play back for a predetermined time. At this time, the screen or sound reproduced in step S202 is not displayed to the outside.

During the process of accessing and reproducing the data stored for a predetermined time in step S202, in step S203, the storage mode of the program to be reproduced in step S202 is detected.

At this time, in step S304, it is determined whether the storage style of the playback screen detected in step S203 is a standard style. If the storage style determined in step S204 is a standard style, the process proceeds to step S205 to perform a normal playback process.

On the other hand, if it is determined in step S204 that it is not a normal storage mode, the flow proceeds to step S206. In step S206, the compressed data is interpolated based on the surrounding pixels or data according to the pattern detected in step S203, converted into normal information, and then reproduced.

Providing a compression recording method and a decompression method according to the remaining amount of the storage medium according to the present invention operating as described above has the effect that it is possible to prevent the broadcast that the user wants to record unrecorded due to lack of storage capacity.

Claims (2)

A method of operating in a broadcast recording device for receiving a television broadcast program and storing it in a digital storage medium, A first step of detecting an approximate storage capacity required for storing a program to be stored; Detecting a current remaining storage capacity; A third step of determining whether the capacity detected in the second process is larger than the capacity detected in the first process by comparing the capacitances of both detected in the first process and the second process; And And a fourth process of compressing and storing the data by reducing the sampling frequency when it is determined that the capacity detected in the second process is smaller than the capacity detected in the first process through the comparison of the third process. Compression recording method according to the remaining amount of media In the broadcast recording device for receiving a television broadcast program and storing it in a digital storage medium, when the storage capacity is insufficient, the reproduction method of the data by compressing and storing the data by varying the sampling frequency, A first step of playing back a program stored in the storage medium for a predetermined time; A second step of determining a storage mode based on the type of data reproduced in the first step; And a third step of interpolating and reproducing the data currently being reproduced according to the storage mode determined in the second step as the surrounding data.