KR100617768B1 - File recording management method for handling multi-bit stream - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-bit stream recorder, and more particularly, to a method of creating and managing a file such that each of a plurality of data streams input through a plurality of channels secures one continuous address space. To this end, in the embodiment of the present invention, a time delay viewing stream file is generated such that bit streams for time delay viewing are stored with consecutive addresses, and a separate reservation is made so that bit streams for reservation recording are stored with consecutive addresses. It is possible to easily access data by creating and managing a recording stream file.

Files, directories, time shifts.

Description

FILE RECORDING MANAGEMENT METHOD FOR HANDLING MULTI-BIT STREAM}             

1 is a block diagram of a broadcast receiving system for time delay viewing.

2 is a file and directory structure diagram for managing multiple bit streams according to an embodiment of the present invention.

3 is a diagram illustrating a logical stream arrangement in the case of managing a file according to an embodiment of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-bit stream recorder, and more particularly, to a method of generating and managing a file such that each of the multiple bit streams input through a plurality of channels has a continuous address.

The hard disk drive, which is a secondary memory device of a computer system, can be randomly accessed, and has a high data transfer speed and a lower cost and a larger capacity than other auxiliary memory devices. It is widely used as an auxiliary memory device for an in-broadcast reception system.

A broadcast receiving system having a hard disk drive is a system capable of simultaneously recording and playing back a broadcast video stream and time shift viewing. Simultaneous recording or reproducing of the time-delayed viewing of the broadcast signal and the video stream may be implemented by buffering the video stream input / output to the hard disk drive.

In a general multi-bit stream recording apparatus, when a video stream is recorded on a recording medium, an address is used as a method of accessing recorded and stored data, which is characterized by a monotonically increasing sequence. However, if a plurality of video streams are represented by a monotonically increasing address in an environment in which data is received through a plurality of channels at the same time, each data string does not have one continuous address space due to the performance of the recording medium. As shown in (a), the addresses of the plurality of video streams STR1 and STR2 are interleaved. In this case, in order to access a block unit of a desired video stream, separate software for identifying an address where a block (recording unit) of the video stream is recorded must be provided.

Accordingly, an object of the present invention is to record by managing by recording and storing each bit stream to be recorded in a separate file when the multi-bit stream input through a plurality of channels in the multi-bit stream recording device to record on the recording medium surface It is to provide a file record management method that can provide ease of data search.

It is still another object of the present invention to provide a method of creating and managing a file such that each of a plurality of data streams input through a plurality of channels secures one continuous address space.

The present invention for achieving the above object in the file recording management method of a multi-bit stream recording apparatus for recording and storing a bit stream input from a plurality of channels on a recording medium,

A first process of generating and recording the time delay viewing stream file so that the bit streams for time delay viewing are stored with consecutive addresses;

A second process of generating and recording a reservation recording stream file so that the bit streams for reservation recording are stored with consecutive addresses;

And a third process of generating and recording a stream record information file in which search data for searching for bit streams recorded on the recording medium is stored.

Hereinafter, a file management method according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a broadcast receiving system for time delay viewing, FIG. 2 is a diagram illustrating a file and directory structure for managing multiple bit streams according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. An example of a logical stream arrangement in the case of managing a file according to an example is shown.

Referring to FIG. 1, the configuration of a broadcast receiving system as a multi-bit stream recording apparatus according to an embodiment of the present invention, the broadcast signal receiving unit 10 receives an RF tuner 12 for receiving a digital broadcast signal input from the outside. And a plurality of RF tuners 14 and 16 for receiving an analog broadcast signal input from the outside, and a plurality of RF signals converted into a digital signal and compressed by converting the analog signals input through the plurality of RF tuners 14 and 16. Video compressors 18, 20, and 22.

The random access storage device 30 records and stores a bit stream input from the broadcast signal receiving unit 10 on the hard disk surface of a recording medium under the control of the control unit 40, and reads the stored bit stream to store a video reconstruction unit ( 50). The random access storage device 30 described above has dual port RAM 32 for temporarily storing the bit stream, hard disk (s) for permanently storing the bit stream, and drive of the drive, as is already known. It consists of an HDD control unit for controlling the expansion unit for expanding the hard disk drive (HDD). The extension refers to the IEEE 1394 interface.

The video reconstructor 50 restores the bit stream output from the random access storage device 30 to the original signal via the system bus and outputs the original signal to the television receiver 90.

The controller 40 is a ROM for storing control program data for controlling the random access storage device 30 and the broadcast signal receiving unit 10, and a RAM for temporarily storing data generated during a control operation. And a memory configured.

The remote controller 60 includes a plurality of control keys for system control, and generates and outputs data according to the operation of the control key to the controller 40. The plurality of adjustment keys are composed of adjustment keys for inputting a pause, rewind, and fast search command.

The computer connection unit 70 interfaces signals transmitted and received between the broadcast receiving system and the computer, and the time checker 80 informs the time information so that the broadcast receiving system can perform automatic recording.

Hereinafter, the structure of files and directories generated and managed by the control unit 40 of the broadcast receiving system having the above-described configuration will be described.

First, a multi-bit stream according to an embodiment of the present invention has a file and directory structure as shown in FIG. Referring to Fig. 2, all data streams recorded in the hard disk recording area according to the embodiment of the present invention are recorded in the " stream recording directory 110 ". That is, all files associated with a program set are recorded in the stream recording directory 110. The " program set " refers to all content recorded on the disc in the following description, and is composed of a program that is a logical unit of content continuously recorded. Accordingly, in the embodiment of the present invention, the files related to the program set are stored in the stream record information (STR_REC.IFO) file 120, the stream file for viewing time delay (STR_REC.AVT) 130, and the reserved recording stream file (STR_REC.AVR). (140) and stream record information backup file (STR_REC.BAK) 150 to manage.

The stream record information (STR_REC.IFO) file 120 shows a file in which navigation data such as a program set, a program, an entry point, and the like are stored. The "entry point" indicates a predetermined position of a program, and it is inconvenient for the user to limit the position that can be entered into the program only at the beginning of the program when the bit stream constituting the program is long. In this regard, an entry point is defined to be accessible by jumping from a current position to an adjacent position before and after. The entry point may be automatically generated by using an EPG (Eletronic Program Guide) or the like, but may also be generated by a user's manipulation. For example, if the user wants to play only the front part of the program and the rest of the next day, the user may end the previous part playback of the program and store the position as an entry point.

The time-delayed viewing stream file (STR_REC.AVT) 130 is a file storing a source packet added with a time stamp to a packet (especially a transport packet) received from a broadcast (or an external network). Specifically, only the stream for time shift viewing is stored among the multiple bit streams.

The reserved recording stream file (STR_REC.AVR) 140 stores a stream recorded by a user's operation such as scheduled recording, and the stream recording information backup file (STR_REC.BAK) 150 backs up the stream recording information. It is preferable that the file represents a file and is recorded at a location physically different from that of the stream recording information (STR_REC.IFO) 120 file.

As described above, in the present invention, each bit stream input to a plurality of channels, that is, a time-delay viewing channel and a reserved recording channel, in a multi-bit stream recording apparatus is one as shown in FIGS. 3B and 3C. By creating and managing separate files to have consecutive addresses, the recording unit (also called a block) of the corresponding bit stream can be easily accessed.

Meanwhile, in the exemplary embodiment of the present invention, only the files for storing the time delay viewing stream and the reserved recording stream are generated and managed. However, the file may be generated so that a continuous address is assigned to all data recorded on the recording medium. It may be.

Although specific embodiments of the present invention have been described and illustrated as above, it is obvious that the present invention can be variously modified and implemented by those skilled in the art. And since the present invention has been described in the present invention through a preferred embodiment of the present invention, when considering the technical difficulty aspects of the present invention, those skilled in the art can easily be modified to another embodiment and other embodiments of the present invention As can be added, it will be apparent that all embodiments and modifications cited in the above description belong to the appended claims.

As described above, the present invention generates a file having a continuous address for each of the multiple bit streams input through a plurality of channels, so that a block of a desired recording unit can be accessed without additional software, and file management There is an advantage that can provide ease of use.

Claims (5)

In the file recording management method of a multi-bit stream recording apparatus for recording and storing a bit stream input from a plurality of channels on a recording medium, A first process of generating and recording the time delay viewing stream file so that the bit streams for time delay viewing are stored with consecutive addresses; A second process of generating and recording a reservation recording stream file so that the bit streams for reservation recording are stored with consecutive addresses; And a third process of generating and recording a stream record information file in which search data for searching for bit streams recorded on the recording medium is stored. The method of claim 1, further comprising a fourth step of additionally generating and recording a backup information file of the stream recording information. The method of claim 1, wherein the search data comprises; A program set consisting of programs recorded on the recording medium; Information about the program, which is a logical unit of continuously recorded content, And at least an entry point for designating a specific position of an arbitrary program. In the file recording management method for recording a multi-bit stream in a broadcast receiving system having a disk storage device, A first step of creating and recording a stream recording directory for managing data recorded on the disc; A second process of generating a first file so that the bit streams of the time-delayed viewing channel are stored with consecutive addresses, and recording as a first file of the stream recording directory; A third process of generating a second file so that the bit streams of the reserved recording channel are stored with consecutive addresses, and recording as a second file of the stream recording directory; And a fourth process of generating a third file of the stream recording directory and recording and storing search data in the generated third file. 5. The file recording management method of claim 4, further comprising a fifth step of additionally generating and recording a backup information file of the search data as a fourth file of the stream recording directory.

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