KR100705180B1 - Apparatus and Method for Transport Stream Recording Control in Discmedia - Google Patents

Abstract

The present invention relates to a transport stream recording control apparatus, and more particularly, to a transport stream recording control apparatus and a method for reading a transport stream stored in a hard disk and recording it on an optical disk medium at high speed.

In the recording control method of the transport stream according to the present invention, the storage and output operations to the first and second buffer memories are paralleled using semaphore synchronization so that the transport stream data stored in the hard disk is read out and written to the optical disk medium. CLAIMS 1. A method for controlling transport stream recording to a disk medium to be performed on a processing basis, the method comprising: receiving and storing the transport stream on a hard disk; Storing and outputting the stored transport stream sequentially in a first buffer memory having a plurality of buffer areas according to semaphore counts; Temporarily storing a transport stream sequentially output from the first buffer memory in an interface unit; Sequentially storing and outputting a transport stream temporarily stored in the interface unit in a second buffer memory having a plurality of buffer areas according to semaphore counts; And recording the transport streams sequentially output from the second buffer memory on an optical disc medium.

HD stream, DVD, PVR

Description

Apparatus and Method for Transport Stream Recording Control in Discmedia}

1 is a block diagram showing an apparatus for controlling transport stream recording to a disk medium according to an embodiment of the present invention.

2 is a block diagram illustrating a storage / transmission / recording process of a transport stream according to an embodiment of the present invention.

3 is a flowchart illustrating a method of controlling transport stream recording to a disk medium according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

1st module 101 ... tuner / demodulator

103 Stream controller 107 Hard disk

109 First buffer memory 111 Central processing unit

113 Video decoder 120 Interface section

130 2nd module 131 DVD controller

133 Second buffer memory 135 Optical disc loader

The present invention relates to a transport stream recording control apparatus, and more particularly, to a transport stream recording control apparatus and a method for reading a transport stream stored in a hard disk and recording it on an optical disk medium at high speed.

BACKGROUND With the development of digital technology, a personal video recorder (PVR) for storing, reproducing, and outputting predetermined AV data in a hard disk driver used as a data storage device in a computer system has been developed and used.

The PVR is a digital broadcast signal of ATSC (Advanced Television Systems Committee) and an analog broadcast signal of National Television Standards Committee (NTSC), as well as a DVD (Digital Video Disk) player, VHS (Video Home System) and VCR (Video). AV data input from various AV output devices including Cassette Recorder, etc. can be stored in the hard disk drive, transmitted to a playback and digital television receiver for viewing, as well as time shifting and trick play. It also allows you to take advantage of advanced features such as:

In recent years, the PVR is not used alone, and digital and analog television broadcast signals received by being integrated into a set-top box or a digital television receiver, and AV data input from external AV output devices are recorded and reproduced. We can watch.

However, the conventional method of storing the transport stream data on the optical disk medium has applied a method of transmitting the following data after the process of reading the data stored on the hard disk and recording the data on the optical disk medium.

Therefore, when recording the transport stream data on the optical disk medium, the standby state occurs because other operations cannot be performed in parallel until the data stored in the hard disk is read and the recording on the optical disk medium is completed, so that the devices cannot be used efficiently.

In addition, there is a problem that the recording processing speed for recording the transport stream data on the optical disk medium is slow and the recording time is long.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and is configured to be executed simultaneously by separately separating the storage / transmission / output processes for reading the transport stream data stored in the hard disk to be recorded on the optical disk medium, thereby providing an HD broadcast stream. An apparatus and method for controlling transport stream recording to a disk medium which enables recording at a high speed to an optical disk medium.

An apparatus for controlling transport stream recording to a disk medium according to an embodiment of the present invention for achieving the above object,

It is possible to record HD broadcasting streams on optical disk media at high speed by separating the storing and output processes that read transport stream data stored in hard disk and recording them on optical disk media and executing them simultaneously according to semaphore count. An apparatus for controlling transport stream recording to a disk medium,

A hard disk for storing the received transport stream;

A first buffer memory having a buffer area divided into a plurality of ring buffers, wherein the transport stream is sequentially stored and output in each buffer area;

Storage and output of the first buffer memory according to the semaphore count so that the transport stream stored in the hard disk is sequentially stored in the buffers of the first buffer memory, and the transport streams stored in each buffer of the first buffer memory are sequentially output. A central processing unit controlling the;

An interface unit for storing the transport stream output from the first buffer memory and transmitting the stored stream to an optical disk module;

A second buffer memory having a buffer area divided into a plurality of ring buffers, wherein the transport stream is sequentially stored and output in each buffer area;

A second buffer memory according to the semaphore count so that the transport stream stored from the interface unit is sequentially stored in the buffers of the second buffer memory, and the transfer scrims stored in each buffer of the second buffer memory are sequentially recorded on the optical disk medium. An optical disk controller for controlling the storage and output of the optical disk;

And an optical disc loader for controlling the transport stream output by the optical disc controller to be recorded on the optical disc medium.

Preferably, the central processing unit and the optical disk controller is characterized in that to perform the storage and output operation of the buffer memory on a parallel processing basis.

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On the other hand, the transport stream recording control method to a disk medium according to another embodiment of the present invention,

Transport stream to disk medium that allows storage and output operations to the first and second buffer memories to be performed on a parallel processing basis using semaphore synchronization, respectively, in order to read transport stream data stored on the hard disk and write them to the optical disk medium. In the recording control method,

Receiving and storing the transport stream on a hard disk;

Storing and outputting the stored transport stream sequentially in a first buffer memory having a plurality of buffer areas according to semaphore counts;

Temporarily storing a transport stream sequentially output from the first buffer memory in an interface unit;

Sequentially storing and outputting a transport stream temporarily stored in the interface unit in a second buffer memory having a plurality of buffer areas according to semaphore counts;

And recording the transport streams sequentially output from the second buffer memory on an optical disc medium.

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Preferably, the first buffer memory and the second buffer memory are characterized in that each of the ring buffer form having two or more buffer areas.

Hereinafter, with reference to the accompanying drawings as follows.

1 is a block diagram showing an apparatus for controlling transport stream recording to a disk medium according to an embodiment of the present invention.

Referring to FIG. 1, a first module 100 having a PVR function, a second module 130 for storing and reproducing an optical disk medium, and an interface unit for connecting the first module and the second module to each other 120.

The first module 100 includes: a tuner / demodulator 101 for channel tuning and demodulation of digital broadcast signals; A stream controller (TS Controller) 103 for delivering the demodulated transport stream (TS) to an encrypted transport stream (ETS); A bus bridge portion 105 connected to the system bus 104; A hard disk (HDD) 107 for buffering a transport stream transmitted through the bus bridge section; A first buffer memory (109) for temporarily storing the transport stream; An image decoder (113) for playing the transport stream; An image memory (115) for temporarily storing the stream when playing the stream; It comprises a central processing unit 111 for controlling each unit through the system bus.

In addition, the second module 130, an optical disk loader (130) for recording the transport stream transmitted from the first module 100 through the interface unit 120 to the optical disk medium; A DVD controller (131) for controlling the optical disc loader (130); And a second buffer memory 133 for temporarily storing data recorded and reproduced on the optical disc medium by the DVD controller 131.

Here, the first buffer memory 109, the image memory 115, and the second buffer memory 133 are preferably composed of synchronous dynamic random access memory (SDRAM), and the interface unit 120 is preferably DPRAM (Dual). -Port RAM).

In addition, the first buffer memory 109 and the second buffer memory 133 are separated into a ring buffer having a plurality of buffer areas.

In addition, the bus bridge portion 105 is preferably composed of a PCI / IDE bus bridge, the system bus 104 is preferably composed of a Peripheral Component Interconnect (PCI) bus.

A transport stream recording control apparatus for a disc medium according to an embodiment of the present invention configured as described above will be described with reference to the accompanying drawings.

The apparatus for controlling a transport stream recording to a disk medium is a configuration in which a first module 100 and a second module 130 are combined, and the first module 100 and the second module 130 are connected to the interface unit 120. The data is sent / received by the connection. Such a composite device will function as an optical disc recorder (eg, a DVD recorder) with a hard disc.

The first module 100 is a recording / playback module (ie, a PVR module), and the second module 130 is composed of an optical disk module (eg, a DVD module), and an optical disk medium includes a DVD and a Blu-ray disk (Blu-). ray Disc). In addition, the interface unit 120 uses DPRAM, for example.

The first module 100 includes a tuner / demodulator 101, a stream controller 103, a bus bridge unit 105, a first buffer memory 109, a central processing unit (CPU) 111, and an image decoder ( MPEG Decoder) 113, and image memory 115 are configured.

The tuner / demodulator 101 receives a broadcast signal through channel selection of a digital broadcast signal, converts the received broadcast signal into a digital transport stream (TS), and outputs the converted broadcast signal.

The stream controller 103 is connected to a system bus 104 and performs PID (Packet ID) filtering on the demodulated transport stream under the control of the CPU 111, and for copy protection. Encrypt and accumulate in an internal buffer.

Here, the stream controller 103 performs encryption on the transport stream at the time of recording or storing, and decrypts at the time of reproduction. This encryption and decryption function may be specified by the user as an option.

The CPU 111 reads a predetermined amount of stream data through the system bus 104 and temporarily stores the stream data in the first buffer memory 109.

Since the terrestrial transport stream is a transport stream (TS) format, buffering is required to store this transport stream format directly on an optical disc medium (eg, DVD RW).

At this time, the hard disk 107 is used as the buffering means, and when stored in the hard disk 107, for example, it is stored in the form of a time stamp of 4 bytes and an encryption of TS 188 bytes.

The transport stream stored in the hard disk 107 can be reproduced in real time through the image decoder 113, and the transport streams stored in the hard disk 107 are one broadcast program, respectively. Storage within the capacity is possible. In addition, the user may view the list recorded on the hard disk, select DVD copy, and record the corresponding broadcast program on the optical disk medium.

In this manner, the transport stream stored in the hard disk 107 can be recorded and reproduced on the optical disk medium by the user's setting.

To this end, the central processing unit 111 writes one block of data stored in the hard disk 107 to the first buffer memory 109 in order to record the transport stream data stored in the hard disk 107 on the optical disk medium. Store the data and transmit the stored data to the DPRAM 120.

In addition, data is read from the DPRAM 120 and stored in the second buffer memory 133 of the DVD module, which is the second module 130, and the stored data is stored in the optical disk loader 135 using the DVD controller 131. The recording process is performed, and the storage / transmission / recording process is separated and performed based on parallel processing so as to be executed in different tasks.

2 is a block diagram illustrating a storage / transmission / recording process of a transport stream according to an embodiment of the present invention.

Referring to FIG. 2, a block of data read from the hard disk 107 for storing / transmitting / recording a transport stream to a DVD module which is a first module or a second module at a high speed is stored in the central processing unit 111. 1 is stored in the buffer memory 109.

The data stored in the first buffer memory 109 is transmitted to the DVD module through the DPRAM 120, and the DVD controller 131 reads data from the DPRAM 120 and stores the data in the second buffer memory 133. After that, the data is recorded on the optical disk loader 135.

Here, the first buffer memory 109 and the second buffer memory 133 are separated in the form of a ring buffer to prevent the change of the new data before the transfer of data stored in each of the separated buffer is completed. Can be.

In addition, the data storage / transmission / writing process is performed separately based on parallel processing, and a semaphore is placed on each to synchronize synchronization between tasks.

The semaphore is used to share memory space or to share access to files, and to execute the separated storage / transfer / write process in different tasks to adjust the semaphore count so that the semaphore can be executed in parallel. do.

For example, the central processing unit 111 reads the transport stream data stored in the hard disk 107 and writes to the first buffer 109-1 of the first buffer memory 109 which is separated in the form of a ring buffer. Save the data.

Data stored in the first buffer 109-1 of the first buffer memory 109 is transmitted to the DVD module through the DPRAM 120, wherein the CPU 111 transmits the data stored in the hard disk 107. The stream data is read and stored in the second buffer 109-2 of the first buffer memory 109.

That is, the CPU 111 sequentially stores the transport stream data in the first buffer memory 109 and outputs the already stored transport stream data through the interface unit. The storage and output operations are independent of each other.

In addition, at this time, a semaphore is generated in each process, and the task waiting for the semaphore is performed by the count of the semaphore.

In detail, if the semaphore value that can access the DPRAM 120 is 1, when the semaphore value of the DPRAM 120 becomes 1, the data of the first buffer 109-1 is transferred to the DPRAM 120. In this case, the semaphore value of DPRAM 120 is reduced to 0 to block data access of another buffer.

When the data transfer of the first buffer 109-1 is completed, the semaphore value of the DPRAM 120 is increased to 1 again to enable data transfer of the next buffer.

As described above, the first module reads one block of data from the hard disk 107 and stores data in the buffers 109-1 to 109-5 of the first buffer memory 109 separated into ring buffers. The process of transferring the data to the DPRAM 120, completing the data transfer process, and reading and storing the data from the hard disk 107 again in the buffer in which the memory space is empty is performed by adjusting the semaphore count.

In addition, the DVD module, which is a second module, reads the transmitted data from the DPRAM 120 and stores the data in the buffers 133-1 and 133-2 of the second buffer memory 133 separated in a ring buffer form. Data stored in the respective buffers is recorded on the optical disc medium.

That is, the DVD controller 131, which is an optical disk controller, sequentially stores the transport stream data in the second buffer memory 133, reads the already stored transport stream data, and outputs it to the optical disk medium for recording. The storage and output operations are independent of each other.

At this time, the data writing process is completed and the process of reading data from the DPRAM 120 and storing the data again in a buffer having an empty memory space is performed by adjusting the semaphore count.

As described above, when the data stored in the second buffer 109-2 of the first buffer memory 109 is transferred to the DPRAM 120, the first buffer 133 of the second buffer memory 133 is transmitted. Data stored in -1) can be recorded in the optical disk loader 135.

In addition, the data transferred from the second buffer 109-2 of the first buffer memory 109 is read from the DPRAM 120 and stored in the empty first buffer 133-1 of the second buffer memory 133. At this time, the hard disk reads one block of data and stores the data in the second buffer 109-2, which is empty in the first buffer memory 109, and at this time, the third buffer of the first buffer memory 109 ( Data stored in 109-3 may be transmitted to the DPRAM 120.

In this manner, each of the storage / transmission / writing processes are separated and processed in parallel, and a semaphore is placed in each of the separated processes to synchronize the synchronization. In other words, the first buffer memory 109 of the central processing unit 111 is synchronized. ) And the operation of storing and outputting the transport stream data in the second buffer memory 133 by the DVD controller 131 are performed independently or in parallel. This allows the central processing unit 111 and the DVD controller 131 to store and output a transport stream using two or more buffers provided in a buffer memory independently of each other without giving control to the other party. .

As described above, according to the present invention, the recording / transporting / recording process is separately executed to record the transport stream data on the optical disk medium and executed in different tasks, and the semaphores are separately stored in order to synchronize the tasks. It is possible to improve the recording processing speed and recording time by performing the transmission / recording process on a parallel processing basis.

In addition, when the transport stream is recorded on the optical disc medium, information on a broadcast program is also stored. A copy status flag of the broadcast program exists so that information such as copy never or copy once may be included. .

Furthermore, predetermined information is recorded on the optical disc medium to identify that the transport stream has been stored. That is, the optical disc medium is divided into recording information, reproduction information, and data area for the transport stream, and the title, language, time, file size, etc. of the transport stream are recorded in the recording information area, and the playback position and device in the reproduction information area. Information and the like.

In addition, the interface unit 120 connecting the first module 100 and the second module 130 is composed of DPRAM, and the interface unit 120 transfers high-speed data between two processors (CPU, DVD controller). For this purpose, the dual port RAM area is divided into two channels. The two channels are divided into a data transmission control channel and a data transmission channel. The data transmission channel transmits only the size information in units of blocks without adding additional transmission protocol data to increase data transmission efficiency.

On the other hand, the data recorded on the optical disk medium of the second module 130 is reproduced in the reverse order. That is, the DVD controller 131 of the second module 130 reads data from the optical disk medium and stores the data in the second buffer memory 133 and stores the data stored in the second buffer memory 133 through the DPRAM 120. The first buffer memory 109 may be stored in the first buffer memory 109 and then stored in the hard disk 107 and decoded by the stream controller 103 and then played back through the image decoder 113.

Similarly, semaphores are placed in the processes, and each process is performed on a parallel basis by counting the semaphores.

In this way, the optical disk recorder having a hard disk can read and play the transport stream recorded on the disk medium while recording the transport stream data received from the broadcast receiving module such as the PVR module on the disk medium of another module. In addition, by providing a means for transmitting and receiving transport stream data at high speed between the PVR module and the DVD module, it is possible to minimize the delay time due to buffering and to guarantee real-time data transmission.

3 is a flowchart illustrating a method of controlling a transport stream recording to a disk medium according to an embodiment of the present invention.

Referring to FIG. 3, first, a broadcast signal is received (S100), and transport stream data is demodulated from the received broadcast signal and stored in a hard disk (S102).

It is determined whether the stored data is recorded on the disk (S104), and as a result of the determination, the first buffer reads the data stored in the hard disk to record the data on the disk, and is divided into a ring buffer so as to have a plurality of buffer areas. Each buffer area of the memory is stored (S106), and the data stored in the first buffer memory is transferred to the DPRAM (S108).

In addition, the data transferred to the DPRAM is read and stored in the second buffer memory of the DVD module separated into a ring buffer form to have two or more buffer areas (S110), and the data stored in each buffer area of the second buffer memory. Is recorded on the optical disk medium (S112).

A semaphore is also placed in the storage / transmission / recording step, and the semaphore count is adjusted to enable storage / transmission / recording of the transport stream in parallel.

As described above, the present invention reads the data stored in the hard disk and stores the data in the first buffer memo, transfers the stored data to the DPRAM, reads the data from the DPRAM to the second buffer memory of the DVD module. There is an advantage of improving the recording processing speed and the recording time by separating the storing step and the recording of the data stored in the second buffer memory on the optical disc medium, and adjusting the semaphore count to be performed based on parallel processing.

So far, the present invention has been described with reference to the preferred embodiments, and those skilled in the art to which the present invention pertains to the detailed description of the present invention and other forms of embodiments within the essential technical scope of the present invention. Could be implemented. Here, the essential technical scope of the present invention is shown in the claims, and all differences within the equivalent range will be construed as being included in the present invention.

According to the present invention, there is provided a recording control apparatus and method for transport stream recording, which improves the recording processing speed and the recording time by performing parallel and simultaneous storage / transmission / recording processes so that the transport stream can be stored on the optical disk medium at high speed. It is effective to shorten.

In addition, according to the present invention there is an effect that can be applied to the transmission and reception of data between different CPUs sharing the interface unit as well as the transmission stream.

Claims (7)

It is possible to record HD broadcasting streams on optical disk media at high speed by separating the storing and output processes that read transport stream data stored in hard disk and recording them on optical disk media and executing them simultaneously according to semaphore count. An apparatus for controlling transport stream recording to a disk medium, A hard disk for storing the received transport stream; A first buffer memory having a buffer area divided into a plurality of ring buffers, wherein the transport stream is sequentially stored and output in each buffer area; Storage and output of the first buffer memory according to the semaphore count so that the transport stream stored in the hard disk is sequentially stored in the buffers of the first buffer memory, and the transport streams stored in each buffer of the first buffer memory are sequentially output. A central processing unit controlling the; An interface unit for storing the transport stream output from the first buffer memory and transmitting the stored stream to an optical disk module; A second buffer memory having a buffer area divided into a plurality of ring buffers, wherein the transport stream is sequentially stored and output in each buffer area; A second buffer memory according to the semaphore count so that the transport stream stored from the interface unit is sequentially stored in the buffers of the second buffer memory, and the transfer scrims stored in each buffer of the second buffer memory are sequentially recorded on the optical disk medium. An optical disk controller for controlling the storage and output of the optical disk; And an optical disc loader for controlling the transport stream output by the optical disc controller to be recorded on the optical disc medium. The method of claim 1, And the central processing unit and the optical disk controller are configured to perform the storage and output operations of the buffer memory on a parallel processing basis. delete delete Transport stream to disk medium that allows storage and output operations to the first and second buffer memories to be performed on a parallel processing basis using semaphore synchronization, respectively, in order to read transport stream data stored on the hard disk and write them to the optical disk medium. In the recording control method, Receiving and storing the transport stream on a hard disk; Storing and outputting the stored transport stream sequentially in a first buffer memory having a plurality of buffer areas according to semaphore counts; Temporarily storing a transport stream sequentially output from the first buffer memory in an interface unit; Sequentially storing and outputting a transport stream temporarily stored in the interface unit in a second buffer memory having a plurality of buffer areas according to semaphore counts; And recording the transport streams sequentially output from the second buffer memory on an optical disc medium. delete The method of claim 5, And the first buffer memory and the second buffer memory are each in the form of a ring buffer having two or more buffer areas.

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