KR20040072145A - PVR digital broadcasting receiver and the reserved recording method - Google Patents

Abstract

PURPOSE: A PVR(Personal Video Recorder) digital broadcasting receiver is provided to enable a user to set a period while receiving EPG data to update reserved recording information, and to turn on system power during the set period, thereby saving power. CONSTITUTION: A tuner and demodulator(100) receives/demodulates a broadcasting stream including EPG data for a selected channel. A demultiplexer(110) separates the broadcasting stream into audio/video/data streams. A decoder(120) decodes the audio/video streams. A memory(130) stores the audio/video streams, reserved recording information, and the EPG data. A CPU(140) controls the tuner and demodulator(100), the demultiplexer(110), the decoder(120), and the memory(130), generates a reserved recording information update event and a reserved recording event, and performs updating/reserved-recording processes.

Description

PVR digital broadcasting receiver and reserved recording method using the same

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reservation recording method using an EPG, and more particularly, to a PVR digital broadcast receiver for performing reservation recording by updating reservation recording information and a reservation recording method using the same.

In recent years, the digitization of television broadcasts is progressing rapidly.

A stream transmitted in digital broadcasting may transmit data information together with a video / audio signal. Here, the data information transmitted along with the video / audio signal is based on markup data such as HTML of ATVEF (Advanced Television Enhancement Forum), XDML of Digital TV Application Software Environment (DASE), and Xlet of DASE. Java-based data information.

Therefore, in the digital broadcasting as described above, it is possible to broadcast data in various formats in addition to the video and audio that have been broadcast in conventional analog television.

Here, digital broadcasting is a next-generation broadcasting technology capable of two-way operation, reproduction, and accumulation, unlike conventional analog broadcasting. The term digital broadcasting refers to television broadcasting that encodes a signal of information and compresses the television signal in a digital form.

Conventional analogue television broadcasting can only carry one video in one radio wave, and audio has to be transmitted in another radio wave. However, digital broadcasting has a deterioration in quality besides the advantage of loading multiple images or audio in one radio wave. Since information can be compressed without dropping, it is possible to set 4 to 8 channels in the frequency band of a conventional analog broadcast channel. In addition, it is easy to control information using a computer, and interactiveity is possible to export information ordered from the viewer side.

In preparation for the above digital broadcasting, many companies are developing digital televisions or set-top boxes capable of receiving digital broadcasting and data broadcasting.

The digital television developed in response to the above digital broadcasting refers to a television that can add a high quality screen reproduction and various functions by converting the received broadcasting signal into a digital code. Generation television.

The digital television not only prevents deterioration of video and audio signals by converting analog signals sent from broadcasting stations into digital signals by attaching separate integrated circuits that can add various functions, but also accurately restores them. You can't see the dual picture caused by reflections and no noise at all.

In addition, the number of scanning lines is 1,050, which makes the screen clearer, and it is possible to compose multiple screens by storing and processing broadcast signals, so that two or three broadcasters can be simultaneously viewed on one television screen, and the operation stops at the moment. You can also enlarge it, and you can check the memorized operation or pull it to the printer.

Recently, a PVR (Personal Video Recorder) digital broadcast receiver product for recording / reproducing digital broadcasts by embedding a storage medium such as a hard disk has been developed and marketed.

These products are expected to rapidly replace the existing video cassette recorder (VCR) products, especially with the full-fledged digital broadcasting.

The PVR digital broadcasting receiver is usually equipped with a high performance CPU and uses a file recording method such as a hard disk (HDD) so that the user can randomly select a desired program and make a scheduled recording. The advantage is that you can watch.

Accordingly, the PVR digital broadcast receiver should show a list of programs stored on the screen through an EPG (Electronic Program Guide) and provide a function for selecting a desired program.

In general, in the method of reserved recording using a PVR digital broadcast receiver, when the reserved recording time is reached after setting the reserved recording, the scheduled recording is performed according to the time setting of the reserved recording.

1 is a flowchart illustrating a method of reserved recording of a broadcast using a conventional PVR digital broadcast receiver.

First, when a video / audio / data stream is transmitted from a broadcasting station, an EPG is obtained from this data stream showing information about the broadcast program (information on time, plot, recording, etc.).

The user registers a desired recording program by using the EPG, and when the reserved recording is registered, the information is stored in the EEPROM, which is a nonvolatile memory, in the order of the reserved recording time in the PVR digital broadcasting receiver.

Thereafter, even if the system power of the PVR digital broadcast receiver is turned on or turned off, the microcomputer of the PVR digital broadcast receiver is in a standby state (powered by the microcomputer) for reserved recording (S100). ).

When the scheduled recording start time for the broadcast program that the user wants to record is reached, the system is turned on (S120), and the system tunes a channel through which the reserved recording program is transmitted using information stored in the EEPROM ( S130).

Subsequently, the scheduled recording program is recorded on the hard disk (HDD) of the PVR digital broadcasting receiver (S140). When the recording time ends, the recording is ended (S150).

After deleting the information corresponding to the recording program is completed in the EEPROM, it is determined whether there is a next scheduled recording program (S160), and if there is the next reserved recording information, it is registered in the first order, and reserved for the registered program The recording start time is set in the microcomputer (S170).

Then, the power of the system is turned off (S180), and the standby state (the power of the microcomputer is turned on).

If there is no next scheduled recording information, shut down the system.

Here, the above operation is repeated until all the reserved recording programs registered by the user are recorded, and then, the process ends.

In the conventional reservation recording technology, a user registers a reservation recording through the EPG (from now to several days later). When the broadcast program broadcast time is changed due to a broadcasting station, the reservation recording information stored in the system is actually broadcast. Since it is different from the time, the scheduled recording is not properly performed for the desired broadcasting program.

In other words, if the user broadcasts another program whose scheduled recording time is changed during the scheduled recording time, the system records an unwanted program. When a user attempts to watch a broadcast registered by himself / herself, there is a problem of seeing a wrong broadcast.

According to the present invention, if a digital broadcasting receiver having a PVR function intends to reserve recording for a desired broadcast program using EPG data, when a change is made to EPG data, a reservation recording update event is automatically generated by comparing a change in the EPG data. It is an object of the present invention to provide a PVR digital broadcast receiver capable of flexibly coping with a change in broadcast time of a broadcast program and a reservation recording method using the same.

1 is a flow chart illustrating a method for pre-recording a broadcast using a conventional PVR digital broadcast receiver.

2 is a diagram showing the configuration of a PVR digital broadcast receiver according to the present invention;

3 is an embodiment of a table showing reserved recording information when performing reserved recording using a PVR digital broadcast receiver according to the present invention.

4 is a flowchart showing a method of performing reservation recording and reservation recording information updating in a PVR digital broadcasting receiver according to the present invention.

<Description of Signs of Major Parts of Drawings>

100 tuner and demodulator 110 demultiplexer

120: decoder section 130: memory section

140: central processing unit

In order to achieve the above object, a PVR digital broadcast receiver according to the present invention comprises: a tuner and a demodulator for receiving and demodulating a broadcast stream including EPG data for a selected channel; A demultiplexer unit for separating the broadcast stream into audio / video / data; A decoder to decode the audio / video stream; A memory unit for storing the audio / video stream, reserved recording information, and EPG data; And a central processing unit that controls the tuner, the demodulator, the demultiplexer, the decoder, and the memory, and generates and updates the reserved recording information update event and the reserved recording event.

The reserved recording information is characterized in that the program is registered by the user using the EPG data and stored in chronological order.

The reservation recording information update event may be generated every cycle set by a user.

The reserved recording event may be generated at a start time of a scheduled broadcast program.

In addition, a reservation recording method using a PVR digital broadcast receiver according to the present invention in order to achieve the above object, the step of generating a reservation recording information update or a reservation recording event; Receiving EPG data in a reserved recording program set to update and store the changed information when the reserved recording information updating event occurs; Recording a program when the reserved recording event occurs.

The reservation recording information update event may be generated every user set period.

The system is powered on when the reserved recording information update event or a reserved recording event occurs.

The reserved recording information is characterized in that the program is reserved recording set by the user using the EPG data and stored in chronological order.

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

2 is a diagram showing the configuration of a PVR digital broadcast receiver according to the present invention.

Referring to FIG. 2, the PVR digital broadcasting receiver includes a tuner and demodulator unit 100, a demultiplexer unit 110, a decoder unit 120, and a memory unit. And a central processing unit (CPU) 140.

The tuner and demodulator 100 receives a digital broadcast stream for the selected channel, demodulates it, and transmits the demodulated signal to the demultiplexer 110 under the control of the central processing unit 140.

Under the control of the central processing unit 140, the demultiplexer unit 110 separates the demodulated transport stream received from the tuner and the demodulator 100 into video / audio / data and the like and the decoder unit 120. To send.

The decoder 120 decodes the video / audio stream transmitted from the decoder 120 under the control of the central processing unit 140.

The decoded video / audio data is stored in a memory unit 130 such as an MPEG memory.

The memory unit 130 is used collectively as a storage medium such as an MPEG memory, a hard disk (HDD), an EEPROM, a RAM, a ROM, and stores video / audio data, reserved recording information and EPG data registered by a user.

The CPU 140 collectively controls the tuner and demodulator 100, the demultiplexer 110, the decoder 120, and the memory 130, and updates reservation recording and reservation recording information. Generate an event to take full control of the system.

The PVR digital broadcast receiver having the above configuration performs reservation recording of digital broadcast by a user, which is performed by an EPG provided from a broadcasting station.

3 is an embodiment of a table showing reservation recording information when performing reservation recording using a PVR digital broadcast receiver according to the present invention.

Referring to FIG. 3, reservation recording is performed in an EPG for a broadcast program desired by a user.

The reservation recording is possible from now to several days later, and the broadcasting programs registered in this way are sequentially set in chronological order and are stored in the EEPROM.

In addition, information such as a start time and an end time of the reserved and registered broadcast program and a channel on which the program is broadcast are also stored.

Here, when a scheduled recording information update event that is set to occur periodically (for example, 30 minutes, 1 hour, 2 hours, etc.) occurs, the system is turned on, tunes to a reserved program channel, and receives EPG data. It is updated if it is wrong compared to the reserved recording information of the currently stored broadcast program.

4 is a flowchart illustrating a method of performing reservation recording and reservation recording information updating in a PVR digital broadcasting receiver according to the present invention.

First, when a video / audio / data stream is transmitted from a broadcasting station, an EPG is obtained from this data stream showing information about the broadcast program (information on time, plot, recording, etc.).

The user registers a desired recording program by using the EPG, and when the reserved recording is registered, the information is stored in the EEPROM, which is a nonvolatile memory, in the order of the reserved recording time in the PVR digital broadcasting receiver.

In addition, the user sets a period for generating a reserved recording information update event.

For example, the user selects and sets 30 minutes, 1 hour, 2 hours, and the like, and the reservation recording information update event occurs every cycle, such that the system is turned on and the reservation recording information is updated.

Subsequently, even if the system power of the PVR digital broadcast receiver is ON or OFF, the microcomputer of the PVR digital broadcast receiver is in a standby state (the power of the microcom is on) for reserved recording (S200). ).

In operation S210, it is determined whether a reserved recording information update event occurs in the standby state.

In this case, when a scheduled recording information update event occurs, the system is turned on (S211), and the reserved recording information stored in the EEPROM is viewed, and the first recording channel is tuned to the first channel on which the reserved recording program is broadcast. Obtain EPG data (S212).

If the EPG data is different from the current reservation recording information (program start time and end time, program title, etc.), the reservation recording information is updated and stored (S213).

Subsequently, it is determined whether the update of all information about the reserved recording program registered by the user is completed (S214). When the updating of all the reserved recording programs is completed, the system is turned off (S215) and the microcomputer of the PVR digital broadcasting receiver is updated. Becomes the standby state.

For example, the scheduled recording program of sequence number 1 was start time 2002/01/01 10:00 and end time 2002/01/01 10:30, but the start time for the program was 2002 in the newly received EPG data. If the date and time were changed to / 01/03 18:00 and the end time was 2002/01/03 18:30, the reserved recording information of sequence 1 is updated with the changed new date and time and stored in the EEPROM.

Of course, the order of the reserved recording programs is rearranged in chronological order with the changed information.

Such reservation recording information update is performed until the update is completed from sequence number 1 to sequence number N of the registered reserved recording program.

On the other hand, when the microcom of the PVR digital broadcast receiver is not a reserved recording information update event in the standby state, but a scheduled recording start time for a broadcast program that the user wants to record, the scheduled recording event occurs (S220) and the system is powered on ( ON) (S230), the system tunes a channel through which the reserved recording program is transmitted using the information stored in the EEPROM (S240).

Subsequently, the scheduled recording program is recorded on the hard disk (HDD) of the PVR digital broadcasting receiver (S250). When the recording time ends, the recording is ended (S260).

After deleting the information corresponding to the recording program is completed in the EEPROM, it is determined whether there is a next scheduled recording program (S270), and if there is the next reserved recording information, it is registered in the first order and reserved for the registered program. The recording start time is set in the microcomputer (S280).

Then, the power of the system is turned off (S290), and the standby state (the power of the microcomputer is on) is again awaiting an event occurrence.

If there is no next scheduled recording information, shut down the system.

Here, the above operation is repeated until all the reserved recording programs registered by the user are recorded, and then, the process ends.

Although the present invention has been described in detail through specific examples, it is intended to describe the present invention in detail, and the present invention is not limited thereto, and should be understood by those skilled in the art within the technical spirit of the present invention. It is obvious that modifications and improvements are possible.

According to the present invention, when reservation recording is performed using EPG data in a PVR digital broadcasting receiver, reservation recording can be correctly performed even when information of a broadcast program is changed by updating reservation recording information using a reservation recording information update event. The user's convenience and data broadcasting is activated.

In addition, according to the present invention, in order to update EPG data in order to update the reserved recording information, the user sets a cycle and accordingly, the system is turned on to update the reserved recording information, thereby saving power consumption. It is effective.

Claims (8)

A tuner and a demodulator for receiving and demodulating a broadcast stream including EPG data for a selected channel; A demultiplexer unit for separating the broadcast stream into audio / video / data; A decoder to decode the audio / video stream; A memory unit for storing the audio / video stream, reserved recording information, and EPG data; And a central processing unit for controlling the tuner, the demodulator, the demultiplexer, the decoder, and the memory, and generating the reserved recording information update event and the reserved recording event to perform update and scheduled recording. Digital broadcast receiver. The method of claim 1, The reservation recording information is a PVR digital broadcast receiver, characterized in that the program is registered by the user using the EPG data and stored in chronological order. The method of claim 1, The reservation recording information update event is generated by a period set by the user PVR digital broadcast receiver. The method of claim 1, And the reserved recording event occurs at a start time of a scheduled broadcast program. Generating a reservation recording information update or a reservation recording event; Receiving EPG data in a reserved recording program set to update and store the changed information when the reserved recording information updating event occurs; Recording a program when the reserved recording event occurs; and a reservation recording method using a PVR digital broadcasting receiver. The method of claim 5, The reservation recording information update event is a reservation recording method using a PVR digital broadcast receiver, characterized in that is generated every cycle set by the user. The method of claim 5, And a system is powered on when the reserved recording information update event or a reserved recording event occurs. The method of claim 5, The reserved recording information is a PVR digital broadcast receiver, characterized in that the program is scheduled recording set by the user using the EPG data and stored in chronological order.