KR100785165B1 - Method for setting reservation data in digital broadcasting system - Google Patents

Abstract

The present invention relates to a method of setting a reservation recording in a digital broadcasting system. When an update event of broadcast reservation information occurs in a system standby state, the system is powered on and generates first broadcast reservation information, and a channel of the first broadcast reservation information is provided. And store the broadcast program of the first broadcast reservation information, detect broadcast reservation information that is expected to collide with the first broadcast reservation information, and record first when the second broadcast reservation information that is expected to collide with the first broadcast reservation information is detected. OSD processing menu screen for inducing the priority setting, and if the priority is set by the user, tune to the channel of the second broadcast reservation information to store the broadcast program of the second broadcast reservation information, the reservation recording time comes to the first If the recording time of the broadcast reservation information and the second broadcast reservation information is in conflict with the first broadcast reservation information and the second broadcast reservation information Characterized in that the change and save the recording time of the broadcast schedule information priority is not set. According to the present invention, even if the recording time does not conflict at the time of the first reservation recording, if there is a possibility of conflict in the updated reservation information thereafter, it is possible to predict in advance so that the user can prioritize the two broadcasting reservation information, By changing the recording time of the low-priority broadcasting reservation information when an actual collision occurs, the reservation recording failure rate in the digital broadcasting system can be significantly reduced and the use satisfaction can be maximized.

Digital Broadcasting System, EPG

Description

Schedule recording setting method in digital broadcasting system {METHOD FOR SETTING RESERVATION DATA IN DIGITAL BROADCASTING SYSTEM}

1 is a schematic block diagram of a digital broadcasting system for performing a reservation recording setting method according to the present invention;

2 and 3 are flowcharts of a reservation recording setting process for preventing recording time out in a digital broadcasting system according to an embodiment of the present invention;

4 and 5 are detailed flowcharts of a process of detecting collision predicted reservation information of FIG. 2;

6 is an exemplary view of a priority setting OSD screen of FIG. 3.

<Explanation of symbols for main parts of the drawings>

100: tuner 102: TP Demux part

104: A / V decoder 106: display unit

108: stream storage DB 110: control unit

112: key input unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reserved recording technique in a digital broadcasting system, and more particularly, to a method of setting a reserved recording in a digital broadcasting system suitable for preventing an actual recording time conflict of a reserved broadcasting program in the same time zone.

Recently, with the development of digital technologies such as digital image compression and digital modulation / demodulation, the standardization and commercialization of digital television broadcasting is rapidly progressing. Also, in the conventional terrestrial, satellite, and cable broadcasting, MPEG (Moving Picture Experts Group) Based on this trend, digitalization is on the rise.

In digital broadcasting, a plurality of broadcast programs encoded on the basis of MPEG are multiplexed and transmitted in the form of a transport stream, which is received by a digital broadcast receiver such as a set-top box (STB) installed on the receiving side. The multiple broadcast programs included in the transport stream are demultiplexed.

Therefore, only one broadcasting program desired by the user can be selected. Also, in a digital broadcasting receiver such as a set-top box, the selected broadcasting program is restored to the original audio and video signal using an MPEG decoder provided in the receiver, The output is sent to the same A / V output device.

In addition, a large-capacity hard disk (HDD) is additionally provided in a digital broadcast receiver such as a set-top box, and a program stored in the hard disk is stored on a hard disk after being transmitted to an A / V output device such as a television. Digital broadcasting systems have been developed and released with the addition of a digital broadcast recording / reproducing function, for example, a 'PVR' function, for reproducing and outputting a broadcast program recorded on a disk, and is widely spread.

In general, a PVR is a personal recording / playback apparatus, and has a large storage medium (for example, a hard disk driver (HDD), etc.) internally for storing recorded data (ie, broadcast program data). Has the function of reproducing the data stored in the storage medium.

In this case, in order to increase the utilization of the storage space, the broadcast program data stored in the storage medium is encoded (compressed) and stored in the MPEG2 method. Therefore, the PVR can record a large amount of broadcast program data on a storage medium.

In addition, the PVR can provide two-way service, which receives and stores program guide (EPG) information through an external network (ie, PSTN, high-speed Internet network, etc.) or communication network connected to the PVR. To provide.

For example, users can search for the desired broadcast program by channel, genre, actor, or time zone through various program guide information, and designate a favorite channel or set a scheduled recording through such a search. The service may be provided, and the service may be provided such that the current viewing channel is automatically switched to a predetermined channel in a predetermined time zone.

That is, the EPG is additional information that enables the viewer to more conveniently use the TV, and the viewer can obtain information about the current broadcast program and the future broadcast program directly on the screen without a newspaper or other guide medium.

In addition, PSIP (Program and System Information Protocol) defines the above-described EPG and SI (System Information) as one. This PSIP is proposed as a standard for the Advanced Television Systems Committee (ATSC) of digital broadcast television.

That is, PSIP is composed of several tables to transmit and receive A / V data made in MPEG-2 video and AC-3 audio format, and to transmit information about channels of each broadcasting station and information about each program of channels. have. The PSIP may support a main function of selecting a channel and providing an A / V service of a desired broadcast and an EPG of a broadcast program, that is, an additional function of providing a broadcast guide service.

At this time, channel information for channel selection and packet identification number (PID) for A / V reception are provided through a virtual channel table (VCT), and EPG information of broadcast programs of each channel is EIT (Event). The information is transmitted through the information table. In addition, PSIP includes System Time Table (STT) for time information, RRT (Rating Region Table) for transmitting information about regions and review institutions for program grades, and Extended Text for ETT (Extended Text). Table) and MGT (Mater Guide Table) for managing the version and PID of each of these tables, and together with these tables, the EPG information is periodically updated through the tuner to provide the viewer with the latest broadcast information. to provide.

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.

Briefly describing such a reservation recording method, when a video / audio / data stream is first transmitted from a broadcasting station, an EPG is obtained from the data stream showing information about a broadcast program (time, plot, recording, etc.). The user registers a desired recording program by using the EPG, and when the reserved recording is registered in this way, this information is reserved by the PVR digital broadcasting receiver in EEPROM (Electrically Erasable Programmable Read Only Memory), which is a nonvolatile memory. Stored in chronological order.

Thereafter, even if the system power of the PVR digital broadcast receiver is turned on or off, the microcomputer of the PVR digital broadcast receiver is in a standby state (powered by the microcomputer) for reserved recording. When the scheduled recording start time for the broadcast program that the user wants to record is reached, the system is powered on, and the system tunes a channel through which the reserved recording program is transmitted using information stored in the EEPROM. Subsequently, the scheduled recording program is recorded on a storage medium of the PVR digital broadcasting receiver, for example, a hard disk drive, and the recording ends when the recording time is over.

After the recording is completed, the EEPROM deletes the information corresponding to the recorded program and then determines whether there is a next scheduled recording program, and if there is the next scheduled recording information, it is registered first, and scheduled recording starts for the registered program. Set the time. The system is then powered off and back to standby. If there is no next reservation information, shut down the system.

Here, the above operation is repeated until the recording of all the reserved recording programs registered by the user is completed.

In the conventional reservation recording technique, a user registers a reservation in advance from hours to days after the EPG, and when the actual broadcast time is changed due to broadcasting stations, the reservation recording information is different from the information registered by the user. This will result in not recording the desired program correctly.

That is, another program in which the reserved recording time is changed at the recording time reserved by the user is frequently recorded, or a problem that is frequently cut off in the middle of recording is caused by the time being pushed backward.

As a part of the prior art for solving such a problem, there has been proposed a technique for updating the time information of the stored reservation list by referring to the changed EPG information periodically or at a time when a specific event occurs. In case of reservation recording of a program of another channel consecutively at the time, the time of the previous program is delayed, which causes a conflict between two reservation lists.

The present invention is to solve the above-described problems of the prior art, it is possible to allow the user to set the recording priority (priority) when two reservation information is expected to collide, and then if the recording time conflict It is an object of the present invention to provide a method of setting a reserved recording in a digital broadcasting system by automatically changing reservation information of a channel having a lower priority, thereby preventing collision of broadcast programs during reserved recording.

According to a preferred embodiment of the present invention for achieving the above object, as a method of setting a reservation recording of a broadcast program in a digital broadcasting system, when the update event of the specific broadcast reservation information of the scheduled reservation information set reservation recording occurs; Tuning the channel of the broadcast reservation information to receive related EPG information, updating the specific broadcast reservation information by using the received EPG information, and collision broadcast reservation that is expected to conflict with the updated specific broadcast reservation information in time. Detecting whether information exists, setting a recording priority of any one of the updated specific broadcast reservation information and the collision broadcast reservation information when the collision broadcast reservation information is detected, and recording Tuning the channel of the collision broadcast reservation information in response to the priority setting Receiving related EPG information, comparing the updated specific broadcast reservation information with related EPG information of the collision broadcast reservation information, and checking whether there is an actual collision; and when the actual collision is detected, the recording priority is increased. A method of setting a reserved recording in a digital broadcasting system comprising changing and storing a recording time of the updated specific broadcast reservation information or the conflict broadcast reservation information that is not set to a time zone other than a collision.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

FIG. 1 is a schematic block diagram of a digital broadcast system for implementing a reservation recording setting method according to the present invention. The tuner 100, the TP demux 102, the A / V decoder 104, and the display unit ( 106, a stream storage DB 108, a control unit 110, and a key input unit 112.

First, the tuner 100 tunes a broadcast signal transmitted through the antenna 10, and the TP demux 102 selects only a broadcast stream with a user's request among the broadcast streams tuned by the tuner 100. Do this.

The A / V decoder 104 converts the broadcast stream selected by the TP demux 102 into a video signal, and the display unit 106 induces the video signal and the user input converted by the A / V decoder 104. Performs a function of displaying various OSD screen information.

The stream storage DB 108 is, for example, a hard disk drive, and selectively stores a broadcast stream corresponding to a predetermined broadcast program among broadcast signals tuned by the tuner 100 under the control of the controller 110 described later. Do this. Since the stream storage DB 108 uses a file-based broadcast recording method, the user can randomly select a desired broadcast program and make a scheduled recording, and thereafter, the stored broadcast program can be repeatedly viewed. have.

The controller 110 performs an overall function of controlling the tuner 100, the display unit 106, etc. in response to the key input signal of the key input unit 112 described later. The controller 110 detects broadcast reservation information in which an update event is generated and broadcast reservation information in which a recording time is collided according to the present embodiment, and enables a user to set a priority among two broadcast reservation information. For example, when the collision occurs, the control time is changed to change the recording time of the broadcast reservation information having the lower priority. The specific control operation of the control unit 110 will be described in more detail in the following flowchart.

The key input unit 112 is a key input unit formed on a main body or a remote controller of the digital broadcasting system. The key input unit 112 generates a key signal corresponding to a user's key button input action and applies it to the controller 110. Through such a key input unit 112, it is possible to set the reservation recording priority according to the present embodiment.

Hereinafter, the reservation recording setting process in the digital broadcasting system according to the preferred embodiment of the present invention will be described in detail with reference to the flowchart of FIG. 2.

First, as in step S200, the controller 110 proceeds to step S202 to determine whether an update event of broadcast reservation information occurs. In this case, the system standby state refers to a state in which only the power of the controller 110 is turned on while the main power of the system is off.

As a result of the determination in step S202, if an update event of the broadcast reservation information occurs, the controller 110 proceeds to step S204 and step S206 to turn on the system power and generate the first broadcast reservation information (N = One).

Thereafter, the controller 110 proceeds to step S208 to control the tuner 100 to tune to a channel of the first broadcast reservation information and to receive EPG information of the corresponding channel together.

In step S210, the controller 110 stores the broadcast program of the first broadcast reservation information, that is, update information, in the stream storage DB 108.

In operation S212, the controller 110 detects broadcast reservation information that is expected to collide with the first broadcast reservation information.

The collision prediction broadcast reservation information detection process is shown in detail in FIGS. 4 and 5. For convenience, it is assumed that "I" described in FIGS. 4 and 5 refers to first broadcast reservation information, "J" to second broadcast reservation information, and "n" refers to a collision detection reference value, respectively.

First, as shown in FIG. 4, in step S400, the controller 110 determines whether the date of the first broadcast reservation information I and the date J of the second broadcast reservation information coincide with each other. In step S402, it is determined whether the channel of the first broadcast reservation information I and the channel of the second broadcast reservation information J match.

When the dates of the first broadcast reservation information I and the second broadcast reservation information J do not coincide or the channels are the same, the two broadcast reservation information I and J are either broadcast reservation information at different time zones or channel information. In this case, the control unit 110 determines that the two broadcast reservation information I and J do not collide with each other (S408).

As a result of the determination in step S402, if the channel of the first broadcast reservation information I and the channel of the second broadcast reservation information J do not coincide, the controller 110 proceeds to step S404 and the first broadcast reservation information. It is determined whether the reservation start time of (I) is less than the value obtained by adding the collision detection reference value n at the reservation end time of the second broadcast reservation information J. FIG. That is, it is determined whether the condition of J (end time) + n> I (start time) is satisfied.

If the reservation start time of the first broadcast reservation information I is less than the value obtained by adding the collision detection reference value n at the reservation end time of the second broadcast reservation information J, the control unit 110 proceeds to step S406. Proceeding from the first broadcast reservation information I and the second broadcast reservation information J, it is determined that a collision is expected.

Similarly, in FIG. 5, the controller 110 determines whether the date of the first broadcast reservation information I and the date J of the second broadcast reservation information coincide (S500). It is determined whether the channel of the first broadcast reservation information I and the channel of the second broadcast reservation information J match.

When the dates of the first broadcast reservation information I and the second broadcast reservation information J do not coincide or the channels are the same, the two broadcast reservation information I and J are either broadcast reservation information at different time zones or channel information. In this case, the control unit 110 determines that the two broadcast reservation information I and J do not collide with each other (S508).

As a result of the determination in step S502, if the channel of the first broadcast reservation information I and the channel of the second broadcast reservation information J do not coincide, the controller 110 proceeds to step S504 and displays the first broadcast reservation information. It is determined whether the reservation end time of (I) is greater than the value obtained by subtracting the collision detection reference value n from the reservation start time of the second broadcast reservation information J. FIG. That is, it is determined whether the condition of I (end time)> J (start time) -n is satisfied.

If the reservation end time of the first broadcast reservation information I is greater than the value obtained by subtracting the collision detection reference value n from the reservation time time of the second broadcast reservation information J, the controller 110 proceeds to step S506. The first broadcast reservation information I and the second broadcast reservation information J are determined to be collided with each other.

On the other hand, back to Figure 2, after performing the collision prediction broadcast reservation information detection process of step S212, the control unit 110 proceeds to step S214 to determine whether there is broadcast prediction information that is expected to conflict.

As a result of the determination in step S214, if there is no broadcast reservation information that is expected to collide, the controller 110 proceeds to step S216 to determine whether the next broadcast reservation information exists.

As a result of the determination in step S216, if the next broadcast reservation information exists, the controller 110 proceeds to step S218 to further generate broadcast reservation information (N = N + 1) to broadcast the additionally generated broadcast reservation information. The program is stored in the stream storage DB 108.

On the other hand, as a result of the determination in step S214, if there is broadcast reservation information that is expected to conflict proceeds to FIG.

In step S220 of FIG. 3, the controller 110 processes the menu screen for inducing the recording priority setting through the display 106. Such an OSD processing screen is as illustrated in FIG. 6.

If the user sets the priority with reference to the OSD processing screen of FIG. 6 (S222), for example, if the user sets the priority for the first broadcast reservation information, the controller 110 proceeds to step S224. The tuner 100 is controlled to tune to the channel of the second broadcast reservation information, thereby storing the broadcast program and the EPG information of the second broadcast reservation information in the stream storage DB 108. In this case, the priority information input by the user may be temporarily stored in an EEPROM (not shown).

Thereafter, when an actual collision occurs as in step S226, that is, when the recording time of the first broadcast reservation information and the second broadcast reservation information collides due to the reservation recording time, the control unit 110 performs step S228. Next, the recording time of the broadcast reservation information, for example, the second broadcast reservation information, of which the priority is not set among the first broadcast reservation information and the second broadcast reservation information is changed (for example, the time is delayed backward) and stored. That is, the two broadcast reservation information does not collide with each other so that reservation recording can be successful.

After this process is performed, the controller 110 feeds back to step S216 to repeat the above process (S230).

As described above, the present invention is implemented so that a program can be recorded as intended by a user by extracting information that may be in conflict from the updated reservation information.

According to the present invention, even if the recording time does not conflict at the time of the first reservation recording, if there is a possibility of conflict in the updated reservation information thereafter, it is possible to predict in advance so that the user can prioritize the two broadcasting reservation information, By changing the recording time of the low-priority broadcasting reservation information when an actual collision occurs, the reservation recording failure rate in the digital broadcasting system can be significantly reduced and the use satisfaction can be maximized.

As mentioned above, although this invention was demonstrated concretely based on the Example, this invention is not limited to such an Example, Of course, various deformation | transformation are possible for it within the technical idea and the scope of a claim mentioned later.

Claims (7)

As a method of setting a scheduled recording of a broadcast program in a digital broadcasting system, Receiving related EPG information by tuning a channel of the specific broadcast reservation information when an update event of specific broadcast reservation information among reserved broadcast reservation information is set, and updating the specific broadcast reservation information by using the received EPG information. Process, Detecting whether there is conflict broadcast reservation information that is expected to conflict with the updated specific broadcast reservation information in time; Setting recording priority of any one of the updated specific broadcast reservation information and the conflict broadcast reservation information when the collision broadcast reservation information is detected; Tuning the channel of the collision broadcast reservation information in response to the recording priority setting to receive related EPG information; Comparing the updated specific broadcast reservation information with related EPG information of the conflict broadcast reservation information and checking whether there is an actual collision; Changing and storing a recording time of the updated specific broadcast reservation information or the collision broadcast reservation information for which the recording priority is not set when the actual collision is detected to a time zone other than the collision; Schedule recording setting method in a digital broadcasting system comprising a. The method of claim 1, Detecting whether there is collision broadcast reservation information for which the collision is expected, Determining whether a channel of the specific broadcast reservation information and a channel of the conflict broadcast reservation information coincide with each other when a date of the specific broadcast reservation information and a date of the conflict broadcast reservation information coincide; If the channel of the specific broadcast reservation information and the channel of the conflict broadcast reservation information do not match, it is determined whether a reservation start time of the specific broadcast reservation information is less than a value obtained by adding a collision detection reference value to a reservation end time of the collision broadcast reservation information. Process, Determining that the specific broadcast reservation information and the collision broadcast reservation information are collided when the reservation start time of the specific broadcast reservation information is less than a value obtained by adding a collision detection reference value at the reservation end time of the collision broadcast reservation information. Schedule recording setting method in a digital broadcasting system comprising a. The method of claim 1, Detecting whether there is collision broadcast reservation information for which the collision is expected, Determining whether a channel of the specific broadcast reservation information and a channel of the conflict broadcast reservation information coincide with each other when a date of the specific broadcast reservation information and a date of the conflict broadcast reservation information coincide; If the channel of the specific broadcast reservation information and the channel of the conflict broadcast reservation information do not match, it is determined whether a reservation end time of the specific broadcast reservation information is greater than a value obtained by subtracting the collision detection reference value from the reservation time time of the conflict broadcast reservation information. Process, Determining that the specific broadcast reservation information and the collision broadcast reservation information are expected to collide if the reservation end time of the specific broadcast reservation information is less than a value obtained by subtracting the collision detection reference value from the reservation start time of the collision broadcast reservation information. Schedule recording setting method in a digital broadcasting system comprising a. delete The method of claim 1, The method, If there is no broadcast reservation information that is expected to collide, determining whether the next broadcast reservation information exists; A process of storing a broadcast program of the additionally generated broadcast reservation information by generating and generating broadcast reservation information if the next broadcast reservation information exists; The reservation recording setting method in the digital broadcasting system further comprising. The method of claim 1, The method, Determining whether the next broadcast reservation information exists after changing and storing a recording time of the broadcast reservation information whose priority is not set among the specific broadcast reservation information and the collision broadcast reservation information; A process of storing a broadcast program of the additionally generated broadcast reservation information by generating and generating broadcast reservation information if the next broadcast reservation information exists; The reservation recording setting method in the digital broadcasting system further comprising. The method according to any one of claims 1 to 6, And the digital broadcasting system is a PVR.

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