KR20050108621A - Method for providing time information management in digital tv receiver - Google Patents

Abstract

The present invention relates to a method of managing time information of a digital TV receiver, comprising: determining whether a power failure occurs due to a power failure in a state in which reservation recording information for reservation recording of satellite broadcasting is set, and the digital TV receiver; When the power is turned off, the digital TV receiver goes to the standby mode, storing the channel of the final time information, determining whether the digital TV receiver is turned on by recovering the power failure, and turning on the digital TV receiver. And loading the stored channel to obtain time information of the channel. According to the present invention, since time information can be set with reference to a reliable channel of a corresponding region, reliability of power failure compensation during reservation recording of a digital TV receiver can be improved.

Description

METHOD FOR PROVIDING TIME INFORMATION MANAGEMENT IN DIGITAL TV RECEIVER}

The present invention relates to a control technology of a digital TV receiver, and more particularly, to a time information management method of a digital TV receiver that can be set as reliable time information in case of power failure in a reserved recording setting mode using a digital satellite broadcasting receiver.

Recently, due to the rapid development of information media, information has been shifted from the analog transmission to the digital transmission.

At this time, in response to a request to transmit more information within the same time, data is compressed and transmitted according to a data compression rule called 'MPEG'.

Such MPEG compresses and transmits audio visual, that is, audio signals, moving images, and still images at a high compression rate, thereby obtaining multi-channel and high-quality transmission effects in broadcasting, and reducing storage volume and low cost in storage media. It is possible to obtain the effect of recording the multimedia information in the storage media of the media, and in the communication media can be obtained the advantage of being able to perform the multimedia communication at a low price, has recently become a core technology of the multimedia era.

On the other hand, general televisions are standardized to process analog broadcasting signals. As satellite broadcasting and other digital broadcasting methods are spreading, compression and transmission are performed according to MPEG regulations so that users can watch digital broadcasting signals through analog televisions. In order to process the converted digital broadcast signal into an analog broadcast signal, there is provided a separate conversion apparatus called a satellite broadcast receiver, that is, a set-top box.

The satellite broadcasting receiver converts a digital video signal such as a program provider or a service provider, that is, each broadcasting station or cable broadcasting station, such as a cable television and a large number of satellite broadcasts into an analog video signal, so that signal processing is performed on the television. As a device for converting to a possible broadcast method, it is rapidly spreading in recent years thanks to the desire of consumers to watch digital broadcast signals.

Therefore, each broadcasting station or cable broadcasting station converts and provides a program analog signal of a service into a digital signal.

This converted data is compressed by a predetermined compression method to convey a lot of information, and then transmitted to the subscriber side through the communication network.

The subscriber's satellite broadcast receiver selects and watches a corresponding satellite, channel, audio subcarrier, etc. for each time of broadcasting, in order to tune a desired broadcast among a plurality of satellite broadcasts.

However, it is possible to select and watch a desired satellite broadcast through such a satellite broadcast receiver, but when watching a different broadcast in the absence or at the same time, the desired satellite broadcast cannot be viewed when the desired satellite broadcast program is received. Often missed.

In order to solve this drawback, by connecting VCR with general recording function between digital TV and set-top box, scheduled recording of satellite broadcasting program is minimized.

In other words, the multi-functional set-top box equipped with the VCR function is a mixture of the set-top box function such as the reception and decoding of digital broadcast data and the VCR function such as VCR recording and playback. Equipped with a VCR, which had to be provided as a separate device, it has gained great response from the fact that it is possible to save space and increase use efficiency of set-top boxes by various electronic devices in the home.

At this time, in the digital TV receiver equipped with V-CAL, reservation recording can be performed by selecting only a high frequency signal input through terrestrial (Air) or cable television (CATV). Received from satellite and set automatically.

For the program reservation recording function, a technology for recording at a precise reservation time is the key. Generally, a method of approaching a reservation time by recognizing a difference between a current time and a reservation time is used.

When approaching the reservation time by the difference between the current time and the reservation time, set the time to approach the reservation time by up-counting the difference between the current time and the reservation time at the current time, and setting the tea time at the counter. There is a way to approach the reservation time by counting down until the counter output is '0'.

Since these methods are all made using time information, accurate information about time is essential when implementing the reservation recording function as described above. However, if power is not applied to the system due to a power failure, a phenomenon occurs in which time information is lost, and this phenomenon is an obstacle to implementing a reservation recording function.

That is, in the existing digital TV receiver, since time information for each region / country is not stored in the memory, a problem arises that the time information required for reservation recording can no longer be used even if a power failure occurs and is restored.

The present invention has been made to solve the above-described problems of the prior art, and stores the channel information including the time information of the region at the time when the power of the digital TV receiver is turned off, and moves to the corresponding channel when the power failure is restored, the time information The purpose of the present invention is to provide a method for managing time information of a digital TV receiver, which is used for reservation recording.

According to a preferred embodiment of the present invention for achieving the above object, a digital TV receiver having a built-in satellite broadcasting receiver and a VCR to perform a satellite broadcasting reservation recording function, in a state in which reservation recording information for reservation recording of satellite broadcasting is set Determining whether the power of the digital TV receiver is turned off due to a power failure; and, if the power of the digital TV receiver is turned off, moving the digital TV receiver to the standby mode to store a channel of final time information; A method of managing time information of a digital TV receiver comprising determining whether the power of the digital TV receiver is turned on and acquiring time information of the channel by loading a stored channel when the power of the digital TV receiver is turned on.

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

1 is a block diagram of a digital TV receiver to which an embodiment of the present invention is applied, and includes a tuner unit 102, a key input unit 104, a memory unit 106, an MPEG video / audio decoder 108, a video / The audio output unit 110, the set-top box microcomputer 112, the power supply unit 114, the switching unit 116, the VCR unit 118, and the TV receiver 124 are included.

As shown, the tuner 102 receives a satellite broadcast signal propagated through a satellite under predetermined control from the set-top box microcomputer 112 and performs a role of tuning the received satellite broadcast signal to a predetermined channel. .

The key input unit 104 includes a plurality of function keys for controlling the operation of the multi-function set-top box device 100 having a VCR function, and applies key data corresponding to a user's key input action to the set-top box microcomputer 112. Let's do it.

The memory unit 106 includes a ROM storing various control programs for the operation of the multi-function set-top box microcomputer 112, and a RAM for temporarily storing data generated when the control program is executed by the set-top box microcomputer 112. RAM). In this case, the RAM stores channel information including time information of a corresponding region immediately before the digital TV receiver is powered off according to the present embodiment.

The set-top box microcomputer 112 controls the overall operation of the multi-function set-top box device according to the operation program stored in the memory, and includes time information of the corresponding region immediately before the digital TV receiver is turned off according to the embodiment of the present invention. The channel information is temporarily stored in the memory unit 106 and the channel information stored in the memory unit 106 is loaded when the power failure is restored to control the execution of the reserved recording mode of the digital TV receiver with reference to the time information included in the channel information. .

The MPEG Video / Audio Decoder 108 decodes the digital broadcast data stream received from the tuner unit 102 or the network into video / audio data.

The video / audio output unit 110 converts the digital video data processed by the video / audio decoder 108 into an analog signal and transmits it to a TV receiver which is an external device for display. The video / audio decoder 108 The processed digital audio data is converted into an analog signal and output through a speaker (not shown) of the TV receiver 124.

The VCR playback unit 122 in the VCR unit 118 performs VCR playback under the control of the VCR control unit 120. When the VCR playback is not possible due to a problem with the tape or the deck unit mechanism during the VCR playback, the VCR playback unit 122 cannot perform the VCR playback. The VCR controller 120 notifies of an abnormality or an abnormality in the deck part mechanism. The VCR control unit 120 controls the VCR playback unit 122 including the deck unit to control the overall operation of the VCR mechanism system in the multifunctional set-top box device such as VCR playback.

Hereinafter, with reference to the above configuration, with reference to the flowchart of Figure 2 attached to the time information management process of the digital TV receiver according to an embodiment of the present invention will be described in detail.

First, in step S200, reservation recording information for reservation recording of satellite broadcasting is set through the key input unit 106. The reservation recording information setting process is a process in which a user inputs a reservation recording start / end time, a channel, and the like, and may be applied in the same manner as the reservation recording information input process in a normal VCR.

In this state, the reservation recording information is set, the microcomputer 112 determines whether the power of the digital TV receiver is turned off (S202). In other words, it is determined whether a power failure occurs due to external circumstances and the power of the digital TV receiver is forcibly cut off.

As a result of the determination in step S202, if a power failure occurs, the microcomputer 112 proceeds to step S204 to advance the digital TV receiver to the stand-by mode so that the channel of the final time information is stored in the memory unit 106. ). That is, the memory unit 106 stores the channel information including the time information of the region.

At this time, as in step S206, the microcomputer 112 determines whether the power failure is restored, that is, whether the power of the digital TV receiver is turned on.

As a result of the determination in step S206, when the power failure is restored and the power of the digital TV receiver is turned on, the microcomputer 112 proceeds to step S208 to load the channel stored in the memory unit 106 described above, Get time information.

The time information thus obtained is updated in the reservation recording information to implement power failure compensation. That is, since the channel information loaded during the power failure recovery includes the time information of the corresponding region as described above, the reliability of the reservation recording time can be continuously maintained.

As mentioned above, although this invention was demonstrated concretely based on an Example, this invention is not limited to such an Example, Of course, various changes are possible within the range which does not deviate from the summary of a claim mentioned later.

According to the present invention, since time information can be set with reference to a reliable channel of a corresponding region, reliability of power failure compensation during reservation recording of a digital TV receiver can be improved.

1 is a schematic structural block diagram of a digital TV receiver for implementing the method according to the present invention;

2 is a flowchart of a time information management process of a digital TV receiver according to a preferred embodiment of the present invention.

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

102: tuner unit 104: key input unit

106: memory unit 108: MPEG video / audio decoder

110: video / audio output unit 112: set-top box microcomputer

114: power supply unit 116: switching unit

118: VCR unit 124: TV receiver

Claims (3)

Digital TV receiver with built-in satellite broadcasting receiver and VCR to perform satellite broadcasting reservation recording function. Determining whether the digital TV receiver is powered off due to a power failure in the state in which reservation recording information for reservation recording of satellite broadcasting is set; When the digital TV receiver is powered off, operating the digital TV receiver in a standby mode to store a channel of final time information; Determining whether the power failure is restored and the digital TV receiver is turned on; Acquiring time information of the channel by loading the stored channel when the power of the digital TV receiver is turned on Time information management method of the digital TV receiver comprising a. The method of claim 1, The storing of the channel of the last time information may include storing channel information including time information of a corresponding region. The method of claim 1, And the method further comprises updating the acquired time information to the reservation recording information.