KR20080057704A - Dvd system having function for changing recording mode and method for changing recording mode during recording thereof - Google Patents

Abstract

A DVD system having a function for changing a recording mode and a method for changing a recording mode during recording are provided to store the time a recording mode is changed in a memory when the recording mode change is asked while recording images in a DVD, in order to record the data of the image from the time, thereby changing the recording mode without data loss. A method for changing a recording mode in a DVD system comprises the steps of: starting recording of requested images in an optical disk(S202,S204); storing a DVD recording mode change time when the recording mode change is requested(S206); receiving the DVD recording mode change information and changing into the recording mode(S208,S210); and re-recording the image through a time shift function in the optical disk from the recording mode change time(S212,S214,S216).

Description

DVD system that can change recording mode and how to change recording mode during recording {DVD SYSTEM HAVING FUNCTION FOR CHANGING RECORDING MODE AND METHOD FOR CHANGING RECORDING MODE DURING RECORDING THEREOF}

1 is a detailed block diagram of a DVD system having a HDD to which an embodiment of the present invention is applied;

2 is a flowchart illustrating an operation of changing a recording mode during DVD recording according to an embodiment of the present invention;

3 is a conceptual diagram of a recording mode change operation according to an embodiment of the present invention.

<Brief description of the major symbols in the drawings>

100: loader 102: pickup

104: RF amplifier 106: DSP unit

108: servo unit 110: memory

112: control unit 114: key input unit

116: HDD recording / playback unit 118: HDD

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DVD recording / playback apparatus, and more particularly, to a DVD system and a recording mode changing method capable of changing a DVD recording mode without loss of recording data in an HDD-DVDR combo system having a hard disk drive (HDD). It is about.

Typically, two or more different devices connected to one integrated system are referred to as a "combination system" or "combo-system", which is abbreviated as "combo". A representative example of such a combo system is a VCR / DVD combo system developed to perform a combination of a digital video disk player (DVDR) and a video cassette recorder (VCR).

Recently, video recording / reproducing devices such as HDD-DVDR with built-in HDD have been developed to record a large amount of video data such as TV, among which HDD-type HDD-DVDR system with built-in HDD is installed in the loader. In addition to the ability to play multiple DVD discs, the DVD-RW can be backed up by using the DVD-RW function for the video data that needs to be backed up from the large-capacity video data stored on the HDD. With RW, the demand is on the rise.

On the other hand, if you want to change the recording mode (HQ / SP / SLP / Dec) selection or make a wrong selection during recording on a DVD, when recording on an HDD-DVDR system with HDDs as described above. There was a hassle of stopping and waiting for DVD recording, changing the recording mode, and recording again. Also, even if the recording was stopped again, there was an inconvenience in that it was impossible to record properly during the middle of the recording.

Therefore, if the HDD / DVDR combo system is implemented to change the recording mode without losing the DVD recording data while recording by using the time shift function, it is expected to greatly increase the convenience of use.

Accordingly, an object of the present invention is to provide a DVD system and a recording mode changing method capable of changing a DVD recording mode without loss of recording data in an HDD-DVDR combo system having a hard disk drive (HDD).

According to an aspect of the present invention, a pickup system for recording a video requested for recording on a mounted DVD disc, a recording mode change request during recording, and a specific recording mode to be changed are provided. A key input unit for receiving a key input for information and applying it to the control unit, and receives a recording mode change key input for the video being recorded on the DVD disc from the key input unit, and stores the time point when the DVD recording mode is changed. A control unit for re-recording the corresponding video on the DVD disc in the recording mode according to the DVD recording mode change information from the time of changing the recording mode, and performing data processing according to the DVD recording mode changed by the control unit The DSP unit to be applied to the DVD disc and recording on the DVD disc under the control of the controller; Storing emitter advance for a set predetermined time interval to is characterized in that it comprises a HDD of providing the time shift function.

In addition, the present invention provides a method for changing the recording mode without loss during recording in the DVD system, (a) starting the recording of the video requested recording on the optical disc mounted in the DVD system loader, and (b) the recording (C) receiving the DVD recording mode change time when the recording mode change request is requested, changing the recording mode to the corresponding recording mode according to the recording mode change request, and (d) And re-recording the corresponding image on the optical disc from the time of changing the recording mode through a time shift function.

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

FIG. 1 is a detailed block diagram of an HDD-DVDR system incorporating an HDD to which an embodiment of the present invention is applied. Hereinafter, referring to FIG. 1, a DVD recording mode may be changed without stopping recording in an HDD-DVDR system. Operation in components for operation will be described in detail.

1, the digital signal processor (DSP) unit 106 adds additional data for an error correction code (ECC) to the encoded data and modulates the data according to a predetermined modulation scheme.

The RF amplifier 104 amplifies the electrical data input from the DSP unit 106 and converts it into an optical signal. The pickup section 102 includes an actuator for focusing and tracking, and records the optical signal converted by the RF amplifier 104 on the disc.

The servo 108 receives the information necessary for servo control from the DSP 106 through the RF amplifier 104 and the controller 112 to perform stable servo. The control unit 112 controls the overall operation of the entire system and transmits data to the disc through the DSP unit 106, the RF amplifier 104, and the pickup unit 102 according to the user's key input through the key input unit 114. Record it.

Next, during reproduction, the pick-up 102 reads out the optical signal from the disk storing the data. The RF amplifier 104 converts an optical signal output from the pickup unit 102 into an electrical signal and extracts a servo signal and modulated data for performing servo.

The DSP unit 106 demodulates the data modulated by the RF amplifier 104, removes additional data while correcting an error by performing ECC, and the pickup unit 102 according to the actuator up / down command of the controller 112. A signal for driving the lens actuator is generated. The servo unit 108 receives information necessary for servo control from the RF amplifier 104 and the controller 112 and performs stable servo.

The HDD recording / reproducing unit 116 converts the video data signal input under the control of the control unit 112 into a hard disk recording format and records the same on the HDD 118, and backs up data to new DVD media in the DVD loader. During playback for back-up, binary data read from HDD 118 is restored to video data and applied to new DVD media in the loader.

The controller 112 controls the overall operation of the entire DVD system and controls the DSP unit 106, the RF amplifier 104, and the pick-up 102 according to a user's key input. Data is recorded on the disc) or data is reproduced from the DVD recording / playback disc 100. In addition, when the recording mode change request is made while recording an image on a DVD disc, the controller 112 stores a time point when the recording mode is changed in the memory and stops recording to the previous recording mode. When the recording is resumed in the changed recording mode, the data of the video is retrieved from the time point stored in the memory 110 from the HDD 118 and recorded on the DVD disc, thereby changing the recording mode without losing the recording data during the DVD disc recording. Control it to be possible.

2 is a flowchart illustrating an operation control for changing a DVD recording mode without stopping recording in a HDD-DVDR system according to an exemplary embodiment of the present invention. Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2.

First, the control unit (micom) 112 of the HDD-DVDR system waits for a user's command through the key input unit 114 when the power is turned on (S200). Accordingly, when there is a broadcast program to be recorded through the key input unit 114, the user may set recording so that recording is performed on a DVD disc inserted in the HDD-DVDR system.

In response to this in step S202, the controller 112 proceeds to step S204 to start recording of the broadcast signal selected by the user.

On the other hand, during recording on the DVD disc by selecting a specific broadcast signal as described above, it may be necessary to change the recording mode of the broadcast signal recorded on the DVD disc as necessary, and the user may request to change the recording mode. do.

As described above, when there is a request for changing the recording mode from the user during the recording on the DVD disc for a specific broadcast signal, the controller 112 displays the menu for changing the recording mode by proceeding from step S206 to step S208. After the user selects a recording mode to change, the user recognizes the recording mode selected by the user.

Subsequently, the controller 112 displays an alarm message confirming again whether or not to perform the change to the recording mode selected in the above step S208 in step S210 and confirms the recording mode change from use.

In this case, when the user changes the recording mode selected in step S208 again, the control unit 112 proceeds to step S212 in response to step S210, as shown in FIG. The data portion at the time T1 of the time when the recording mode is changed among the corresponding broadcast data stored in the time shift area 300 is stored in the memory 110 (118).

Subsequently, the control unit 112 stops the previous operation of the DVD pickup in step S214, prepares to rewrite the DVD pickup for data recording in the selected recording mode, and then proceeds to step S216. As shown in FIG. 3, the data 302 received according to the recording mode change is received from the HDD 118 from the start point of the corresponding broadcast data portion stored in the memory 110 at the recording mode change time point T2. Recording starts in the changed recording mode.

As described above, in the present invention, in the recording mode change method for recording in the HDD-DVDR system having the HDD 118, the recording mode is changed in the memory when a recording mode change request is made while recording the image on the DVD disc. Save the viewpoint, stop recording in the previous recording mode, and when recording is resumed in the changed recording mode, the data of the corresponding image is retrieved from the time point stored in the memory from the HDD 118 and recorded on the DVD disc. When recording a DVD disc, the recording mode can be changed without losing the recorded data.

Meanwhile, the embodiments of the present invention described above have been described in detail, but various modifications can be made without departing from the scope of the present invention. Therefore, the scope of the invention should be determined by the claims rather than by the described embodiments.

As described above, in the present invention, in the method of changing the recording mode during recording in an HDD-DVDR system having an HDD, when a recording mode change request is made while recording an image on a DVD disc, a time point at which the recording mode is changed in the memory is indicated. When the recording is resumed in the changed recording mode after stopping the recording in the previous recording mode, the data of the corresponding image is retrieved from the point of time stored in the memory from the HDD and recorded on the DVD disc. It is possible to change the recording mode without losing the recording data.

Claims (3)

A pickup unit for recording the video requested to be recorded on the mounted DVD disc; A key input unit which receives a request for changing a recording mode and performs key input for specific recording mode information to be applied to the controller during recording; Receiving a recording mode change key input for the video being recorded on the DVD disc from the key input unit, and stores the time point when the DVD recording mode is changed, and changes the DVD recording mode from the time when the recording mode is changed through the time shift function. A control unit for re-recording on the DVD disc in a recording mode according to the information; A DSP unit which performs data processing according to the DVD recording mode changed by the controller and applies the data to the DVD disk; HDD which provides the time shift function by storing data recorded on the DVD disc for a predetermined time period under the control of the controller. DVD system changeable recording mode including. (a) starting recording of a video requested for recording onto an optical disc mounted in a DVD system loader; (b) storing a time point of changing the DVD recording mode when the recording mode change request is made during the recording; (c) receiving the DVD recording mode change information according to the recording mode change request and changing the recording mode; (d) re-recording the video on the optical disc from the time of changing the recording mode through the time shift function; How to change the recording mode in the DVD system including. The method of claim 1, In the step (d), the time shift function, the recording mode changing method in the DVD system, characterized in that implemented through a predetermined area of the HDD provided as a mass storage device in the DVD system.

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