KR100261803B1 - Recording rate conversion device of hd-vcr - Google Patents

Abstract

PURPOSE: A device for converting a recording rate of an HD(High Definition) VCR is provided to differentiate the recording rate according to various kinds of tapes such as a normal tape and a super tape, so as to adaptively supplement screen deterioration in a reproducing process. CONSTITUTION: A switch(41) transmits inputted recording data to an interface(42) or an error corrector(43). The error corrector(43) adds an error correction code for error correcting of the recording data. A code adder(44) adds a data code for variable speeds and searching processes to data outputted from the error corrector(43). A formatter(45) receives the output data and formats the data to be appropriate for being recorded. A tape selector(46) controls the switch(41), the error corrector(43), the code adder(44), and the formatter(45). An interleaver(47) receives broadcasting data inputted from the switch(41) through the interface(42) or output data of the formatter(45), and mixes the received data with optional data for preventing a burst error. A modulator(48) converts an output signal of the interleaver(47) into a signal appropriate for being recorded in a tape.

Description

Record rate converter of etch DVD

1 is a general block diagram of a typical etch dive and etch d V seed.

FIG. 2 is a general block diagram of etch DVD.

3 is a block diagram of the conversion rate of the Echid V SD of the present invention.

4 is a data format diagram to which an error correction code of the present invention is added.

* Explanation of symbols for main parts of the drawings

41: switch 42: interface

43: error corrector 44: code addition

45: formatter 46: tape selector

47: interleaved 48: modulator

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a technique for implementing various recording ratios in EHDDV (HD-VCR). In particular, the recording ratio varies according to various types of tapes such as relatively low-cost normal tape and expensive super tape. The present invention relates to an apparatus for converting a recording rate of etched DVD (HD-VCR).

FIG. 1 is a schematic overall block diagram of a typical etch-dive and an etched-divide CD. As shown in FIG. The video decoder 12 to decode, the video display unit 13 to display the video signal output from the video decoder 12, and the output signal of the receiver 11 is supplied to the etch DVR 30 The TV / TV interface 20 transmits a reproduction signal outputted from the etch DVD V30 to the receiver 11.

FIG. 2 is a general block diagram of the etched DVD 30 in FIG. 1, which interfaces with the TV signal and the playback signal between the TV / VCD interface 20 and the etched DVD 30 as shown in FIG. An interface 31, an interleave 32 that mixes broadcast data with arbitrary data to prevent burst errors, and a modulator 33 that converts the output signal of the interleave 32 to be suitable for recording on the tape 34; ), A demodulator 35 for receiving a signal reproduced from the tape 34 to restore the original signal, and an output data of the demodulator 35 for receiving an arbitrary data mixed with the original data for error prevention. It is composed of a deinterleave 36 to separate the data of the output to the interface 31, the operation of the conventional device configured as described above is as follows.

First, when the etchdiive looks at the operation of the system 10, a broadcast signal received through the antenna ANT or a reproduction signal input through the TV / VCal interface 20 is supplied to the receiver 11 from therefrom. The original video signal, digital audio data, and synchronization signal are detected, and the video signal is supplied to the video decoder 12, decoded, and then supplied to the video display unit 13, and the video display unit 13 receives the input video data. It is processed to be suitable for displaying and displayed on the screen.

On the other hand, the etch DVD V 30 is to record the broadcast signal of the receiver 11 through the TV / VP interface 20 or to reproduce the already recorded signal to output the opposite path, that is, the first As shown in FIG. 2, the broadcast data input from the TV / VRC interface 20 through the interface 31 is mixed with arbitrary data through the interleave 32 and supplied to the modulator 33, where recording is performed. The signal is modulated into a suitable signal and recorded on the tape 34, and the signal reproduced from the tape 34 is restored through the demodulator 35, and then supplied to the deinterleave 36 to prevent error. Any data that has been mixed with the original data is then removed and fed back through the interface 31 to the TV / VR interface 20.

However, such a conventional device can not change the recording ratio according to various kinds of tapes such as tapes and super tapes, which are relatively inexpensive in recording signals on the tapes, and thus cannot compensate for screen deterioration adaptively. There was a flaw.

The present invention was devised to adaptively change the recording rate according to the type of tape in order to solve such a conventional defect, which will be described in detail with reference to the accompanying drawings.

3 is a block diagram of an apparatus for converting a recording rate of an Echidi VR of the present invention, as shown therein, a switch 41 for transferring input recording data to an interface 42 or an error corrector 43; An error corrector 43 for adding an error correction code to correct an error of the recording data supplied from the switch 41, and a data code for shifting, searching, etc. to data output from the error corrector 43; A code adder 44 which adds a?, A formatter 45 having a format suitable for receiving and recording the output data of the code adder 44, a switch 41, an error corrector 43, The code adder 44, the tape selector 46 controlling the formatter 45, and the broadcast data input from the switch 41 through the interface 42 or the output data of the formatter 45 are supplied. Prevent burst errors And an interleaver 47 for mixing with arbitrary data and a modulator 48 for converting the output signal of the interleave 47 into a signal suitable for recording on a tape. If described in detail with reference to Figure 4 as follows.

When the tape mounted on the deck system is a low-cost normal tape that is generally used, the switch 41 is short-circuited to one fixed terminal (b) by the switching control signal output from the tape selector 46, and at this time, recording The application data D _R is supplied to the interleave 47 via the switch 41 and the interface 42.

At this time, data of (N + D ₁ ) bps bit rate is output from the interface 42, which is mixed with arbitrary data to prevent burst error in the interleaved 47, and then taped through the modulator 48. "N" represents the recording bit rate of the normal tape, and "D ₁ " represents the dummy bit rate during normal tape recording.

On the other hand, if the tape mounted on the deck system is a super tape, the switch 41 is short-circuited to the other fixed terminal (c) by the switching control signal output from the tape selector 46, and at this time, the recording data D _R is supplied to the error corrector 43 through the switch 41, and the error corrector 43, the code adder 44, and the formatter 45 are driven by the control of the tape selector 46. .

Accordingly, the error corrector 43 adds an error correction code and outputs it to the code adding unit 44, as shown in FIG. 4, in order to correct an error of the input data. A code used for shifting, searching, etc. is added to the input data, and the code is output to the formatter 45. The formatter 45 takes a format suitable for recording the input data and outputs it.

At this time, the data of (N + D ₂ ) bps bit rate is output from the formatter 45, which is recorded on the tape through the interleave 47 and the modulator 48 as in the normal tape mode. ₂ "represents the dummy bit rate in high rate recording such as a super tape.

As described in detail above, the present invention has the effect of easily configuring the device by allowing the recording rate to be adaptively changed according to the type of tape, and has the effect of adaptively compensating for deterioration of the screen during playback. There is.

Claims (1)

A switch 41 for transmitting the input recording data to the interface 42 or the error corrector 43, and an error correction code for correcting errors in the recording data supplied from the switch 41; An error corrector 43, a code adder 44 for adding a data code for shifting, searching, and the like to the data output from the error corrector 43, and the output data of the code adder 44 is supplied. A formatter 45 having a format suitable for recording, the switch 41, an error corrector 43, a code adder 44, a tape selector 46 for controlling the formatter 45, and an interface ( The interleave 47 receives the broadcast data inputted from the switch 41 through the switch 41 or the output data of the formatter 45 and mixes with arbitrary data to prevent burst errors. To record the output signal to tape And a modulator (48) for converting the signal into a suitable signal.