KR100304651B1 - Apparatus for setting source coding region adaptively and recording/playback unit using thereof - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal recording / reproducing (or transmitting / receiving) apparatus. In particular, a source coding region for detecting a valid line from which additional information of an image signal starts and actively setting a source coding region of a video using the same The present invention relates to an adaptive setting apparatus and a recording / reproducing (or transmitting / receiving) apparatus using the same.

According to the present invention, the start line position of the valid information of a signal to be coded at the time of recording or transmission is automatically detected, and source coded and recorded in the coding region determined using the same, and the start line position information of the valid information is reproduced or received. By reproducing a signal utilizing the positional information into which the valid information is inserted, coding or recording the valid information without loss regardless of the position where the valid information is loaded, and recording the valid information at the same position where the valid information before recording or transmitting was loaded. It can be inserted.

Description

Apparatus for setting source coding region adaptively and recording / playback unit using kind}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal recording / reproducing (or transmitting / receiving) apparatus. In particular, a source coding region for detecting a valid line from which additional information of an image signal starts and actively setting a source coding region of a video using the same The present invention relates to an adaptive setting apparatus and a recording / reproducing (or transmitting / receiving) apparatus using the same.

In source coding of general video, it is common to input a signal of CCIR REC 601 standard or other normal standard as an input. Thus, the valid line position of the information is fixed by the CCIR REC 601 standard or other transmission standard.

However, in contrast, a video recording system (VSS) or the like is used to input a signal by connecting a plurality of cameras using a single recording / reproducing device. In other words, a large number of sources are input signals. In this case, it is necessary to know which camera the recorded signals are input from. Accordingly, various additional information, including camera information, is added to the vertical blank area in the image blank, but the standard is not set in the content or additional location of such additional information. I'm adding a.

Accordingly, according to the related art, there is a problem in that the additional information is lost or some valid information of the video signal is lost by setting the source coding region and coding the valid line regardless of the position of the additional information added to the video signal. .

The technical problem to be solved by the present invention is an apparatus for adaptively setting a source coding region for automatically determining a coding region by detecting a valid start line from which additional information added to a video signal starts to solve the above problems and using the same. There is provided a recording / reproducing apparatus.

1 is a block diagram of a recording / reproducing apparatus using an adaptive setting apparatus for a source coding region according to the present invention.

2 is a block diagram of a transmitter / receiver using the adaptive setting apparatus of the source coding region according to the present invention.

3 is a block diagram of an apparatus for adaptively setting a source coding region according to the present invention.

4A-4F are waveform diagrams of the major signals of FIG. 3.

In order to achieve the above technical problem, an apparatus for adaptively setting a source coding region according to the present invention is a device for setting a source coding region of an input video signal, comprising: a line memory for delaying and outputting the input video signal by 1H; The amount of motion between the input video signal and the 1H delayed input video signal output from the line memory is reset by a comparator and a vertical sync signal for generating a counting control signal when the threshold value is greater than or equal to a threshold value and counts a horizontal sync signal. The counting value at the time when the counting control signal is applied is output as effective start line information, and the time period from which the counting control signal is applied counts the horizontal synchronization signal and reaches a set value according to a predetermined standard. To generate a coding window pulse corresponding to And a counting block.

According to another aspect of the present invention, there is provided a recording apparatus using an adaptive setting apparatus of a source coding region according to an embodiment of the present invention, wherein a recording apparatus for source coding an input video signal is used to record additional information included in the input video signal. A dynamic line detection unit for generating a coding window pulse indicating a coding range according to a specification by counting the detected valid start line information and the valid start line to a starting point, and a source encoder for executing coding only during the coding window pulse generation period. A system data generator for generating system data including the valid start line information, a multiplexer for inputting the data outputted from the source encoder and the system data, and outputting the multiplexed data by time multiplexing the data outputted from the multiplexerA formatter for converting the data into a standard required by the stem, a channel modulator for converting the recording data sequence to be suitable for the digital recording / reproducing system, and an amplifier for amplifying the recording current to the level required by the recording system. It features.

In order to achieve the above object, a reproducing apparatus using an adaptive setting apparatus of a source coding region according to the present invention is a reproducing apparatus for reproducing an image signal recorded on a recording medium, and the signal reproduced from the recording medium is reproduced. A data detector for converting the digital data into a digital data, a DEMUX & channel demodulator for separating the digital data outputted from the data detector according to the characteristics of the data, and performing demodulation corresponding to the executed channel modulation, in the DEMUX & channel demodulator A source data decoder for inputting the separated image data and performing decoding, and a system data decoder for decoding the system data including the position information of the start line in which the valid information output from the DEMUX & channel demodulator is present. And a decode of the system data decoder. After using the data coding determining the starting position of the effective information it is characterized in that it comprises a composite video signal encoder for restoring output data of the source decoder with the composite video signal.

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

As shown in FIG. 3, the apparatus for adaptively setting the source coding region according to the present invention includes a line memory 301, a comparator 302, and a counting block 303.

The line memory 301 inputs a video signal to be recorded or transmitted, and outputs it after 1H delay.

The comparator 302 inputs the video signal to be recorded or transmitted (FIG. 4B) and the 1H delayed output signal (FIG. 4C) of the line memory, and is effective when the level difference or the movement amount of the two input signals is compared and is greater than or equal to the threshold value. Generate a valid start line detection signal for which information exists. That is, as shown in Figs. 4A and 4B, by comparing the video signal input without delay and the 1H delayed video signal, the corresponding horizontal line of the 1H delayed video signal has no valid information and the corresponding horizontal line of the video signal input without delay. An effective start line detection signal (Fig. 4D) is generated in the horizontal line section in which valid information is detected only in the line.

In the counting block 303, it is reset by the vertical synchronizing signal (Fig. 4A), and the first counting (Fig. 4E) is executed using the horizontal synchronizing signal as the counting input signal. When the valid start line detection signal is applied from the comparator 302, the first counting is terminated, and the first counting value is read and output to the system data generating units 103 and 203. Here, the first counting value means a value of the horizontal line where the valid information starts. Then, from the time when the first counting value is output, the horizontal counting signal is second counted so that the second counting value corresponds to a value corresponding to a predetermined standard (for example, 480 for NTSC and 1080 for HD according to the MPEG standard). A coding window pulse (FIG. 4F) to the reached section is generated and output to the source encoders 101 and 201. The counting block 303 may be composed of two counters for the first counting and the second counting, or may be implemented by a method of counting one counter by time division.

By the above operation, the position of the horizontal line of the vertical blank at which the valid information starts to be loaded may be determined by the first counting value, and the execution region of the source coding may be determined by the coding window pulse by the second counting value. It became possible.

Next, the recording / reproducing apparatus using the adaptive setting apparatus of the source coding region according to the configuration of FIG. 3 will be described in detail.

As shown in FIG. 1, the recording / reproducing apparatus using the adaptive setting apparatus of the source coding region according to the present invention includes a source encoder 101, a line-to-line dynamic detector 102, a system data generator 103, and a MUX. & Formatter 104, channel modulator 105, record amplifier 106, record / play block 107, play amplifier & data detector 108, DEMUX & channel demodulator 109, source decoder 110 The system data decoder 111 and the composite video signal encoder 112 are provided.

As described in detail with reference to FIG. 3, the source encoder 101 codes a write input signal input during a section in which a coding window pulse input from the interline dynamic detector 102 is generated. That is, the source encoder 101 codes only signals of a section corresponding to the number of valid lines (480 lines in the case of NTSC and 1080 lines in the case of HD) determined by the standard from the horizontal line where the valid information starts to exist.

The system data generation unit 103 is a block for generating various system data necessary for the recording / reproducing apparatus. In the present invention, the position of the first horizontal line in which the valid information applied from the inter-line dynamic detection unit 102 exists in these system data. Print out additional system data.

The MUX & Formatter 104 converts the recording data input from the source encoder and the system data input from the system data generation unit 103 into a data format required by the recording / reproducing apparatus by time multiplexing.

The channel modulator 105 converts and outputs a signal in a modulation manner so that it can be best recorded corresponding to the characteristics of the recording / reproducing apparatus.

The recording amplifier 106 amplifies the recording current so as to reach the level required by the recording channel.

Then, the recording / reproducing block 107 magnetizes the recording medium by the recording current of the head in the recording mode, and generates a current corresponding to the magnetic field of the recording medium in the reproducing mode.

The reproduction amplifier & data detector 108 amplifies the reproduction signal detected from the head to an appropriate level for signal processing, and converts the analog data into digital data.

The DEMUX & channel demodulator 109 inputs the reproduced digital data, separates them according to the contents or characteristics of the data, and performs demodulation corresponding to the channel modulation performed by the recorder.

The source decoder 110 decodes the separated video data and restores the same video signal as the video signal before recording.

The system data decoder 111 decodes the input system data separated from the DEMUX & channel demodulator 109 and controls neighboring blocks so that each system can operate correctly. The positional information of the effective start line is decoded and output to the composite video signal encoder 112.

The composite video signal encoder 112 inputs the decoded data of the source decoder 110 to generate a composite video signal such as NTSC, PAL, or SECAM, and to the effective start line position information applied from the system data decoder 111. Therefore, the position of the horizontal line to insert the valid information is determined.

By the above operation, the position information of the horizontal line in which the valid information of the video input signal exists is detected at the time of recording, and the coded section is recorded with the valid information accurately recorded using this, and the video input signal before recording is reproduced at the time of reproduction. The valid information can be reproduced from the same horizontal line position where the valid information existed.

Next, FIG. 2 is a transmission / reception apparatus using an adaptive setting apparatus of a source coding region according to the present invention, and includes a source encoder 201, a line-to-line dynamic detector 202, a system data generator 203, a MUX & formatter. 204, channel modulator 205, amplifier & transmitter 206, transmission channel 207, receive amplifier & data detector 208, DEMUX & channel demodulator 209, source decoder 210, system data The decoder 211 and the composite video signal encoder 212 are provided.

The transmission / reception apparatus using the adaptive setting apparatus of the source coding region according to the present invention is very similar to the configuration and operation of the recording / reproducing apparatus using the adaptive setting apparatus of the source coding region shown in FIG. Unlike the playback device, only the difference in the operation according to the characteristics of the system which codes and modulates the signal at the time of transmission in accordance with the characteristics of the transmission / reception channel of the signal, and the reception amplification, channel demodulation and source decoding at the time of reception Occurs.

Therefore, the detailed description of the operation according to the block configuration will be omitted.

By the above operation, for example, in case of connecting a plurality of cameras using one recording / reproducing apparatus as input signal and using a plurality of sources as input signals, various additional information including camera information is arbitrarily selected. In addition to the horizontal line of the vertical blank (BLANK) of the position of and when coding it, it is possible to automatically detect the effective horizontal line from which the additional information starts, and to actively set the coding start line. In addition, the positional information of the start line can be recorded or transmitted, and the positional information can be utilized as the positional information for inserting valid information during reproduction or reception.

As described above, according to the present invention, the start line position of the valid information of the signal to be coded at the time of recording or transmission is automatically detected, and source coded and recorded in the coding region determined using the same, and the start line position information of the valid information is recorded. By reproducing a signal by utilizing the positional information in which the valid information is inserted at the time of reproduction or reception, the effective information is coded and recorded or transmitted without loss, regardless of the position where the valid information is loaded, and the same information that the valid information before recording or transmission was loaded. There is an effect that can insert valid information in the position.

Claims (3)

An apparatus for setting a source coding region of an input video signal, the apparatus comprising: A line memory for outputting the input video signal by delaying 1H; A comparator for generating a counting control signal when the amount of movement between the input video signal and the 1H delayed input video signal output from the line memory is greater than or equal to a threshold value; And The counting value at the time when the counting control signal is applied is output as valid start line information, reset by the vertical synchronizing signal, and the horizontal synchronizing signal as a counting input signal, and the horizontal synchronization is performed from the time when the counting control signal is applied. And a counting block for counting a signal to generate a coding window pulse corresponding to a section reaching a set value according to a predetermined standard. A recording apparatus for source-coding an input video signal, the recording apparatus comprising: An inter-line dynamic detection unit for generating a coding window pulse indicating a coding range according to a standard by counting valid start line information for detecting additional information included in the input video signal and the valid start line to a viewpoint; A source encoder for executing coding only during the coding window pulse generation period; A system data generator for generating system data including the valid start line information; A multiplexer for inputting data output from the source encoder and the system data, and outputting the data by multiplexing the time; A formatter for converting data output from the multiplexer into data of a standard required by the system; A channel modulator for converting a recording data sequence suitable for a digital recording / reproducing system; And And an amplifier for amplifying the recording current to a level required by the recording system. A reproducing apparatus for reproducing a video signal recorded on a recording medium, A data detector for converting a signal reproduced from the recording medium into digital data; A DEMUX & channel demodulator for separating digital data output from the data detector according to characteristics of data and performing demodulation corresponding to channel modulation; A source decoder configured to perform decoding by inputting image data separated and output from the DEMUX & channel demodulator; A system data decoder for decoding system data including position information of a start line in which valid information separated and output from the DEMUX & channel demodulator is present; And And a composite video signal encoder for reconstructing the output data of the source decoder into a composite video signal after determining a start position of valid information by using the decoding data of the system data decoder. Playback device using the device.