KR970008382B1 - Stereoscopic converting device for two dimensional video signal - Google Patents

Abstract

No summary.

Description

Device for converting general video signal (2D) into stereoscopic video signal (3D)

1 is an explanatory diagram of a conventional stereoscopic image (3D) implementation method,

2 is a concrete circuit diagram of the image synthesizer of FIG.

3 is an explanatory diagram illustrating the principle of image synthesis of the image synthesizer of FIG.

4 is a detailed circuit diagram of the shutter drive circuit of FIG.

5 and 6 are views of a conventional stereoscopic image (3D) viewing system,

7 is an explanatory view of the principle of the present invention,

8 is a block diagram of an apparatus for implementing a stereoscopic image (3D) according to the present invention;

9 is a detailed circuit diagram of the present invention;

FIG. 10 is a signal waveform diagram of each part of FIG. 9. FIG.

* Explanation of symbols for main parts of the drawings

1,2: left and right camera 3: video synthesizer

4 synchronization signal generating circuit 5 shutter driving circuit

6: TV receiver 7: Glasses for viewing stereoscopic images

8: Subject 9: Left frame memory

10: right frame memory 11: read control circuit

12 timing control circuit 13 mixed circuit

14, 15: left and right camera signal input terminal 16: synchronization signal input terminal

17: synchronous separation circuit 18: feed identification circuit

19 modulation circuit 20 oscillation circuit

21: driving circuit 22, 23: left, right LCD shutter

24: antenna 25: recording device

26: VCR50: primary image

51: secondary image 52: general synchronous signal

53: stereo sync signal A: stereo image signal processing unit

B: stereoscopic image viewer 100: video signal input terminal

101: input circuit unit 102: synchronous separation circuit

103: 2-feed separation circuit 104: gate circuit

105: oscillation circuit 106: buffer portion

107: LCD glasses 108: TV receiver

109: horizontal synchronous generating circuit 110: vertical synchronous generating circuit

111: horizontal synchronous switch circuit 112: 1-feed video switch circuit

113: 2 feed image switch circuit 114: vertical synchronous switch circuit

115: mixer 116: stereoscopic image signal output stage

U1: Amplifier U2: Synchronous Separator

U3: flip-flop U4: OR gate

TB: Trigger buffer circuit Cv: Variable capacitor

Rv: variable resistor.

The present invention relates to an apparatus for implementing a stereoscopic image (3D). In particular, the present invention relates to an apparatus for receiving a general video signal (2D) (TV signal, VCR signal, etc.) and processing it into a stereoscopic image (3D).

The conventional stereoscopic image (3D) implementation method was to implement a stereoscopic image by combining the respective video signals by special shooting with a plurality of cameras from the beginning.

The conventional stereoscopic image implementation method is a situation that the production and dissemination of a stereoscopic image program is hampered by many defects described below. The defect is as follows.

First, the production cost of 3D image programs is excessive.

1) About 3 ~ 7 times of general video (2D) production,

2) The cost of special equipment for producing 3D images is expensive.

3) High wages due to lack of special shooting specialists,

4) The production cost is additionally increased because special effects (superimpose, etc.) are required for each shot cut.

Second, the production period is long.

In other words, the three-dimensional image (3D) program is required to operate the image for each field through the superimpose technology, so the production period is quite long.

Third, the program lacks freshness,

Due to the long production period, the film can be released one or two years after shooting with a general video signal, thus lacking the freshness of the work.

Third, the low level of the contents and effects of the program,

1) Since the three-dimensional image program mainly aims at three-dimensional image rather than the content, the content of the program is generally produced in a low level due to the special effects.

2) Slow pictures are inserted for special effects (superimpers, etc.), and the original contents cannot be saved.

Conventional stereoscopic images have been poorly produced due to the above defects, and the development of manufacturing techniques has been insignificant.

The object of the present invention, in view of the combination of the prior art as described above, can be viewed by converting the general video signal (2D) to a three-dimensional image (3D) through a signal processing without a separate shooting and production process for implementing a three-dimensional image It is to provide a device to make.

Hereinafter, the configuration and effects of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a TV for allowing a viewer to watch a signal 3D synthesized as a stereoscopic image by receiving video signals output from two left and right cameras 1 and 2 and each of the cameras 1 and 2 above. Shutter driving circuit 5 for receiving a signal from the handset 6 and the cameras 1 and 2 and the image synthesizer 3 to drive the liquid crystal (LCD) plate of the glasses 7 for stereoscopic image viewing. It consists of a synchronization signal generating circuit (4) for inputting a synchronization signal required for.

FIG. 2 is a detailed circuit diagram of the image synthesizer 3, which is a main part of FIG.

Each part receives the left and right frame memories 9 and 10 storing the video signals input from the left and right cameras 1 and 2 and the registered signals generated from the synchronization signal generating circuit 4. A read control circuit 11 for receiving a timing control circuit for controlling a signal and outputting a control signal for reading a stored video signal from the left and right frame memories; and a read agent for the control signal of the read control circuit. And a mixing circuit 13 for synthesizing the left and right video signals outputted accordingly.

FIG. 3 is an explanatory diagram showing output characteristics of respective portions of FIG.

Referring to FIG. 2 and FIG. 3, a description will be given of an image synthesis technique during a conventional stereoscopic image production process.

The left image signal a output from the left camera 1 and the right image signal b output from the right camera 2 are stored in the left and right frame memories 9 and 10, respectively. . The timing control circuit 12 which receives the clock of the synchronization signal d and outputs a control signal to the read control circuit is timingd to the left and right frame memories 9 and 10 and the mixed signal 13. Output the signal. The read control circuit 11 receiving the timing signal controls the left and right frame memories 9 and 10 to output the video signal f delayed by one frame. The delayed video signal output from the left and right frame memories 9 and 10 is mixed in the mixing circuit 13 to output a synthesized video signal as shown in FIG. It is a principle to say.

4 is a block diagram of a shutter drive circuit 5 for driving a liquid crystal shutter of glasses suitable for viewing the stereoscopic image signal when the stereoscopic image signal is displayed by a TV receiver or the like.

The signal is input from the synchronization signal separation circuit 17 and the synchronization signal separation circuit 17 which receives the synchronization signal from the synchronization signal generation circuit 4 and separates the synchronization signal into vertical and horizontal synchronization signals. The left and right LCD shutters 22 and 23 are inputted from the signal of the field identification circuit 18 for identifying the right-sided right and the signal from the oscillation circuit 19 which generates and outputs the 30HZ oscillation signal. It is driven by the drive circuit 21 which outputs the signal to drive.

5 and 6 illustrate a production and viewing state of a stereoscopic image according to the prior art.

5 is an example in which a video signal photographed with a left and right camera is produced as a stereoscopic image by a projection synthesizer, and then received by a general TV and viewed with glasses for viewing stereoscopic images.

FIG. 6 is a video synthesizer photographed with left and right cameras to produce a stereoscopic image, which is reproduced by a general VCR 26 using a recording device 25 on an image tape or the like, and outputs to a TV screen. It is an example to watch.

FIG. 7 is a diagram for explaining the principle of stereoscopic image implementation of the present invention, which is fundamentally different from the conventional stereoscopic image implementation method described above.

Attachment number 50 is captured at the left visual angle as the primary image, and 51 is captured at the right visual angle as the secondary image to cause a phenomenon that the difference between left and right vision is felt. It is a stereoscopic image implementation method using afterimage effect and visual difference.

Also, as shown in A, B, and C, the difference between the left and right views increases and decreases depending on the distance.

In order to realize a stereoscopic image having the above-described principle, the present invention generates a new synchronization signal 53 by separating the synchronization signal 52 of the general video signal 2D, and then performs interlaced scanning on the TV signal by one feed and two blood. The present invention provides a method of realizing a stereoscopic image by superimposing the synchronizing signals by decomposing and recomposing them into fields.

8 is one embodiment most suitable for realizing the stereoscopic image implementation method of the present invention. When the general video signal 2D is input through the input terminal 100, the synchronous separation circuit 102 and the synchronous separation that separate the signal amplified by the amplification circuit unit 101 into vertical, horizontal and composite synchronization signals. 2 feed separator 103 connected to the circuit 102, the horizontal synchronous generating circuit 109 and the vertical synchronous generating circuit 110, and the horizontal synchronous switch unit 111 connected to the horizontal synchronous generating circuit 109 ), The resin synchronous switch unit 114 coupled with the vertical synchronous generating circuit 110, the one-feed image switch unit 112 coupled with the two-feed separator 103, and the horizontal The synchronous switch unit 111 is coupled, and the two-feed image switch unit 113 and the vertical synchronous switch unit 114 are coupled, and the output of the one-feed image switch unit 112 and two. Mixer 115 for mixing the output of the image switch unit 113 for output to output a composite video signal to the output terminal 116 A three-dimensional image signal processing unit (A) consisting of: a gate signal (104) which receives the input signals from the two-feed separators of the feed signals and logically operates these signals and outputs them to the buffer unit (106); The unit 106 is characterized by consisting of a stereoscopic image viewer (B) consisting of an LCD shutter glasses 107 for viewing stereoscopic images to receive the left and right shutter signals, respectively. In the drawing, reference numeral 108 denotes a TV receiver 108 that is combined with the output terminal to display a stereoscopic image signal.

9 is a detailed circuit diagram of FIG. The same parts as in FIG. 8 will be described in detail with reference to the configuration of the specific circuit diagram of the present invention using the same reference numerals.

Resistor R1, R2, R3, R4, R5, R6, R7, R8 and the input terminal 100 to which the general video signal 2D is input and the synchronous separation circuit to increase the gain of the signal stably. It consists of condensers C1, C2, C3, C4, C5 and amplifier U1, and can select the general video signal 2D and the stereoscopic image 3D between the capacitor C1 and the resistor R2. The input circuit unit 101 having the switch SW formed thereon and the GAIN-UP signal received from the input circuit unit 101 receive the synchronous signal in the vertical synchronization (V-Sync) and the composite synchronization (C-). The resistor R9 and the capacitor C6 are connected to the synchronous separator U2 in parallel so as to be separated by the Cync) and the feed separated signal, and the other end thereof is earthed to achieve stabilization of the circuit. Resistor (R18, R19), capacitor (C10), variable resistor (Rv), gate (G1, G2, and so on) to receive the vertical synchronization signal (V-Sync) separated by the synchronous separation circuit (102). G3, G4) in series The trigger buffer circuit TB and the variable capacitor to generate and amplify the horizontal synchronous signal by receiving the configured vertical synchronous generating circuit 110 and the composite synchronous signal C-Cync output from the synchronous separation circuit 102. Cv) is connected to the horizontal synchronization generating circuit 109 connected in series and the vertical synchronization signal (V-Sync) and the feed separation signal from the synchronous separation circuit 102 through the buffer (U5B), ODD / EVEN) Q, Q Outputs the 2-feed separator 103, the Q signal of the 2-feed separator 103 and the synchronization signal of the horizontal synchronization generating circuit 109, and receives the 1-feed image switch 112. Q of the horizontal synchronous switch 111 to control and the two-feed separator 103 Signal and the synchronization signal of the vertical synchronization generating circuit 110, the vertical synchronous switch unit 114 for controlling the two-feed image switch 113 and the first and second feed image switches 112 and 113. A stereoscopic image signal processing unit (A) consisting of a mixer 115 for mixing the respective signals output from the output to the output stage 116 is formed, Q, Q in the two-feed separator 103 3D image viewing composed of a logic circuit 104 configured to OR on and off the buffer circuit U5A to turn the left and right sides of the LCD shutter glasses for viewing 3D images by receiving the frequency oscillation signal from the signal and the oscillating circuit 105. Base B is formed.

FIG. 10 is a waveform diagram of each part of FIG.

The operation of the present invention will be described with reference to the specific circuit diagram (Fig. 9) of the present invention and the waveform diagram (Fig. 10) of each part.

A general video signal 2D, such as FIG. 10 a (a waveform of a composite video signal) input to the input terminal 100, has a gain so that the system can be stabilized by the amplifier circuit of the input circuit unit 101. GAIN-UP is used to output the waveform as b degree.

The signal of FIG. 10B in which the above-described gain is adjusted is input to the synchronous separation circuit 102, and a vertical synchronous circuit such as C (V-SYNC) such as C, and a complex synchronous signal such as d C-SYNC) and field separation signals (ODD / EVEN) such as e are output.

The complex synchronous signal C-SYNC is a mixed signal form in which the vertical synchronous signal V-SYNC and the horizontal synchronous signal H-SYNC are alternately alternated.

The two-feed separator 103 that receives the vertical synchronizing signal V-SYNC outputted from the synchronizing separation circuit 102 inputs the input signal using the flip-flop U3A as shown in FIGS. Q, Q Separate output with the shield signal.

The composite synchronizing signal C-SYNC output from the synchronizing separation circuit 102 is converted into a horizontal synchronizing signal delayed and amplified by the horizontal synchronizing generation circuit 109 composed of a trigger buffer circuit TB. The waveform is output as 10 degrees K.

In addition, the vertical synchronizing signal V-SYNC output from the synchronizing separation circuit 102 is a vertical synchronizing generation circuit in which the resistors R18 and R19, the variable resistor Rv, the condenser C10 and the gate circuit are arranged in parallel. The vertical synchronization signal V-SYNC is delayed as shown in FIG.

The horizontal synchronous signal delayed to the one-field video switch unit 112 and Q described above. Output to the vertical synchronous switch section 114 which has the same function as the horizontal synchronous switch 111 for inputting the signal processed by the feed signal, and the Q and Q After receiving the separated signal and the original video signal (a) and outputting a signal having a mutual phase difference, these signals are synthesized by the mixer 115, and the video signal subjected to stereoscopic image processing to the output terminal 116 is taken to the TV. The stereoscopic image signal processing unit A is configured to be output to the device.

The stereoscopic image viewer (B) is Q, Q output from the two-feed separator (103) The feed signal f, g is amplified through the OR gate and input to one side of the buffer unit 106, and the oscillation signal output from the oscillation circuit 105 by the CMOS is flipped to the clock signal as shown in FIG. The clock signal of the flip-flop is input to the flop U3B and is input to the other side of the buffer U5A.

The buffers output signals of FIGS. 10 and i and j to the liquid crystal shutters, respectively, to drive the shutter of the liquid crystal glasses for stereoscopic image viewing.

Hereinafter, the effects of the present invention will be described in detail.

The stereoscopic image is obtained by separating the synchronization from this signal by inputting the general video signal (2D), separating the video signal into the odd and even fields by delaying and amplifying each of the synchronization signals, and delaying and synthesizing the separated fields. By implementing the signal (3D), there is an effect that can cope with the expensive stereoscopic image program produced by using a special equipment for a specific use (for stereoscopic image). That is, the present invention is a novel and advanced invention that can realize the stereoscopic image (3D) of the general image signal (2D).

Claims (1)

An apparatus for implementing a 3D image (3D) processing a video signal to feel the depth and perspective of each object on the screen, the input terminal 100 to which the general video signal (2D) is input, and to stabilize the input video signal The input circuit unit 101 for adjusting the gain of the hazard signal (GAIN-UP), and the vertical synchronizing signal (V-SYNC) and the composite synchronizing signal (C-SYN) by receiving the image signal whose gain is adjusted by the input circuit unit (101). -Synchronous separation circuit 102 for separating and outputting SYNC and field separation signal (ODD / EVEN), and inputting vertical synchronization signal and field separation signal (ODD / EVEN) output from the synchronization separation circuit 102. Receive input signal Q, Q A two-feed separating circuit 103 for separating into a shield, a vertical synchronizing generating circuit 110 for receiving a vertical synchronizing signal from the synchronizing separating circuit 102 and outputting a delayed vertical synchronizing signal, and the synchronizing separation. A horizontal synchronous generating circuit 109 that receives the composite synchronous signal output from the circuit 102 and generates a delayed horizontal synchronous signal H-SYNC, a vertical synchronous signal output from the vertical synchronous generating circuit 110 and the A vertical synchronous switch 114 for receiving a feed separation signal Q output from the two-feed separating circuit 103 of the second-feed separating circuit 103 and outputting a control signal to the two-feed image switching circuit 113; The horizontal horizontal synchronization signal output from the generation circuit 109 and the separation signal Q output from the two-feed separation circuit 103 described above. ) And the horizontal synchronous switch circuit 111 for outputting a control signal to the one-feed image switch circuit 112, and the general video signal 2D from the input terminal 100, and the horizontal and vertical The control signal inputted from the synchronous switch circuits 111 and 114 is the above-mentioned feed separation signal Q and Q. 1 and 2 feed image switch circuits 112 and 113 for outputting a synchronous signal and a general video signal delayed by?), And an output and 2 feed switch of the 1 feed image switch circuit 112. A stereoscopic image signal processor (A) including a mixer 115 for synthesizing the output of the circuit 113, an output stage 116 for outputting the mixed stereoscopic image signal to a TV receiver 108, and the like. Feed separation signals Q and Q of the two-feed separation circuit 103 ) And the gate circuit unit 104 for outputting the output signal of the flip-flop U3B driven by the CMOS oscillator to the buffer circuit unit 106, and by receiving the on / off signals from the buffer unit 106 as described above. The stereoscopic image signal is composed of a stereoscopic image viewer (B) consisting of a liquid crystal shutter glasses 107 for viewing stereoscopic image signals displayed by the TV receiver 108 and the like. Device to convert (3D).