WO1996033577A1 - Procede et circuit de synchronisation de phase d'un signal video, et dispositif combine - Google Patents
Procede et circuit de synchronisation de phase d'un signal video, et dispositif combine Download PDFInfo
- Publication number
- WO1996033577A1 WO1996033577A1 PCT/JP1996/001071 JP9601071W WO9633577A1 WO 1996033577 A1 WO1996033577 A1 WO 1996033577A1 JP 9601071 W JP9601071 W JP 9601071W WO 9633577 A1 WO9633577 A1 WO 9633577A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- color
- video signal
- phase
- circuit
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/74—Circuits for processing colour signals for obtaining special effects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/44—Colour synchronisation
- H04N9/475—Colour synchronisation for mutually locking different synchronisation sources
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/74—Circuits for processing colour signals for obtaining special effects
- H04N9/76—Circuits for processing colour signals for obtaining special effects for mixing of colour signals
Definitions
- the present invention relates to a method, a circuit, and a synthesizing device of a phase synchronization of a video signal suitable for, for example, synthesizing a video signal.
- the present invention relates to a method, a circuit, and a synthesizing device for a phase synchronization of a video signal used when synthesizing an image represented by a digital video signal and an image represented by an analog video signal.
- the first and second video signals are synchronized at the level of the synchronization signal, no consideration is given to the phase synchronization of the chrominance subcarrier signal having a higher frequency, and therefore, this configuration is not adopted.
- the color signals cannot be combined.
- the composition can be performed only when the first video signal is only the luminance signal (black and white signal).
- an RGB signal is decoded from each of the first and second composite video signals and stored in the first and second frame memories in accordance with the respective synchronization signals.
- these frame memories are read out in synchronization with one of the video signals, and the read first and second video signals are combined in an RGB signal state.
- the video signal is encoded.
- the circuits between the A / D converters 61c and 62c and the D / A converter 72 each require three RGB systems, and the circuit configuration is extremely enormous. It becomes something.
- the present application has been made in view of the above points, and has a simple configuration and is capable of combining an image represented by a digital video signal with an image represented by an analog video signal.
- Signal phase synchronization It is intended to provide a method, a circuit and a synthesizer. Disclosure of the invention
- the present invention generates a continuous wave signal synchronized with the first color subcarrier signal from an analog video signal containing the first color subcarrier signal, and converts the digital video signal containing the color signal components into a carrier color signal.
- the chrominance signal component is converted to the carrier chrominance signal using the continuous wave signal, and the phase of the first color subcarrier signal and the A phase synchronization method, a circuit, and a synthesizing device for a video signal are disclosed in which the phases of the two color subcarriers are synchronized.
- FIG. 1 is a block diagram showing a configuration of a first embodiment of a video signal synthesizing apparatus according to the present invention.
- FIG. 2 is a block diagram showing a configuration example of a digital video signal conversion circuit.
- FIG. 3 is a block diagram showing the configuration of a second embodiment of a video signal synthesizing device according to the present invention.
- FIG. 4 is a block diagram showing a configuration of a third embodiment of a video signal synthesizing device according to the present invention.
- An object of the present invention is to provide a video signal phase synchronizing method, circuit, and synthesizing apparatus that can synthesize an image represented by a digital video signal and a plane image represented by an analog video signal with a simple configuration. thing It is. Therefore, in the present invention, a continuous wave signal synchronized with the color sub-carrier signal of the analog video signal is generated, and the color signal component of the digital video signal is converted into a carrier color signal by using the continuous wave signal. A composite video signal including a carrier chrominance signal synchronized with the phase of a chrominance subcarrier signal of an analog video signal is formed.
- FIG. 1 is a block diagram showing a configuration of a first embodiment of a video signal synthesizing apparatus including a circuit for realizing a video signal phase synchronization method according to the present invention.
- an input terminal 1 is supplied with an analog video signal (composite video signal).
- the analog video signal from the input terminal 1 is supplied to the first chrominance subcarrier extraction circuit 2.
- the color sub-carrier extraction circuit 2 is, for example, a burst gate circuit that gates the supplied analog video signal at a predetermined timing to extract a color burst signal (color sub-carrier signal). is there.
- the first chrominance subcarrier signal extracted by the first chrominance subcarrier extraction circuit 2 is supplied to the phase error detection circuit 3.
- the phase error detection circuit 3 is supplied with a second color subcarrier signal in a composite video signal formed from a digital video signal described later. Then, the phase error detection circuit 3 detects the magnitude and direction (slow / fast) of the phase difference between the first and second color subcarrier signals.
- the phase error detection circuit 3 is, for example, a phase detection circuit, and the magnitude and direction of the phase difference between the first and second color subcarrier signals supplied to the phase detection circuit (slow and fast) ) Is detected. It should be noted that the approximate phase of a synchronizing signal or the like between the analog video signal that is the source of the first and second color subcarrier signals and the composite video signal formed from the digital video signal is assumed to be in advance. .
- the detection signal of the phase difference detected by the phase error detection circuit 3 is AZ
- An analog value indicating the magnitude and direction of the phase difference of the detection signal is supplied to the D conversion circuit 4 and is converted into a digital value.
- the magnitude and direction values of the phase difference converted into the digital values are supplied to a numerically controlled digital oscillation circuit 5, and a continuous wave signal whose phase is synchronized with the color subcarrier signal is converted into a digital value. It is formed.
- the numerically controlled digital oscillation circuit 5 sequentially returns, for example, a sine waveform signal having a required frequency and phase according to the input digital value of the magnitude and direction of the phase difference, for example. It occurs with a digital value that changes.
- the oscillation circuit 5 outputs, for example, a continuous wave signal (color subcarrier signal) phase-synchronized with the first color subcarrier signal extracted from the analog video signal by the first color subcarrier extraction circuit 2 described above. Signal) is extracted digitally.
- a continuous wave signal of a digital sine wave signal and a digital cosine wave signal phase-locked to the above-described first color subcarrier signal is formed.
- a continuous wave signal of the digital sine wave signal and the digital cosine wave signal formed by the oscillation circuit 5 is supplied to the digital video signal conversion circuit 6.
- the digital video signal supplied to the terminal 7 is converted into an analog composite video signal using the digital sine wave signal and digital cosine wave signal.
- the analog video signal converted by the digital video signal conversion circuit 6 is supplied to the mixing circuit 8, and is synthesized or superimposed with the analog video signal from the input terminal 1 described above.
- the folded analog video signal is taken out to the output terminal 9.
- the analog duplication from the digital video signal The combined video signal is supplied to the second color subcarrier extraction circuit 10, and the extracted second color subcarrier signal is supplied to the above-described phase error detection circuit 3. Accordingly, when a phase difference occurs between the analog video signal from the input terminal 1 and the analog video signal converted by the digital video signal conversion circuit 6, the phase difference is removed. Feedback control is performed to perform the control.
- the second carrier chrominance signal synchronized in phase with the first carrier chrominance signal of the analog video signal supplied to the input terminal 1 is provided from the digital video signal supplied to the input terminal 7.
- An analog composite video signal is formed.
- the analog video signal and the analog composite video signal can be directly synthesized because the phases of the carrier color signals are synchronized with each other.
- the digital video signal conversion circuit 6 for converting the digital video signal into the composite video signal using the digital sine wave signal S in and the digital cosine wave signal C os includes, for example, It is composed of That is, FIG. 2 shows a specific circuit configuration of the digital video signal conversion circuit 6.
- the color signal of the luminance signal Y and the two axes of the digital video signal supplied to the input terminal 2 0 C B, C R are supplied to a matrix circuit 2 1 of digital. Further, in the matrix circuit 21, digital luminance signals Y and color difference signals R_Y and BY are extracted from the digital video signals described above. The extracted digital luminance signal Y is supplied to a digital NTSC encoder circuit 22.
- the digital chrominance signal R—Y from the matrix circuit 21 is supplied to the multiplication circuit 23 and multiplied by the above-mentioned digital sine wave signal S in supplied to the terminal 24.
- the digital chrominance signal B—Y from the matrix circuit 21 is supplied to the multiplication circuit 25, And the digital cosine wave signal C 0 s supplied to Then, these multiplied signals are added by the adding circuit 27 to form a digital carrier color signal Sc.
- the digital carrier color signal Sc is supplied to a digital NTSC encoder circuit 22. Then, the signal is combined with the above-described digital luminance signal Y in the NTSC encoder circuit 22 to form, for example, an NTSC composite video signal in digital form. Further, the digital composite video signal is supplied to a DZA conversion circuit 28, converted into an analog composite video signal V, and taken out to an output terminal 29. Accordingly, in this circuit, the digital video signal supplied to the input terminal 20 is encoded (converted) using the digital sine wave signal S in and the digital cosine wave signal C 0 s supplied to the terminals 24 and 26. You. Further, the encoded digital composite video signal is DZA-converted, so that the digital video signal supplied to the input terminal 20 is converted into, for example, an NTSC analog composite video signal and output to the output terminal 29. Is taken out.
- the digital sine wave signal S in and the digital cosine wave signal C 0 s formed by the oscillation circuit 5 are supplied to the terminals 24 and 26 described above.
- the color signal component in the digital video signal supplied to the input terminal 7 is encoded (converted) in phase synchronization with the color subcarrier signal of the analog video signal supplied to the input terminal 1.
- the phase of the analog video signal and the phase of the digital video signal encoded in phase with the analog video signal are synchronized at the level of the carrier chrominance signal.
- the second color subcarrier signal is extracted from the analog composite video signal from the digital video signal conversion circuit 6 by the second color subcarrier extraction circuit 10.
- the color subcarrier signal is supplied to the above-described phase error detection circuit 3 so that the analog sub-video signal from the input terminal 1 and the analog composite video signal converted by the digital video signal conversion circuit 6 are converted.
- feedback control is performed to eliminate the phase difference.
- a continuous wave signal synchronized with the color subcarrier signal of the analog video signal is generated, and the color signal component of the digital video signal is converted into a carrier color signal by using the continuous wave signal.
- a composite video signal is formed which includes a carrier chrominance signal synchronized with the phase of the chrominance sub-carrier signal of the analog video signal.
- FIG. 3 is a block diagram showing the configuration of a second embodiment of a video signal synthesizing apparatus including a circuit for realizing the video signal phase synchronization method according to the present invention.
- parts corresponding to the above-mentioned FIG. 1 are denoted by the same reference numerals, and redundant description will be omitted.
- an analog signal from the input terminal 1 The log video signal is supplied to the first color subcarrier extraction circuit 2. Further, the first color subcarrier signal extracted by the first color subcarrier extraction circuit 2 is supplied to the phase error detection circuit 3.
- the output of the phase error detection circuit 3 is supplied to the voltage control type oscillation circuit 11. Further, the output of the phase error detection circuit 3 controls the phase of the oscillation signal from the oscillation circuit 11. Then, the output of the oscillation circuit 1 # is fed back to the phase error detection circuit 3.
- phase lock loop is formed by the phase error detection circuit 3 and the voltage control type oscillation circuit 11.
- the oscillation circuit 11 outputs a continuous wave signal of, for example, a sine wave signal which is phase-synchronized with the first color subcarrier signal.
- the continuous wave signal is supplied to the AZD conversion circuit 4, and an analog value indicating the waveform of the continuous wave signal is converted into a digital value. Accordingly, the AZD conversion circuit 4 outputs, for example, a digital sine wave signal obtained by digitally converting a sine wave signal phase-synchronized with the first color subcarrier signal.
- the AD conversion circuit 4 outputs a digital sine wave signal phase-synchronized with the first color sub-carrier signal of the analog video signal supplied to the input terminal 1. You. Then, this digital sine wave signal is supplied to the digital video signal conversion circuit 6 through the contact “a” of the switching circuit 12.
- the switching circuit 12 When the analog video signal is not supplied to the input terminal 1, the switching circuit 12 is switched to the contact "b". Thus, for example, a digital sine wave signal from the standard digital sine wave generation circuit 13 is supplied to the digital video signal conversion circuit 6 through the contact “b” of the switching circuit 12.
- the analog port converted by the digital video signal conversion circuit 6 The composite video signal is supplied to the mixing circuit 8 and is synthesized or superimposed with the analog video signal from the input terminal 1 described above.
- the synthesized or superimposed analog video signal is extracted to the output terminal 9.
- the digital sine wave signal is supplied to the digital video signal conversion circuit 6. Therefore, similarly to the device of the first embodiment, the digital video signal supplied to the terminal 7, for example, is converted into an analog composite video signal using the digital sine wave signal.
- the color signal component in the digital video signal supplied to the input terminal 7 is phase-synchronized with the color subcarrier signal of the analog video signal supplied to the input terminal 1. Then, the conversion (conversion) is performed.
- phase of the analog video signal and the phase of the digital video signal encoded in phase with the analog video signal are synchronized with each other at the level of the carrier chrominance signal.
- the image represented by the digital video signal and the image represented by the analog video signal can be directly composed or superimposed.
- the image represented by the digital video signal supplied to the input terminal 7 and the image represented by the analog video signal supplied to the input terminal 1 are directly synthesized or superimposed, and the The synthesized or superimposed video signal can be taken out to the output terminal 9.
- the switching circuit 12 when the analog video signal is not supplied to the input terminal 1, the switching circuit 12 is switched to the contact point "b".
- the circuit 6 is supplied with, for example, a digital sine wave signal from the standard digital sine wave generation circuit 13. Using this standard digital sine wave signal, a digital video signal supplied to, for example, the terminal 7 is supplied to the analog sine wave signal. It is converted to a composite video signal.
- FIG. 4 is a block diagram showing a configuration of a third embodiment of a video signal synthesizing apparatus including a circuit for realizing the video signal phase synchronization method according to the present invention.
- FIG. 4 portions corresponding to the above-mentioned FIGS. 1 and 3 are denoted by the same reference numerals, and redundant description will be omitted.
- the analog video signal from the input terminal 1 is first sent to the first color sub-carrier extraction circuit 2 as in the device of the second embodiment.
- the supplied and extracted first chrominance subcarrier signal is supplied to the phase difference detector 3.
- the output of the phase error detection circuit 3 is supplied to the voltage control type oscillation circuit 11, and the output of the phase error detection circuit 3 controls the phase of the oscillation signal from the oscillation circuit 11.
- phase-locked loop PLL
- the oscillation circuit 11 outputs a phase-locked loop to the first color subcarrier signal. For example, a continuous wave signal of a sine wave signal is output.
- the continuous wave signal of the sine wave signal from the oscillation circuit 11 is further supplied to the second phase error detection circuit 14.
- the phase error detection circuit 14 is supplied with a second color subcarrier signal in a composite video signal formed from a digital video signal described later.
- the phase error detection circuit 14 the magnitude and direction (slow / fast) of the phase difference between these first and second color subcarrier signals are determined. Is detected. Then, a detection signal of the phase difference detected by the phase error detection circuit 14 is supplied to the A / D conversion circuit 4, and the magnitude and direction of the phase difference converted into a digital value are converted into a numerically controlled digital signal. It is supplied to the oscillation circuit 5.
- a continuous wave signal (color sub-carrier) phase-synchronized with the first color sub-carrier signal extracted from the analog video signal by the first color sub-carrier extraction circuit 2 described above.
- the carrier signal is digitally extracted.
- the continuous wave signal of the digital sine wave signal and the digital cosine wave signal formed by the oscillation circuit 5 is supplied to the digital video signal conversion circuit 6.
- the digital video signal supplied to the terminal 7 is converted into an analog composite video signal using the digital sine wave signal and digital cosine wave signal.
- the analog composite video signal converted by the digital video signal conversion circuit 6 is supplied to the mixing circuit 8, where it is synthesized or superimposed with the analog video signal from the input terminal 1, and the synthesized or superimposed analog signal is input.
- the video signal is output to the output terminal 9.
- the analog composite video signal from the digital video signal conversion circuit 6 is supplied to a second chrominance subcarrier extraction circuit 10, and the extracted second chrominance subcarrier signal is supplied to the above-described phase error detection circuit. Supplied to 3. Accordingly, when a phase difference occurs between the analog video signal from the input terminal 1 and the analog video signal converted by the digital video signal conversion circuit 6, the phase difference is removed.
- the feedback control is performed as follows.
- the image represented by the digital video signal supplied to the input terminal 7 and the image represented by the analog video signal supplied to the input terminal 1 are directly synthesized. Or superimposed, and outputs the synthesized or superimposed video signal of these images to output terminal 9 That can be taken out.
- the second color subcarrier extraction circuit 10 extracts a second color subcarrier signal from the analog composite video signal from the digital video signal conversion circuit 6,
- the signal is supplied to the above-described phase error detection circuit 3, so that the position between the analog video signal from the input terminal 1 and the analog video signal converted by the digital video signal conversion circuit 6 is changed.
- feedback control is performed so as to remove the phase difference.
- a continuous wave signal synchronized with the color subcarrier signal of the analog video signal is generated, and the color signal component of the digital video signal is converted into a carrier color signal using the continuous wave signal.
- a composite video signal including a carrier chrominance signal synchronized with the phase of the color subcarrier signal of the analog video signal is formed.
- phase synchronization of a video signal of the present invention for example, with a simple configuration, it is possible to convert a carrier color signal of an analog video signal and a composite video signal formed from a digital video signal.
- the phase of the carrier chrominance signal can be synchronized, and the image represented by the digital video signal and the image represented by the analog video signal can be easily synthesized.
- the present invention can be applied to the formation of a composite video signal of the PAL system and other systems. Further, it is needless to say that the present invention can be applied to not only the two-axis modulation method but also, for example, a three-axis modulation method. Furthermore, the present invention greatly deviates from the gist of the present invention. It goes without saying that various modifications can be made without departing from the scope.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
- Color Television Systems (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/750,902 US5784118A (en) | 1995-04-21 | 1996-04-19 | Video signal phase synchronizing method, circuit and synthesizing apparatus |
RU97100793/09A RU2172568C2 (ru) | 1995-04-21 | 1996-04-19 | Способ и схема фазовой синхронизации видеосигналов и устройство для синтезирования видеосигналов |
EP96910206A EP0767590A4 (en) | 1995-04-21 | 1996-04-19 | METHOD AND CIRCUIT FOR PHASE SYNCHRONIZATION OF VIDEO SIGNALS AND COMBINATION DEVICE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9673195 | 1995-04-21 | ||
JP7/96731 | 1995-04-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996033577A1 true WO1996033577A1 (fr) | 1996-10-24 |
Family
ID=14172876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/001071 WO1996033577A1 (fr) | 1995-04-21 | 1996-04-19 | Procede et circuit de synchronisation de phase d'un signal video, et dispositif combine |
Country Status (6)
Country | Link |
---|---|
US (1) | US5784118A (ja) |
EP (1) | EP0767590A4 (ja) |
KR (1) | KR100413611B1 (ja) |
CN (1) | CN1110969C (ja) |
RU (1) | RU2172568C2 (ja) |
WO (1) | WO1996033577A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7319492B2 (en) * | 2003-03-05 | 2008-01-15 | Broadcom Corporation | Open loop subcarrier synchronization system |
TWI220366B (en) * | 2003-08-11 | 2004-08-11 | Mediatek Inc | Scalable video format conversion system |
MXPA06003607A (es) * | 2003-10-16 | 2006-06-05 | Chiron Corp | Quinazolinas, quinoxalinas, quinolinas e isoquinolinas 2.6-disubstituidas como inhibidores de la cinasa raf para el tratamiento del cancer. |
CN1319379C (zh) * | 2004-07-13 | 2007-05-30 | 优网通国际资讯股份有限公司 | 混合信号影像实时显示方法 |
US7486336B2 (en) * | 2005-03-31 | 2009-02-03 | Mstar Semiconductor, Inc. | ADC system, video decoder and related method for decoding composite video signal utilizing clock synchronized to subcarrier of composite video signal |
CN102547308B (zh) * | 2010-12-20 | 2015-01-07 | 晨星软件研发(深圳)有限公司 | 电压电位控制电路与其相关方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6489692A (en) * | 1987-09-30 | 1989-04-04 | Toshiba Corp | Chrominance signal modulation and demodulation device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5051817A (en) * | 1988-11-18 | 1991-09-24 | Rohm Co., Ltd. | Superimposing system |
US4992874A (en) * | 1989-07-03 | 1991-02-12 | Rca Licensing Corporation | Method and apparatus for correcting timing errors as for a multi-picture display |
EP0575419A1 (de) * | 1990-05-01 | 1993-12-29 | Deutsche Thomson-Brandt Gmbh | Schaltung zum erzeugen eines farbträgers aus dem farbsynchronsignal |
US5541666A (en) * | 1994-07-06 | 1996-07-30 | General Instrument | Method and apparatus for overlaying digitally generated graphics over an analog video signal |
-
1996
- 1996-04-19 EP EP96910206A patent/EP0767590A4/en not_active Withdrawn
- 1996-04-19 US US08/750,902 patent/US5784118A/en not_active Expired - Fee Related
- 1996-04-19 RU RU97100793/09A patent/RU2172568C2/ru not_active IP Right Cessation
- 1996-04-19 KR KR1019960706476A patent/KR100413611B1/ko not_active IP Right Cessation
- 1996-04-19 CN CN96190369A patent/CN1110969C/zh not_active Expired - Fee Related
- 1996-04-19 WO PCT/JP1996/001071 patent/WO1996033577A1/ja not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6489692A (en) * | 1987-09-30 | 1989-04-04 | Toshiba Corp | Chrominance signal modulation and demodulation device |
Non-Patent Citations (1)
Title |
---|
See also references of EP0767590A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN1110969C (zh) | 2003-06-04 |
US5784118A (en) | 1998-07-21 |
KR970703682A (ko) | 1997-07-03 |
KR100413611B1 (ko) | 2004-05-20 |
RU2172568C2 (ru) | 2001-08-20 |
EP0767590A4 (en) | 2000-11-29 |
CN1150879A (zh) | 1997-05-28 |
EP0767590A1 (en) | 1997-04-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6014176A (en) | Automatic phase control apparatus for phase locking the chroma burst of analog and digital video data using a numerically controlled oscillator | |
KR890006090A (ko) | 디지탈 비디오 신호처리회로 | |
KR910010112B1 (ko) | 영상신호 합성장치. | |
WO1996033577A1 (fr) | Procede et circuit de synchronisation de phase d'un signal video, et dispositif combine | |
JPH01252091A (ja) | ビデオテープレコーダのデジタル回路 | |
KR910001653B1 (ko) | 컬러 영상신호 합성장치 | |
KR20010033521A (ko) | 2중루프pll회로 및 이 pll회로를 이용한색복조회로 | |
KR920007606B1 (ko) | 영상 신호 처리 방법 및 장치 | |
JP2773863B2 (ja) | 映像信号合成装置 | |
EP0524618B1 (en) | Image signal processing device | |
JP2643929B2 (ja) | 映像信号合成装置 | |
KR200274172Y1 (ko) | 디지털 그래픽 기능을 이용한 온스크린 디스플레이출력장치 | |
JP2773864B2 (ja) | 映像信号合成装置 | |
JP3272000B2 (ja) | 信号処理装置 | |
JPH0748866B2 (ja) | 映像信号合成装置 | |
JP2529469B2 (ja) | テレビジョン方式変換装置 | |
JP3129866B2 (ja) | アスペクト比変換装置 | |
JP2529461B2 (ja) | テレビジョン方式変換装置 | |
JPS63199596A (ja) | 映像信号処理装置 | |
JP2914268B2 (ja) | 映像信号処理装置およびその処理方法 | |
KR100206807B1 (ko) | 영상기기의 수퍼임포우즈 장치 | |
JP2812463B2 (ja) | 映像信号合成装置 | |
JPH06292151A (ja) | ハイビジョン信号変換装置 | |
JPH0822080B2 (ja) | 映像信号合成装置 | |
JPH04167890A (ja) | テレビジョン信号再生装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 96190369.4 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CN JP KR RU US VN |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1996910206 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1019960706476 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 08750902 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1199690491 Country of ref document: VN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 1996910206 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1996910206 Country of ref document: EP |