KR101684793B1 - Digital image transmission system using single line and image transmission method therefor - Google Patents
Digital image transmission system using single line and image transmission method therefor Download PDFInfo
- Publication number
- KR101684793B1 KR101684793B1 KR1020150100603A KR20150100603A KR101684793B1 KR 101684793 B1 KR101684793 B1 KR 101684793B1 KR 1020150100603 A KR1020150100603 A KR 1020150100603A KR 20150100603 A KR20150100603 A KR 20150100603A KR 101684793 B1 KR101684793 B1 KR 101684793B1
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- switch
- video signal
- transmission
- time
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
- H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/015—High-definition television systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
The present invention relates to a digital image transmission system using a single line and an image transmission method thereof, and more particularly, to a digital image transmission system using a single line and a digital image transmission method capable of transmitting and receiving an image even on a single line by switching a switch using a vertical regression interval System and a method of transmitting the image.
Conventionally, a digital image transmission system using a single line has mainly performed unidirectional transmission of an image from a transmitter to a receiver. However, as the system becomes complicated recently, there is an increasing demand to transmit data from the receiver to the transmitter.
In accordance with such a technical requirement, conventional systems are mainly used by implementing two techniques.
The first is a method of constructing a dedicated line for reverse data transmission in addition to a single line for image transmission. In this case, there is a cost incurred for constructing an additional line and the need to reinstall the existing line system.
A second method is disclosed in Korean Patent Laid-Open Publication No. 2000-0054705 (Method and Apparatus for Transmitting and Receiving Video Signals and Data Signals on Closed Circuit TV, September 5, 2000) And transmitting the reverse transmission data from the receiver to the transmitter through frequency modulation. A technology approach such as that disclosed in Japanese Patent Application Laid-Open No. 2000-0054705 has an advantage of not having to construct an additional line because a single line is used. However, since the remote transmission data is mixed and transmitted through the frequency modulation on the received image data, the quality of the original image signal may be degraded, resulting in degradation of the image quality and shortening of transmission distance due to distortion of the image signal.
An object of the present invention is to provide a digital image transmission system using a single line capable of transmitting and receiving a signal using a single line by using a vertical regression section of a video signal, And a method of transmitting the image.
The digital video transmission system of the present invention can transmit a video signal when the first switch is operated in the first mode using the first switch, A first device capable of receiving a remote signal from the first device; And when the second switch operates in the first mode using the second switch, the video signal can be received from the first device, and when the second switch operates in the second mode, Wherein the switching of the first switch and the second switch from the first mode to the second mode comprises switching the first switch and the second switch from the first mode to the second mode when the start of the vertical regression section of the video signal Time point is used.
Specifically, it is preferable that the start of transmission of the remote signal from the second device to the first device is delayed by a predetermined time from the start time of the vertical regression section of the video signal.
In addition, the transmission completion of the remote signal from the second device to the first device is performed ahead of a predetermined time determined from the end of the vertical regression section of the video signal.
The transmission of the video signal from the first device to the second device may be delayed by a predetermined time after the transmission of the remote signal from the second device to the first device is completed have.
In addition, the second device generates a virtual standard signal in a period in which the second switch operates in the second mode, and processes the video signal using the generated virtual standard signal.
Preferably, the transmission of the video signal from the first device to the second device and the transmission of the remote signal from the second device to the first device use a single line.
The digital image transmission method of the present invention comprises the steps of: (a) receiving a video signal from a first device; (b) detecting a start time of a vertical regression interval from the video signal of the step (a) by the second device; (c) switching the second switch so that the second device can transmit a remote signal to the first device, using the start time of the vertical regression interval detected in step (b); And (d) switching the second switch so that the second device can receive the video signal from the first device.
More specifically, the digital image transmission method of the present invention further comprises: after the step (c), delaying a predetermined time from a start time of a vertical regression section of the video signal, And starts transmission of the data.
The digital image transmission method of the present invention may further include the step of, prior to the step (d), transmitting the remote signal from the second device to the first device by a predetermined time before the end of the vertical regression interval of the video signal, It is preferable to complete the transmission of the data.
In the digital image transmission method of the present invention, after the step (d), after the transmission of the remote signal from the second device to the first device is completed, the digital image is delayed by a predetermined constant time, Reception of the video signal from the first device of the apparatus can be started.
The digital image transmission method of the present invention includes the steps of generating a virtual standard signal during a period in which the second device is switched to the second device so that the second device can transmit the remote signal to the first device; And processing the video signal using the virtual standard signal generated by the second device. Here, the second device is characterized in that a single line is used for transmission of the remote signal to the first device and reception of the video signal from the first device.
According to the digital image transmission system and the image transmission method of the present invention, signals can be transmitted and received using a single line by using a vertical regression interval of a video signal.
1 is a block diagram of a digital image transmission system using a single line according to a first preferred embodiment of the present invention.
2 is an explanatory diagram of a vertical regression section;
3 is a timing chart of signals of a first device and a second device of a digital image transmission system using a single line according to a first preferred embodiment of the present invention.
4 is an explanatory diagram of a first image processing unit and a signal serialization unit;
5 is an explanatory diagram of a second image processing unit and a signal parallelizing unit;
6 is a configuration diagram of a digital image transmission system using a single line according to a second preferred embodiment of the present invention.
FIG. 7 is a timing chart of signals of a first device and a second device of a digital image transmission system using a single line according to a second preferred embodiment of the present invention; FIG.
Hereinafter, a digital image transmission system using a single line according to embodiments of the present invention and an image transmission method thereof will be described in detail with reference to the accompanying drawings.
It should be understood that the following embodiments of the present invention are only for embodying the present invention and do not limit or limit the scope of the present invention. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.
1 is a configuration diagram of a digital
As can be seen from FIG. 1, the digital
The
The
The first
2 is an explanatory diagram of a vertical regression section.
As can be seen from FIG. 2, a video signal such as a general television includes a vertical regression section and a horizontal blanking interval in addition to the effective video region.
3 is a timing diagram of signals of the
In order to operate in the timing diagram shown in Fig. 3, the first switching
Furthermore, the first switching
The remote
4 is an explanatory diagram of the first
The
The
The first mode is a mode in which the
The
The second
In order to operate in the timing chart shown in Fig. 3, the second switching
The second-1 switching time is preferably the same value as the first-1 switching time.
In addition, the second switching
The second-2 switching time is preferably the same value as the first-second switching time.
The
5 is an explanatory diagram of the second
The
The
The first mode is a mode in which the
In the period in which the second switch SW2 operates in the second mode, since the high-speed digital signal is not inputted to the
Accordingly, the virtual
6 is a configuration diagram of a digital
The digital
The
The
The first
7 is a timing diagram of signals of the
In order to operate in the timing chart shown in Fig. 7, the first switching
The first switching
In the 1-2 switching time, the
The remote
4, the
The
The first mode is a mode in which the
The
The
The second switching
The second-1 switching time is preferably the same value as the first-1 switching time.
The second switching
According to the digital
The
Like the second
The
The first mode is a mode in which the
In the period in which the second switch SW2 operates in the second mode, since the high-speed digital signal is not inputted to the
Accordingly, the virtual
A digital image transmission method using a single line according to a first preferred embodiment of the present invention will be described below.
The digital image transmission method using the single line according to the first preferred embodiment of the present invention is based on the use of the digital
A method of transmitting a digital image using a single line according to a first exemplary embodiment of the present invention is a method of transmitting a digital image using a single line in which a
In addition, a method for transmitting a digital image using a single line according to a first exemplary embodiment of the present invention includes a first switch SW1 for allowing a
The transmission of the remote signal from the
In the digital image transmission method using a single line according to the first preferred embodiment of the present invention, before step S160 and step S170, the digital image transmission method using the single line is performed before the predetermined time t2 from the end of the vertical regression section of the video signal, The transmission of the remote signal from the
In addition, a method of transmitting a digital image using a single line according to a first exemplary embodiment of the present invention is a method of transmitting a digital image using a single line, in which the
The
A digital image transmission method using a single line according to a second preferred embodiment of the present invention will now be described.
The digital image transmission method using the single line according to the second preferred embodiment of the present invention is based on the use of the digital
A method for transmitting a digital image using a single line according to a second exemplary embodiment of the present invention is a method for transmitting a digital image using a single line in which a
A method of transmitting a digital image using a single line according to a second exemplary embodiment of the present invention includes a first switch SW1 so that the
The transmission of the remote signal from the
The digital image transmission method using a single line according to the second preferred embodiment of the present invention is characterized in that before the steps S260 and S270, the transmission of the video signal to the
In addition, a method of transmitting a digital image using a single line according to a second preferred embodiment of the present invention is a method in which a
The
As described above, according to the digital
100, 200: Digital image transmission system using single line
110, 210:
111, 211: first
113, 213:
115, 215:
122, 222: second switching
124, 224:
126, and 226:
SW1: first switch SW2: second switch
Claims (13)
Wherein the second switch is capable of receiving the video signal from the first device when the second switch operates in the first mode and when the second switch is operating in the second mode, And a second device capable of transmitting a remote signal to the device,
Characterized in that the switching of the first switch and the second switch from the first mode to the second mode uses the start time of the vertical regression section of the video signal,
The second device comprises:
And generates a virtual standard signal in a period in which the second switch operates in the second mode, and processes the video signal using the generated virtual standard signal.
Wherein the start of transmission of the remote signal from the second device to the first device includes:
Wherein the delay time is delayed by a predetermined time from a start time of the vertical regression section of the video signal.
The completion of the transmission of the remote signal from the second device to the first device,
Wherein the digital video transmission system is preceded by a predetermined time period from an end time of the vertical regression section of the video signal.
Wherein the start of transmission of the video signal from the first device to the second device,
And after the transmission of the remote signal from the second device to the first device is completed, a predetermined time is delayed.
The transmission of the video signal from the first device to the second device and the transmission of the remote signal from the second device to the first device,
And a single line is used.
(b) detecting a start time of a vertical regression interval from the video signal of the step (a) by the second device;
(c) switching the second switch so that the second device can transmit a remote signal to the first device, using the start time of the vertical regression interval detected in step (b);
Generating a virtual standard signal during a period during which the second switch is switched such that the second device can transmit a remote signal to the first device; And
And processing the video signal using the virtual standard signal generated by the second device.
The digital image transmission method may further include, after the step (c)
Wherein the transmission of the remote signal from the second device to the first device is started after a lapse of a predetermined time from the start time of the vertical regression section of the video signal.
The digital image transmission method includes:
(d) switching the second switch so that the second device can receive the video signal from the first device.
The digital image transmission method may further include, before the step (d)
Wherein the transmission of the remote signal from the second device to the first device is completed ahead of a predetermined time before the end of the vertical regression interval of the video signal.
After the step (d)
Wherein after the transmission of the remote signal from the second device to the first device is completed, the image signal is started to be received from the first device of the second device after being delayed by a predetermined period of time. Image transmission method.
The second device comprises:
Wherein a single line is used for transmission of the remote signal to the first device and reception of the video signal from the first device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150100603A KR101684793B1 (en) | 2015-07-15 | 2015-07-15 | Digital image transmission system using single line and image transmission method therefor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150100603A KR101684793B1 (en) | 2015-07-15 | 2015-07-15 | Digital image transmission system using single line and image transmission method therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
KR101684793B1 true KR101684793B1 (en) | 2016-12-08 |
Family
ID=57576844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020150100603A KR101684793B1 (en) | 2015-07-15 | 2015-07-15 | Digital image transmission system using single line and image transmission method therefor |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101684793B1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100130718A (en) * | 2009-06-04 | 2010-12-14 | 삼성전기주식회사 | Electronic apparatus having single transfer cable for receiving and transmitting signal |
KR20110049050A (en) * | 2009-11-04 | 2011-05-12 | 주식회사 아이닉스 | Method and apparatus for transmitting audio and video signal by one transmitting line |
-
2015
- 2015-07-15 KR KR1020150100603A patent/KR101684793B1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100130718A (en) * | 2009-06-04 | 2010-12-14 | 삼성전기주식회사 | Electronic apparatus having single transfer cable for receiving and transmitting signal |
KR20110049050A (en) * | 2009-11-04 | 2011-05-12 | 주식회사 아이닉스 | Method and apparatus for transmitting audio and video signal by one transmitting line |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105376628A (en) | Method and device for synchronizing audio-video signals | |
US20190149702A1 (en) | Imaging apparatus | |
US10484118B2 (en) | Intercom system and communication control method | |
US7460147B2 (en) | Interference detecting circuit utilizing synchronization symbols and method thereof | |
EP0449633A1 (en) | Pay television | |
JP2008242884A (en) | I2c bus control circuit | |
JP4359786B2 (en) | Data transmission device and clock switching circuit | |
KR101684793B1 (en) | Digital image transmission system using single line and image transmission method therefor | |
US8913881B2 (en) | Digital video recorder having appartus for receiving automatic switched image by recognizing source and method thereof | |
US8902285B2 (en) | Wireless communication apparatus for transmitting information on control timing and detecting cause of transmission timing adjustment | |
KR101083179B1 (en) | Audio signal delay apparatus and method | |
JP2018121199A (en) | Receiving device and clock generation method | |
JP2008107397A (en) | Transmission and reception system of hdmi transmission system and its related technique | |
US10979626B2 (en) | Image capturing apparatus, method of controlling same, and storage medium for reducing power consumption in transmission of image data | |
CN109963186B (en) | Video and audio synchronization device and video and audio data synchronization method | |
KR20040111038A (en) | Digital television broadcasting receiver | |
JP6505355B2 (en) | Communication system, receiving apparatus, semiconductor device, and reset method of communication system | |
JP2007060207A (en) | Voice signal processing device | |
JP2006217502A (en) | Image transmission system | |
JPH07192205A (en) | Vcr recording circuit having snow-noise removing function and method therefor | |
JPS6043708B2 (en) | Automatic control method of frame synchronizer | |
JPS5812439A (en) | Automatic antenna switching device | |
JPH01129688A (en) | Picture signal receiver | |
JP2005269135A (en) | Authentication apparatus and authentication method | |
JP2011234118A (en) | Broadcast receiver |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant |