KR20130042327A - Method for operating an image display apparatus - Google Patents
Method for operating an image display apparatus Download PDFInfo
- Publication number
- KR20130042327A KR20130042327A KR1020110106573A KR20110106573A KR20130042327A KR 20130042327 A KR20130042327 A KR 20130042327A KR 1020110106573 A KR1020110106573 A KR 1020110106573A KR 20110106573 A KR20110106573 A KR 20110106573A KR 20130042327 A KR20130042327 A KR 20130042327A
- Authority
- KR
- South Korea
- Prior art keywords
- response
- request message
- server
- cache
- image display
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
Abstract
According to an embodiment of the present invention, a method of operating an image display apparatus includes transmitting a first test request message to a first server, and receiving a first response corresponding to the first test request message. Sending a second test request message to a second server, receiving a second response corresponding to the second test request message, and based on the first response and the second response, a no-cache. And transmitting the request message set to.
Description
BACKGROUND OF THE
The image display device is a device having a function of displaying an image that a user can watch. The user can watch the broadcast through the image display device. A video display device displays a broadcast selected by a user among broadcast signals transmitted from a broadcast station on a display. Currently, broadcasting is shifting from analog broadcasting to digital broadcasting worldwide.
Digital broadcasting refers to broadcasting for transmitting digital video and audio signals. Digital broadcasting is more resistant to external noise than analog broadcasting, so it has less data loss, is advantageous for error correction, has a higher resolution, and provides a clearer picture. In addition, unlike analog broadcasting, digital broadcasting is capable of bidirectional services.
SUMMARY OF THE INVENTION An object of the present invention is to provide an image display apparatus and an operation method thereof capable of receiving and playing contents through a network.
In addition, another object of the present invention is to provide an image display apparatus and an operation method thereof that can improve user convenience.
According to another aspect of the present invention, there is provided a method of operating an image display device, the method comprising: transmitting a first test request message to a first server; receiving a response, sending a second test request message to a second server, receiving a second response corresponding to the second test request message, and based on the first response and the second response, Sending a request message set to a no-cache.
In accordance with an aspect of the present invention, there is provided a method of operating an image display apparatus, the method including transmitting a test request message to a reference server, receiving a response corresponding to the test request message, and receiving the received response. Comparing the previously stored reference response to the previously stored reference response and transmitting a request message set to no-cache to the content server when the received response is different from the previously stored reference response.
According to the present invention, content can be received and played back without malfunction through a network, thereby improving user convenience.
1 is a diagram schematically illustrating a video display device system according to an exemplary embodiment of the present invention.
2 is a block diagram illustrating an image display apparatus according to an exemplary embodiment of the present invention.
3 and 5 are views referred to for explaining a process of receiving content.
6 is a flowchart illustrating a method of operating an image display apparatus according to an exemplary embodiment of the present invention.
FIG. 7 is a diagram referred to describe the operation method of FIG. 6.
8 is a flowchart illustrating a method of operating an image display apparatus according to an exemplary embodiment of the present invention.
FIG. 9 is a diagram referred to describe the operating method of FIG. 8.
Hereinafter, the present invention will be described in more detail with reference to the drawings.
The suffix "module" and " part "for components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves. Accordingly, the terms "module" and "part" may be used interchangeably.
On the other hand, the video display device described herein is an intelligent video display device that can be connected to the network, connected to other devices such as a network and a computer with the support of wired or wireless Internet function, sending and receiving data, email, web browsing, banking Or a game or the like.
1 is a diagram schematically illustrating a video display device system according to an exemplary embodiment of the present invention.
Referring to the drawings, the video display device system according to an embodiment of the present invention, in terms of providing a content service on a broadcast sender basis, is a content provider (CP) 10 and a service provider (Service). It may be divided into a provider (SP) 20, a network provider (NP) 30, and a
The
In addition to the broadcast content, the
The
Meanwhile, the
The
As a means for protecting the content transmitted from the image display device system as described above, conditional access or content protection may be used. As one example for such a restriction reception or content protection, a scheme such as a cable card or a downloadable conditional access system (DCAS) may be used.
On the other hand, the
2 is a block diagram illustrating an image display apparatus according to an exemplary embodiment of the present invention.
Referring to FIG. 2, the
The
For example, if the selected RF broadcast signal is a digital broadcast signal, it may be converted into a digital IF signal (DIF), and if the analog broadcast signal is an analog baseband video or audio signal (CVBS / SIF).
Meanwhile, the
The
The
The stream signal output from the
The external
The external
The A / V input / output unit may receive a video and audio signal of an external device. The wireless communication unit may perform short range wireless communication with another electronic device.
The
Meanwhile, the
In addition, the
The
In addition, the
The
2 illustrates an embodiment in which the
The user
For example, the
The
The image signal processed by the
The audio signal processed by the
Although not shown in FIG. 2, the
In addition, the
In addition, the
For example, the
As another example, the
The
Meanwhile, the
Such a 3D object may be processed to have a different depth than the image displayed on the
The
The
The
The
The
A photographing unit (not shown) photographs the user. The photographing unit (not shown) may be implemented by a single camera, but the present invention is not limited thereto, and may be implemented by a plurality of cameras. Meanwhile, the photographing unit (not shown) may be embedded in the
The
The
To this end, the
The
In addition, the
The
Meanwhile, the above-described
Meanwhile, the video display device described in the present specification can be applied to a TV set, a monitor, a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a PDA (personal digital assistant), a portable multimedia player (PMP) And the like.
Meanwhile, a block diagram of the
On the other hand, the
The
3 and 5 are views for explaining a process of receiving content by the image display apparatus.
FIG. 3 illustrates an example in which the
Referring to FIG. 3, first, the
In addition, the
The request message for requesting an index stream and a stream for content reproduction may be transmitted in a cached state to use a cache memory of the image display apparatus. Or, if there is no no-cache configuration, the cache can be used normally.
The
Meanwhile, the index stream and the stream for reproducing the content may be the same. In other words, the same data can be used for other purposes.
The
4 and 5 illustrate an example in which the
The proxy server is a server that acts as an intermediary between the terminal and the Internet. The proxy server provides security, administrative level regulation, and cache services. The proxy server may be associated with or be part of a gateway server that separates the internal network from the external network, and a firewall server that protects the internal network from external intrusions.
By storing the information the user has accessed over the network in the storage, if the information requested by the user is in the storage, the request can be made faster because the information can be provided to the user without receiving data from a remote place via the network. Can provide a response.
On the other hand, in the case of passing through an arbitrary proxy server, there may be a case in which a hotel, such as a VBN (Visitor Based Network) used for billing purposes, may be used.
In the case of such a proxy server, the cache setting and the cache memory capacity may not be known, and a collision may occur and an error may occur.
For example, the request message and response are normally exchanged between the
An example of such a cache malfunction of the
Referring to FIG. 4, the
Meanwhile, the
Since the
The
Meanwhile, the
Meanwhile, the
Here, the index stream buffer of the
In some embodiments, the index stream data may have a smaller capacity than the stream data for content reproduction.
The
On the other hand, the
Thereafter, the
5 illustrates an example of transmitting an HTTP request message and a TCP request message of an index stream and a data stream, respectively. Since it is similar to that described with reference to FIG. 4, it will be briefly described.
Referring to FIG. 5, in steps S511 to S514, an Http request of the
The above steps may include a request for information on a content URL, and the subsequent steps may include a request for stream data of actual content.
Meanwhile, steps S531 to S535 are TCP requests of the
In operation S534, when the size of the index buffer of the
Accordingly, when the S541 request is made, the
6 is a flowchart illustrating a method of operating an image display apparatus according to an exemplary embodiment of the present invention, and FIG. 7 is a diagram referred to describe the method of operation of FIG. 6. .
First, the
Here, the first server may be a content server, and the
Meanwhile, the
Here, the second server may be a reference server.
On the other hand, the reference server is a server operated by the manufacturer of the image display device to provide additional services, or previously connected to the
Therefore, the
Thereafter, the
That is, when there is a place where the signal passes through like a proxy server, the proxy server may set the data to be bypassed without storing the data received in the cache.
Meanwhile, an embodiment of the present invention may transmit a request message set to no-cache when the first response and the second response are different.
Alternatively, an embodiment of the present invention may further include determining whether the third server passes through the first server by comparing the first response with the second response or comparing headers of the respective responses (S640).
Meanwhile, the request message set as the no-cache may be generated by adding a no-cache header to the header of the request message.
In the request message transmitting step S660 set to the no-cache, when the first response and the second response are different, the request message set to the no-cache may be transmitted. That is, if each response is different, it may be determined that a proxy server or the like exists in the middle to set the data to bypass.
The second response may be a response generated by adding a header to the response received by the second server from the first server.
In this case, since there is a change in the header of the second response, the request message transmitting step S660 set to the no-cache may be performed when the first response is different from the portion except for the header added by the second server. And transmitting the request message set to the no-cache.
Thereafter, when the request message is an index, the
Referring to FIG. 7, first, the
The first test request message may be a separate request message for testing a network connection or a request message for requesting an index stream.
If the
However, if the
The
The
On the other hand, the
Meanwhile, the
In addition, a response of the
When the
The
The
The
Therefore, according to the present invention, it is possible to prevent malfunction due to the cache operation of the proxy server.
8 is a flowchart illustrating a method of operating an image display apparatus according to an exemplary embodiment of the present invention, and FIG. 9 is a diagram referred to describe the method of operation of FIG. 8, and more specifically, a signal flow diagram between an image display apparatus and a server. .
Referring to the drawings, the
If the
Therefore, the
Meanwhile, the request message set as no-cache may be generated by adding a no-cache header to the header of the request message.
Thereafter, when the request message is for an index, the
In the present embodiment, when not via a known proxy server, it is determined whether it is via the proxy server using a reference response transmitted by the reference server.
Referring to FIG. 9, the
If the
According to the present invention, content can be received and played back without malfunction through a network, thereby improving user convenience. More specifically, you can avoid the cache failure of the proxy server.
The image display apparatus and the operation method thereof according to the present invention are not limited to the configuration and method of the embodiments described above, but the embodiments may be applied to all or some of the embodiments May be selectively combined.
Meanwhile, the operation method of the image display apparatus of the present invention can be implemented as a code that can be read by a processor on a recording medium readable by a processor included in the image display apparatus. The processor-readable recording medium includes all kinds of recording apparatuses in which data that can be read by the processor is stored. Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like, and may also be implemented in the form of a carrier wave such as transmission over the Internet. . The processor-readable recording medium can also be distributed over network coupled computer systems so that the processor-readable code is stored and executed in a distributed fashion.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled 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.
Claims (12)
Receiving a first response corresponding to the first test request message;
Sending a second test request message to a second server;
Receiving a second response corresponding to the second test request message; And
Transmitting a request message set to no-cache based on the first response and the second response.
And comparing the first response with the second response to determine whether the third server passes through the third server.
The request message set to the no-cache is generated by adding a no-cache header to a header of the request message.
The request message transmission step set to the no-cache may include:
And transmitting a request message set to the no-cache when the first response is different from the second response.
And wherein the second response is a response generated by adding a header to a response received by the second server from the first server.
The request message transmission step set to the no-cache may include:
And transmitting a request message set to the no-cache when a portion other than the header added by the second server and the first response are different.
And storing the first response.
And transmitting a request message of data for playing a video.
Receiving a response corresponding to the test request message;
Comparing the received response with a previously stored reference response; And
And transmitting a request message set to no-cache to a content server when the received response is different from a previously stored reference response.
And if the received response is different from a previously stored reference response, determining that the response is via a proxy server.
The request message set to no-cache is generated by adding a no-cache header to a header of the request message.
And transmitting a request message of data for playing a video.
Priority Applications (1)
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KR1020110106573A KR20130042327A (en) | 2011-10-18 | 2011-10-18 | Method for operating an image display apparatus |
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KR1020110106573A KR20130042327A (en) | 2011-10-18 | 2011-10-18 | Method for operating an image display apparatus |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108667536A (en) * | 2018-04-26 | 2018-10-16 | 国网冀北电力有限公司秦皇岛供电公司 | A kind of test method and device for analog signal communication system |
US10313207B2 (en) | 2014-03-10 | 2019-06-04 | Sk Techx Co., Ltd. | Method for testing cloud streaming server, and apparatus and system therefor |
-
2011
- 2011-10-18 KR KR1020110106573A patent/KR20130042327A/en not_active Application Discontinuation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10313207B2 (en) | 2014-03-10 | 2019-06-04 | Sk Techx Co., Ltd. | Method for testing cloud streaming server, and apparatus and system therefor |
CN108667536A (en) * | 2018-04-26 | 2018-10-16 | 国网冀北电力有限公司秦皇岛供电公司 | A kind of test method and device for analog signal communication system |
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