KR20140058121A - The iptv channel switching time automatic measurement system and method with image processing of channel number - Google Patents

The iptv channel switching time automatic measurement system and method with image processing of channel number Download PDF

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Publication number
KR20140058121A
KR20140058121A KR1020120124756A KR20120124756A KR20140058121A KR 20140058121 A KR20140058121 A KR 20140058121A KR 1020120124756 A KR1020120124756 A KR 1020120124756A KR 20120124756 A KR20120124756 A KR 20120124756A KR 20140058121 A KR20140058121 A KR 20140058121A
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KR
South Korea
Prior art keywords
channel
stb
iptv
image
channel switching
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KR1020120124756A
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Korean (ko)
Inventor
주해종
송호빈
김상수
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(주)콘텐츠비젼
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Priority to KR1020120124756A priority Critical patent/KR20140058121A/en
Publication of KR20140058121A publication Critical patent/KR20140058121A/en

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    • 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]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
    • H04N21/42206—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor characterized by hardware details
    • H04N21/42212—Specific keyboard arrangements
    • H04N21/42213—Specific keyboard arrangements for facilitating data entry
    • H04N21/42215—Specific keyboard arrangements for facilitating data entry by measuring the time interval during which a key is pressed, e.g. for inputting sequences of digits when selecting a television channel
    • 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]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
    • H04N21/42206—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor characterized by hardware details
    • H04N21/42221—Transmission circuitry, e.g. infrared [IR] or radio frequency [RF]
    • 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]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/482—End-user interface for program selection

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  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The present invention relates to a quality measuring method using a system for automatically measuring channel change time in a set top box (STB) of a subscriber terminal in a network environment providing an IPTV service. A device for automatically measuring channel change time transmits channel information to an infrared ray transmitter by being connected to the rear end of the STB which is the subscriber terminal of the IPTV service. The device for automatically measuring channel change time deducts an accurate channel change time measurement value of the STB by analyzing the channel information and an image, which is transmitted to an image capture board as the STB changes a channel according to a transferred channel number, by processing the image. Therefore, the present invention improves the IPTV service by estimating the IPTV channel change time.

Description

[0001] The present invention relates to an IPTV channel switching time automatic measurement system and method using image processing of a channel number,

The present invention relates to a system and a method for automatic set-top box (STB) channel call measurement using image processing, and more particularly to a system and method for automatically measuring channel settling time And more particularly, to a method for automatically measuring a channel switching time when a screen is switched using a measurement system in an environment where a subscriber uses an IPTV service using a remote controller.

The apparatus and method for measuring the channel change time of the first Internet protocol television (Application No. 10-2006-0058698) are provided in the STB (Set top box) A channel switching time from a service provider to a set top box (STB) is measured by measuring a time of joining and leaving a multicast group when a broadcast is received through joining or leaving of a multicast group. . In such a scheme, the channel switching time from the network to the set top box (STB) front is known, but the time from the set top box (STB) to the subscriber viewing through the screen can not be measured.

The second IPTV subscriber quality measurement device and method (patent registration number: 1011088880000) is related to the method of measuring the quality of the subscriber terminal. Among the various measurement items, the channel switching measurement method also analyzes the IPTV packet received before the STB, It provides a way to measure channel switching time through joining and leaving.

The two channel switching time measurement methods described above measure the channel switching time from the network to the front set top box (STB). The method proposed in the present invention is a method for measuring the channel switching time from the network to the image displayed on the user screen And how to measure the conversion.

It is an object of the present invention to provide a system for measuring a channel switching time to be actually experienced by an IPTV subscriber and to provide an accurate channel switching time measuring method in the same way as a user switches channels. It is another object of the present invention to construct an automatic channel switching time measuring system capable of improving an IPTV service quality by periodically measuring an estimated channel measurement time period by an ISP company providing an IPTV service in an accurate manner.

In order to solve the above-mentioned problems, the present invention uses the configuration described below. In addition, reference numerals, supplementary explanations, and the like in the channel indicate that the embodiments are described in order to facilitate understanding of the present invention, and do not limit the present invention.

According to the present invention, an infrared transmitter for controlling an STB (Set Top Box) of an IPTV subscriber and an image output from a set top box (STB) are stored using a capture board. Also, an accurate channel switching time measurement method by reading a channel switching number and a reception image by using an image processing method for reading a stored image will be described in detail with reference to the accompanying drawings.

FIG. 1 illustrates a general configuration of an IPTV channel switching time automatic measurement system according to a preferred embodiment of the present invention.

The general IPTV service flow is such that when a subscriber of an IPTV service selects a desired channel, video data provided from the IPTV service company through the IPTV network 11 is transmitted to the STB 12 so that the subscriber can view the channel through the TV.

The IPTV channel switching automatic measuring apparatus 14 according to the preferred embodiment of the present invention is disposed at the rear end of the STB. An IPTV user installs an infrared transmitter 13 for controlling the STB by operating a remote controller, To transmit the IR command.

Also, the STB decodes the video data received by the STB 12 and causes the video capture board 205 of the channel switching automatic measuring apparatus to receive the video transmitted through the video output terminal 207, The channel changeover time measurement value is calculated using the channel change automatic measurement software 15 and is measured repeatedly until the measurement is completed according to the previously prepared channel changeover measurement scenario 102. [

FIG. 2 shows a block diagram of IPTV automatic channel switching time measurement software according to an embodiment of the present invention.

The IPTV channel switching automatic measurement software according to the exemplary embodiment of the present invention includes a user interface / database: controlling (204) an IR transmission module, creating a test scenario, analyzing test results, and storing results.

Scan algorithm 203: An algorithm for storing the received IPTV video image and identifying the channel number

The description of the Scam algorithm is as follows.

As shown in the figure below, the number is extracted from the area where the channel information of the received image is displayed, and the number of the extracted area is compared with the number input in the scenario.

Figure pat00001

Test Result Analysis (202): It consists of measuring the time from the transmission time of IR command sent out to the channel for channel switching to the first image in which the video signal and channel number are normally received.

3 is a flow chart illustrating in detail the step-by-step performance of the IPTV automatic channel switching time measuring method according to the embodiment of the present invention.

First, the measurement information input unit 101 inputs the information of the STB to be measured, and creates a scenario using a test scenario preparation / editing unit 102 for creating a channel switching number similar to a channel switching environment.

The user selects the scenario created using the test scenario selection unit (103).

When all of the above preparations are completed, test execution (104) starts and the channel switching time measurement starts in the following steps.

1. STB Power On (105): Power on the STB to check the normal operation of the initial STB.

2. Start screen capture (106): When the STB operates normally, it receives the IPTV video signal from the STB, captures the video signal, and scans the initial channel information to confirm it with information.

3. transmitting an IR signal (107): sends an IR command to the infrared transmitter for the selected test scenario (103) and sends it to the infrared transmitter (13).

4. Screen switching: The command sent from the infrared transmitter (13) is transmitted to the STB, and it is confirmed whether or not the screen is switched.

5. Number recognition (109): It recognizes the number displayed on the received video and confirms that it is the same as the transmitted channel number according to the test scenario.

6. Channel Transition Time Calculation Measurement 110: When the image received from the reference (T0: 0 second) when the last command of the outputted channel number is transmitted according to the test scenario is normal and the channel number of the image is normally confirmed (T +) is calculated as the channel switching time.

Figure pat00002

7. Analyze / Save Results (111): Analyze and save the measurement results when the selected test scenario is finished.

8. End the test after all test scenarios have been completed.

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, 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 invention as defined by the appended claims.

According to the present invention, by measuring the channel switching time at the subscriber terminal of the IPTV service, it can be used as a service quality index when each subscriber uses the service, and the measured data can be used for the service within the international IPTV channel switching time It can be used to improve the channel switching service quality of IPTV which is being serviced in real time.

In addition, STB and digital TV manufacturers can be used to verify STB and digital TV channel switching performance and to measure digital TV response time by eliminating channel switching factors that may occur in the network.

FIG. 1 is a block diagram illustrating an automatic configuration of an STB (Set Top Box) channel switching automatic measurement system according to an embodiment of the present invention.
2 is a block diagram of IPTV automatic channel switching time measurement software according to an embodiment of the present invention.
FIG. 3 is a flow chart illustrating details of the step-by-step performance of the IPTV automatic channel switching time measuring method according to the embodiment of the present invention.

Claims (4)

A method for measuring an IPTV channel switching time at an IPTV subscriber terminal, the method comprising: transmitting an IR signal using an IR transmitter; capturing an image signal output from the STB; analyzing the received image to read a channel number , And measuring the channel switching time based on the reading.
The method as claimed in claim 1, further comprising: selecting a channel display area of the received image, comparing the channel number displayed on the image with a channel number transmitted through an infrared transmitter, Automatic measurement of conversion time.
The method as claimed in claim 1, wherein the channel switching time measurement value is calculated from the transmission time of the IR command transmitted last time to the reception of the latest normal image including the channel number, How to measure time automatically
An apparatus for automatically measuring an IPTV channel switching time, comprising: an infrared transmitter for controlling an STB of an IPTV subscriber terminal; a data receiver for capturing an image signal output from the STB; an image receiver for reading channel information of a received image; And a test result analysis unit for deriving a panel conversion measurement time using the read image.
KR1020120124756A 2012-11-06 2012-11-06 The iptv channel switching time automatic measurement system and method with image processing of channel number KR20140058121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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