TW201406138A - Error proof method for recording and recording device - Google Patents

Abstract

An error proof method for recording and a recording device is disclosed herein. The method is applied to the recording device, and the recording device is connected to a set-top box. The error proof method includes following steps. In the beginning, whether a startup process of the set-top box has been finished is determined according to a video signal and an audio signal outputted from the set-top box. After the startup process of the set-top box is finished, the image of the video signal is analyzed to determine whether an image of the video signal is covered by an information window. If the image of the video signal is not covered by any information window, then a channel changing signal is transmitted to the set-top box, to change a channel of the set-top box to an expected recording channel. After that, a television program of the expected recording channel is recorded.

Description

Video error prevention method and video device

The invention relates to an error proofing method and a device thereof, and in particular to a video error proofing method and a video recording device.

With the development of technology, television has penetrated into people's lives. People get information from TV shows, or get pleasure and satisfaction. Therefore, in order to let people who are away from home do not miss their favorite TV programs, video installations have long been indispensable for home electronics.

The currently used video recording device is limited to simply executing a preset process, such as turning on the set-top box at a predetermined time, waiting for a predetermined time to switch channels, and waiting for a predetermined time to start recording. Therefore, the above-mentioned video recording apparatus cannot immediately respond to the state of the set-top box, and thus it is easy to cause the video to fail or to record unexpected contents.

In view of this, a video recording method applied to a video recording device and capable of preventing video failure should be proposed.

An aspect of the present invention provides a video error prevention method, which can be applied to a video recording device connected to a set-top box, and analyzes the video signal and audio signal of the set-top box to assist the video recording device to correctly record what the user expects. TV show. According to an embodiment of the invention, the video error protection method comprises the following steps: (a) determining the machine according to the video signal and the audio signal output by the set-top box Whether the upper box is turned on. (b) After the set-top box is turned on, analyze the video signal output from the set-top box to determine whether the picture presented by the video signal is obscured by the message window. (c) When the picture presented by the video signal is not obscured by any of the message windows, the life signal transmitting component transmits a channel switching signal to convert the channel received by the set-top box to the reserved video channel. (d) Start recording after the channel received by the set-top box is switched to the reserved video channel, and store the recorded video in the storage device.

According to an embodiment of the invention, the step (a) includes: determining whether the video signal output by the set-top box is received, and if the video signal output by the set-top box is not received, the life signal transmitting component sends the power signal to Start the box.

According to an embodiment of the invention, step (a) further comprises the following steps. After transmitting the power signal, whether the picture presented by the video signal output by the analysis box includes the set-top box flag of the set-top box. If the picture presented by the video signal does not include the set-top box flag of the set-top box, it is judged that the set-top box fails to be started, and the signal transmitting component restarts the set-top box.

According to an embodiment of the invention, step (a) comprises the following steps. It is judged whether the audio signal output by the set-top box is received, and if the audio signal is received without receiving the audio signal, it is determined whether the picture presented by the video signal is obscured by the message window. If the video message window presented by the video signal is obscured, the life signal transmitting component sends a message window cancellation signal to command the set-top box to eliminate the message window.

According to an embodiment of the invention, the video error protection method further comprises: when the picture presented by the video signal is obscured by the message window, the life signal transmitting component sends the message window cancellation signal to command the set-top box to eliminate the message window.

According to an embodiment of the invention, the video error protection method further comprises: after the channel received by the set-top box is switched to the reserved video channel, analyzing the video signal output by the set-top box to determine whether the picture presented by the video signal is received by the message. Covered by windows. And when the picture presented by the video signal is obscured by the message window, the life signal transmitting component sends a message window cancellation signal to enable the set-top box to eliminate the message window.

According to an embodiment of the invention, the video error protection method further comprises the following steps. The on-screen display (OSD) on the screen presented by the video signal is analyzed to determine whether the channel switching signal is correctly received. If the channel switching signal is received incorrectly, the signal transmitting component repeatedly transmits the channel switching signal to convert the channel received by the set-top box to the reserved video channel.

According to an embodiment of the invention, the video error protection method further comprises the following steps. After converting the channel received by the box, the channel flag on the screen presented by the video signal is analyzed to determine whether the channel converted by the set-top box is a reserved video channel. If the channel identifier of the channel to which the set-top box is switched is different from the channel identifier of the reserved video channel, the signal transmitting component repeatedly transmits the channel switching signal to convert the channel received by the set-top box to the reserved video channel.

Another aspect of the present invention is to provide a video recording device that can accurately record a television program desired by a user by analyzing a video signal and an audio signal of the set-top box. According to an embodiment of the invention, a video recording device includes a signal transmitting component and a data processing component. The data processing component includes a booting determination module, a message window detection module, a channel conversion module, and a video module. The power-on judging module is configured to output video signals and sounds according to the set-top box Frequency signal to determine whether the set-top box is turned on. The message window detection module is configured to analyze the video signal output by the set-top box after the power-on box is turned on, to determine whether the picture presented by the video signal is obscured by the message window. The channel switching module is configured to transmit a channel switching signal to the channel received by the set-top box to the reserved video channel when the picture presented by the video signal is not obscured by any of the message windows. The video module is configured to start recording after the channel received by the set-top box is switched to the reserved video channel, and store the recorded video in the storage device.

According to an embodiment of the invention, the data processing component further includes a message window elimination module. The message window elimination module is used to transmit the message window cancellation signal by the signal transmission component to eliminate the message window of the masked picture.

According to an embodiment of the invention, the power-on determining module includes a video signal determining unit and a set-top box starting unit. The video signal determining unit is configured to determine whether the set-top box outputs a video signal. The set-top box startup unit is configured to send a power signal to activate the set-top box when the set-top box does not output a video signal.

According to an embodiment of the invention, the boot determination module further includes a set-top box flag detecting unit and a set-top box restarting unit. The set-top box flag detecting unit is configured to analyze whether the picture presented by the video signal output by the set-top box includes the set-top box mark of the set-top box after the signal transmitting component sends the power signal to the set-top box. The set-top box restarting unit is configured to restart the set-top box after the set-top box flag detecting unit determines that the picture presented by the video signal does not include the set-top box mark of the set-top box.

According to an embodiment of the invention, the boot determination module further includes an audio signal analysis unit and a command unit. Audio signal analysis unit is used to judge the machine Whether the box outputs an audio signal. The command unit is configured to output the video signal in the set-top box without outputting the audio signal, and the message window detecting module determines whether the picture presented by the video signal is obscured by the message window, and if the picture presented by the video signal is received by the message window If it is obscured, the message window elimination module is notified to eliminate the message window of the masked picture.

According to an embodiment of the invention, the data processing component further includes a caption display analysis module and a first resend module. The subtitle display analysis module is configured to analyze the subtitle display on the screen presented by the video signal to determine whether the channel conversion signal is correctly received. The first resending module is configured to retransmit the channel switching signal to convert the channel received by the set-top box to the reserved video channel when the channel switching signal is erroneously received.

According to an embodiment of the invention, the data processing component further includes a channel marker analysis module and a second resend module. The channel flag analysis module is configured to analyze the channel flag on the screen presented by the video signal after converting the channel received by the box, to determine whether the channel converted by the set-top box is a reserved video channel. The second resending module is configured to retransmit the channel switching signal to convert the channel received by the set-top box when the channel identifier of the channel to which the set-top box is switched is different from the channel identifier of the reserved video channel. Reserve a video channel.

In summary, the embodiment of the present invention can determine whether the set-top box has been turned on, whether the screen output by the set-top box is obscured by the message window, whether the channel switching signal is correctly received, and whether the channel is converted to the reserved video channel. . Through these judgments and automatically making corresponding actions, the video device can correctly record the TV program that the user expects.

The spirit and scope of the present disclosure will be apparent from the following description of the preferred embodiments of the present disclosure. Modifications do not depart from the spirit and scope of the disclosure.

One aspect of the present invention provides a video recording device that is connected to a set-top box and analyzes the video signal of the set-top box by using image recognition technology, and analyzes the audio signal to determine the condition of the set-top box, and correctly records The TV program that the user expects. In the following embodiments of the present invention, the video device may be a computer, a mobile phone, a tablet computer, an embedded system, or other electronic device having image processing functions.

FIG. 1 is a block diagram of a video recording apparatus 100 according to an embodiment of the invention. The video device 100 is connected to the set top box 10, including the signal transmitting component 110 and the data processing component 120. The signal transmitting component 110 is configured to transmit commands to the set-top box 10, which may be an infrared signal transmitter, a Bluetooth signal transmitter, or other wired or wireless signal transmitter. The data processing component 120 is configured to receive signals generated by the box 10 and determine whether to instruct the set-top box 10 to perform operations such as power-on, turntable, or video recording according to signals generated by the set-top box 10. The data processing component 120 can be implemented in a software or a partial software partial hardware circuit.

The data processing component 120 can include a boot determination module 121, a message window detection module 122, a channel conversion module 123, and a video module 124.

The power-on determining module 121 is configured to determine whether the set-top box 10 is powered on according to the video signal and the audio signal output by the set-top box 10. For example, if the video signal and the audio signal are not the sound of the TV program, For the image, the power-on judging module 121 judges that the set-top box 10 has not been turned on. For example, the power-on judging module 121 can determine whether the video signal and the audio signal are sound and video through the dynamic change of the video signal and the audio signal. The message window detection module 122 is configured to analyze the video signal output by the set-top box 10 by using image recognition technology after the on-board box 10 is turned on to determine whether the picture presented by the video signal is obscured by the message window. For example, when there is a non-changing area of the picture presented by the video signal, the message window detecting module 122 can determine that the non-changing area is the message window. The message window here can be an advertisement, a message to notify the status of the system, or an operation menu. The channel switching module 123 is configured to transmit the channel switching signal to the channel received by the set-top box 10 to the reserved video channel when the picture presented by the video signal is not obscured by any of the message windows. The reserved video channel here is a specific channel that the user presets to record. The video module 124 is configured to start recording after the channel received by the set-top box 10 is switched to the reserved video channel, and store the recorded video in the storage device 20. The storage device 20 can be an external or internal storage medium, for example, a hard disk, a flash drive, or a memory card, and is not limited thereto.

Through the joint operation of the above modules, the video recording device 100 can be prevented from transmitting commands to the set-top box 10 when the set-top box 10 has not been turned on, or the video signal is blocked by the message window, and the command cannot be executed. The recording device 100 is caused to record an incorrect picture or program.

In this embodiment, the data processing component 120 further includes a message window elimination module 125. The message window elimination module 125 is configured to transmit the message window cancellation signal by the signal transmission component 110 to eliminate the message window of the masked picture. Through the message window elimination module 125, the video device 100 can be in the video signal When the presented picture is shaded by the message window, the message window is eliminated to prevent the set-top box 10 from executing the command sent by the signal transmitting component 110, causing the video device 100 to record an erroneous picture.

In this embodiment, the power-on determining module 121 can include a video signal determining unit 121a and a set-top box starting unit 121b. The video signal determining unit 121a is configured to determine whether the set-top box 10 outputs a video signal. For example, the video signal determining unit 121a can use the signal processing circuit to amplify the video signal output by the set-top box 10, and then continue to have horizontal and vertical synchronization signals (for example, within 3 seconds) for a certain period of time. It is judged whether or not the set-top box 10 outputs a video signal. The set-top activation unit 121b is configured to transmit a power signal to activate the set-top box 10 when the set-top box 10 does not output a video signal.

Through the above module, the video device 100 can be prevented from blindly transmitting the power signal, and the set-top box 10 is erroneously turned off or on.

In this embodiment, the power-on determining module 121 further includes a set-top box flag detecting unit 121c and a set-top box restarting unit 121d. The set-top box flag detecting unit 121c is configured to analyze whether the picture presented by the video signal output by the set-top box 10 includes the set-top box 10 after the signal transmitting component 110 transmits the power signal to the set-top box 10. Set-top box sign. The so-called set-top box logo is used to identify different types of set-top boxes. Such set-top box logos appear on the boot screen of some set-top boxes, such as Chunghwa Telecom's multimedia video (MOD) machine. box. Therefore, in these types of on-board boxes, according to whether the set-top box flag is present, it can be determined whether the set-top box is successfully started. In addition, the set-top box restarting unit 121d is configured to determine, on the set-top box flag detecting unit 121c, that the picture presented by the video signal does not include the on-board After the set-top box of the cartridge 10 is marked, that is, when the set-top box 10 is not normally turned on, the set-top box activation unit 121b restarts the set-top box 10.

In this embodiment, the power-on determining module 121 further includes an audio signal analyzing unit 121e and a command unit 121f. The audio signal analyzing unit 121e is configured to determine whether the set-top box 10 outputs an audio signal. For example, the audio signal analyzing unit 121e can determine whether the audio signal is muted by whether the amount of digital data of the audio signal exceeds a preset threshold within a certain period of time. If the set-top box 10 has output audio signals and audio signals, it means that the set-top box 10 has been turned on. If the set-top box 10 outputs a video signal but does not output an audio signal, the set-top box 10 may still be in the booting procedure, or the set-top box 10 may present a boot menu or a system notification. Therefore, when the command unit 121f outputs the video signal to the set-top box 10 and does not output the audio signal, the message window detecting module 122 determines whether the picture presented by the video signal is obscured by the message window. If the video signal is blocked by the message window, the video signal output by the set-top box 10 may be notified by the boot menu or the system, and the message window elimination module 125 may be notified to eliminate the masked image. Message window.

In this embodiment, the data processing component 120 further includes an on-screen display (OSD) analysis module 126 and a first resending module 127. The subtitle display analysis module 126 is configured to analyze the subtitle display on the screen presented by the video signal by using an image recognition method to determine whether the channel conversion signal is correctly received. The subtitle display here is the corresponding channel number on the screen presented by the video signal output by the signal box 10 when the signal transmission component 110 transmits the channel switching signal. For example, when the signal transmitting component 110 transmits a channel switching signal to convert the channel to the 55th channel, then The number 55 appears on the screen presented by the frequency signal. By judging whether the subtitle display matches the reserved video channel, the channel switching signal can be prevented from being erroneously received, and the set-top box 10 can be switched to the wrong channel. In addition, when the channel switching signal is erroneously received, the first retransmission module 127 retransmits the channel switching signal to convert the channel received by the set-top box 10 to the reserved video channel.

In this embodiment, the data processing component 120 further includes a channel marker analysis module 128 and a second resend module 129. The channel indicator analysis module 128 is configured to analyze the channel flag on the screen presented by the video signal by using the image recognition method after converting the channel received by the box 10 to determine whether the channel converted by the set-top box 10 is an appointment. Video channel. The so-called channel mark is the mark of the graphic and/or text used by the TV station of each channel. For example, the channel logo may be a graphic and/or text logo of a television station such as TV, CCTV, China Television, and HBO. The second resending module 129 is configured to retransmit the channel switching signal to convert the set-top box 10 when the channel identifier of the channel to which the set-top box 10 is switched is different from the channel identifier of the reserved video channel. Received channels to reserved video channels.

It should be noted that the operation mode of each type of set-top box can be stored in the video recording device 100 in advance, and when the user specifies which type of set-top box is to be recorded, the data processing component 120 can know how to transmit the signal. Element 110 transmits a command to operate the set-top box. For example, the operation method may be to control various infrared codes of the set-top box, but not limited thereto.

In addition, those skilled in the art can clearly understand that the functions of the above mentioned modules can be performed by a central processing unit (or a microprocessor) and a digital signal processor (DSP), together with a few hardware circuits. To achieve. The central processing unit or microprocessor is responsible for sending commands to the digital signal processor, causing the digital signal processor to analyze the image or sound and returning the analysis result to the central processing unit or microprocessor. The central processor or microprocessor then proceeds to the next operation based on the results of the analysis. For example, the functions of the message window detecting module 122, the video signal determining unit 121a, the set-top box flag detecting unit 121c, the audio signal analyzing unit 121e, the caption display analyzing module 126, and the channel flag analyzing module 128 The channel conversion module 123, the video module 124, the message window elimination module 125, the set-top box starting unit 121b, the set-top box restarting unit 121d, the command unit 121f, and the first resending module 127 can be implemented by using a DSP. The function of the second retransmission module 129 can be implemented by a central processing unit or a microprocessor. The function of the power-on judging module 121 can be implemented by using a DSP together with a central processing unit or a microprocessor. It should be noted, however, that the functions of the various modules and units may be implemented only by a central processing unit or a microprocessor, or other similarly capable device or circuit, and are not limited to the above examples.

Furthermore, in some embodiments, the first resending module 127, the second resending module 129, and the channel conversion module 123 may be integrated into one or two modules or units, and in other embodiments. The set-top box starting unit 121b, the set-top box restarting unit 121d, and the command unit 121f may also be integrated into one or two modules or units.

Another aspect of the present invention is to provide a video error prevention method that can be applied to a video recording device to assist the video device to correctly record a television program desired by a user. The video error prevention method can be implemented by using a program, and the program can be stored in an electronic device such as a computer, a mobile phone, a tablet computer or a storage medium of an embedded system, and the program in the storage medium is read through the device. To execute. The storage medium can be a storage medium such as a memory, a hard disk, a CD, or a network database that can be easily considered by those skilled in the art to have the same function.

In the following embodiments of the present invention, the video error protection method is applied to a video recording device, and the video recording device is connected to the set-top box.

FIG. 2 is a flow chart of a video error protection method 200 according to an embodiment of the invention. The video error protection method 200 includes steps 210-250. . In step 210, when the recording time preset by the user arrives, the error prevention program for recording is started.

First, the video device performs step 220, that is, analyzes the video signal and the audio signal output by the set-top box, and determines whether the set-top box is powered on according to whether the video signal and the audio signal are normal program pictures or sounds. If the set-top box has not been turned on yet, the video device repeats step 220 until the set-top box is turned on. In this way, when the set-top box has not been turned on, the recording device transmits a command to the set-top box, and the set-top box incorrectly receives or cannot receive the command.

After the on-board box is turned on, the video device performs step 230, that is, analyzes the video signal output by the set-top box to determine whether the picture presented by the video signal is obscured by the message window. The message window here refers to a still window that automatically appears and covers the screen, and can be an advertisement, a system notification or a user menu. If the picture presented by the video signal is not obscured by any of the message windows, the video device performs step 240, that is, the command signal transmitting component transmits a channel switching signal to convert the channel received by the set-top box to the reserved video channel. Here, the reserved video channel is a specific channel that the user presets to record. The signal transmitting component can be an infrared signal transmitter, a Bluetooth signal transmitter, or an internal or external optical signal device thereof It has a wired or wireless signal transmitter.

Finally, after the channel received by the set-top box is switched to the reserved video channel, the video device performs step 250, that is, the video recording is started, and the recorded video can be stored in a storage device, such as a hard disk, a flash drive or a memory card. , but not limited to this.

By performing the above steps 210-250 through the video recording device, the video recording device 100 can be prevented from sending a command to the set-top box 10 when the set-top box 10 has not been turned on, or the video signal is blocked by the message window, and the command cannot be prevented. Perform a screen or program that causes the video device to record an error.

In the present embodiment, step 220 may include sub-steps 221 and 222 as shown in FIG.

Sub-step 221 is for the video device to determine whether the video signal output by the set-top box is received. If the video signal or the video signal output by the set-top box is not received as a noise, that is, the set-top box has not been turned on, the video apparatus performs sub-step 222. In sub-step 222, the video device signal transmitting component transmits a power signal to activate the set-top box. Then, the video device repeats the sub-step 221 to determine whether the set-top box outputs a video signal. In this way, the video device can be prevented from blindly transmitting the power signal, causing the set-top box to be erroneously turned off or on.

In addition, as shown in FIG. 4, step 220 may further include sub-step 223 in this embodiment. Sub-step 223 is performed after sub-step 222. In sub-step 223, after the signal transmitting component transmits the power signal, the video device analyzes whether the picture presented by the video signal output by the set-top box includes the set-top box flag of the set-top box by using image recognition technology. The so-called set-top box logo here is used to identify the type of set-top box logo, and some of the set-top boxes are opened. Such a set-top box logo appears in the machine screen. Therefore, in some types of set-top boxes, depending on whether the set-top box flag is present, the video recording device can determine whether the set-top box is successfully activated. If the picture presented by the video signal does not include the set-top box logo of the set-top box, that is, when the set-top box is not normally turned on, the video apparatus performs sub-step 222 to transmit the power signal again.

In some other embodiments, step 220 may further include sub-steps 226, 227, and 228 as shown in FIG. In sub-step 226, after the video device outputs the video signal, the video device determines whether the set-top box outputs an audio signal. If the set-top box outputs an audio signal, it means that the set-top box is turned on. If the set-top box outputs a video signal but does not output an audio signal, it may be that the set-top box is still in the boot process, or the set-top box presents a boot menu or a system notification. At this time, the video device performs sub-step 227 to determine whether the picture presented by the video signal is obscured by the message window. If the picture presented by the video signal is obscured by the message window, the video device further performs sub-step 228, and the command signal transmitting component sends a message window cancellation signal to cause the set-top box to eliminate the message window. The video recording device then performs sub-step 226 to determine if the set-top box outputs an audio signal. Alternatively, if the picture is not obscured by the message window, the program of the video device also returns to sub-step 226 to wait for the set-top box to be turned on.

In some other embodiments, the video error protection method 100 further includes step 231, as shown in FIG. If the picture presented by the video signal is obscured by the message window in step 230, the video device performs step 231, that is, the signal transmission component sends a message window cancellation signal to command the set-top box to eliminate the message window to avoid the set-top box. The command sent by the signal transmitting component cannot be executed, or the recording device can be prevented from recording the wrong screen.

In other embodiments, after the signal transmitting component transmits the channel switching signal in step 240, the video recording device may additionally use image recognition technology to determine whether the set-top box correctly converts the channel, whether the converted picture is normal, and/or whether it is converted. The channel is reserved for video channels. Therefore, the video error protection method 100 may further include step 241, step 242, step 243, and step 244. It should be clarified that steps 241, 242, 243, 244 are omitted in the different embodiments in view of actual needs. For example, after the video device performs step 241, step 250 may be directly performed, or after step 241 is performed, step 244 may be performed. And it is obvious that step 241 may also be omitted in some embodiments, so the steps included in the video error protection method 100 are not limited to those depicted in FIG.

After transmitting the channel switching signal, the video device performs step 241 to analyze the subtitle display on the screen presented by the video signal to determine whether the channel switching signal is correctly received. If the channel switching signal is received incorrectly, the video device re-executes step 240 to cause the signal transmitting component to transmit a channel switching signal to convert the channel received by the set-top box to the reserved video channel. The subtitle display is the corresponding channel number on the screen presented by the video signal output by the signal box when the signal transmission component transmits the channel switching signal.

After converting the channel received by the box, the video device performs step 242 to analyze the video signal output by the set-top box to determine whether the picture presented by the video signal is obscured by the message window. If the screen is obscured by the message window, the video device performs step 243 to remove the message window by commanding the set-top box through the signal transmitting component. After the received channel is switched to the reserved video channel, if the video signal output by the set-top box is not displayed by any of the pictures The message window is obscured and video recording begins. By performing steps 242 and 243, it is possible to avoid erroneously recording a message window, such as an advertisement message or a system notification message, on the screen displayed by the video signal after the set-top box is switched to the reserved video channel.

After switching the channel received by the box, the video device performs step 244 to analyze the channel flag on the picture presented by the video signal to determine whether the channel to which the set-top box is switched is a reserved video channel. If the channel identifier of the channel to which the set-top box is switched is different from the channel identifier of the reserved video channel, the video device performs step 240 again to cause the signal transmitting component to repeatedly transmit the channel switching signal to convert the channel received by the set-top box to the reservation. Video channel. The so-called channel logo is a logo for the graphics and/or characters used by the television stations of each channel. For example, the channel logo may be a graphic and/or text logo of a television station such as TV, CCTV, China Television, and HBO.

The video error prevention method 100 can be applied to the video apparatus 100 as in the embodiment depicted in FIG. 1, and the implementation details are similar to those of the embodiment, and thus will not be described herein. It should be noted, however, that the video error proofing method 100 can also be applied to other different video recording devices, and is not limited to the above embodiments.

By applying the above embodiment, it can be determined whether the set-top box has been turned on, whether the screen output by the set-top box is obscured by the message window, and whether the channel is switched to the reserved video channel. Through these judgments and automatically making corresponding actions through the video device, the video device can be correctly recorded to the television program desired by the user.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and retouched without departing from the spirit and scope of the present invention. range This is subject to the definition of the scope of the patent application.

10‧‧‧Machine box

20‧‧‧Storage device

100‧‧‧Video device

110‧‧‧Signal transmission components

120‧‧‧Data processing components

121‧‧‧Power-on judgment module

121a‧‧‧Video Signal Judging Unit

121b‧‧‧Set-top box starter unit

121c‧‧‧Set-top box marker detection unit

121d‧‧‧Machine box restart unit

121e‧‧‧Audio signal analysis unit

121f‧‧‧Command Unit

122‧‧‧Message Window Detection Module

123‧‧‧Channel Conversion Module

124‧‧‧Video Module

125‧‧‧Message Window Elimination Module

126‧‧‧Subtitle display analysis module

127‧‧‧First re-delivery module

128‧‧‧Channel Sign Analysis Module

129‧‧‧Second re-delivery module

200‧‧‧Video Error Prevention Method

210‧‧‧Steps

220‧‧‧Steps

221-228‧‧‧Substeps

231-260‧‧‧Steps

The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt;

FIG. 2 is a flow chart of a video error prevention method according to an embodiment of the invention.

FIG. 3 is a partial flow chart of the video error prevention method according to an embodiment of the invention.

FIG. 4 is a partial flow chart of the video error protection method according to an embodiment of the invention.

FIG. 5 is a partial flow chart of the video error protection method according to an embodiment of the invention.

FIG. 6 is a partial flow chart of the video error protection method according to an embodiment of the invention.

200‧‧‧Video Error Prevention Method

210‧‧‧Steps

220‧‧‧Steps

230‧‧‧Steps

240‧‧‧ steps

250‧‧‧ steps

Claims (15)

A video error prevention method is applied to a video recording device, wherein the video recording device is connected to a set-top box, and the video error-proofing method comprises: (a) judging according to a video signal and an audio signal output by the set-top box (b) after the on-board box is turned on, analyzing the video signal output by the set-top box to determine whether the picture presented by the video signal is obscured by a message window; When the picture presented by the video signal is not obscured by any message window, the life signal transmitting component transmits a channel switching signal to convert the channel received by the set-top box to a reserved video channel; and (d) After the channel received by the set-top box is switched to the reserved video channel, recording starts, and the recorded video is stored in a storage device. The video error protection method of claim 1, wherein the step (a) comprises: determining whether the video signal output by the set-top box is received, and if the video signal output by the set-top box is not received, The signal transmitting component sends a power signal to activate the set-top box. The video error protection method of claim 2, wherein the step (a) further comprises: after transmitting the power signal to the set-top box, analyzing whether the picture presented by the video signal output by the set-top box includes the picture Onboard a set of boxes The box mark; and if the picture presented by the video signal does not include the set-top box mark of the set-top box, it is determined that the set-top box fails to start, and the signal transmitting component is restarted to restart the set-top box. The video error protection method of claim 2, wherein the step (a) further comprises: determining whether the audio signal output by the set-top box is received, and if the video signal is received but the audio signal is not received, Determining whether the picture presented by the video signal is obscured by another message window; and if the picture presented by the video signal is obscured by the other message window, the signal transmitting component sends a message window cancellation signal to enable the picture The set-top box eliminates the other message window. The video error protection method of claim 1, further comprising: when the picture presented by the video signal is obscured by the message window, the signal transmitting component sends a message window cancellation signal to eliminate the set-top box. The message window. The video error protection method of claim 1, further comprising: after the channel received by the set-top box is switched to the reserved video channel, analyzing the video signal output by the set-top box to determine the video signal. Whether the rendered picture is obscured by another message window; When the picture presented by the video signal is obscured by the other message window, the signal transmitting component sends a message window cancellation signal to cause the set-top box to eliminate the other message window. The video error protection method of claim 1, further comprising: analyzing an on-screen display (OSD) on the picture presented by the video signal to determine whether the channel switching signal is correctly received; And if the channel switching signal is received incorrectly, the signal transmitting component repeatedly transmits the channel switching signal to convert the channel received by the set-top box to the reserved video channel. The video error protection method of claim 1, further comprising: after converting the channel received by the set-top box, analyzing a channel identifier on the screen presented by the video signal to determine that the set-top box is converted Whether the channel to which the channel is located is the reserved video channel; and if the channel identifier of the channel to which the set-top box is switched is different from the channel identifier of the reserved video channel, the signal transmitting component repeatedly transmits the channel switching signal to convert the channel The channel received by the set-top box to the reserved video channel. A video recording device includes: a signal transmitting component; and a data processing component, including: a booting determination module for determining whether the set-top box is turned on according to a video signal and an audio signal outputted by a set-top box; a message window detecting module for completing the box on the set After the power is turned on, the video signal outputted by the set-top box is analyzed to determine whether the picture presented by the video signal is obscured by a message window; a channel conversion module is used to display the video signal without any picture When the message window is obscured, the signal transmitting component transmits a channel switching signal to convert the channel received by the set-top box to a reserved video channel; and a video module for receiving the box in the box After the channel is switched to the reserved video channel, the video recording is started, and the recorded video is stored in a storage device. The video processing device of claim 9, wherein the data processing component further comprises: a message window cancellation module for causing the signal transmission component to send a message window cancellation signal to eliminate the message window of the masked picture. The video recording device of claim 10, wherein the power-on determining module comprises: a video signal determining unit for determining whether the set-top box outputs the video signal; and a set-top box starting unit for the machine When the video signal is not outputted by the upper box, the signal transmitting component sends a power signal to activate the set-top box. The video recording device of claim 11, wherein the power-on determining module further comprises: a set-top box flag detecting unit, configured to analyze the machine after the signal transmitting component sends the power signal to the set-top box Whether the picture presented by the video signal output by the box includes a set-top box flag of the set-top box; and a set-top box restarting unit for determining that the video signal is present at the set-top box flag detecting unit After the screen does not include the set-top box logo of the set-top box, the set-top box starting unit restarts the set-top box. The video recording device of claim 11, wherein the power-on determining module further comprises: an audio signal analyzing unit configured to determine whether the set-top box outputs the audio signal; and a command unit for the box on the set When the video signal is output and the audio signal is not output, the message window detection module determines whether the picture presented by the video signal is blocked by another message window, and if the picture presented by the video signal is subjected to the other message If the window is obscured, the message window elimination module is notified to eliminate the message window of the masked picture. The video processing device of claim 10, wherein the data processing component further comprises: a caption display analyzing module configured to analyze a caption display on the screen presented by the video signal to determine whether the channel switching signal is correctly Receiving; and a first resending module for causing the signal transmitting component to resend the channel switching signal to convert the channel received by the set-top box to the appointment when the channel switching signal is erroneously received Video channel. The video recording device of claim 10, wherein the data processing component further comprises: a channel marker analysis module, configured to analyze a channel on the screen displayed by the video cassette after converting the channel received by the set-top box a channel flag to determine whether the channel to which the set-top box is switched is the reserved video channel; and a second re-delivery module for channel identification of the channel to which the set-top box is switched and the reserved video channel When the channel identifier is different, the signal transmitting component retransmits the channel switching signal to convert the channel received by the set-top box to the reserved video channel.