CN102572517A - Bit stream switching method, device, server and system - Google Patents

Bit stream switching method, device, server and system Download PDF

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Publication number
CN102572517A
CN102572517A CN2011104336677A CN201110433667A CN102572517A CN 102572517 A CN102572517 A CN 102572517A CN 2011104336677 A CN2011104336677 A CN 2011104336677A CN 201110433667 A CN201110433667 A CN 201110433667A CN 102572517 A CN102572517 A CN 102572517A
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encoder
group
image
apparatus
main
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CN2011104336677A
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杨大维
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深圳市同洲视讯传媒有限公司
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Publication of CN102572517A publication Critical patent/CN102572517A/en

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Abstract

The invention discloses a bit stream switching method, which comprises the following steps of: receiving master coder image groups and standby coder image groups; timestamping the new master coder image groups and the new standby coder image groups; if a master coder is abnormal, reading each standby coder image group to obtain a timestamp of each standby coder image group; comparing the timestamp of each standby coder image group with a timestamp of the last master coder image group before the abnormity of the master coder; and if the standby coder image group of which the timestamp is the same as the timestamp of the last master coder image group before the abnormity of the master coder is found, replacing the abnormal master coder by using a standby coder, and transmitting the standby coder image groups after the standby coder image group with the same timestamp to a local disk. The invention also discloses a bit stream switching device, a server and a bit stream switching system. When failing, the master coder is seamlessly switched to the standby server, and the addition of hardware is not required, so that cost is decreased.

Description

一种码流切换的方法、装置、服务器和系统 A method for stream switching, device, system, and server

技术领域 FIELD

[0001] 本发明涉及数字电视领域,尤其涉及一种码流切换的方法、装置、服务器和系统。 [0001] The present invention relates to digital television, and more particularly relates to a method for stream switching, device, server and systems. 背景技术 Background technique

[0002] 目前在数字电视领域中,通过编码器将卫星信号转换成IP (Internet Protocol, 网络协议)信号,然后将IP信号数据保存到本地服务器中,完成电视节目的录制。 [0002] In the current field of digital television, the encoder converts satellite signals into IP (Internet Protocol, Internet Protocol) signal, and then save the data to a local server IP signals, the completion of recording TV programs. 在实际录制中,主编码器可能出现故障,这样就需要切换到备编码器继续工作。 In actual recording, the main encoder may be faulty, so that it is necessary to switch the encoder apparatus continues to operate. 一般完成由切换器来完成切换的功能,切换器对主用设备输入的码流进行检测,当检测到所述主用码流异常时, 切换到备用设备输入的备用码流作为输出码流。 It is generally performed by the switch to complete the switching function, a switch input code stream by master device detecting, when detecting the abnormal primary code stream when switching to the backup device backup input code stream as the output stream.

[0003] 但上述技术方案的缺点是,需要切换器作为切换设备,增加了硬件设备,从而增加了成本。 [0003] The disadvantage of the above solutions is that, as the switching device need to switch, the hardware increases, thereby increasing the cost.

发明内容 SUMMARY

[0004] 本发明实施例在于提供一种码流切换的方法、装置、服务器和系统,可以通过服务器对主备数据流的缓存,当主编码器出现故障时,无缝的切换到备编码器的方案,解决了需要增加硬件设备、成本高的问题。 [0004] The present invention is to provide a process stream switching, device, server, and system embodiments, the server may cache the data stream standby, when the primary encoder failure, seamless failover to the encoder programs to address the problem of the need to increase hardware equipment and high cost.

[0005] 本发明是这样实现的,一种码流切换的方法,包括: [0005] The present invention is implemented, a method of switching the code stream, comprising:

[0006] 接收主编码器图像组和备编码器图像组; [0006] The encoder receives the main picture group and a group of pictures the encoder apparatus;

[0007] 给新的主编码器图像组和新的备编码器图像组打时间戳; [0007] encoder to the new primary image group and the new group of pictures encoder apparatus timestamps;

[0008] 如果主编码器异常,读取每一个备编码器图像组,获得所述每一个备编码器图像组的时间戳; [0008] If the master encoder error, a backup encoder reads each image group, the time stamp obtained for each group of pictures encoder apparatus;

[0009] 将所述每一个备编码器图像组的时间戳与主编码器异常前最后一个主编码器图像组的时间戳进行比较; [0009] The time stamp abnormality before the last main image encoder group each image group prepared encoder time stamp comparing the main encoder;

[0010] 如果找到与所述主编码器异常前最后一个主编码器图像组的时间戳相同的备编码器图像组的时间戳,则将备编码器代替所述异常的主编码器,并将该拥有所述相同时间戳的备编码器图像组以后的备编码器图像组送到本地磁盘。 [0010] the same timestamp of the last group of a master encoder time stamp image encoder apparatus set with the main image coder before abnormal if found, the encoder apparatus in place of the abnormality of the encoder main, and the encoder apparatus has the same stamp image group prepared after the encoder disk to a local picture group.

[0011] 本发明的另一目的在于提供一种码流切换的装置,包括: [0011] Another object of the present invention is to provide an apparatus for stream switching, comprising:

[0012] 缓存模块,用于接收主编码器图像组和备编码器图像组,给新的主编码器图像组和新的备编码器图像组打时间戳; [0012] The buffering module, for receiving the master encoder and a backup encoder picture group image group, to the new master encoder picture group and the new group of pictures encoder apparatus timestamps;

[0013] 检测模块,与所述缓存模块相连接,用于检测主编码器是否异常,如果异常,发送异常消息给切换模块; [0013] The detection module, connected to said buffer means for detecting a primary encoder is abnormal, if abnormal, the abnormal message sent to the switching module;

[0014] 切换模块,与所述检测模块相连接,用于接收所述异常消息,读取每一个备编码器图像组,获得所述每一个备编码器图像组的时间戳,将所述每一个备编码器图像组的时间戳与主编码器异常前最后一个主编码器图像组的时间戳进行比较,如果找到与所述主编码器异常前最后一个主编码器图像组的时间戳相同的备编码器图像组的时间戳,则将备编码器代替所述异常的主编码器,并将该拥有所述相同时间戳的备编码器图像组以后的备编码器图像组送到本地磁盘。 [0014] The switching module is connected to the detection module, for receiving the abnormal message, the encoder apparatus reads each image group, the time stamp obtained for each group of pictures encoder apparatus, each of the a timestamp exception before the last group of a main image encoder prepared image encoder timestamp group compared with the master encoder, if the encoder to find the primary abnormality same timestamp before the last main image encoder group Preparation of the encoder time stamp of the image group, in place of the encoder will prepare master encoder anomaly, and has the same time stamp after the backup set of picture encoder apparatus encoder picture group to a local disk.

[0015] 本发明的又一目的在于提供一种包含上述码流切换装置的服务器。 [0015] A further object of the present invention is to provide a server comprising the above-described stream switching device.

[0016] 本发明的再一目的在于提供一种码流切换的系统。 [0016] A further object of the present invention is to provide a system for switching streams.

[0017] 主编码器,用于向服务器发送主编码器数据包; [0017] The main encoder, the encoder for transmitting a data packet to the primary server;

[0018] 备编码器,用于向服务器发送备编码器数据包; [0018] Preparation of the encoder, for transmitting to the server apparatus encoder packet;

[0019] 服务器,用于接收主编码器图像组和备编码器图像组;给新的主编码器图像组和新的备编码器图像组打时间戳;如果主编码器异常,读取每一个备编码器图像组,获得所述每一个备编码器图像组的时间戳;将所述每一个备编码器图像组的时间戳与主编码器异常前最后一个主编码器图像组的时间戳进行比较;如果找到与所述主编码器异常前最后一个主编码器图像组的时间戳相同的备编码器图像组的时间戳,则将备编码器代替所述异常的主编码器,并将该拥有所述相同时间戳的备编码器图像组以后的备编码器图像组送到本地磁盘; [0019] server, for receiving the main and backup encoders picture group encoders image group; encoder to the new primary image group and the new group of pictures encoder apparatus timestamps; if the master encoder error, reading each Preparation encoder picture group, the time stamp obtained for each group of pictures encoder apparatus; timestamp exception before the last main image group of the encoder for each image group prepared encoder time stamp of the main encoder ; if the same timestamp of the last group of a main image encoder time stamp of the main encoder the encoder abnormality Bizen picture group is found, the encoder apparatus in place of the abnormality of the main encoder, and the the encoder apparatus has the same time stamp of the picture group after the encoder apparatus to the local disk image group;

[0020] 本地磁盘,用于接收从所述服务器传来的主编码器图像组或者备编码器图像组。 [0020] the local disk, master encoder for receiving the image transmitted from the server group or the group standby image encoder.

[0021] 实施本发明实施例,通过服务器对主备数据流的缓存,当主编码器出现故障时,无缝的切换到备编码器,可以不需要硬件的添加,降低了成本。 [0021] Example embodiment of the present invention, when the primary encoder failure, seamless handover by standby server cache the data stream to the encoder apparatus, may not require added hardware, reducing the cost.

附图说明 BRIEF DESCRIPTION

[0022] 为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。 [0022] In order to more clearly illustrate the technical solutions in the embodiments or the prior art embodiment of the present invention, briefly introduced hereinafter, embodiments are described below in the accompanying drawings or described in the prior art needed to be used in describing the embodiments the drawings are only some embodiments of the present invention, those of ordinary skill in the art is concerned, without any creative effort, and can obtain other drawings based on these drawings.

[0023] 图1是本发明实施例的一种码流切换的方法流程示意图; [0023] FIG. 1 is a schematic diagram of an embodiment of the present invention, the code stream flow switching method;

[0024] 图2是本发明一种码流切换的方法的另一实施例的流程示意图; [0024] FIG. 2 is a flow diagram of another embodiment of a method of switching streams embodiment of the present invention;

[0025] 图3是本发明实施例的一种码流切换的装置的结构示意图; [0025] FIG. 3 is a schematic structural diagram of an apparatus embodiment of the stream switching embodiment of the present invention;

[0026] 图4是本发明一种码流切换的装置的另一实施例的结构示意图; [0026] FIG. 4 is a schematic structural diagram of another apparatus according to the present invention, a stream switch embodiment;

[0027] 图5是本发明实施例的一种码流切换的系统结构示意图。 [0027] FIG. 5 is a schematic structure of a system stream switching embodiment of the present invention.

具体实施方式 Detailed ways

[0028] 为了使本发明所要解决的技术问题、技术方案及有益效果更加清楚明白,以下结合附图及实施例,对本发明进行进一步详细说明。 [0028] In order to make the technical problem to be solved by the present invention, technical solutions and beneficial effects clearer, the accompanying drawings and the following embodiments, the present invention will be further described in detail.

[0029] 请参阅图1示出的本发明实施例的一种码流切换的方法流程示意图,包括: [0029] Referring to FIG. 1 embodiment of the method of switching stream schematic flow diagram of an embodiment of the present invention is shown, comprising:

[0030] 步骤SlOl :接收主编码器GOP (Group of Pictures,图像组)和备编码器G0P。 [0030] Step SlOl: receiving a master encoder GOP (Group of Pictures, image group) and the backup encoder G0P.

[0031] 具体的,接收主编码器GOP和备编码器GOP到缓存中。 [0031] Specifically, receiving a primary and a backup encoder encode GOP GOP into the cache.

[0032] 步骤S102 :给新的主编码器GOP和新的备编码器GOP打时间戳。 [0032] the step S102: the encoder to the new primary and new GOP GOP encoder apparatus timestamping.

[0033] 具体的,在缓存中,给新的主编码器GOP和新的备编码器GOP打时间戳。 [0033] Specifically, in the cache, to the new primary encode GOP and GOP encoder new backup timestamps.

[0034] 步骤S103 :如果主编码器异常,读取每一个备编码器G0P,获得每个备编码器GOP 的时间戳。 [0034] Step S103: If the main encoder error, a backup encoder reads each G0P, obtain Preparation encoder time stamp of each GOP.

[0035] 具体的,当一定时间内(比如4秒内),缓存接收不到从主编码器发送来的主编码器G0P,则判断主编码器异常。 [0035] Specifically, when a certain period of time (such as within 4 seconds), the cache can not receive transmitted from the main encoder main encoder G0P, main encoder is judged abnormal. [0036] 步骤S104 :将每个备编码器GOP的时间戳与主编码器异常前最后一个主编码器GOP的时间戳进行比较。 [0036] Step S104: Each time stamp of the GOP encoder apparatus main encoding a primary abnormality before the last GOP, the encoder compares the timestamp.

[0037] 步骤S105 :如果找到与主编码器异常前最后一个主编码器GOP的时间戳相同的备编码器GOP的时间戳,则将备编码器代替所述异常的主编码器,并将该拥有相同时间戳的备编码器GOP以后的备编码器GOP送到本地磁盘。 [0037] Step S105: a timestamp of the last GOP of the same master encoder time stamp of the GOP encoder apparatus main encoding before abnormality if found, the encoder apparatus in place of the abnormality of the encoder main, and the We have the same time stamp after preparation encode GOP GOP encoder apparatus to a local disk.

[0038] 实施上述实施例,通过服务器对主备数据流的缓存,当主编码器出现故障时,无缝的切换到备编码器,可以不需要硬件的添加,降低了成本。 [0038] The above-described embodiment, when the primary encoder failure, seamless switching of the master cache backup data stream to the backup server through the encoder may not be required to add the hardware, reducing the cost.

[0039] 下面结合图2示出的本发明一种码流切换方法的另一实施例的流程示意图,包括: Another schematic flow diagram of the present invention [0039] below with reference to FIG. 2 shows a stream switching method of the embodiment, comprising:

[0040] 步骤S201 :服务器接收主编码器和备编码器发送的两路数据包,将主编码器数据包和备编码器数据包分别存入缓存中。 [0040] Step S201: two-way packet data server receives the master encoder and transmitted by the encoder apparatus, the encoder packet and a primary standby data packets are stored in the encoder cache.

[0041] 步骤S202 :服务器查找接收到的主编码器数据包和备编码器数据包中是否含有GOP头,如果没有查找到GOP头,进入步骤S203 ;如果查找到GOP头,进入步骤S204。 [0041] Step S202: the server searches the received data packets and main encoder apparatus encoder packet if it contains a GOP header, a GOP header if not found, flow proceeds to step S203; if a GOP header lookup proceeds to step S204.

[0042] 具体的,一个GOP是一组连续的画面,信息量较大,有时候一个GOP会分成多个数据包传送,区分是否为一个新的GOP的方式是查找是否有GOP头,当GOP头出现时,代表上一个GOP的终结和下一个GOP的开始。 [0042] Specifically, one GOP is a group of consecutive pictures, a large amount of information, and sometimes a GOP will be divided into a plurality of data packet transfer, to distinguish whether the GOP is a new way to find whether there is a GOP header, when the GOP when the head appeared, the beginning of a termination of the GOP representatives and the next GOP.

[0043] 步骤S203 :把没有GOP头的数据包写到上一个GOP的缓存中。 [0043] Step S203: the GOP head packet is not written to a cache GOP.

[0044] 具体的,没有GOP头的数据包代表的上一个GOP还没有传送完毕,则没有GOP头的数据包实际上是上一个GOP的一部分。 [0044] Specifically, the packet data is not representative of a GOP header of a GOP has not been completely transmitted, no GOP header packet is actually a part of the GOP. 具体的,将没有GOP头的主编码器数据包写到上一个主编码器的GOP的缓存中,将没有GOP头的备编码器数据包写到上一个备编码器的GOP 的缓存中。 Specifically, there will be no GOP header is written to the primary cache encoder packet on a main GOP encoder, there will be no GOP header is written to the backup encoder packet buffer on a GOP encoder apparatus.

[0045] 步骤S204 :把含有GOP头的数据包写到新的GOP缓存中,并将已经完成的上一个主编码器的GOP缓存数据送到本地磁盘。 [0045] Step S204: the data packet contains the GOP header of the GOP is written to the new cache, the cache data on a GOP master encoder has been completed and sent to the local disk.

[0046] 具体的,含有GOP头的数据包代表上一个GOP已经传送完毕,该数据包是新的GOP 的开始,将该数据包写到新的GOP缓存中。 [0046] Specifically, the data packet represents an GOP one GOP head data have been transferred, the data packet is a new beginning of GOP, the packet buffer write new GOP. 并且当新的主编码器的GOP开始时,就将上一个已经接收完成的主编码器的GOP缓存数据送到本地磁盘。 And when a new master encoder GOP start, will be cached data on a GOP has been completely received master encoder to a local disk. 即,在主编码器正常工作时,在缓存中始终保持只有一个主编码器的G0P。 That is, when the main encoder to work, remain in the cache only a master encoder G0P. 而备编码器的缓存中可能保存多个最新收到的备编码器的GOP。 The cache backup encoder may save multiple backup encoder recently received the GOP.

[0047] 步骤S205 :给新的GOP打上时间戳。 [0047] Step S205: time-stamped to the new GOP.

[0048] 具体的,给缓存中新的主编码器GOP打上时间戳,给缓存中新的备编码器GOP打上时间戳。 [0048] Specifically, to the new master cache encode GOP time stamped for the new cache Preparation encode GOP to timestamp.

[0049] 步骤S206 :检测主编码器是否有异常,有异常,进入步骤S207 ;没有异常,返回步骤S202。 [0049] Step S206: detecting whether the main encoder abnormal, abnormal, proceeds to step S207; no abnormality, return to step S202.

[0050] 具体的,在一定时间内,比如4秒内,缓存接收不到主编码器发送的主编码器G0P, 就认为主编码器有异常。 [0050] Specifically, in a certain period of time, such as within 4 seconds, the cache can not receive a master encoder G0P encoder main transmission, the main encoder considered abnormal.

[0051] 步骤S207 :读取缓存中的每一个备编码器G0P,获得每个备编码器GOP的时间戳。 [0051] Step S207: reading each cache G0P encoder apparatus, the encoder apparatus is obtained each time stamp of the GOP.

[0052] 具体的,读取备编码器的缓冲中缓存的每一个备编码器,并获得每个备编码器GOP 的时间戳。 [0052] Specifically, the encoder buffer is read in the buffer prepared for each encoder apparatus, and obtains the time stamp of each GOP encoder apparatus.

[0053] 步骤S208 :获得主编码器异常前缓存中最后一个主编码器GOP的时间戳,将步骤 [0053] Step S208: obtaining the time stamp before the abnormal primary encoder buffer in the last GOP of the main encoder, the step of

6S207获得的每个备编码器GOP的时间戳分别与该主编码器GOP时间戳进行比较,如果找到相同的备编码器GOP的时间戳,进入步骤S209。 Preparation of each GOP encoder 6S207 obtained were compared with the time stamp of the GOP primary encoder time stamp, the time stamp if the same preparation encode GOP is found, the process proceeds to step S209.

[0054] 步骤S209 :将备编码器代替所述异常的主编码器,并将该相同的备编码器GOP以后的备编码器GOP的缓存数据送到本地磁盘。 [0054] Step S209: the encoder apparatus in place of the primary encoder abnormality, and the same preparation after preparation encode GOP GOP encoder disk to a local cache data.

[0055] 具体的,本地磁盘后续接到的缓存数据为备编码器GOP的缓存数据,而且备编码器代替异常的主编码器继续将后续的图像组送到本地磁盘,这样就完成了主编码器与备编码器之间的切换。 [0055] Specifically, subsequent to the local disk cache encode GOP data backup cache data, in place of the encoder and the standby main encoder abnormality continues to a subsequent set of images to a local disk, thus completing the main encoding switching between the encoder and backup.

[0056] 实施上述实施例,通过服务器对主备数据流的缓存,当主编码器出现故障时,无缝的切换到备编码器,可以不需要硬件的添加,降低了成本,并且自动检测故障,当发现故障时可以自动切换,避免机器故障问题导致节目无法观看,并且通过GOP来定位故障,这样准确定位图像,精度高。 [0056] The above-described embodiment, data cache standby stream, when the primary encoder failure, seamless failover to the encoder, may not require added hardware, reducing the cost, and the server automatically detects the fault, It can automatically switch when failure is found to avoid problems resulting in mechanical failure can not watch the program, and to locate the fault by the GOP, so that accurate positioning of the image, high accuracy.

[0057] 下面结合图3示出的本发明实施例的一种码流切换的装置示意图,进一步详细说明本发明实施例一种码流切换的装置的结构。 Schematic diagram of a stream switching apparatus embodiment of the present invention [0057] below with reference to FIG. 3 shows a further structure of the device code stream switching an embodiment of the present invention is described in detail.

[0058] 缓存模块301,用于接收主编码器GOP和备编码器G0P,给新的主编码器GOP和新的备编码器GOP打时间戳。 [0058] The cache module 301, for receiving the main and backup encode GOP encoder G0P, to the new primary encode GOP and GOP encoder new backup timestamps.

[0059] 检测模块302,与缓存模块301相连接,用于检测主编码器是否异常,如果异常,发送异常消息给切换模块303。 [0059] The detection module 302, is connected to the cache module 301, for detecting the master encoder is abnormal, if abnormal, the abnormal message sent to the switching module 303.

[0060] 切换模块303,与检测模块302相连接,用于接收该异常消息,读取每一个备编码器G0P,获得每个备编码器GOP的时间戳,将每个备编码器GOP的时间戳与主编码器异常前最后一个主编码器GOP的时间戳进行比较,如果找到与主编码器异常前最后一个主编码器GOP的时间戳相同的备编码器GOP的时间戳,则备编码器代替所述异常的主编码器,并将该拥有相同时间戳的备编码器GOP以后的备编码器GOP送到本地磁盘。 [0060] The switching module 303, connected to the detection module 302, for receiving the abnormal message, reading each encoder apparatus G0P, obtain Preparation encoder time stamp of each GOP, each GOP encoder standby time timestamp main encoding a primary abnormality before the last GOP encoder compares the time stamp, if the timestamp of the last GOP of a same master encoder time stamp found GOP encoder apparatus main encoder error before the prepare encoder in place of the primary encoder anomaly, and has the same time stamp after preparation encode GOP GOP encoder apparatus to a local disk.

[0061] 实施上述实施例,通过服务器对主备数据流的缓存,当主编码器出现故障时,无缝的切换到备编码器,可以不需要硬件的添加,降低了成本。 [0061] The above-described embodiment, when the primary encoder failure, seamless switching of the master cache backup data stream to the backup server through the encoder may not be required to add the hardware, reducing the cost.

[0062] 下面结合图4示出的本发明实施例的一种码流切换的装置另一结构示意图,进一步详细说明本发明实施例该码流切换的装置的结构。 Another schematic structural embodiment of the apparatus of the present invention embodiment [0062] below with reference to FIG. 4 shows a code stream switching, the apparatus further configuration example of stream switching the embodiment of the present invention is described in detail.

[0063] 接收子模块401,用于接收主编码器数据包和备编码器数据包。 [0063] The receiving submodule 401, configured to receive a master encoder and a backup encoder packet packet.

[0064] 具体的,用于接收从主编码器上发来的主编码器数据包和从备编码器上发来的备编码器数据包。 [0064] Specifically, for receiving the master encoder master encoder sent from the packet and sent by the encoder apparatus Prepared encoder packet.

[0065] 判断GOP子模块402,与接收子模块401相连,用于判断接收到的主编码器数据包和备编码器数据包中是否含有GOP头,如果该数据包没有GOP头,发送该数据包至上一个GOP缓存子模块403 ;如果该数据包含有GOP头,发送该数据包至新的GOP缓存子模块404。 [0065] GOP determination sub-module 402 connected with the receiving sub-module 401, configured to determine received main packet encoder and a backup encoder packet if it contains the GOP header, the data packet if no GOP header, transmitting the data a packet-oriented sub-GOP buffer module 403; new GOP if the data buffer sub-module includes a GOP header 404 to send the packet.

[0066] 具体的,一个GOP是一组连续的画面,信息量较大,有时候一个GOP会分成多个数据包传送,区分一个GOP的方式是查找是否有GOP头,当GOP头出现时,代表上一个GOP的终结和下一个GOP的开始。 [0066] Specifically, one GOP is a group of consecutive pictures, a large amount of information, and sometimes a GOP will be divided into a plurality of packet delivery, is a way to distinguish one GOP find whether there is a GOP header, a GOP header occurs when, on behalf of a start end of the GOP and the following GOP.

[0067] 上一个GOP缓存子模块403,用于接收从判断GOP子模块402发送的不含有GOP头的数据包,如果是主编码器数据包则写入上一个主编码器GOP缓存内,如果是备编码器数据包则写入上一个备编码器GOP缓存内。 [0067] one sub-GOP buffer module 403, for receiving from the determination sub-module packet GOP GOP header does not contain the transmission 402, if a master encoder packet is written in a main GOP encoder cache, if is prepared by the encoder packet is written on a standby buffer within the encoder GOP.

[0068] 具体的,没有GOP头的数据包代表的上一个GOP还没有传送完毕,则没有GOP头的数据包实际上是上一个GOP的一部分。 [0068] Specifically, the packet data is not representative of a GOP header of a GOP has not been completely transmitted, no GOP header packet is actually a part of the GOP. 则将没有GOP头的主编码器数据包写到上一个主编码器的GOP的缓存中,将没有GOP头的备编码器数据包写到上一个备编码器的GOP的缓存中。 There will be no GOP header is written to the primary cache encoder packet on a main GOP encoder, there will be no GOP header is written to the backup encoder packet buffer on a GOP encoder apparatus.

[0069] 新的GOP缓存子模块404,用于接收从判断GOP子模块402发送的含有GOP头的数据包,如果是主编码器数据包则写入新的主编码器GOP缓存内,如果是备编码器数据包则写入新的备编码器GOP缓存内,并将已经完成的上一个主编码器的GOP缓存数据送到本地磁盘,以及将已经完成的上一个主编码器图像组的时间戳发送给检测模块406。 [0069] The new GOP cache sub-module 404, for receiving sub-module 402 determines GOP data packet containing a GOP header, and if a master encoder packet is written into the new master cache encode GOP, if Preparation of the encoder packet is written into the new backup cache encode GOP and GOP data in a cache master encoder has been completed to the time of the local disk and the encoder on one main picture group has been completed the stamp is sent to the detection module 406.

[0070] 具体的,含有GOP头的数据包代表上一个GOP已经传送完毕,该数据包是新的GOP 的开始,将该数据包写到新的GOP缓存中。 [0070] Specifically, the data packet represents an GOP one GOP head data have been transferred, the data packet is a new beginning of GOP, the packet buffer write new GOP. 并且当新的主编码器的GOP开始时,就将上一个已经接收完成的主编码器的GOP缓存数据送到本地磁盘。 And when a new master encoder GOP start, will be cached data on a GOP has been completely received master encoder to a local disk. 即,在主编码器正常工作时,在缓存中始终保持只有一个主编码器的G0P。 That is, when the main encoder to work, remain in the cache only a master encoder G0P.

[0071] 时间戳子模块405,与新的GOP缓存子模块404相连接,用于给新的主编码器GOP 和新的备编码器GOP打上时间戳。 [0071] timestamp sub-module 405, and a new sub-GOP buffer module 404 is connected to the new master for the encoder and the new GOP GOP encoder apparatus to timestamp.

[0072] 检测模块406,与新的GOP缓存子模块404相连接,检测主编码器是否异常,如果异常发送异常消息给获取子模块407。 [0072] The detection module 406, and a new sub-GOP buffer 404 is connected to the module, the primary encoder detector is abnormal, if the abnormality sends an exception message to the obtaining sub-module 407.

[0073] 具体的,在一定时间内,比如4秒内,收不到缓存传来的主编码器G0P,就认为主编 [0073] Specifically, in a certain period of time, such as within 4 seconds, the main receive buffer coming encoder G0P, editor considers

码器有异常。 Decoder abnormal.

[0074] 获取子模块407,用于接收检测模块406发送的异常消息,读取每一个备编码器G0P,获得每个备编码器GOP的时间戳。 [0074] The obtaining sub-module 407, the detection module 406 for receiving a transmitted message exception, each reading apparatus encoder G0P, obtain Preparation encoder time stamp of each GOP.

[0075] 比较子模块408,与获取子模块407相连接,用于将每个备编码器GOP的时间戳与主编码器异常前最后一个主编码器GOP的时间戳进行比较,如果找到与主编码器异常前最后一个主编码器GOP的时间戳相同的备编码器GOP的时间戳,发送消息给切换子模块409。 [0075] The comparison sub-module 408, 407 is connected to the obtaining sub-module, a time stamp for each GOP encoder apparatus main encoder time stamp before the last abnormal GOP is a master encoder is compared, and if found the main encoder error before the last GOP of a same master encoder time stamp of the GOP encoder apparatus timestamp, transmits the message to the switching sub-module 409.

[0076] 切换子模块409,用于接收发送消息,将备编码器代替所述异常的主编码器,并将该拥有相同时间戳的备编码器GOP以后的备编码器GOP送到本地磁盘。 [0076] The switching sub-module 409, for receiving the transmitted message, the encoder apparatus in place of the abnormality of the main encoder, and the encoder apparatus has a later time stamp of the same GOP GOP encoder apparatus to a local disk.

[0077] 具体的,本地磁盘后续接到的缓存数据为备编码器GOP的缓存数据,这样就完成了主编码器与备编码器之间的切换。 [0077] Specifically, subsequent to the local disk cache data as backup data encoder buffer GOP, thus completing the switching between the master encoder and the encoder apparatus.

[0078] 实施上述实施例,通过服务器对主备数据流的缓存,当主编码器出现故障时,无缝的切换到备编码器,可以不需要硬件的添加,降低了成本,并且自动检测故障,当发现故障时可以自动切换,避免机器故障问题导致节目无法观看,并且通过GOP来定位故障,这样准确定位图像,精度高。 [0078] The above-described embodiment, data cache standby stream, when the primary encoder failure, seamless failover to the encoder, may not require added hardware, reducing the cost, and the server automatically detects the fault, It can automatically switch when failure is found to avoid problems resulting in mechanical failure can not watch the program, and to locate the fault by the GOP, so that accurate positioning of the image, high accuracy.

[0079] 此外,本发明还公开了一种包含上述实施例所公开的一种码流切换的装置的服务 [0079] Further, the present invention also discloses an apparatus comprising a service switching stream above embodiments of the disclosed embodiments

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[0080] 下面结合图5示出的本发明实施例一种码流切换的系统示意图,进一步详细说明本发明实施例一种码流切换的系统,包括主编码器501,备编码器502,服务器503和本地磁盘504 : System diagram embodiment of a stream switching embodiment of the present invention [0080] below with reference to FIG. 5 shows a further detailed embodiment of a system for switching streams embodiment of the present invention, comprises a main encoder 501, the encoder apparatus 502, the server 503 and 504 local disk:

[0081] 主编码器501,用于向服务器503发送主编码器数据包; [0081] The main encoder 501, the encoder for transmitting a data packet to the primary server 503;

[0082] 备编码器502,用于向服务器503发送备编码器数据包; [0082] Preparation of the encoder 502, the encoder for transmitting a data packet to the backup server 503;

[0083] 服务器503,用于接收主编码器图像组和备编码器图像组;给新的主编码器图像组和新的备编码器图像组打时间戳;如果主编码器异常,读取每一个备编码器图像组,获得所述每一个备编码器图像组的时间戳;将所述每一个备编码器图像组的时间戳与主编码器异常前最后一个主编码器图像组的时间戳进行比较;如果找到与所述主编码器异常前最后一个主编码器图像组的时间戳相同的备编码器图像组的时间戳,则将备编码器代替所述异常的主编码器,并将该拥有所述相同时间戳的备编码器图像组以后的备编码器图像组送到本地磁盘504。 [0083] server 503, an image encoder for receiving the main and backup encoders group picture group; if the master encoder error, reads each; to the new primary encoder picture group and the new group of pictures encoder apparatus timestamps Preparation of a set of image encoder, the time stamp obtained for each group of pictures encoder apparatus; timestamp exception before the last main image group of the encoder for each picture encoder apparatus set timestamp master encoder comparing; timestamp of the last main same encoder time stamp backup image group set with the image encoder of the master encoder before abnormal if found, the encoder apparatus in place of the abnormality of the encoder main, and the apparatus has an encoder time stamp of the image group prepared after the same picture group encoder 504 to a local disk.

[0084] 本地磁盘504,用于接收从服务器503传来的主编码器图像组或者备编码器图像组。 [0084] The local disk 504, for receiving the primary server 503 transmitted from the encoder apparatus or the encoder picture group picture group.

[0085] 实施上述实施例,通过服务器对主备数据流的缓存,当主编码器出现故障时,无缝的切换到备编码器,可以不需要硬件的添加,降低了成本。 [0085] The above-described embodiment, when the primary encoder failure, seamless switching of the master cache backup data stream to the backup server through the encoder may not be required to add the hardware, reducing the cost.

[0086] 需要说明的是,通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到本发明可借助软件加必需的硬件平台的方式来实现,当然也可以全部通过硬件来实施。 [0086] Incidentally, the above description of embodiments, those skilled in the art may clearly understand that the present invention may be implemented by software plus a necessary hardware platform, and definitely may also be implemented by hardware. 基于这样的理解,本发明的技术方案对背景技术做出贡献的全部或者部分可以以软件产品的形式体现出来,该计算机软件产品可以存储在存储介质中,如ROM/RAM、磁碟、光盘等,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例或者实施例的某些部分所述的方法。 Based on such understanding, the technical solutions of the present invention contributes to the prior art all or part may be embodied in a software product, which computer software product may be stored in a storage medium such as ROM / RAM, magnetic disk, optical disk, etc. , including several instructions for instructing a computer device (may be a personal computer, a server, or network device) to perform various method embodiments or some parts of the embodiment of the present invention.

[0087] 以上所揭露的仅为本发明实施例中的较佳实施例而已,当然不能以此来限定本发明之权利范围,因此依本发明权利要求所作的等同变化,仍属本发明所涵盖的范围。 [0087] equivalent variations only preferred embodiments of the present invention, in one embodiment only, but not intended to limit the scope of the present invention, according to the claims made by the claimed invention disclosed above, the present invention still encompassed It ranges.

Claims (10)

1. 一种码流切换的方法,其特征在于,包括:接收主编码器图像组和备编码器图像组;给新的主编码器图像组和新的备编码器图像组打时间戳;如果主编码器异常,读取每一个备编码器图像组,获得所述每一个备编码器图像组的时间戳;将所述每一个备编码器图像组的时间戳与主编码器异常前最后一个主编码器图像组的时间戳进行比较;如果找到与所述主编码器异常前最后一个主编码器图像组的时间戳相同的备编码器图像组的时间戳,则将备编码器代替所述异常的主编码器,并将该拥有所述相同时间戳的备编码器图像组以后的备编码器图像组送到本地磁盘。 A method for stream switching, wherein, comprising: receiving a primary and a backup encoder picture group encoders image group; encoder to the new primary image group and the new group of pictures encoder apparatus timestamps; if main encoder error, a backup encoder reads each image group, the time stamp obtained for each group of pictures encoder apparatus; each of the picture group encoder apparatus main encoding a time stamp abnormality before a final main encoder time stamp comparing picture group; the same timestamp encoder stamp image group prepared a master encoder last image set with the front main encoder abnormality if found, in place of the encoder apparatus abnormality master encoder, and has the same time stamp after the backup set of picture encoder apparatus encoder picture group to a local disk.
2.如权利要求1所述的方法,其特征在于,所述接收主编码器图像组和备编码器图像组包括:接收主编码器发送的主编码器数据包和备编码器发送的备编码器数据包;查找接收到的所述主编码器数据包和所述备编码器数据包中是否含有图像组头,如果所述数据包没有查找到图像组头,把所述数据包写到上一个图像组的缓存中;如果所述数据包查找到图像组头,把所述数据包写到新的图像组缓存中。 2. The method according to claim 1, wherein said encoder receives the main picture group and a group of pictures encoder apparatus comprising: a coding apparatus receives the main encoder sent from the host apparatus and the encoder packet sent from the encoder data packet; receiving find the main data packet and the encoder apparatus encoder packet if it contains a GOP header, if the data packet does not find a GOP header, the data packet is written on the a group of pictures in the buffer; if the data packet to find a GOP header, the data packet is written to the new image group cache.
3.如权利要求2所述的方法,其特征在于,所述如果所述数据包查找到图像组头,把所述数据包写到新的图像组缓存中还包括:将已经完成的上一个主编码器图像组缓存数据送到本地磁盘。 3. The method according to claim 2, wherein, if the image to find the packet group header, the data packet is written to the new image group buffer further comprises: one of which has been completed main encoder picture group data to the local disk cache.
4.如权利要求1至3任意一项所述的方法,其特征在于,所述主编码器异常包括:在预设的时间内收不到主编码器的图像组。 4. The method of any one of claims 1 to 3, characterized in that the main exception encoder comprising: a set of primary receive image encoder within a predetermined time.
5. 一种码流切换的装置,其特征在于,包括:缓存模块,用于接收主编码器图像组和备编码器图像组,给新的主编码器图像组和新的备编码器图像组打时间戳;检测模块,与所述缓存模块相连接,用于检测主编码器是否异常,如果异常,发送异常消息给切换模块;切换模块,与所述检测模块相连接,用于接收所述异常消息,读取每一个备编码器图像组,获得所述每一个备编码器图像组的时间戳,将所述每一个备编码器图像组的时间戳与主编码器异常前最后一个主编码器图像组的时间戳进行比较,如果找到与所述主编码器异常前最后一个主编码器图像组的时间戳相同的备编码器图像组的时间戳,则将备编码器代替所述异常的主编码器,并将该拥有所述相同时间戳的备编码器图像组以后的备编码器图像组送到本地磁盘。 A code stream switching apparatus, characterized by comprising: a buffer module configured to receive a main image encoder and a backup encoder group image group, to the new master encoder picture group and the new group of pictures encoder apparatus timestamping; detection module, connected to said buffer means for detecting a primary encoder is abnormal, if abnormal, the abnormal message sent to the switching module; switching module, connected to said detecting module, for receiving the abnormal message, a backup encoder reads each image group, the time stamp obtained for each group of pictures encoder apparatus, the encoder apparatus each image group and the main encoder time stamp abnormality before the last main encoding a time stamp comparing an image group, the same timestamp of the last group of a master encoder time stamp image encoder apparatus set with the main image coder before abnormal if found, the encoder apparatus in place of the abnormality primary encoder, and the encoder apparatus has a later time stamp of the same picture group encoder apparatus picture group to a local disk.
6.如权利要求5所述的装置,其特征在于,所述缓存模块具体包括:接收子模块,用于接收主编码器数据包和备编码器数据包;判断图像组子模块,与所述接收子模块相连,用于判断接收到的所述主编码器数据包和所述备编码器数据包中是否含有图像组头,如果数据包中没有图像组头,发送所述数据包至上一个图像组缓存子模块;如果数据包含有图像组头,发送所述数据包至新的图像组缓存子模块;上一个图像组缓存子模块,用于接收从所述判断图像组子模块发送的不含有图像组头的数据包,如果是主编码器数据包则写入上一个主编码器图像组缓存内,如果是备编码器数据包则写入上一个备编码器图像组缓存内;新的图像组缓存子模块,用于接收从所述判断图像组子模块发送的含有图像组头的数据包,如果是主编码器数据包则写入新的主编码器图像 6. The apparatus according to claim 5, wherein the caching module comprises: a receiving sub-module, for receiving the main and backup encoder packet encoder packet; sub-module determines whether the image group, and the receiving sub-module is connected, for determining a received image of said main encoder packet and said standby encoder packet if it contains a GOP header, if no image data packet group header, the packet-oriented transmission sub-group cache module; if the data includes a GOP header, transmitting the packet to the new image buffer sub-module group; a group of image sub-buffer means for receiving from the determination module does not contain a sub-group of transmission of the image a GOP header packet, if the packet is the master encoder is written into one image group master encoder buffer, if it is prepared by the encoder packet is written on a standby picture group within the encoder buffer; new image group caching sub-module, for receiving said data packet comprising determining a GOP header set of sub-images sent by the module, if it is a master encoder packet is written to a new master image encoder 缓存内,如果是备编码器数据包则写入新的备编码器图像组缓存内;时间戳子模块,与所述新的图像组缓存子模块相连接,用于给所述新的主编码器图像组和所述新的备编码器图像组打上时间戳。 The buffer, if it is prepared by the encoder packet is written into the new backup image encoder buffer group; timestamp sub-module, connected with the new image set cache sub-module configured to encode the new primary an image group and the new group of picture encoder apparatus to timestamp.
7.如权利要求5所述的装置,其特征在于,所述切换模块具体包括:获取子模块,用于接收所述检测模块发送的异常消息,读取每一个备编码器图像组,获得所述每一个备编码器图像组的时间戳;比较子模块,与所述获取子模块相连接,用于将所述每一个备编码器图像组的时间戳与主编码器异常前最后一个主编码器图像组的时间戳进行比较,如果找到与所述主编码器异常前最后一个主编码器图像组的时间戳相同的备编码器图像组的时间戳,发送消息给切换子模块;切换子模块,用于接收所述发送消息,将备编码器代替所述异常的主编码器,并将拥有所述相同时间戳的备编码器图像组以后的备编码器图像组送到本地磁盘。 7. The apparatus according to claim 5, wherein said switching module comprises: an obtaining submodule, for receiving the abnormality detection module sends a message, the encoder apparatus reads each image group, to obtain the said one standby encoder time stamp each group of pictures; comparison sub-module, connected to the obtaining sub-module, for each of the image encoder apparatus set timestamp main encoder encoding the last main exception before time stamp comparing an image group, the same if the timestamp of the last image of a group of master encoder apparatus encoder time stamp found in the image group with the main exception encoder before, sending a message to the switching sub-module; switching submodule , for receiving the transmitted message, the encoder apparatus in place of the abnormality of the main encoder, and the encoder apparatus has a later time stamp of the same picture group encoder apparatus picture group to a local disk.
8.如权利要求6所述的装置,其特征在于,所述新的图像组缓存子模块还用于将已经完成的上一个主编码器图像组缓存数据送到本地磁盘,以及将已经完成的上一个主编码器图像组的时间戳发送给所述检测模块。 8. The apparatus according to claim 6, wherein said new set of image sub-module is further configured to cache on a master encoder buffer image data set has been completed is sent to the local disk, and the completed a master encoder time stamp is sent to the image group detecting module.
9. 一种服务器,其特征在于,包括如权利要求5-8任意一项所述的码流切换的装置。 9. A server, comprising means as claimed in claim 5-8 code stream according to any one of handover.
10. 一种码流切换的系统,其特征在于,包括主编码器,用于向服务器发送主编码器数据包;备编码器,用于向服务器发送备编码器数据包;服务器,用于接收主编码器图像组和备编码器图像组;给新的主编码器图像组和新的备编码器图像组打时间戳;如果主编码器异常,读取每一个备编码器图像组,获得所述每一个备编码器图像组的时间戳;将所述每一个备编码器图像组的时间戳与主编码器异常前最后一个主编码器图像组的时间戳进行比较;如果找到与所述主编码器异常前最后一个主编码器图像组的时间戳相同的备编码器图像组的时间戳,则将备编码器代替所述异常的主编码器,并将该拥有所述相同时间戳的备编码器图像组以后的备编码器图像组送到本地磁盘;本地磁盘,用于接收从所述服务器传来的主编码器图像组或者备编码器图像组。 A code stream switching system, characterized by comprising a master encoder, the encoder for transmitting a data packet to the primary server; Remarks encoder, for transmitting to the server apparatus encoder packet; server for receiving picture group and the main encoder the encoder apparatus picture group; encoder to the new primary image group and the new group of pictures encoder apparatus timestamps; abnormal if the master encoder, the encoder apparatus reads each image group, to obtain the said one standby encoder time stamp each group of pictures; timestamp exception before the last main image group of the encoder for each image group prepared encoder time stamp of the main encoder; if the found with the main encoder error before the same timestamp of the last group of a master encoder time stamp image encoder apparatus picture group, in place of the abnormality of the encoder main encoder will be prepared, and the apparatus has the same time stamp picture group after the encoder apparatus to the local encoder disk image group; a local disk, the master encoder for receiving the image transmitted by the server or a group of the encoder apparatus picture group.
CN2011104336677A 2011-12-21 2011-12-21 Bit stream switching method, device, server and system CN102572517A (en)

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