Claims (8)
一種用於量測網際網路協定電視頻道切換延遲之方法，其係以一系統實現，該系統包括一排程單元、關聯於該排程單元的一遙控器、一串流提供單元、由該遙控器控制且能與該串流提供單元通訊的一數位視訊接收器，及能擷取及分析該數位視訊接收器及該串流提供單元間通訊之串流封包的一封包分析單元，該方法包含下列步驟：A)該排程單元係依據一預定排程來控制該遙控器，以使該遙控器傳送一連串頻道切換信號給該數位視訊接收器，藉此，該數位視訊接收器開始與該串流提供單元通訊複數個串流封包，以回應該數位視訊接收器所接收之該等頻道切換信號中每一者；B)該封包分析單元擷取該數位視訊接收器及該串流提供單元間通訊的該等串流封包；及C)該封包分析單元根據步驟B)中所擷取的該等串流封包，計算對應於該等頻道切換信號的複數個網際網路協定電視頻道切換延遲。
A method for measuring an internet protocol television channel switching delay is implemented by a system including a scheduling unit, a remote controller associated with the scheduling unit, and a stream providing unit. a digital video receiver controlled by the remote controller and capable of communicating with the streaming providing unit, and a packet analyzing unit capable of capturing and analyzing the streaming packet of the communication between the digital video receiver and the streaming providing unit, the method The method includes the following steps: A) the scheduling unit controls the remote controller according to a predetermined schedule, so that the remote controller transmits a series of channel switching signals to the digital video receiver, whereby the digital video receiver starts with the The stream providing unit communicates a plurality of stream packets to each of the channel switching signals received by the digital video receiver; B) the packet analyzing unit captures the digital video receiver and the stream providing unit The streaming packets of the communication; and C) the packet analysis unit calculates a plurality of networks corresponding to the channel switching signals according to the stream packets captured in step B) Internet protocol television channel switching delay.
依據申請專利範圍第1項所述之用於量測網際網路協定電視頻道切換延遲之方法，其中，在步驟C)中，該封包分析單元係執行下列子步驟，以計算該網際網路協定電視頻道切換延遲：c-1)取得一第一時間，其中，該第一時間係對應於該數位視訊接收器回應其所接收之該頻道切換信號而傳
送一網際網路組管理協定離開封包之時間；c-2)取得一第二時間，其中，該第二時間係對應於該數位視訊接收器在傳送該網際網路組管理協定離開封包後，其接收到第一個節目關聯表封包之時間；及c-3)計算該第一時間及該第二時間之一差值以得到該網際網路協定電視頻道切換延遲。
The method for measuring an internet protocol television channel switching delay according to claim 1, wherein in step C), the packet analyzing unit performs the following sub-steps to calculate the internet protocol. TV channel switching delay: c-1) obtaining a first time, wherein the first time corresponds to the digital video receiver responding to the channel switching signal it receives
Sending an internet group management agreement to leave the packet; c-2) obtaining a second time, wherein the second time corresponds to the digital video receiver after transmitting the internet group management agreement leaving the packet And receiving a time of the first program association table packet; and c-3) calculating a difference between the first time and the second time to obtain the internet protocol television channel switching delay.
依據申請專利範圍第1項所述之用於量測網際網路協定電視頻道切換延遲之方法，還包含一步驟D)，該封包分析單元計算步驟C)中所求得的該等網際網路協定電視頻道切換延遲之一平均值。
The method for measuring an internet protocol television channel switching delay according to claim 1, further comprising a step D), the packet analyzing unit calculating the internet network obtained in step C) An average of one of the agreed TV channel switching delays.
依據申請專利範圍第3項所述之用於量測網際網路協定電視頻道切換延遲之方法，其中，該預定排程包括一連串操作指令，每一操作指令具有一頻道指示及一時間間隔，在步驟A)中，該排程單元係依據該等操作指令之頻道指示來控制該遙控器，以使該遙控器傳送分別與該等頻道指示對應的該等頻道切換信號，且該排程單元依據該等操作指令之每一時間間隔來控制該遙控器傳送下一個頻道切換信號的時間。
The method for measuring an internet protocol television channel switching delay according to claim 3, wherein the predetermined schedule includes a series of operation instructions, each operation instruction having a channel indication and a time interval, In step A), the scheduling unit controls the remote controller according to the channel indication of the operation instructions, so that the remote controller transmits the channel switching signals respectively corresponding to the channel indications, and the scheduling unit is based on Each time interval of the operational commands controls the time at which the remote controller transmits the next channel switching signal.
一種用於量測網際網路協定電視頻道切換延遲之系統，適用於量測關於一數位視訊接收器的網際網路協定電視頻道切換延遲，該數位視訊接收器由一遙控器控制且能與一串流提供單元通訊，該系統包含：一排程單元，用以依據一預定排程來控制該遙控器以使其傳送一連串頻道切換信號給該數位視訊接收器，
藉此，該數位視訊接收器開始與該串流提供單元通訊複數個串流封包，以回應該數位視訊接收器所接收之該等頻道切換信號中每一者；及一封包分析單元，包括一監聽模組及一計算模組，該監聽模組用以擷取該數位視訊接收器及該串流提供單元間通訊的該等串流封包，該計算模組用以根據該監聽模組所擷取的該等串流封包，計算分別對應於該等頻道切換信號的複數個網際網路協定電視頻道切換延遲。
A system for measuring an internet protocol television channel switching delay, suitable for measuring an internet protocol television channel switching delay with respect to a digital video receiver, the digital video receiver being controlled by a remote controller and capable of The streaming provides unit communication, and the system includes: a scheduling unit configured to control the remote controller to transmit a series of channel switching signals to the digital video receiver according to a predetermined schedule,
Thereby, the digital video receiver starts to communicate with the stream providing unit with a plurality of stream packets to correspond to each of the channel switching signals received by the digital video receiver; and a packet analyzing unit, including a packet a monitoring module and a computing module, wherein the monitoring module is configured to capture the streamed packets between the digital video receiver and the stream providing unit, and the computing module is configured to be configured according to the monitoring module The stream packets are taken to calculate a plurality of internet protocol television channel switching delays corresponding to the channel switching signals.
依據申請專利範圍第5項所述之用於量測網際網路協定電視頻道切換延遲之系統，其中，該封包分析單元之該計算模組係取得該數位視訊接收器回應其所接收之該頻道切換信號而傳送一網際網路組管理協定離開封包之時間，以作為一第一時間，且該計算模組係取得該數位視訊接收器在傳送該網際網路組管理協定離開封包後接收到第一個節目關聯表封包之時間，以作為一第二時間，然後該計算模組計算該第一時間及該第二時間之一差值，以得到該網際網路協定電視頻道切換延遲。
The system for measuring an internet protocol television channel switching delay according to claim 5, wherein the computing module of the packet analyzing unit obtains the channel that the digital video receiver responds to. Switching the signal and transmitting an internet group management protocol to leave the packet as a first time, and the computing module obtains the digital video receiver to receive the first packet after transmitting the internet group management agreement leaving the packet The time of a program association table packet is used as a second time, and then the computing module calculates a difference between the first time and the second time to obtain the internet protocol television channel switching delay.
依據申請專利範圍第5項所述之用於量測網際網路協定電視頻道切換延遲之系統，其中該計算模組還計算該等網際網路協定電視頻道切換延遲之一平均值。
A system for measuring an internet protocol television channel switching delay according to claim 5, wherein the computing module further calculates an average of one of the internet protocol television channel switching delays.
依據申請專利範圍第7項所述之用於量測網際網路協定電視頻道切換延遲之系統，其中，該預定排程包括一連串操作指令，每一操作指令具有一頻道指示及一時間間隔，該排程單元係依據該等操作指令之頻道指示來控制
該遙控器，以使該遙控器傳送分別與該等頻道指示對應的該等頻道切換信號，且該排程單元係依據該等操作指令之每一時間間隔來控制該遙控器傳送下一個頻道切換信號的時間。The system for measuring an internet protocol television channel switching delay according to claim 7, wherein the predetermined schedule includes a series of operation instructions, each operation instruction having a channel indication and a time interval, The scheduling unit is controlled according to the channel indication of the operation instructions
The remote controller is configured to enable the remote controller to transmit the channel switching signals respectively corresponding to the channel indications, and the scheduling unit controls the remote controller to transmit the next channel switching according to each time interval of the operation instructions The time of the signal.