TW504925B - Selection between an in-band and an out-of-band channel for downloading code to a set top box - Google Patents

Selection between an in-band and an out-of-band channel for downloading code to a set top box Download PDF

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TW504925B
TW504925B TW089126641A TW89126641A TW504925B TW 504925 B TW504925 B TW 504925B TW 089126641 A TW089126641 A TW 089126641A TW 89126641 A TW89126641 A TW 89126641A TW 504925 B TW504925 B TW 504925B
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band
download
code
channel
patent application
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TW089126641A
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Ardavan Bahraini
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Motorola Inc
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/8166—Monomedia components thereof involving executable data, e.g. software
    • H04N21/818—OS software
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4383—Accessing a communication channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
    • H04N21/4432—Powering on the client, e.g. bootstrap loading using setup parameters being stored locally or received from the server
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/4508—Management of client data or end-user data
    • H04N21/4516—Management of client data or end-user data involving client characteristics, e.g. Set-Top-Box type, software version or amount of memory available
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/454—Content or additional data filtering, e.g. blocking advertisements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/8166—Monomedia components thereof involving executable data, e.g. software
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/165—Centralised control of user terminal ; Registering at central

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Stored Programmes (AREA)
  • Circuits Of Receivers In General (AREA)
  • Information Transfer Between Computers (AREA)

Description

504925 五、發明說明（1) 本發明係有關啟動有線通訊系統之置頂端子的領域， 且特別有關在帶内與帶外通道間下載碼至置頂盒的選擇。 置頂盒（n STB1’）係為大致包括啟動碼的有線通訊。此 啟動碼大致為被儲存於非依電性記憶體之指令的最小組 合’其指令係於置頂盒之加速或重設下被執行以完成置頂 盒的啟動。一模擬景象中，啟動碼完成被稱為平台碼之碼 之下級的下載。一旦置頂盒被完全裝設及啟動，置頂盒通 常不僅包括平台碼，亦包括通稱”載入器碼”的操作系統碼 及應用碼。 根據本發明之一較佳觀點，有線通訊系統可使用帶内 通道或帶外通道傳送訊號至置頂盒。在本發明之一版本 中，此系統可指定採用帶内或帶外通道，也就是回應如頻 寬有效性的參數組合。 第一圖為描繪在帶内與帶外通道間下載碼至置頂盒之 選擇的方法案例。 一較佳實施例中，啟動碼被儲存於快閃記憶體的受保 護扇區中’且平台碼及應用碼被儲存於快閃記憶體的未受 保護扇區中。 當置頂盒被加速或重設時，啟動碼可藉由執行循環冗 餘檢查（u C R Cπ )檢查來檢查快閃記憶體的完整性。若循環 冗餘檢查測驗通過，則置頂盒的控制被傳送至平台碼。若 循環冗餘檢查檢查不合袼，則控制被啟動碼保留。 循環冗餘檢查不合格意指快閃記憶體包括不標準軟體 或其因可能第一次加速而未被設計。啟動碼接著嘗試下載
504925 發明說明（2) =外碼物體以完成其啟動或重設操作。 制器接收的碼目標大致包括平台碼，作破啟動碼自數位控 被下載，包括操作系統及應用：:、雖：：：其他碼目標可 f發明範圍内，但平台碼可較佳被下裁儲=存位置亦在 中。 戰儲存於快閃記憶體 本發明允許碼目標，較佳為平 道或帶内ΓΙΒ”通道被下載。這些】二7外（"〇〇B”）通 來下載碼目標。例*，由於帶外通道頻=由帶内通道 時間。 戰碼通吊可減少下載 根據本發明的下載過程係參考 明。當如上述之快閃記憶體的循環冗餘說 ，始網路下載（步驟102)。循環冗餘檢查不—入°彳°捋，則 盒嘗試調整（步驟104)至帶外通道以從复應;』二丄置了員 =體接收有關位置或通道的資訊來存入^^載、*碼或 動碼可包括若干預存帶外通道頻率及以褚:^體。啟 外通2 ’及/八或可替帶外通道掃瞒某範圍的頻子率V、鎖入帶 若置頂盒不能鎖入帶外通道（步驟106)，則 利用若存在的預存參數來嘗試調整（ 至=益可 術熟知通道的帶内主通道。若其不存在或2式至如先，技 iH誤訊‘Γ!產生(步驟11(0 ’且下載過程終止(步驟則下 =〇) m，則啟動碼針對條件存 驟114)在主通道上。 )過濾（步 若置頂盒鎖入帶外通道(步驟106)，則置頂盒可針對
504925 五、發明說明（3) 具有已知條件存取表（CAT)之PID =〇x01 0x01的封包來過濾（步驟114)帶外通道 一個$名管理訊息（EMM)PID，其被用來 置頂盒至下載預期軟體或碼目標被放置 包。 置頂盒可為命名管理訊息PID解碼 116) ’且接著為具有為擁有副指令jd二 息被辨硪於條件存取表中之命名管理訊 (步驟11 8)帶外通道（或為主通道，則為 =釋，擁有副指令一id =3之下載一控制_ 疋置頂盒版本的碼目標應被下載在帶外 上’且可提供連絡參數以調整至通道。 載〜控制—訊息格式的例子被顯示於下表 及丁 ID(表 ID)= 3條件存取表包括 辨識包括用來導弓丨 之通道之資訊的封 條件存取表（步驟 =3之下載—控制—訊 息P I D之封包過濾 帶内通道）。如下 訊息可辨識做為特 通道或帶内通道 副指令— id = 3之下
第7頁 504925 五、發明說明（4) 表一 下載一控制一訊息〇{ 說明 副指令一id 設定3以做啓動碼下載 副指令一主體 碼一下載一黼一陳){ 平台一id 調整一下載一功能一域 帶外靈一下載一旗幟 {1=帶外靈，〇=帶內} 下載JPID 用於遲的PID 若滯外靈一下載一旗幟=1) 帶外靈J率 每DVB 纜線_遞送_系統__說明器 其他 內率 每DVB 纜線_遞送_系統_說明器 符號一速率 每DVB 纜線_遞送_系統__說明器 mW 每 ETS300-468 表 22 FEC 一外部 ETS300-468 表 21 FEC_內部 ETS300-468 表 23 應用JTO 辨識應用碼 應用J» 反射被參考應用的現今版本 } 應用_Jd
如上表一所示，副指令__ i d = 3指出下載—控制—訊息之
第8頁 一 -Π §兄％ ⑻ __ 、蓄心7 ~主體可包括啟動碼下載通道圖 圖的一例係被顯示於以上圓。啟動碼—下載-通 領域中，可能有若干不同的置圖人。 :二的軟體。各置頂盒包辨ς:體模型’各需要 預存的平台ID。碼之不 ;[辨熾其特定版本之事先 種不同置頂盒。各置頂各;1紅轉傳送以容納這些各 其平台— ID之碼的正確版皿者可错由適當過濾來挑選連絡 -下載肩—圖(見上確表版丄'给包括匹配平台—㈣啟動碼 置頂盒可檢查帶==逼-圖已被置頂盒獲得後， 载』織可指出V卜頂：；否旗了幡^ 道來接收預期的載帶外通道或帶内通 利用帶外： = 為下載-訊息的部份）。 制者指定有線系 =7 λ、下载的決定可藉由指示數位控 訊息之帶“帶：：：外或帶内通道中可得頻寬之下載— 線系統可包括—7知作者來達成。可替代的是，有 通道具有可得頻^通λ:視器，其可監測有線系統以決定 外或帶内通、曾炎2 及可適應性傳送數位控制者以利用帶 於被挑選基二二頂盒τ載。帶外-下載〜旗幟亦可基 對帶内通^上破設定，包括相對帶外通道上的下載時間 道之其他使用的下載時間，被下載之應用尺寸，對帶内通 置了員么 $的分裂程度’或被下載的應用類型。 通訊參數接著利用被提供於啟動碼-下載-通道—圖中之 /及應^號〜速率，調變，FEC一外部，FEC—内部，應用 〜版本）來調諧（步驟1 2 Q )至如帶外〜下載—旗幟 504925 五、發明說明（6) 所指定的帶外或帶内通道。置頂盒在此帶外或帶内通道上 濾波以接收下載_訊息，其包括預期碼目標及從此通道上 (步驟1 2 2 )之下載—訊息中的碼—目標所需要來組合預期 碼。下載—訊息的一例被顯示於下表二。 表二 下載一訊息〇{ 說明 表一id 區段語法指標 私有指標 保留位元 訊息長度 } ................................ 下載一訊息一主體0 一級 {保留，系統_碼_負載器，平台_目標， 應用，保留} 一名稱 一版本 一尺寸 碼—目標 CRC } 下載_訊息包括如上表二中顯示之下載__訊息_主體中 的預期碼目標。目標_ 級可指示碼—目標中之目標類型
504925 五、發明說明（Ό (也就是碼負載器、平台碼、應用玛、··· 合來自帶外或帶内通道的被指定下截^ 在接收及組 啟動瑪可取出碼-目標且將其館存於；步驟ί22)， 上述帶内或帶外選擇性係特別適 心機存取記憶體中。 重設。此應用中，碼目標包括平台碼」置頂盒的啟動或 載及儲存、於隨機存取記憶體中，‘環;二f Τ台碼已被下 查失敗，則下載失敗訊息被提供（ f衣几餘私查檢 f終止(步驟14〇)。若循環冗餘檢查：裁 標被儲存於快閃記憶體中（步 過，則下载目 循環冗餘檢查檢查於快閃記 )私式接者猎由執行 驟130)。若循環冗餘檢杳诵、= 而再次被檢查（步 (步驟θ 餘^查通過，則下載成功訊息被提# Q步驟132)，且網路下載被终 。攸杈仏 被傳至被下載的物體。 /恥40)及置頂盒的控制 明並考特定實施例針對上述描繪及說明，缺而本f 月並不預期雙限於的細 兄月…、而本發 士將了解本發明原則之同等：。f反的，熟練先前技術人 所有此修改均祜士、、 、物的範圍内的各種細節修改。 又均破本發明包含。
第11頁 504925 圖式簡單說明
第12頁

Claims (1)

  1. ^04925 91. 8. 23
    修正 年月 包 •二^有線-藍部系統j置頂含接收欽體碼目標的方法, 含的步驟為 接收指示是否調諧至帶内或帶外通道以接收碼目標的訊 息； 調諧至被指定通道；及 接收來自被指定通道的碼目標。 2 ·如申睛專利範圍第1項的方法，其中訊息包括具有下載 旗幟的下載控制吼息，及進一步包括利用帶内或帶外通道 來讀取下載旗幟值以決定是否下載碼目標。 3·如申請專利範圍第1項的方法，其中碼目標包括平台 碼，且其中接收碼目標的步驟包括利用呈現 動碼自有線系統下載平台碼。 ^如申請專利範圍第2項的方法，進一步包括以指令指示 帶内或帶外通道以接收碼目標至與置頂盒通訊的數位存取 控制器之步驟。 5、·如申請專利範圍第4項的方法，其中指定帶内或帶外通 道的步驟包括因應與有線系統有關的預設參數適應性決定 於帶内或帶外通道之間。 , 6·如申請專利範圍第5項的方法，進一步包括監測有線系 統之可得頻寬及因應該監測的步驟，而決定於帶内或帶外 通道之間。 7·二皇位存取複數個輿讓 通訊之的有逢訊系絲.，其改良包括·· 一個下載控制訊息，包括下載旗幟及與下載通道頻率有 第13頁 504925 91. 8. 23 _ 案號89126641_年月曰 修正_ 六、申請專利範圍 關的資訊，下載旗幟具有連絡帶外通道或帶内通道之一的 能力；及 啟動碼，用來決定下載控制旗幟值，用來調諧被標示於 下載控制訊息中的通道，及用來產生碼目標的下載。 8. 如申請專利範圍第7項的系統，進一步包括用於適應性 設定下載旗幟的裝置。 9. 如申請專利範圍第8項的系統，進一步包括用來決定可 得通道頻寬的裝置，及用來設定下載旗幟以因應決定可得 通道頻寬的裝置。
    1 0.如申請專利範圍第7項的系統，進一步包括在下載後儲 存碼目標的隨機存取記憶體，及用來驗證適當下載已產生 的循環冗餘檢查之檢查。
    第14頁
TW089126641A 1999-12-14 2001-01-17 Selection between an in-band and an out-of-band channel for downloading code to a set top box TW504925B (en)

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AU4717601A (en) 2001-07-03
AR034114A1 (es) 2004-02-04
EP1195053A2 (en) 2002-04-10
WO2001047250A3 (en) 2002-02-07
US20020116706A1 (en) 2002-08-22
WO2001047250A9 (en) 2002-08-15
WO2001047250A2 (en) 2001-06-28

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