571591 A7 發明說明（ 10 15 經濟部智慧財產局員工消費合作社印製 20 發明領域 本發明係關於網路會議或電信視訊 類會議之發謂缝枝，俾㈣會議之崎、關於此 發明背景 網路會議或視訊會議因通訊頻寬改善而大幅習賴路會議中，-般由主席控制會議的進度及^動安^ 發吕的順序，時常因與會者人數眾多，令主席須花 精神注意審視各與會者現況，以好d無法謹: 度。再者因與會者可能因其他事務而未注意勘席2 = 言者的發言指示朗軌信號滯後而需等待較長時^ 完成指定發言程序，如此將耗費大量等待時間，影響1能 效率，並且主席大部分精力投注於議程及注意各與會， 之現況將無法專心進入實質會議内容。另一方面各與會貝 員亦須隨時引發主席注意以爭取發言機會亦將使會:成 雜而無效率。 "灵紛 發明概要 本發明之主要目的在於強化基於網路之視訊會議系 統，其方式為擷取由系統提供之「語音感測」 sensor)與「發吕按紐感測」（叩6业button)等結果，讓主席 或會議主持人察知欲發言之與會成員名單，並據以藉由選 擇系統提供之「發言權操控政策(control policy of SpeaJ<： right)」之模式組態設定，或依循系統預設之模式組雖 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）τ \90481a· --------------------^---------^φ— (請先閲讀背面之注意事項再填寫本頁} 91.3. 2,000 571591571591 A7 Description of the invention (10 15 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 20 Field of the invention The present invention relates to the issue of online conferences or telecommunication video conferences. Meetings or video conferences are greatly affected by the improvement of communication bandwidth. In general, the chairman controls the progress of the meeting and the order of the announcements. Often, due to the large number of participants, the chairman must pay attention to review each The current situation of the participants cannot be considered: Degree. Furthermore, because the participants may not pay attention to the survey due to other matters 2 = The speaker ’s speech instruction is delayed and the track signal is delayed ^ Complete the designated speech procedure, so It will consume a lot of waiting time, affecting the efficiency of the team, and most of the chairman ’s energy will be spent on the agenda and pay attention to the participants. Opportunities will also make the meeting: mixed and inefficient. "Summary of the invention of the invention" The main purpose of the invention is to strengthen the network-based video conference system The method is to capture the results of the "voice sensing" sensor provided by the system and the "fax button sensing" (叩 6 industry button), and let the chairman or conference host know the list of participants who want to speak. And based on the mode configuration setting of the "control policy of SpeaJ <: right" provided by the selection system, or according to the system's preset mode group, although this paper standard applies Chinese National Standard (CNS) A4 Specifications (210 X 297 mm) τ \ 90481a · -------------------- ^ --------- ^ φ— (Please read the back first Note for refilling this page} 91.3. 2,000 571591
五、發明說明（2) (default mode)，可即時產生會議發言順序名單並顯示於各 與會者顯示裝置上，令各與會者均明白發言順序，而不必 分神以吸引主持人之注意力以爭取發言機會，亦可清楚瞭 解’發吕者姓名而不須經由聲音以辨識發言者是誰，更可 5促進會議效率，祛除不熟悉之與會成員之隔閣感。另一方 面主席可Μ寺參考發吕排序名單並考量會議性質及議決標 的隨時選擇「發言順序指定」模式，依照預存於系統中之 「發言者排序」模式如依成員特權權重優先、最少發言最 優先、最先要求最優先、最多發言最優先、最遠距離最優 10先、最近距離最優先、群組特權權重最優先、最高通訊成 本最優先以及最低通訊成本最優先之原則，經由系統發言 權指派及分配模組選擇排序模式決定優先發言順序。 本發明關於上列各排序權重模式亦可組合多重模式予 以運用。 15 經由會議發言權指派及分配系統所產生之發言順序名 單將即時顯示於各與會成員之顯示裝置上，但唯有主席或 會議主持人可改變指定排序模式。 附圖簡述 20 參照下文之5羊細說明並配合各附圖，將可更完整地瞭 解本發明及其各項優點： 圖1顯示實施本發明之系统示意圖； 圖2顯示本發明系統流程圖； 圖3顯示本發明發言指派模式及發言順序名單產生之流程; -4- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 0 ί ϋ ϋ 1 ϋ 1 I*^OJ1 ϋ n n t I ϋ ·1 n n — ϋ 91. 3. 2,000 571591 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（3) 圖4顯示本發明發言順序名單及觀顯示畫面例。 發明詳細說明 現在請參閱圖1，其顯示本發明之系統示意圖，包含 5 一個網路（10)以及複數個與會者終端（12)、（14)、（16)、 (18)，形成一網路會議系統。其中網路（1〇)可為一般之網 際網路(INTERNET)、區域網路(LAN)等等，且各與會者終 可包含個人電腦工作站（workstation)等等。與會者終端 之一可被選任為主席或主持會議之r會議伺服器」或者是 10網路伺服器亦可為網路會議之會議伺服器，其餘的與會者 終端則被指定為「與會者」電腦，其主從關係完全可由選 擇之終端當為主持主席節點而啤叫主席程式而定，但是我 們當了解，任何特定的設備皆可作為此網路架構中之主持 終端或與會者終端。網路提供使用者可存取分散式資源並 15在多個電腦上處理應用之分散式電腦環境。並且本發明利 用網際網路通訊協定進行網路通訊。對本門技術具有一般 知識者當了解，各終端都設有一實體介面卡，而以電信或 通訊系統相連接，此外這數個終端不需要在實體上相同， 而是可以有不同的特徵。 20 每一與會者終端都是一個電腦系統，熟此門技術者當 了解，電腦系統一般包含一個或複數個系統匯流排、記憶 體、微處理器、存放系統程式碼及BIOS之ROM以及各 項週邊設備等等，藉由匯流排而彼此耦合。本發明各終端 的電腦為支援視訊會議此一目的，將包含若干組件··視訊 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 91. 3. 2,000 --------^---------^—0. (請先閲讀背面之注意事項再填寫本頁) 571591V. Description of the invention (2) (default mode), a list of conference speaking sequences can be generated and displayed on the display device of each participant, so that each participant can understand the speaking sequence without distracting to attract the moderator's attention. Fight for the opportunity to speak, you can also clearly understand the name of the speaker without the need to identify who the speaker is, but also to promote the efficiency of the meeting, and eliminate the sense of separation between members who are not familiar with the meeting. On the other hand, the chairman can select the "speaking order designation" mode at any time by referring to the ranking list and considering the nature of the meeting and the subject matter of the meeting. Principles of priority, first request first, most speaking first, most distant best 10 first, closest distance first, group privilege weight first, highest communication cost first, and lowest communication cost first The right assignment and allocation module selects the sorting mode to determine the priority speaking order. The present invention can also apply multiple modes in combination with each of the ranking weighting modes. 15 The speaking order list generated by the conference speaking right assignment and distribution system will be displayed on the display devices of the participating members in real time, but only the chairman or the conference moderator can change the designated ordering mode. Brief Description of the Drawings 20 The present invention and its various advantages will be more fully understood with reference to the following 5 detailed description of the sheep and the accompanying drawings: Figure 1 shows a schematic diagram of a system for implementing the present invention; Figure 2 shows a system flowchart of the present invention ; Figure 3 shows the process of generating the speech assignment mode and speech order list of the present invention; -4- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling in this Page) Printed by the Employees 'Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 0 ί ϋ ϋ 1 ϋ 1 I * ^ OJ1 ϋ nnt I 1 · 1 nn — ϋ 91. 3. 2,000 571591 A7 B7 Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs V. Description of the invention (3) FIG. 4 shows an example of a speaking order list and a viewing display screen of the present invention. Detailed description of the invention Now please refer to FIG. 1, which shows a schematic diagram of the system of the present invention, including 5 a network (10) and a plurality of participant terminals (12), (14), (16), (18), forming a network Road conference system. The network (10) may be a general Internet (LAN), a local area network (LAN), etc., and each participant may finally include a personal computer workstation (workstation), etc. One of the participant terminals can be selected as the chairperson or conference server hosting the conference "or 10 network servers can also be used as conference servers for online conferences, and the remaining participant terminals are designated as" participants " For computers, the master-slave relationship can be determined by the selected terminal as the chairman program and calling the chairman program, but we should understand that any specific device can be used as the host terminal or participant terminal in this network architecture. The network provides a distributed computer environment where users can access distributed resources and process applications on multiple computers. In addition, the present invention uses the Internet protocol for network communication. Those with ordinary knowledge of this technology should understand that each terminal is provided with a physical interface card and connected by telecommunications or communication systems. In addition, these terminals need not be physically identical, but may have different characteristics. 20 Each participant's terminal is a computer system. Those skilled in the art should understand that computer systems generally include one or more system buses, memory, microprocessors, ROMs that store system code and BIOS, and various other items. Peripherals and so on are coupled to each other by a bus. To support the purpose of video conference, the computer of each terminal of the present invention will include several components. The paper size of the video is applicable to China National Standard (CNS) A4 (210 X 297 mm) 91. 3. 2,000 ----- --- ^ --------- ^-0. (Please read the notes on the back before filling this page) 571591
五、發明說明（4) 5 10 15 攝影機、麥克風κ等音響設備、視訊介面卡及ram 支援的適用控制軟體；尤其是本發明具備有「語音感測」 ^ SenS〇r)或「發言按姐感測」（speak button)以偵測與 會者之發言意向，並能濾掉背景雜音，再正確判定此人是 否欲發曰。該語音感測或發言按鈕感測可以是一附加的硬 體裝2或者是以應用程式的軟體實現，當感測器測得發言 者語音強度(例如··分貝值)大於-設定_(teShold)或- 預設鍵盤訊號被致動時，即回應給該會議伺服器告知與會 者欲發言的訊號。 另一方面，熟此門技術者亦當了解，因本發明支援視 訊會議，各與會者終端包含視訊會議需要的視訊影音處理 軟體、壓縮軟體、通訊協定軟體、視窗晝面分割軟體及操 :純外。特別地，本發明之方法提供一種系統用以操控 曰4之進行及網路會議發言權自動指派分配，藉此網路會 4的主席在會議進行中無需分心指派分配發言權，其實施 方式係以應用程式的軟體實現，該應用程式通常安裝在會 議伺服器上。 胃 經 濟 部 智 慧 財 產 局 員 工 消 t 合 作 社 印 製 20 請參閲圖2，會議啟始(步驟100)後，除了主席外，每 一與會者的發言權皆由系統自動決定 。在步驟200中，依 照終端该測與會者語音感測或發言按鈕的訊號匯傳至會議 祠服器’當然要求發言的結果清單可顯示於主席或各與會 者之顯不裝置上，接著系統檢查主席是否介入發言順序排 序’如果主席對系統發出與會者發言權的決定，則系統中 斷預设發言模式並依主席的決定指定發言者。否則，系統 -6- 本紙張尺度適用1國國^T^i)A4規格⑽x 297公£ 91.3. --------------------^---------線 _ (請先閲讀背面之注意事項再填寫本頁) 571591 五、發明說明（5)V. Description of the invention (4) 5 10 15 Audio equipment such as camera, microphone κ, video interface card and ram supported applicable control software; in particular, the present invention is provided with "voice sensing" (Sensor) or "speak by sister" "Speak button" to detect the participant's intention to speak, and to filter out background noise, and then correctly determine whether the person wants to speak. The voice sensing or speaking button sensing may be an additional hardware 2 or implemented by application software. When the sensor detects that the speaker's speech intensity (for example, the decibel value) is greater than -set_ (teShold ) Or-When the preset keyboard signal is activated, it responds to the conference server to inform the participants of the signal to speak. On the other hand, those skilled in the art should also understand that because the present invention supports video conferences, each participant's terminal includes video and audio processing software, compression software, communication protocol software, window day and night segmentation software, and operating software required for video conferences. outer. In particular, the method of the present invention provides a system for controlling the progress of the conference and the automatic assignment and distribution of the speaking rights of the online conference, so that the chairman of the online conference 4 does not need to be distracted to assign and assign the speaking rights during the conference. It is implemented as software for an application, which is usually installed on a conference server. Printed by the Intellectual Property Office of the Ministry of Gastroenterology and Economics Bureau 20 Please refer to Figure 2. After the meeting starts (step 100), except for the chairman, the voice of each participant is automatically determined by the system. In step 200, the signal of the participant's voice sensing or speaking button is transmitted to the conference server according to the terminal's course. Of course, the result list of required speaking can be displayed on the chairman or the participant's display device, and then the system checks Whether the chairman intervenes in the order of speaking 'If the chairman issues a decision on the participants' right to speak, the system interrupts the preset speaking mode and designates a speaker according to the chairman's decision. Otherwise, the system-6- This paper size applies to 1 country ^ T ^ i) A4 size ⑽ x 297 male £ 91.3. -------------------- ^ --- ------ Line_ (Please read the notes on the back before filling this page) 571591 V. Description of the invention (5)
5 10 15 經濟部智慧財產局員工消費合作社印製 20 或:議主持者指定會議發言模 —=仃發言自動順序排序(步驟3。〇)，俾二： 的毛。^求插人順序名單中或以新選定 重^予 各应合者之_名單(步驟伽），再顯示於 各與9者之顯不裝置上(步驟5〇〇)，其中，在此步驟中， =Γ者，其聲音或影像訊號將經過處由 網路傳输料他與會者。而未㈣統許可的發言者並= 音減則①全不處理，且系統發出訊號各與會者是否准許 發言的通知。如此對有限頻寬的網路會議而言，資料處理 的效率可以大幅提昇。當然，會議主持者可以在本流程的 任何-個步驟㈣行發錢式情(int_pt)，使系統依盆 指示排定發言者。或者是，會議主持者在網路會議中，具 有最高優先發謂且可絲意更改;發言模式，俾使 會議的進行依其需要更改。 · 進一步參閱圖3,本發明更包含指定及修改發言排序 模式副程式，其包含擷取發言順序模式參數(3〇)，依傳入 之模式參數呼叫相應之模式運算常式，以重新運算發言排 序40(1)至40(n)，其中模式運算常式可分為：標準會議模 式（standard mode)、演講模式(presentatioI1 mode)、禁止模 式(disable mode)、討論模式(discussion mode)或優先權模 式(priority mode)等。其中，標準會議室模式是本發明系統 的預設值，指除了會議主持者外，依序只有一位與會者可 以發表意見’演講模式是指網路會議中只允許特定一位與 會者發表意見而其他與會者只能聽取意見，禁止模式是指 --------^---------^ (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 91. 3. 2,000 571591 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（6 ) 網路會議中只允許會議主持者發言而所有與會者只能聽取 陳述。討論模式是指希望在網路會議中所有與會者能盡情 發言自由討論，然而依統計指出，發言人數應以一至四人 為佳，人數太多則過吵雜沒有效率而人數太少過於死板沒 5 有討論的意義。因此，在本發明中，發言人數範圍限定一 至四人，且已登記發言而未獲許可者優先取得下次發言 權。 優先權模式指的是在網路會議中特定群組的一個或數 個與會者較其他與會者具有更高的發言優先權，在本發明 10 中，會議主持者可以預先或在會議中設定各個與會者的發 言優先權層級，系統則依優先權層級自動排定發言順序。 其可包含先進先服務模式(FIFS)由先表達發言者取得發言 權；指定插隊模式(preemptive chairman assignment)由主席 指定某人有優先發言權；群組特權模式(group priority)主 席指定或預設某群人有優先發言權；個人特權模式 (personal priority)由主席指定或預設某人有最高發言權； 最少最優先發言模式(Least presentation First priority)累積 發言記錄最少者優先發言權；最多最優先發言模式(most presentation first priority)累積會議記錄發言最多者取得發 20 言權；最遠最優先模式（farthest first priority)依地理位置 分，距離主席節點最遠者取得發言權；最近最優先模式 (nearest first priority)依地理位置距主席節點最近者取得發 言權；最高成本最優先模式(highest cost first priority)發言 通訊成本最高者優先取得發言權；最低成本最優先模式 —I------丨丨i丨丨丨丨丨丨tr-----1—-線-ill- (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 91. 3. 2,000 571591 A7 經濟部智慧財產局員工消費合作社印製 五、發明說明（7) (lowest cost flrst pri〇rity)發言成本最低者優先取得發言 權’並可結合上列若干種相容模式之多重組組合40⑴至 40(n)，並將運算結果傳至主程式予以顯示，並更新發言名 單(50) 〇 5 本發明的其中一種較佳實施例，係藉由上述方法，達 成發序㈣之絲，其詳述如后，請參閱圖4: •發:權層次預先設定·· 0代表最高優絲次，丨代表第 二南優先層次’ 3".8紐録’ 9代表不參與發言權 (即觀察者），層次高者，即個人特權高者，系統排定優 1〇先給予發言權；若同樣個人特權層次已無發言者，再安 排次一特權層次者發言。 V代表有發吕權者，Rl，R2，···代表申請⑻發言者，與 ^優先順序，系統會檢查「最多發言數」，是否已達發 a人數上限’若發言人數未達上限則依個人特權優先及 15 且°己先後由系統自動排序；若無後續申請(欲)發言者， ^統會將發言權指派給發言最多之個人特權優先層次最 高者。 •主席或會4主持人隨時擁有指派特權，可予插隊指派 (preemptive assign)。 20 _然本發明之系統與方法之較佳實施例已於隨附之圖 式中闡釋，並於前述之詳細說明中描述，應瞭解本發明並 不以所揭示之具體例子為限，可在不偏離所提出之本發明 之精神與隨附之申請專利範圍之定義了，做各式重新配 置、修改與替換。 — — — — — — — — — — — — — — — — — — I— « — — — — — — I— (請先閲讀背面之注意事項再填寫本頁) -9-5 10 15 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 20 Or: The chairperson of the meeting specifies the mode of the conference speech — = 自动 Automatic ordering of speeches (step 3. 0), 俾 二: 毛. ^ Please insert in the order list or re-select the _ list (step G) to each of the applicants, and then display it on the display device of each of the 9 persons (step 500). In this step, In the case of = Γ, the audio or video signal will be transmitted through the network to other participants. Speakers who have not been allowed by the system do not = tone reduction ① will not be processed at all, and the system will send a notification whether each participant is allowed to speak. In this way, for network conferences with limited bandwidth, the efficiency of data processing can be greatly improved. Of course, the moderator of the meeting can send money (int_pt) at any one step of the process to make the system schedule speakers according to the instructions. Or, the conference host has the highest priority in online conferences and can change it at will; the mode of speaking makes the conference progress change as needed. · Further referring to FIG. 3, the present invention further includes a subroutine for specifying and modifying a speech sequencing mode, which includes extracting a speech sequence mode parameter (30), and calling a corresponding mode calculation routine according to the incoming mode parameter to recalculate the speech. Sort 40 (1) to 40 (n), where the mode calculation routine can be divided into: standard conference mode (present mode), presentation mode (presentatioI1 mode), disable mode (disable mode), discussion mode (discussion mode) or priority Priority mode, etc. Among them, the standard conference room mode is a preset value of the system of the present invention, which means that in addition to the conference host, only one participant can express opinions in sequence. 'Speech mode means that only a specific participant is allowed to comment in an online conference. While other participants can only listen to opinions, the prohibition mode means -------- ^ --------- ^ (Please read the notes on the back before filling this page) This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) 91. 3. 2,000 571591 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (6) Only the conference host is allowed to speak in the online conference and All participants can only hear the presentation. Discussion mode refers to the hope that all participants in the online conference can speak freely and discuss freely. However, according to statistics, the number of speakers should be preferably one to four. Too many people are too noisy and inefficient while too few people are too rigid. Significant for discussion. Therefore, in the present invention, the number of speakers is limited to one to four, and those who have been registered to speak without permission are given priority to obtain the right to speak next time. Priority mode refers to the fact that one or more participants in a specific group have a higher speaking priority than other participants in a network conference. In the present invention 10, the conference host can set each of them in advance or in the conference. Participants' speaking priority level, the system will automatically arrange speaking order according to the priority level. It can include the first-in-first-served mode (FIFS) where the first-speaker gets the right to speak; the designated interruption mode (preemptive chairman assignment) is assigned by the chairperson to have a right to speak; the group priority mode (group priority) is assigned or preset by the chairperson A group of people has the right to speak; the personal privilege mode (personal priority) is designated by the chairperson or presupposes that someone has the highest right to speak; Least presentation First priority (cumulative speaking record) Most presentation first priority: cumulative conference minutes. The speaker who has the most speakers gets 20 speaking rights. The farthest first priority is based on geographical location. The person who is farthest away from the chairman node gets the speaking right. The most recent priority mode. (nearest first priority) Get the right to speak according to the geographic location nearest to the chairman node; highest cost first priority to speak The person with the highest communication cost gets the right to speak; the lowest cost highest priority mode—I ----- -丨 丨 i 丨 丨 丨 丨 丨 tr ----- 1—-line-ill- (Please read the back first Note: Please fill in this page again.) This paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) 91. 3. 2,000 571591 A7 Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of Invention (7 ) (lowest cost flrst pri〇rity) The person with the lowest cost of speaking will get the right to speak first '. It can be combined with several recombination modes of several compatible modes listed above, ranging from 4040 to 40 (n), and the calculation result will be transmitted to the main program for display. And update the list of speakers (50) 〇5 One of the preferred embodiments of the present invention is achieved by the method described above, the details are as follows, please refer to Figure 4: ·· 0 represents the highest priority, 丨 represents the second South priority level '3 " 8 New Record' 9 represents non-participation (that is, the observer), higher level, that is, the person with the highest personal privilege, the system is ranked as the best 10. Give the right to speak first; if there are no speakers at the same level of personal privilege, arrange the next level of privilege to speak. V represents the person who sent the right, R1, R2, ... represents the person who applied for the speaker, and ^ priority order, the system will check the "maximum number of speakers", whether the maximum number of a has been reached. Priority is based on personal privileges and 15 and ° have been automatically sorted by the system; if there is no subsequent application (for) speakers, the system will assign the right of speech to the person with the highest priority of personal privileges. • The chairman or moderator of the conference may have the assigned privileges at any time and may preemptive assign. 20 _ However, the preferred embodiments of the system and method of the present invention have been explained in the accompanying drawings and described in the foregoing detailed description. It should be understood that the present invention is not limited to the specific examples disclosed. Without departing from the spirit of the present invention and the definition of the scope of the accompanying patent application, various reconfigurations, modifications and replacements are made. — — — — — — — — — — — — — — — — — I— «— — — — — — — I— (Please read the notes on the back before filling out this page) -9-
571591 A7 B7 10 12 14, 16, 18 101 五、發明說明（8) 圖式主要元件符號對照 網路 主席節點 與會者節點 發言組態表 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 ο 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 91. 3. 2,000571591 A7 B7 10 12 14, 16, 18 101 V. Description of the invention (8) Symbols of the main components of the diagram are compared to the configuration table of the participants of the network chairman node participant nodes (please read the precautions on the back before filling this page) Ministry of Economic Affairs Printed by the Intellectual Property Bureau's Consumer Cooperatives ο This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 91. 3. 2,000