TWI781596B - Projector and a method for operating the projector - Google Patents
Projector and a method for operating the projector Download PDFInfo
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本發明是有關於一種投影機及其操作方法,且特別是有關於一種具有飛梭旋鈕的投影機及其操作方法。The present invention relates to a projector and its operating method, and in particular to a projector with a jog shuttle knob and its operating method.
一般而言,使用者要調整投影機的亮度、圖像模式、伽瑪設定、音量及輸入源等功能目前都是經由鍵盤(keypad)操作進入螢幕顯示模式裡進行設定,使用方便性不佳。並且,使用鍵盤操作須同時看著顯示畫面來進行設定,容易會操作錯誤或者來不及設定螢幕顯示模式就結束設定並跳出。Generally speaking, the user needs to adjust the projector's brightness, image mode, gamma setting, volume, input source and other functions. Currently, the settings are entered into the screen display mode through keyboard (keypad) operation, which is not easy to use. In addition, you have to watch the display screen at the same time to set when you use the keyboard. It is easy to make mistakes or end the setting and jump out before setting the screen display mode.
“先前技術”段落只是用來幫助了解本發明內容,因此在“先前技術”段落所揭露的內容可能包含一些沒有構成所屬技術領域中具有通常知識者所知道的習知技術。在“先前技術”段落所揭露的內容,不代表該內容或者本發明一個或多個實施例所要解決的問題,在本發明申請前已被所屬技術領域中具有通常知識者所知曉或認知。The "Prior Art" paragraph is only used to help understand the content of the present invention, so the content disclosed in the "Prior Art" paragraph may contain some conventional technologies that do not constitute the knowledge of those with ordinary skill in the art. The content disclosed in the "Prior Art" paragraph does not mean that the content or the problems to be solved by one or more embodiments of the present invention have been known or recognized by those with ordinary knowledge in the technical field before the application of the present invention.
本發明提供一種具有飛梭旋鈕的投影機及其操作方法,方便使用者對投影機進行設定。The invention provides a projector with a shuttle knob and an operation method thereof, which is convenient for users to set the projector.
本發明的其他目的和優點可以從本發明所揭露的技術特徵中得到進一步的了解。Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.
為達上述之一或部份或全部目的或是其他目的,本發明的一實施例提出一種投影機,包括控制器電路以及飛梭旋鈕。控制器電路用以控制投影機的操作。飛梭旋鈕設置在投影機的上蓋且耦接至控制器電路。根據飛梭旋鈕的操作方式,控制器電路控制投影機是否進入螢幕顯示模式。當投影機進入螢幕顯示模式時,控制器電路控制投影機在螢幕上投影第一選單。根據飛梭旋鈕的操作方式,控制器電路在第一選單上選擇投影機的調整選項。當投影機不進入螢幕顯示模式時,控制器電路控制投影機在螢幕上投影第二選單。根據飛梭旋鈕的操作方式,控制器電路在第二選單上設定投影機的調整選項。To achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a projector including a controller circuit and a jog dial. The controller circuit is used to control the operation of the projector. The jog knob is disposed on the upper cover of the projector and coupled to the controller circuit. According to the operation mode of the jog dial, the controller circuit controls whether the projector enters the screen display mode. When the projector enters the screen display mode, the controller circuit controls the projector to project the first menu on the screen. Depending on how the jog dial is operated, the controller circuit selects the projector's adjustment options on the first menu. When the projector does not enter the screen display mode, the controller circuit controls the projector to project the second menu on the screen. According to the operation mode of the jog dial, the controller circuit sets the adjustment options of the projector on the second menu.
在本發明的一實施例中,上述的飛梭旋鈕的操作方式包括按壓飛梭旋鈕及旋轉飛梭旋鈕。當飛梭旋鈕被按壓時,控制器電路控制投影機進入螢幕顯示模式。當飛梭旋鈕被旋轉時,控制器電路控制投影機不進入螢幕顯示模式。In an embodiment of the present invention, the operation method of the above-mentioned jog shuttle knob includes pressing the jog shuttle knob and rotating the jog shuttle knob. When the jog dial is pressed, the controller circuit controls the projector to enter the screen display mode. When the jog dial is rotated, the controller circuit controls the projector not to enter the screen display mode.
在本發明的一實施例中,上述的第一選單及第二選單包括投影機的調整選項。第二選單上的投影機的調整選項是在螢幕顯示模式下預先設定的。In an embodiment of the present invention, the above-mentioned first menu and second menu include adjustment options of the projector. The projector's adjustment options on the second menu are pre-set in On-Screen Display mode.
在本發明的一實施例中,當投影機不進入螢幕顯示模式時,控制器電路控制投影機進入影像顯示模式,以在螢幕投射影像畫面。第二選單與影像畫面重疊。In an embodiment of the present invention, when the projector does not enter the screen display mode, the controller circuit controls the projector to enter the image display mode to project images on the screen. The second menu overlaps with the video screen.
在本發明的一實施例中,上述的第一選單在螢幕上顯示的尺寸大於第二選單在螢幕上顯示的尺寸。In an embodiment of the present invention, the size displayed on the screen of the above-mentioned first menu is larger than the size displayed on the screen of the second menu.
在本發明的一實施例中,上述的飛梭旋鈕包括指示燈條,用以表示投影機的調整選項設定。In an embodiment of the present invention, the above-mentioned jog dial knob includes an indicator light bar, which is used to indicate the adjustment option setting of the projector.
在本發明的一實施例中,上述的投影機的調整選項包括圖像選擇調整選項、伽瑪選擇調整選項、音量調整選項、亮度調整選項、輸入源選擇調整選項、選單設定調整選項及一般設定調整選項。In an embodiment of the present invention, the adjustment options of the projector include image selection adjustment options, gamma selection adjustment options, volume adjustment options, brightness adjustment options, input source selection adjustment options, menu setting adjustment options, and general settings. Adjustment options.
為達上述之一或部份或全部目的或是其他目的,本發明的一實施例提出一種投影機的操作方法。投影機包括飛梭旋鈕。所述投影機的操作方法包括:根據飛梭旋鈕的操作方式,控制投影機是否進入螢幕顯示模式;當投影機進入螢幕顯示模式時,控制投影機在螢幕上投影第一選單,且根據飛梭旋鈕的操作方式,在第一選單上選擇投影機的調整選項;以及當投影機不進入螢幕顯示模式時,控制投影機在螢幕上投影第二選單,且根據飛梭旋鈕的操作方式,在第二選單上設定投影機的調整選項。In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a method for operating a projector. The projector includes a jog dial. The operation method of the projector includes: controlling whether the projector enters the screen display mode according to the operation mode of the jog shuttle knob; when the projector enters the screen display mode, controlling the projector to project the first menu on the screen, and according to the jog shuttle The operation mode of the knob is to select the adjustment option of the projector on the first menu; and when the projector does not enter the screen display mode, control the projector to project the second menu on the screen, and according to the operation mode of the jog shuttle knob, in the Set the adjustment options of the projector on the second menu.
在本發明的一實施例中,上述的飛梭旋鈕的操作方式包括按壓飛梭旋鈕及旋轉飛梭旋鈕。根據飛梭旋鈕的操作方式,控制投影機是否進入螢幕顯示模式的步驟包括:當飛梭旋鈕被按壓時,控制投影機進入螢幕顯示模式;以及當飛梭旋鈕被旋轉時,控制投影機不進入螢幕顯示模式。In an embodiment of the present invention, the operation method of the above-mentioned jog shuttle knob includes pressing the jog shuttle knob and rotating the jog shuttle knob. According to the operation mode of the jog dial, the steps of controlling whether the projector enters the screen display mode include: when the jog dial is pressed, the projector is controlled to enter the screen display mode; and when the jog dial is rotated, the projector is not controlled to enter On-screen display mode.
在本發明的一實施例中,上述的投影機的操作方法更包括:在螢幕顯示模式下,預先設定第二選單上的投影機的調整選項。In an embodiment of the present invention, the above-mentioned method for operating the projector further includes: in the screen display mode, presetting the adjustment options of the projector on the second menu.
在本發明的一實施例中,當投影機不進入螢幕顯示模式時,所述的投影機的操作方法更包括:控制投影機進入影像顯示模式,以在螢幕投射影像畫面。第二選單與影像畫面重疊。In an embodiment of the present invention, when the projector does not enter the screen display mode, the operation method of the projector further includes: controlling the projector to enter the image display mode to project an image on the screen. The second menu overlaps with the video screen.
在本發明的一實施例中,上述的第一選單在螢幕上顯示的尺寸大於第二選單在螢幕上顯示的尺寸。In an embodiment of the present invention, the size displayed on the screen of the above-mentioned first menu is larger than the size displayed on the screen of the second menu.
在本發明的一實施例中,上述的飛梭旋鈕包括指示燈條,用以表示投影機的調整選項設定。In an embodiment of the present invention, the above-mentioned jog dial knob includes an indicator light bar, which is used to indicate the adjustment option setting of the projector.
在本發明的一實施例中,上述的投影機的調整選項包括圖像選擇調整選項、伽瑪選擇調整選項、音量調整選項、亮度調整選項、輸入源選擇調整選項、選單設定調整選項及一般設定調整選項。In an embodiment of the present invention, the adjustment options of the projector include image selection adjustment options, gamma selection adjustment options, volume adjustment options, brightness adjustment options, input source selection adjustment options, menu setting adjustment options, and general settings. Adjustment options.
基於上述,本發明的實施例至少具有以下其中一個優點或功效。本發明的實施例的投影機具有飛梭旋鈕,其操作方法方便使用者對投影機進行設定。Based on the above, the embodiments of the present invention have at least one of the following advantages or functions. The projector in the embodiment of the present invention has a jog dial, and its operation method is convenient for the user to set the projector.
為讓本發明的上述特徵和優點能更明顯易懂,下文特舉實施例,並配合所附圖式作詳細說明如下。In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.
有關本發明之前述及其他技術內容、特點與功效,在以下配合參考圖式之一較佳實施例的詳細說明中,將可清楚的呈現。以下實施例中所提到的方向用語,例如:上、下、左、右、前或後等,僅是參考附加圖式的方向。因此,使用的方向用語是用來說明並非用來限制本發明。The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only directions referring to the attached drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.
圖1繪示本發明一實施例之投影機及螢幕的立體示意圖。圖2繪示本發明一實施例之投影機的方塊示意圖。請參考圖1及圖2,投影機100用以在影像顯示模式將影像畫面投射在螢幕200上,並且在螢幕顯示模式將快捷選單(第一選單)投射在螢幕200上。投影機100包括控制器電路110及飛梭旋鈕120。控制器電路110用以控制投影機100的操作。飛梭旋鈕120設置在投影機100的上蓋112且耦接至控制器電路110。控制器電路110根據飛梭旋鈕的操作方式來控制投影機100是否進入螢幕顯示模式。特別說明的是,螢幕顯示模式可為投影機100的另一個操作模式,亦可為投影機100投射第一選單以覆蓋(完全覆蓋或大部分覆蓋)影像顯示模式的影像畫面,本發明並不特別限制。FIG. 1 shows a three-dimensional schematic view of a projector and a screen according to an embodiment of the present invention. FIG. 2 is a schematic block diagram of a projector according to an embodiment of the present invention. Please refer to FIG. 1 and FIG. 2 , the
圖3繪示圖1及圖2實施例之飛梭旋鈕的操作方式的示意圖。請參考圖3,飛梭旋鈕120的操作方式至少包括按壓、按壓並保持(簡稱長按)及旋轉。長按例如為使用者按壓飛梭旋鈕120並且保持一段時間,例如3秒,此時間長度不用以限定本發明。旋轉包括向左旋轉及向右旋轉。FIG. 3 is a schematic diagram showing the operation mode of the jog shuttle knob in the embodiment of FIG. 1 and FIG. 2 . Please refer to FIG. 3 , the operation mode of the
圖4繪示本發明一實施例之螢幕顯示第一選單的概要示意圖。請同時參考圖1及圖4,當飛梭旋鈕120被按壓時,投影機100進入螢幕顯示模式,控制器電路110控制投影機100在螢幕200上投影第一選單400。第一選單400包括投影機100的各種調整選項。根據飛梭旋鈕120的操作方式,可在第一選單400上選擇並設定投影機100的調整選項。投影機100的調整選項包括圖像選擇調整選項、伽瑪選擇調整選項、音量調整選項、亮度調整選項、輸入源選擇調整選項、選單設定調整選項及一般設定調整選項。舉例而言,在進入螢幕顯示模式之後,使用者可旋轉飛梭旋鈕120來選擇投影機100的調整選項,接著使用者可按壓飛梭旋鈕120來設定所選擇的投影機100的調整選項。此外,使用者也可通過長按飛梭旋鈕120來退出目前所選擇的投影機100的調整選項,或者退出第一選單400,回到螢幕200沒有顯示第一選單400的狀態。FIG. 4 is a schematic diagram of a first menu displayed on a screen according to an embodiment of the present invention. Please refer to FIG. 1 and FIG. 4 at the same time. When the
另一方面,圖5繪示本發明一實施例之螢幕顯示第二選單的概要示意圖。請參考圖5,投影機100處於影像顯示模式,螢幕200上已顯示投影機100所投射的影像畫面600。此時,當飛梭旋鈕120被旋轉時,控制器電路110可控制投影機100不進入螢幕顯示模式而是直接在螢幕200上顯示與影像畫面600重疊的第二選單500。也就是說,投影機100不進入螢幕顯示模式,控制器電路110會控制投影機在螢幕200上投影第二選單500(預設定的調整選項),並可在第二選單500上設定投影機100的調整選項。在本實施例中,第一選單400在螢幕200上顯示的尺寸大於第二選單500在螢幕200上顯示的尺寸。On the other hand, FIG. 5 shows a schematic diagram of a second menu displayed on the screen according to an embodiment of the present invention. Referring to FIG. 5 , the
在一實施例中,投影機100未處於影像顯示模式,即螢幕200上沒有顯示影像畫面600。此時,當飛梭旋鈕120被旋轉時(投影機100不進入螢幕顯示模式),控制器電路110可控制投影機100進入影像顯示模式,以在螢幕200上投射影像畫面600以及第二選單500,且第二選單500與影像畫面600重疊。在此情況下,影像畫面600例如可為白畫面、標誌畫面或其他預設畫面。In one embodiment, the
在本實施例中,第二選單500上的投影機100的調整選項是可以在螢幕顯示模式下(例如第一選單400)預先設定的,意即,使用者可自行定義第二選單500所顯示的調整選項。具體而言,第二選單500所顯示的投影機100的調整選項可以在第一選單400的選單設定調整選項中進行設定。例如,在選單設定調整選項中,可依序為圖像選擇調整選項、伽瑪選擇調整選項、音量調整選項、亮度調整選項、輸入源選擇調整選項等模式的循環。因此,使用者可通過旋轉飛梭旋鈕120來選擇第二選單500中投影機100的調整選項。例如,第二選單500初始是顯示亮度調整選項,使用者向右旋轉飛梭旋鈕120可依序選擇輸入源選擇調整選項、圖像選擇調整選項、伽瑪選擇調整選項及音量調整選項,再回到亮度調整選項。或者,使用者向左旋轉飛梭旋鈕120可依序選擇音量調整選項、伽瑪選擇調整選項、圖像選擇調整選項及輸入源選擇調整選項,再回到亮度調整選項。In this embodiment, the adjustment options of the
圖6繪示本發明一實施例之螢幕顯示第二選單的流程示意圖。請參考圖1及圖6,在步驟S100中,投影機100處於影像顯示模式將影像畫面600投射至螢幕200,且螢幕200顯示影像畫面600。當飛梭旋鈕120被旋轉時,顯示流程從步驟S100進入步驟S110。在步驟S110中,控制器電路110控制投影機100不進入螢幕顯示模式而是在螢幕200上顯示與影像畫面600重疊的第二選單500。在步驟S110中,是以第二選單500初始顯示亮度調整選項為例。在顯示第二選單500時,當飛梭旋鈕120被旋轉時,控制器電路110可調整影像畫面600的亮度。可理解的是,第二選單500被設定為其他調整選項時,在顯示第二選單500時,飛梭旋鈕120被旋轉可調整其他的調整選項,例如音量、伽瑪選擇或輸入源選擇。另外,在步驟S110中,可更包含預覽功能,意即,在顯示第二選單500且飛梭旋鈕120被旋轉時,可即時調整影像畫面600的亮度(或其他對應的調整選項)。FIG. 6 is a schematic flow chart of displaying a second menu on the screen according to an embodiment of the present invention. Please refer to FIG. 1 and FIG. 6 , in step S100 , the
接著,在步驟S110中,當飛梭旋鈕120被按壓時,顯示流程從步驟S110進入步驟S120。在步驟S120中,影像畫面600的亮度根據步驟S110的亮度調整結果而顯示,即亮度設定完成並儲存亮度設定。另一方面,在步驟S110中,當飛梭旋鈕120被長按時,顯示流程從步驟S110回到步驟S100,表示控制器電路110控制投影機100退出第二選單500回到影像顯示模式,影像畫面600的亮度不改變,即不儲存設定的亮度設定。Next, in step S110, when the
圖7繪示本發明一實施例之飛梭旋鈕的概要示意圖。請參考圖7,在本實施例中,飛梭旋鈕120包括指示燈條122,用以表示投影機100目前的調整選項設定。舉例而言,指示燈條122可通過不同的顏色來表示投影機100的調整選項設定。或者,指示燈條122可搭配顏色通過不同的顯示方式,例如閃爍、漸亮、漸暗、呼吸漸變等來表示投影機100的調整選項設定。FIG. 7 shows a schematic diagram of a jog shuttle knob according to an embodiment of the present invention. Please refer to FIG. 7 , in this embodiment, the
圖8繪示本發明一實施例之投影機的操作方法的步驟流程圖。請參考圖1、圖2及圖8,本實施例之投影機的操作方法至少適用於圖1、圖2的投影機100,惟本發明並不加以限制。以圖1的圖1、圖2的投影機100為例,在步驟S200中,根據飛梭旋鈕120的操作方式,控制器電路110控制投影機100是否進入螢幕顯示模式。當飛梭旋鈕120被按壓時,投影機100進入螢幕顯示模式,操作方法執行步驟S210。當飛梭旋鈕120被旋轉時,投影機100不進入螢幕顯示模式,操作方法執行步驟S220。在步驟S210中,控制器電路110控制投影機100在螢幕200上投影第一選單400。在步驟S220中,控制器電路110控制投影機100在螢幕200上投影第二選單500。另外,本實施例之投影機100的操作方法可以由圖1至圖7實施例之敘述中獲致足夠的教示、建議與實施說明。FIG. 8 is a flow chart showing the steps of the operation method of the projector according to an embodiment of the present invention. Please refer to FIG. 1 , FIG. 2 and FIG. 8 , the operation method of the projector in this embodiment is at least applicable to the
綜上所述,本發明的實施例至少具有以下其中一個優點或功效。在投影機上蓋設計一個飛梭旋鈕,可讓使用者直接調整圖像選擇調整選項、伽瑪選擇調整選項、音量調整選項、亮度調整選項、輸入源選擇調整選項、選單設定調整選項及一般設定調整選項等功能,方便使用者直覺式操作。使用者只需看著顯示畫面轉動飛梭旋鈕進行設定。此外,為了兼顧各個使用者的需求不同,此快捷功能(第二選單)可以讓使用者自行定義。In summary, the embodiments of the present invention have at least one of the following advantages or effects. A jog dial is designed on the top cover of the projector, allowing users to directly adjust image selection adjustment options, gamma selection adjustment options, volume adjustment options, brightness adjustment options, input source selection adjustment options, menu setting adjustment options, and general setting adjustments Options and other functions are convenient for users to operate intuitively. Users only need to look at the display screen and turn the jog dial to make settings. In addition, in order to take into account the different needs of each user, this shortcut function (the second menu) can be defined by the user.
惟以上所述者,僅為本發明之較佳實施例而已,當不能以此限定本發明實施之範圍,即大凡依本發明申請專利範圍及發明說明內容所作之簡單的等效變化與修飾,皆仍屬本發明專利涵蓋之範圍內。另外本發明的任一實施例或申請專利範圍不須達成本發明所揭露之全部目的或優點或特點。此外,摘要部分和標題僅是用來輔助專利文件搜尋之用,並非用來限制本發明之權利範圍。此外,本說明書或申請專利範圍中提及的“第一”、“第二”等用語僅用以命名元件(element)的名稱或區別不同實施例或範圍,而並非用來限制元件數量上的上限或下限。But what is described above is only a preferred embodiment of the present invention, and should not limit the scope of implementation of the present invention with this, that is, all simple equivalent changes and modifications made according to the patent scope of the present invention and the content of the description of the invention, All still belong to the scope covered by the patent of the present invention. In addition, any embodiment or scope of claims of the present invention does not need to achieve all the objectives or advantages or features disclosed in the present invention. In addition, the abstract and the title are only used to assist the search of patent documents, and are not used to limit the scope of rights of the present invention. In addition, terms such as "first" and "second" mentioned in this specification or the scope of the patent application are only used to name elements (elements) or to distinguish different embodiments or ranges, and are not used to limit the number of elements. upper or lower limit.
100:投影機 110:控制器電路 112:上蓋 120:飛梭旋鈕 122:指示燈條 200:螢幕 400:第一選單 500:第二選單 600:影像畫面 S100、S110、S120、S200、S210、S220:步驟 100:Projector 110: Controller circuit 112: top cover 120: Shuttle knob 122: Light bar 200: screen 400: First option 500: second option 600: video screen S100, S110, S120, S200, S210, S220: steps
圖1繪示本發明一實施例之投影機及螢幕的立體示意圖。 圖2繪示本發明一實施例之投影機的方塊示意圖。 圖3繪示圖1及圖2實施例之飛梭旋鈕的操作方式的示意圖。 圖4繪示本發明一實施例之螢幕顯示第一選單的概要示意圖。 圖5繪示本發明一實施例之螢幕顯示第二選單的概要示意圖。 圖6繪示本發明一實施例之螢幕顯示第二選單的流程示意圖。 圖7繪示本發明一實施例之飛梭旋鈕的概要示意圖。 圖8繪示本發明一實施例之投影機的操作方法的步驟流程圖。 FIG. 1 shows a three-dimensional schematic view of a projector and a screen according to an embodiment of the present invention. FIG. 2 is a schematic block diagram of a projector according to an embodiment of the present invention. FIG. 3 is a schematic diagram showing the operation mode of the jog shuttle knob in the embodiment of FIG. 1 and FIG. 2 . FIG. 4 is a schematic diagram of a first menu displayed on a screen according to an embodiment of the present invention. FIG. 5 is a schematic diagram showing a second menu displayed on the screen according to an embodiment of the present invention. FIG. 6 is a schematic flow chart of displaying a second menu on the screen according to an embodiment of the present invention. FIG. 7 shows a schematic diagram of a jog shuttle knob according to an embodiment of the present invention. FIG. 8 is a flow chart showing the steps of the operation method of the projector according to an embodiment of the present invention.
100:投影機 100:Projector
112:上蓋 112: top cover
120:飛梭旋鈕 120: Shuttle knob
200:螢幕 200: screen
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TW200527110A (en) * | 2003-10-20 | 2005-08-16 | Johnson Res And Dev Co Inc | Portable multimedia projection system |
CN1898708A (en) * | 2003-12-18 | 2007-01-17 | 皇家飞利浦电子股份有限公司 | Method and system for control of a device |
CN101095080A (en) * | 2005-01-05 | 2007-12-26 | 诺基亚公司 | Stabilized image projecting device |
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CN209949308U (en) * | 2019-08-19 | 2020-01-14 | 安徽百视达科技有限公司 | Projection system and electronic device |
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TW200527110A (en) * | 2003-10-20 | 2005-08-16 | Johnson Res And Dev Co Inc | Portable multimedia projection system |
CN1898708A (en) * | 2003-12-18 | 2007-01-17 | 皇家飞利浦电子股份有限公司 | Method and system for control of a device |
CN101095080A (en) * | 2005-01-05 | 2007-12-26 | 诺基亚公司 | Stabilized image projecting device |
CN102318350A (en) * | 2009-02-03 | 2012-01-11 | 罗布照明有限公司 | Improvement to digital picture projection lamp tool system |
CN209949308U (en) * | 2019-08-19 | 2020-01-14 | 安徽百视达科技有限公司 | Projection system and electronic device |
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