TWI751496B - 電子紙顯示器及其驅動方法 - Google Patents

電子紙顯示器及其驅動方法 Download PDF

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TWI751496B
TWI751496B TW109105103A TW109105103A TWI751496B TW I751496 B TWI751496 B TW I751496B TW 109105103 A TW109105103 A TW 109105103A TW 109105103 A TW109105103 A TW 109105103A TW I751496 B TWI751496 B TW I751496B
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paper display
electronic paper
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input signal
graphics library
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閰韋翰
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元太科技工業股份有限公司
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    • G—PHYSICS
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    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/38—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using electrochromic devices
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    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
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    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
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    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
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    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
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    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2014—Display of intermediate tones by modulation of the duration of a single pulse during which the logic level remains constant
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/344—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/37—Details of the operation on graphic patterns

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Abstract

一種電子紙顯示器包括電子紙顯示面板、圖形庫以及顯示控制器。顯示控制器耦接至電子紙顯示面板。顯示控制器用以接收線段輸入信號，並且呼叫圖形庫，接下來利用信號波型組來驅動電子紙顯示面板顯示線段。信號波型組是依據線段輸入信號及圖形庫來產生。上述線段包括至少一個灰階。另外，一種電子紙顯示器的驅動方法亦被提出。

Description

電子紙顯示器及其驅動方法
本發明是有關於一種顯示器及其驅動方法，且特別是有關於一種電子紙顯示器及其驅動方法。
在現有技術中，靜態資料庫SWTCON在手寫模式下畫線的時候，是利用從安卓（Android）系統端獲取到的X、Y座標值，將每一點連起來，作為顯示在電子紙顯示器上的線段。使用此方式畫出之線段在每個像素上只會有黑色，且沒有灰階。顯示的時候則使用只支援黑白兩色的信號波型組合來驅動電子紙顯示器，因此最後顯示在電子紙顯示器上的線段就只有黑色，而且在解析度比較小的電子紙顯示器上面較容易看起來有鋸齒狀。
本發明提供一種電子紙顯示器及其驅動方法，可驅動電子紙顯示面板顯示較圓滑的線段。
本發明的電子紙顯示器包括電子紙顯示面板、圖形庫以及顯示控制器。顯示控制器耦接至電子紙顯示面板。顯示控制器用以接收線段輸入信號，並且依據線段輸入信號來呼叫圖形庫，接下來利用信號波型組來驅動電子紙顯示面板顯示線段。信號波型組是依據線段輸入信號及圖形庫來產生線段。線段包括至少一個灰階。
本發明的電子紙顯示器的驅動方法包括：接收線段輸入信號；依據線段輸入信號呼叫圖形庫，以產生信號波型組。利用信號波型組來驅動電子紙顯示面板顯示線段。線段包括至少一個灰階。
在本發明的一實施例中，上述的灰階包括白色灰階、黑色灰階、一第一灰階及一第二灰階。
在本發明的一實施例中，上述的圖形庫為二維圖形庫。
在本發明的一實施例中，上述的圖形庫是SKIA圖形庫。
在本發明的一實施例中，上述的線段輸入信號為手寫輸入信號或筆寫輸入信號。
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。
圖1繪示本發明一實施例之電子紙顯示器的概要示意圖。圖2繪示圖1實施例之電子紙顯示器顯示筆劃輸入的概要示意圖。圖3繪示圖2實施例之手寫線段的像素的概要示意圖。請參考圖1及圖2，本實施例之電子紙顯示器100包括電子紙顯示面板110、圖形庫120及顯示控制器130。圖形庫120例如是圖形庫並儲存在記憶體儲存裝置。顯示控制器130耦接至電子紙顯示面板110。顯示控制器130用以接收線段輸入信號S1，並且依據線段輸入信號S1呼叫圖形庫120，接下來利用信號波型組來驅動電子紙顯示面板110顯示線段輸入信號S1的內容，即線段200。信號波型組是依據線段輸入信號S1及圖形庫120來產生線段200。線段200包括多個灰階。上述的線段200，可以為手寫線段或筆寫線段。線段輸入信號，即使用者利用筆、手或其他工具在電子紙顯示面板上的輸入。在本發明的實施例是筆輸入信號。
在本實施例中，圖形庫120例如是SKIA圖形庫（二維圖形庫）。在圖3中，線段200的多個像素210，可以包括白色灰階G0、黑色灰階G30、第一灰階G10及第二灰階G20。上述灰階的顯示方式，其中的一實施例，可以例如由圖4至圖6信號波型組的概要示意圖來驅動。
圖4、圖5、圖6繪示本發明一實施例之信號波型組的概要示意圖。請參考圖4至圖6，圖4所繪示的驅動信號波形V1例如是將電子紙顯示面板110中的粒子的光學狀態，由白色的初始狀態驅動為黑色的顯示狀態。圖5所繪示的驅動信號波形V2例如是將電子紙顯示面板110中的粒子的光學狀態，由黑色的初始狀態驅動為白色的顯示狀態。圖6所繪示的驅動信號波形V3例如是將電子紙顯示面板110中的粒子的光學狀態，由白色的初始狀態驅動為不同灰色的顯示狀態。在圖4至圖6中，電壓VDPS及VDNS分別是驅動信號波形V1、V2及V3的高準位及低準位。並且，驅動信號波形V1及V2的驅動時間為100毫秒至300毫秒，其較驅動信號波形V3的驅動時間500毫秒至1500毫秒為短。在圖4至圖6中，驅動信號波形V1、V2及V3的時間長度及其態樣僅用以例示說明，本發明並不限於此。
因此，顯示控制器130依據線段輸入信號S1來呼叫圖形庫120，以控制顯示驅動器130來產生如圖4至圖6所繪示的信號波型組V1、V2及V3。信號波型組V1、V2及V3可驅動電子紙顯示面板110顯示包括多個灰階的線段200，且線段200包括多可灰階，例如是G0~G30。信號波型組的產生方式及顯示控制器及顯示驅動器的結構及操作可由所屬技術領域的通常知識中獲致足夠的教示、建議與實施說明。
圖7繪示本發明一實施例之電子紙顯示器的驅動方法的步驟流程圖。請參考圖1及圖7，本實施例之驅動方法至少適用於圖1的電子紙顯示器100，惟本發明並不加以限制。以圖1的電子紙顯示器100為例，在步驟S100中，顯示控制器130接收線段輸入信號S1。在步驟S110中，顯示控制器130依據線段輸入信號S1呼叫圖形庫，以產生信號波型組V1、V2及V3。在步驟S120中，顯示控制器130利用信號波型組來驅動電子紙顯示面板110顯示包括多個灰階的線段。另外，本發明之實施例的電子紙顯示器的驅動方法可以由圖1至圖6實施例之敘述中獲致足夠的教示、建議與實施說明。
綜上所述，在本發明的實施例中，為了解決原本的靜態資料庫SWTCON只能畫黑線，所造成在解析度較低的電子紙顯示器上會產生鋸齒狀線段的問題，顯示控制器將靜態資料庫SWTCON中原本用來畫線的函數，改為呼叫安卓系統中的SKIA圖形庫，用以產生含有灰階補償的手寫線段，再搭配使用信號波型組，如此即可畫出較圓滑的線段。
雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明的精神和範圍內，當可作些許的更動與潤飾，故本發明的保護範圍當視後附的申請專利範圍所界定者為準。
100:電子紙顯示器 110:電子紙顯示面板 120:圖形庫 130:顯示控制器 200:手寫線段 210:像素 G0、G10、G20、G30:灰階 S1:線段輸入信號 S100、S110、S120:步驟 V1、V2、V3:驅動信號波形、信號波型組 VDPS、VDNS:電壓
圖1繪示本發明一實施例之電子紙顯示器的概要示意圖。 圖2繪示圖1實施例之電子紙顯示器顯示筆劃輸入的概要示意圖。 圖3繪示圖2實施例之手寫線段的像素的概要示意圖。 圖4、圖5、圖6繪示本發明一實施例之信號波型組的概要示意圖。 圖7繪示本發明一實施例之電子紙顯示器的驅動方法的步驟流程圖。
S100、S110、S120:步驟

Claims (10)

  1. 一種電子紙顯示器，包括：一電子紙顯示面板；一圖形庫；以及一顯示控制器，耦接至該電子紙顯示面板，其中該電子紙顯示器經由該顯示控制器來接收一線段輸入信號，並且當該線段輸入信號被輸入至該電子紙顯示器後，該顯示控制器依據該線段輸入信號來呼叫建置於該電子紙顯示器內的該圖形庫，接下來該顯示控制器基於該線段輸入信號與該圖形庫而產生一信號波型組來驅動該電子紙顯示面板顯示一線段，其中該線段包括至少一個灰階。
  2. 如請求項1所述的電子紙顯示器，其中該灰階包括白色灰階、黑色灰階、一第一灰階及一第二灰階。
  3. 如請求項1所述的電子紙顯示器，其中該圖形庫為二維圖形庫。
  4. 如請求項1所述的電子紙顯示器，其中該圖形庫為SKIA圖形庫。
  5. 如請求項1所述的電子紙顯示器，其中該線段輸入信號為手寫輸入信號或筆寫輸入信號。
  6. 一種電子紙顯示器的驅動方法，包括：由該電子紙顯示器接收一線段輸入信號； 依據該線段輸入信號呼叫建置於該電子紙顯示器內的一圖形庫，以基於該線段輸入信號及該圖形庫產生一信號波型組；以及利用該信號波型組來驅動該電子紙顯示面板顯示一線段，其中該線段包括至少一個灰階。
  7. 如請求項6所述的電子紙顯示器的驅動方法，其中該灰階包括白色灰階、黑色灰階、一第一灰階及一第二灰階。
  8. 如請求項6所述的電子紙顯示器的驅動方法，其中該圖形庫是SKIA圖形庫。
  9. 如請求項6所述的電子紙顯示器的驅動方法，其中該圖形庫是二維圖形庫。
  10. 如請求項6所述的電子紙顯示器的驅動方法，其中該線段輸入信號為手寫輸入信號或筆寫輸入信號。
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