1354982 100年06月20日*梭正替換頁 六、發明說明： 【發明所屬之技術領域】 之影音播放裝置及 [0001] 本發明係關於一種可以自動調節音量 實現自動調節音量之音量控制方法。 【先前技術】 [0002] 由於平板顯示技術的成熟發展，影音播玫筆置 0並 到曰常生活中的各個角落，如可用於私人作 人炀所之平板電 視、用於公眾場所車載顯示器等等。其φ 、’尤其是應用1354982 June 20th, 100th* Shuttle replacement page VI. Description of the invention: [Technical field of the invention] Audio-visual playback device and [0001] The present invention relates to a volume control method capable of automatically adjusting the volume to achieve automatic volume adjustment. [Prior Art] [0002] Due to the mature development of flat panel display technology, audio and video broadcast pens are set to 0 and go to all corners of everyday life, such as flat-panel TVs that can be used in private places, and in-vehicle displays for public places. Wait. Its φ, ' especially the application
於公共場所之影音播放裝置由於其播玫内容活潑生動、 信息量大等優點，已經成為市場上一種主流的宣傳手段 [0003] 一般的影音播放裝置包括一訊號輸入線、_ 貢料處理器 、-顯示裝置及-揚聲器。該訊號輸人線用於由外部接 收所要播放之圖像及聲音之資料訊號。該資料處理器用 於處理接收到的資料訊號並據此控制該顯示袭置顯示所 需圖像及控制該揚聲器播放所需聲音。 剛$，該影音播放裝置—般在有環境噪音㈣％下工作。 如’車載顯示器之環境噪音—般來源為車外喧鬧的街道 、車内談話的乘客以及車輛本身發出的噪音。而在此環 境下，雖然觀眾有可能對影音播放裝置所播放之節目报 感情趣，但是由於環境噪音的影響且該影音播放裝置之 音量不能自動㈣’躲卻聽^到影音播放裝置所播放 之聲音，造成該影音播放裝置使用不方便，不夠人性化 的缺點。 【發明内容】 096151151 表單編號A0101 第4頁/共13頁 1003218849-0 1354982 100年06月20日修正替換頁 [0005] 有鑑於此，提供一種可自動調節音量之影音播放裝置實 為必需。 [0006] 同時，提供一種自動調節音量之音量控制方法亦為必需 〇 [0007] 一種影音播放裝置，其包括一訊號輸入線，用於接收聲 音資料；一揚聲器；一聲音處理單元，用於處理該聲音 資料並驅動該揚聲器播放；一音量控制單元，其包括一 微處理器、一第一查找表及一聲音傳感器，該聲音傳感 器用於感測外界環境噪音強弱並輸出一外部噪音訊號至 該微處理器，該第一查找表中儲存有與該外部噪音訊號 相對應之音量調整訊號，該微處理器用於根據該外部噪 音訊號由該第一查找表中獲得對應之音量調整訊號並輸 入至該聲音處理單元。 [0008] 一種音量控制方法，其步驟包括提供一影音播放裝置， 其包括一聲音傳感器、一微處理器、一聲音處理單元及 • 一揚聲器；藉由該聲音傳感器感測外界噪音強弱並產生 一外部噪音訊號；藉由該微處理器根據該外部噪音訊號 獲得一與其對應之音量調整訊號；藉由該聲音處理單元 根據該音量調整訊號控制該揚聲器之音量。 [0009] 與先前技術相比，本發明之影音播放裝置及其音量控制 方法由於可以感測外界環境之噪音，並根據外界噪音情 況調節該影音播放裝置之音量，故實現了音量的自動調 節，進而使用更為方便。 【實施方式】 096151151 表單編號A0101 第5頁/共13頁 1003218849-0 [0010]1354982 請參閱圖1，係本發明影音播放裝置第一實施方式之電路^ 方框圖。該影音播放裝置1包括一訊號輸入線10、一圖像 處理單元20、一聲音處理單元30、一顯示裝置40、一矯 聲器50及一音量控制單元6〇 ^該訊號輸入線10用於由外 部接收所要播放之圖像及聲音之資料。該圖像處理單元 、 20根據接收到的圖像資料驅動該顯示裝置40顯示對應之 圖像。該聲音處理單元30根據接收到的聲音資料驅動該 揚聲器50播放對應的聲音。該音量控制單元60連接至該 聲音處理單元30，用於根據外界噪音調整該影音播放裝 置1之音量大小。 · [0011] 該音量控制單元60包括一聲音傳感器61、一類比/數位轉 換器62、一微處理器63及一查找表64。該聲音傳感器61 藉由該類比/數位轉換器62連接至該微處理器63，該微處 理器63分別連接至該查找表64及該聲音處理單元30。 [0012] 該聲音傳感器61安裝於該影音播放裝置1外部，用於感剛 外界環境之嗓音強弱’並根據感測到的環境噪音強弱產 生一類比的外部噪音訊號》該類比/數位轉換器62可以將 · 該類比的外部噪音訊號轉換為數位的外部噪音訊號。該 查找表64儲存有與每一數位的外部噪音訊號相對應之音 量調整訊號》該微處理器63可以根據接收到的外部噪音 訊號從該查找表64中獲得對應的音量調整訊號，並輸入 至該聲音處理單元30。該聲音處理單元3〇根據接收到的 該音量調整訊號調整該揚聲器50音量。 [0013] 相較於先前技術，本發明影音播放裝置 量控制單元60，藉由該音量控制單元 1由於採用了該音 之聲音傳感器61 096151151 表單編號A0101 第6頁/共13頁 1003218849-0 1354982 100年06月20日修正替換頁 感測外部環境之噪音，根據外部環境之噪音大小來調整 該影音播放裝置1之音量，進而使該影音播放裝置1使用 方便，更為人性化。 [0014] 該影音播放裝置1所採用之音量控制方法包括如下步驟： [0015] 一、感測外界環境噪音強弱並產生一外部噪音訊號；The audio-visual playback device in public places has become a mainstream propaganda means on the market due to its lively and vivid content and large amount of information. [0003] The general audio-visual playback device includes a signal input line, _ tribute processor, - Display device and - speaker. The signal input line is used to externally receive the data signals of the images and sounds to be played. The data processor is configured to process the received data signal and thereby control the display to display the desired image and control the sound required for the speaker to play. Just $, the video playback device - generally works under ambient noise (four)%. For example, the environmental noise of the on-board display is the noise of the street outside the car, the passengers talking in the car and the vehicle itself. In this environment, although the viewer may be interested in the program played by the audio-visual playback device, due to the influence of environmental noise and the volume of the audio-visual playback device cannot be automatically (4) 'hidden listening to the audio-visual playback device The sound causes the video playback device to be inconvenient and not user-friendly. SUMMARY OF THE INVENTION 096151151 Form No. A0101 Page 4 of 13 1003218849-0 1354982 Correction Replacement Page, June 20, 100 [0005] In view of this, it is necessary to provide a video playback device capable of automatically adjusting the volume. [0006] Meanwhile, it is also necessary to provide a volume control method for automatically adjusting the volume. [0007] An audio-visual playback device includes a signal input line for receiving sound data, a speaker, and a sound processing unit for processing The sound data and driving the speaker to play; a volume control unit comprising a microprocessor, a first lookup table and an acoustic sensor, the sound sensor is configured to sense the ambient noise level and output an external noise signal to the a microprocessor, the first lookup table stores a volume adjustment signal corresponding to the external noise signal, and the microprocessor is configured to obtain a corresponding volume adjustment signal from the first lookup table according to the external noise signal and input the The sound processing unit. [0008] A volume control method, the method comprising the steps of: providing a video playback device, comprising: an audio sensor, a microprocessor, a sound processing unit, and a speaker; sensing the external noise by the sound sensor and generating a An external noise signal; the microprocessor obtains a corresponding volume adjustment signal according to the external noise signal; and the sound processing unit controls the volume of the speaker according to the volume adjustment signal. Compared with the prior art, the audio-visual playback device and the volume control method thereof of the present invention can sense the noise of the external environment and adjust the volume of the audio-visual playback device according to the external noise condition, thereby realizing the automatic adjustment of the volume. It is more convenient to use. [Embodiment] 096151151 Form No. A0101 Page 5 of 13 1003218849-0 [0010] 1354982 Referring to Fig. 1, a circuit block diagram of a first embodiment of a video playback apparatus of the present invention is shown. The video playback device 1 includes a signal input line 10, an image processing unit 20, a sound processing unit 30, a display device 40, a sound corrector 50, and a volume control unit 6. The signal input line 10 is used for The image of the image and sound to be played is received externally. The image processing unit 20 drives the display device 40 to display a corresponding image based on the received image data. The sound processing unit 30 drives the speaker 50 to play a corresponding sound based on the received sound data. The volume control unit 60 is coupled to the sound processing unit 30 for adjusting the volume level of the video playback device 1 in accordance with external noise. [0011] The volume control unit 60 includes an acoustic sensor 61, an analog/digital converter 62, a microprocessor 63, and a lookup table 64. The sound sensor 61 is coupled to the microprocessor 63 by the analog/digital converter 62, which is coupled to the lookup table 64 and the sound processing unit 30, respectively. [0012] The sound sensor 61 is installed outside the video playback device 1 for sensing the intensity of the external environment and generating an analogous external noise signal according to the sensed ambient noise. The analog/digital converter 62 The analog external noise signal can be converted to a digital external noise signal. The lookup table 64 stores a volume adjustment signal corresponding to each digit of the external noise signal. The microprocessor 63 can obtain a corresponding volume adjustment signal from the lookup table 64 according to the received external noise signal, and input to the The sound processing unit 30. The sound processing unit 3 adjusts the volume of the speaker 50 according to the received volume adjustment signal. [0013] Compared with the prior art, the video playback device quantity control unit 60 of the present invention, by the volume control unit 1 adopts the sound sensor 61 096151151, the form number A0101, page 6 / total 13 pages 1003218849-0 1354982 On June 20, 100, the replacement page is corrected to sense the noise of the external environment, and the volume of the video playback device 1 is adjusted according to the noise level of the external environment, thereby making the video playback device 1 more convenient to use and more user-friendly. [0015] The volume control method used by the video playback device 1 includes the following steps: [0015] 1. Sensing the external environment noise and generating an external noise signal;
[0016] 該影音播放裝置1利用該聲音傳感器61感測外界環境噪音 ，並產生一表徵該外界環境噪音強弱之外部噪音訊號。 該聲音傳感器61可以是麥克風。由於該聲音傳感器61輸 出之外部噪音訊號為類比訊號，又由於類比訊號在傳輸 過程中容易衰減且不容易與其他訊號進行比較，故利用 該類比/數位轉換器62將該類比的外部噪音訊號轉換為數 位的外部噪音訊號。 [0017] 二、根據該外部噪音訊號獲得一與其對應的音量調整訊 號； [0018] 該微處理器63接收到該數位的外部噪音訊號，訪問該查 ® 找表64並獲得對應的音量調整訊號，並輸出至該聲音處 理單元30。一般情況下，該查找表64中所儲存之音量調 整訊號所表徵之實際音量大小與其所對應之外部噪音訊 號所表徵之外部噪音強弱成正比，即當外部噪音較強時 ，對應的音量調整訊號表徵之音量較大。該微處理器63 將查詢到的音量調整訊號輸出至該聲音處理單元30。 [0019] 三、根據該音量調整訊號調整影音播放裝置揚聲器之音 量； 1003218849-0 096151151 表單編號A0101 第7頁/共13頁 1354982 r_— 100年06月20日修正替換 [0020] 該聲音處理單元30根據自該微處理器63接收到之音量調 整訊號控制該揚聲器50增大或減小音量。 [0021] 請參閱圖2，係未發明影音播放裝置第二實施方式之結構 方框圖。該影音播放裝置2與該影音播放裝置1之區別在 於：該影音播放裝置2之音量控制單元260進一步包括一 第二查找表265。該第二查找表265中儲存有一聲音即時 強度臨界值。該微處理器263藉由連接至該聲音處理單元 230實現對該影音播放裝置2聲音即時強弱之偵測。[0016] The audio-visual playback device 1 uses the sound sensor 61 to sense ambient noise and generate an external noise signal that characterizes the noise of the external environment. The sound sensor 61 can be a microphone. Since the external noise signal outputted by the sound sensor 61 is an analog signal, and the analog signal is easily attenuated during transmission and is not easily compared with other signals, the analog/digital converter 62 converts the analog external noise signal. A digital external noise signal. [0017] Second, according to the external noise signal to obtain a corresponding volume adjustment signal; [0018] the microprocessor 63 receives the digital external noise signal, access the lookup table 64 and obtain the corresponding volume adjustment signal And output to the sound processing unit 30. In general, the actual volume level represented by the volume adjustment signal stored in the lookup table 64 is proportional to the external noise strength represented by the corresponding external noise signal, that is, when the external noise is strong, the corresponding volume adjustment signal The volume of the representation is large. The microprocessor 63 outputs the queried volume adjustment signal to the sound processing unit 30. [0019] Third, according to the volume adjustment signal to adjust the volume of the audio and video playback device speaker; 1003218849-0 096151151 Form No. A0101 Page 7 / Total 13 Page 1354982 r_- 100 June 20 correction replacement [0020] The sound processing unit The speaker 50 is controlled to increase or decrease the volume based on the volume adjustment signal received from the microprocessor 63. [0021] Referring to Fig. 2, a block diagram showing the structure of a second embodiment of the unaudited video playback apparatus. The video playback device 2 differs from the video playback device 1 in that the volume control unit 260 of the video playback device 2 further includes a second lookup table 265. The second lookup table 265 stores a sound instant strength threshold. The microprocessor 263 realizes the detection of the sound intensity of the video playback device 2 by connecting to the sound processing unit 230.
[0022] 該影音播放裝置2所採用之音量控制方法包括如下步驟： I[0022] The volume control method adopted by the video playback device 2 includes the following steps:
[0023] 一、偵測該影音播放裝置2之聲音即時強弱，獲得一聲音 即時強弱值； [0024] 該微處理器263藉由連接至該聲音處理單元230讀取該聲 音處理單元230中數據，來偵測該影音播放裝置2聲音即 時強弱，並獲得一聲音即時強弱值。 [0025] 二、判斷該聲音即時強弱值與聲音強弱臨界值之大小關 [0026] 該第二查詢表265中儲存之該聲音強弱臨界值表徵一預先 設定的聲音即時強度，該預先設定的聲音即時強度為一 較小的強度。該微處理器263查詢該第二查找表265，獲 得該聲音強弱臨界值，並將聲音即時強弱值與該聲音強 弱臨界值進行對比。當該聲音即時強弱小於該聲音強弱 臨界值時，可認為該影音播放裝置2之聲音即時強度低於 該預先設定的聲音即時強度，該微處理器263便發出一驅 動訊號至該聲音傳感器261使其開始偵測外界環境噪音。 096151151 表單编號 Α0101 第 8 頁/共 13 頁 1003218849-0 100年06月20日按正替換百 1354982 [0027] 三、感測外界環境噪音強弱並產生一外部噪音訊號； [0028] 四、根據該外部噪音訊號獲得一與其對應的音量調整訊 號； [0029] 五、根據該音量調整訊號調整影音播放裝置之揚聲器； [0030] 相較於第一實施方式，該影音播放裝置2由於在其聲音即 時強度較小的情況下才開始偵測外部環境噪音，降低了 該影音播放裝置2自身聲音對該聲音傳感器261之影響， 故對該影音播放裝置2之音量調節更為準確可靠。 [0031] 本發明之影音播放裝置並不限於上述實施方式之所述， 還可具有其他變更設計。如該聲音傳感器61、261可獨立 於該影音播放裝置1、2之整體而設置於距離較遠、使用 者使用位置。此情況下之聲音傳感器可以通過有線或無 線方式與該微處理器連接。該影音播放裝置2還可以同時 具備該影音播放裝置1之該音量控制單元60。 [0032] 综上所述，本發明確已符合發明之要件，爰依法提出專 利申請。惟，以上所述者僅為本發明之較佳實施方式， 本發明之範圍並不以上述實施方式為限，舉凡熟悉本案 技藝之人士援依本發明之精神所作之等效修飾或變化， 皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 [0033] 圖1係本發明影音播放裝置第一實施方式之結構方框圖。 [0034] 圖2係本發明影音播放裝置第二實施方式之結構方框圖。 【主要元件符號說明】 096151151 表單編號A0101 第9頁/共13頁 1003218849-0 1354982 [0035] 影音播放裝置 ：1、 2 [0036] 訊號輸入線： 10 [0037] 圖像處理單元 ：20 [0038] 聲音處理單元 ：30 、230 [0039] 顯示裝置：40 [0040] 揚聲器：50 [0041] 音量控制單元 ：60 、260 [0042] 聲音傳感器： 61、 261 [0043] 類比/數位轉換器： 62 [0044] 微處理器：63 ' 263 [0045] 查找表：64 [0046] 第二查找表： 265 096151151 表單編號A0101 第10頁/共13頁[0023] 1. Detecting the sound intensity of the video playback device 2 to obtain a sound instant strength value; [0024] The microprocessor 263 reads the data in the sound processing unit 230 by connecting to the sound processing unit 230. To detect the sound intensity of the video playback device 2 and obtain a sound instant strength value. [0025] 2. Determine the magnitude of the sound intensity value and the sound intensity threshold value. [0026] The sound intensity threshold value stored in the second lookup table 265 represents a preset sound intensity, the preset sound. The instantaneous intensity is a small intensity. The microprocessor 263 queries the second lookup table 265 to obtain the threshold value of the sound intensity, and compares the sound intensity value with the sound strength threshold. When the sound intensity is less than the sound intensity threshold, the sound intensity of the video playback device 2 is considered to be lower than the preset sound intensity, and the microprocessor 263 sends a driving signal to the sound sensor 261. It began to detect external environmental noise. 096151151 Form No. Α0101 Page 8 of 13 1003218849-0 On June 20, 100, please replace the one hundred and one-figure 1354498 [0027] Third, sense the external environment noise and generate an external noise signal; [0028] The external noise signal obtains a volume adjustment signal corresponding thereto; [0029] 5. adjusting the speaker of the video playback device according to the volume adjustment signal; [0030] compared to the first embodiment, the video playback device 2 is in its sound When the instantaneous intensity is small, the external environment noise is detected, and the influence of the sound of the video playback device 2 on the sound sensor 261 is reduced, so that the volume adjustment of the video playback device 2 is more accurate and reliable. [0031] The video playback device of the present invention is not limited to the above-described embodiments, and may have other modifications. The sound sensors 61, 261 can be disposed at a distance from the user's use position independently of the entirety of the video playback devices 1, 2. The sound sensor in this case can be connected to the microprocessor by wire or wireless. The video playback device 2 can also be provided with the volume control unit 60 of the video playback device 1. [0032] In summary, the present invention has indeed met the requirements of the invention, and the patent application is filed according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS [0033] FIG. 1 is a block diagram showing the configuration of a first embodiment of a video playback device according to the present invention. 2 is a block diagram showing the structure of a second embodiment of the video playback device of the present invention. [Main component symbol description] 096151151 Form number A0101 Page 9/13 page 1003218849-0 1354982 [0035] Video playback device: 1, 2 [0036] Signal input line: 10 [0037] Image processing unit: 20 [0038] ] Sound Processing Unit: 30, 230 [0039] Display Unit: 40 [0040] Speaker: 50 [0041] Volume Control Unit: 60, 260 [0042] Sound Sensor: 61, 261 [0043] Analog/Digital Converter: 62 [0044] Microprocessor: 63 '263 [0045] Lookup Table: 64 [0046] Second Lookup Table: 265 096151151 Form Number A0101 Page 10 of 13
ΙϋΟ年06月20日按正替換W 1003218849-0On the 20th of June, the following is replaced by W 1003218849-0