TWI393358B - Portable computer and filtering noise method thereof - Google Patents
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Description
本發明是有關於一種電源訊號的濾雜訊技術，且特別是有關於一種適用於具有無線通訊模組的可攜式電腦的濾雜訊技術。The present invention relates to a noise filtering technology for a power signal, and more particularly to a filtering noise technology suitable for a portable computer having a wireless communication module.
隨著科技的進步，電腦也日漸普及。特別是，可攜式電腦具備有高度便利性，且幾乎都配置有無線通訊模組，能滿足人們多樣性的需求，更受到人們的青睞。值得一提的是，可攜式電腦使用電池來提供電源，其電池續航力(battery life)仍有相當大的改善空間。如何延長可攜式電腦的電池續航力，已成為了各家廠商的重要課題之一。With the advancement of technology, computers have become increasingly popular. In particular, portable computers are highly convenient and are equipped with wireless communication modules to meet the diverse needs of people and are favored by people. It is worth mentioning that the portable computer uses the battery to provide power, and its battery life still has considerable room for improvement. How to extend the battery life of portable computers has become one of the important topics of various manufacturers.
另外，在障礙物林立的地方，無線通訊模組的收訊品質亦有待改善。不僅如此，可攜式電腦利用無線通訊模組進行無線傳輸時，無線訊號很容易受到高頻雜訊的干擾而影響到收訊品質。為了改善收訊品質，在習知技術中會在可攜式電腦中配置濾雜訊電路，降低雜訊對收訊品質的干擾。然而，濾雜訊電路長時間的運作，會造成電力大量損耗。In addition, in the place where obstacles are everywhere, the quality of wireless communication modules needs to be improved. Moreover, when a portable computer uses a wireless communication module for wireless transmission, the wireless signal is easily interfered by high frequency noise and affects the reception quality. In order to improve the quality of the reception, in the conventional technology, a filter noise circuit is arranged in the portable computer to reduce the interference of the noise on the reception quality. However, the long-term operation of the filter noise circuit causes a large loss of power.
本發明提供一種可攜式電腦，可減少電源消耗，又可降低電源訊號對無線訊號的干擾。The invention provides a portable computer, which can reduce power consumption and reduce interference of power signals on wireless signals.
本發明提供一種濾雜訊方法。在無線訊號收訊不良時時，可強化無線訊號的強度。在無線訊號收訊良好時，可減少電源消耗。The invention provides a filtering noise method. The strength of the wireless signal can be enhanced when the wireless signal reception is poor. Reduce power consumption when wireless signals are received well.
本發明提出一種可攜式電腦，其包括主機板、無線通訊模組與控制模組。主機板包括電源輸入端、低通濾波器與濾雜訊開關。電源輸入端用以接收電源訊號。低通濾波器用以濾除電源訊號的高頻雜訊。濾雜訊開關耦接於低通濾波器與電源輸入端之間，可依據控制訊號致能低通濾波器。無線通訊模組用以無線傳輸無線訊號。控制模組用以偵測無線訊號的強度是否低於預設強度，藉以產生控制訊號。The invention provides a portable computer, which comprises a motherboard, a wireless communication module and a control module. The motherboard includes a power input, a low pass filter, and a filter noise switch. The power input is used to receive the power signal. The low pass filter is used to filter out high frequency noise of the power signal. The filter noise switch is coupled between the low pass filter and the power input end to enable the low pass filter according to the control signal. The wireless communication module is used to wirelessly transmit wireless signals. The control module is configured to detect whether the strength of the wireless signal is lower than a preset intensity, thereby generating a control signal.
在本發明的一實施例中，上述的低通濾波器包括濾波電阻與濾波電容。濾波電阻具有第一端與第二端。濾波電阻的第一端耦接濾雜訊開關。濾波電容具有第一端與第二端。濾波電容的第一端與第二端分別耦接濾波電阻的第二端與接地端。In an embodiment of the invention, the low pass filter includes a filter resistor and a filter capacitor. The filter resistor has a first end and a second end. The first end of the filter resistor is coupled to the filter noise switch. The filter capacitor has a first end and a second end. The first end and the second end of the filter capacitor are respectively coupled to the second end of the filter resistor and the ground end.
在本發明的一實施例中，濾雜訊開關為電晶體。在另一實施例中，無線通訊模組為第三代行動通訊模組或Wi-Fi模組。在又一實施例中，控制模組可整合於無線通訊模組中或主機板中。在更一實施例中，無線通訊模組耦接主機板或整合於主機板中。In an embodiment of the invention, the filter noise switch is a transistor. In another embodiment, the wireless communication module is a third generation mobile communication module or a Wi-Fi module. In yet another embodiment, the control module can be integrated into the wireless communication module or into the motherboard. In a further embodiment, the wireless communication module is coupled to the motherboard or integrated in the motherboard.
從另一角度來看，本發明提出一種可攜式電腦，其包括主機板、無線通訊模組與控制模組。主機板包括電源輸入端第一、第二低通濾波器與第一、第二濾雜訊開關。電源輸入端用以接收電源訊號。第一低通濾波器用以濾除電源訊號的第一高頻雜訊。第一濾雜訊開關耦接於第一低通濾波器與電源輸入端之間，可依據第一控制訊號致能第一低通濾波器。第二低通濾波器用以濾除電源訊號的第二高頻雜訊。第二濾雜訊開關耦接於第二低通濾波器與電源輸入端之間，可依據第二控制訊號致能第二低通濾波器。無線通訊模組用以無線傳輸無線訊號。控制模組用以偵測無線訊號的強度。當無線訊號的強度低於預設強度時，控制模組可偵測無線訊號的頻帶並據以產生第一控制訊號、第二控制訊號及其組合的其中之一。From another point of view, the present invention provides a portable computer comprising a motherboard, a wireless communication module and a control module. The motherboard includes first and second low pass filters and first and second filter noise switches at the power input end. The power input is used to receive the power signal. The first low pass filter is used to filter out the first high frequency noise of the power signal. The first filter noise switch is coupled between the first low pass filter and the power input end, and the first low pass filter is enabled according to the first control signal. The second low pass filter is used to filter out the second high frequency noise of the power signal. The second filter noise switch is coupled between the second low pass filter and the power input end, and the second low pass filter is enabled according to the second control signal. The wireless communication module is used to wirelessly transmit wireless signals. The control module is used to detect the strength of the wireless signal. When the strength of the wireless signal is lower than the preset intensity, the control module can detect the frequency band of the wireless signal and generate one of the first control signal, the second control signal, and a combination thereof.
從又一角度來看，本發明提出一種濾雜訊方法，適用於可攜式電腦。可攜式電腦包括主機板與無線通訊模組。濾雜訊方法包括偵測無線通訊模組所接收的無線訊號的強度是否低於預設強度，藉以產生控制訊號。另外，可依據上述控制訊號決定是否致能低通濾波器，藉以濾除主機板所接收的電源訊號的高頻雜訊。From another perspective, the present invention provides a filtering noise method suitable for a portable computer. The portable computer includes a motherboard and a wireless communication module. The filtering method includes detecting whether the strength of the wireless signal received by the wireless communication module is lower than a preset intensity, thereby generating a control signal. In addition, the low-pass filter can be determined according to the above control signal, so as to filter out the high-frequency noise of the power signal received by the motherboard.
從再一角度來看，本發明提出一種濾雜訊方法，適用於可攜式電腦。可攜式電腦包括主機板與無線通訊模組。濾雜訊方法包括偵測無線通訊模組所接收的無線訊號的強度是否低於預設強度。當無線訊號的強度低於預設強度，可攜式電腦可偵測無線訊號的頻帶，並據以產生多個控制訊號及其組合的其中之一，其中上述控制訊號分別對應一低通濾波器。另外，可依據上述產生的控制訊號致能上述對應的低通濾波器，藉以濾除主機板所接收的電源訊號的高頻雜訊。From another point of view, the present invention proposes a filtering noise method suitable for a portable computer. The portable computer includes a motherboard and a wireless communication module. The filtering method includes detecting whether the strength of the wireless signal received by the wireless communication module is lower than a preset intensity. When the strength of the wireless signal is lower than the preset intensity, the portable computer can detect the frequency band of the wireless signal and generate one of a plurality of control signals and a combination thereof, wherein the control signals respectively correspond to a low pass filter . In addition, the corresponding low-pass filter can be enabled according to the control signal generated above, so as to filter out high-frequency noise of the power signal received by the motherboard.
基於上述，本發明藉由偵測無線訊號的強度來決定是否對電源訊號進行低通濾波處理。進行低通濾波處理的情況下，可降低電源訊號對無線訊號的干擾。沒有進行低通濾波處理的情況下，可維持電源訊號的電源效率。Based on the above, the present invention determines whether to perform low-pass filtering processing on the power signal by detecting the strength of the wireless signal. In the case of low-pass filtering, the interference of the power signal to the wireless signal can be reduced. The power supply efficiency of the power signal can be maintained without performing low-pass filtering.
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。The above described features and advantages of the invention will be apparent from the following description.
習知的可攜式電腦有收訊品質易受到雜訊干擾的缺點，若採用濾雜訊電路又會造成大量的電力消耗。The conventional portable computer has the disadvantage that the receiving quality is susceptible to noise interference, and the use of the filtering noise circuit causes a large amount of power consumption.
反觀，在本發明的實施例中，可攜式電腦可偵測無線通訊模組的收訊品質，藉以決定是否啟動濾雜訊電路(例如低通濾波器)。更具體地說，若無線訊號的強度不良時，可啟動濾雜訊電路來濾除電源訊號的高頻雜訊，降低電源訊號的高頻雜訊對無線信號的干擾，藉以改善無線信號的強度。若無線訊號的強度良好時，代表無線訊號並不易受到雜訊干擾，此時可關閉濾雜訊電路，藉以延長可攜式電腦的電池續航力。如此一來，不但可有效延長電池續航力，當無線訊號的收訊品質不良時也可獲得改善。下面將參考附圖詳細闡述本發明的實施例，附圖舉例說明了本發明的示範實施例，其中相同標號指示同樣或相似的步驟。In contrast, in the embodiment of the present invention, the portable computer can detect the receiving quality of the wireless communication module, thereby determining whether to activate the filtering noise circuit (for example, a low-pass filter). More specifically, if the strength of the wireless signal is poor, the filtering noise circuit can be activated to filter the high frequency noise of the power signal, and the high frequency noise of the power signal is reduced to interfere with the wireless signal, thereby improving the strength of the wireless signal. . If the strength of the wireless signal is good, it means that the wireless signal is not susceptible to noise interference. At this time, the filter noise circuit can be turned off to extend the battery life of the portable computer. In this way, not only can the battery life be effectively extended, but also the wireless signal receiving quality can be improved. The embodiments of the present invention are explained in detail below with reference to the accompanying drawings, in which FIG.
圖1是依照本發明的第一實施例的一種可攜式電腦的示意圖。請參照圖1，可攜式電腦10包括主機板20、無線通訊模組30與控制模組40。主機板20可包括電源輸入端IN、濾雜訊開關51、52與低通濾波器61、62。1 is a schematic diagram of a portable computer in accordance with a first embodiment of the present invention. Referring to FIG. 1 , the portable computer 10 includes a motherboard 20 , a wireless communication module 30 , and a control module 40 . The motherboard 20 can include a power input IN, a filter noise switch 51, 52, and low pass filters 61, 62.
無線通訊模組30耦接控制模組40。控制模組40耦接濾雜訊開關51、52。電源供應電路70耦接電源輸入端IN。濾雜訊開關51耦接於電源輸入端IN與低通濾波器61之間。濾雜訊開關52耦接於電源輸入端IN與低通濾波器62之間。The wireless communication module 30 is coupled to the control module 40. The control module 40 is coupled to the filter noise switches 51 and 52. The power supply circuit 70 is coupled to the power input terminal IN. The filter noise switch 51 is coupled between the power input terminal IN and the low pass filter 61. The filter noise switch 52 is coupled between the power input terminal IN and the low pass filter 62.
無線通訊模組30可用來收發無線訊號WS，藉以跟外部裝置(未繪示)進行無線通訊。在本實施例中，無線通訊模組30例如是第三代行動(3rd-generation，3G)通訊模組，但本發明並不以此為限。無線通訊模組30的操作頻段例如是800、900、1800、1900、2100MHz。控制模組40可用來偵測無線訊號WS的訊號強度及其頻帶(frequency band)，並可產生控制訊號CS1、CS2。The wireless communication module 30 can be used to send and receive wireless signals WS for wireless communication with an external device (not shown). In this embodiment, the wireless communication module 30 is, for example, a third-generation (3G) communication module, but the invention is not limited thereto. The operating frequency bands of the wireless communication module 30 are, for example, 800, 900, 1800, 1900, 2100 MHz. The control module 40 can be used to detect the signal strength of the wireless signal WS and its frequency band, and can generate the control signals CS1 and CS2.
電源供應電路70可提供電源訊號PS至電源輸入端IN。濾雜訊開關51可依據控制訊號CS1致能或禁能低通濾波器61。濾雜訊開關52可依據控制訊號CS2致能或禁能低通濾波器62。低通濾波器61、62可用來對電源輸入端IN所接收到電源訊號PS進行低通濾波處理，藉以濾除電源訊號PS的高頻雜訊。請注意，電源訊號PS的高頻雜訊會對無線訊號WS造成干擾。因此濾除電源訊號PS的高頻雜訊可有效提升無線訊號WS的訊雜比。在本實施例中，低通濾波器61、62可用來濾除不同頻帶的高頻雜訊。以下作更詳細的說明。The power supply circuit 70 can provide a power signal PS to a power input IN. The filter noise switch 51 can enable or disable the low pass filter 61 according to the control signal CS1. The filter noise switch 52 can enable or disable the low pass filter 62 according to the control signal CS2. The low-pass filters 61 and 62 can be used to perform low-pass filtering on the power signal PS received by the power input terminal IN, thereby filtering out the high-frequency noise of the power signal PS. Please note that the high frequency noise of the power signal PS will cause interference to the wireless signal WS. Therefore, filtering the high frequency noise of the power signal PS can effectively improve the signal to noise ratio of the wireless signal WS. In this embodiment, the low pass filters 61, 62 can be used to filter high frequency noise in different frequency bands. The following is a more detailed description.
圖2是依照本發明的第一實施例的一種濾雜訊開關與低通濾波器的電路圖。圖3是依照本發明的第一實施例的一種低通濾波器61的頻率響應的示意圖。圖4是依照本發明的第一實施例的一種低通濾波器62的頻率響應的示意圖。請合併參照圖1～圖4，在本實施例中，濾雜訊開關51、52例如可用電晶體511、521實施。低通濾波器61例如可用電阻611與電容612實施。低通濾波器62例如可用電阻621與電容622實施。在本實施例中，低通濾波器可配合無線通訊模組30所使用的頻帶進行對應的濾雜訊處理。2 is a circuit diagram of a filter noise switch and a low pass filter in accordance with a first embodiment of the present invention. 3 is a schematic diagram of the frequency response of a low pass filter 61 in accordance with a first embodiment of the present invention. 4 is a schematic diagram of the frequency response of a low pass filter 62 in accordance with a first embodiment of the present invention. Referring to FIG. 1 to FIG. 4 in combination, in the present embodiment, the filter noise switches 51 and 52 can be implemented by, for example, the transistors 511 and 521. The low pass filter 61 can be implemented, for example, by a resistor 611 and a capacitor 612. The low pass filter 62 can be implemented, for example, by a resistor 621 and a capacitor 622. In this embodiment, the low pass filter can perform corresponding filtering and noise processing in accordance with the frequency band used by the wireless communication module 30.
舉例來說，低通濾波器61的截止頻率例如是落於900MHz。低通濾波器62的截止頻率例如是落於1800MHz。但本發明並不以此為限，在其他實施例中低通濾波器61、62的截止頻率也可以是其他頻率。熟習本領域技術者可依其需求改變電阻的阻值與電容的電容值，使低通濾波器61、62具有不同的截止頻率。For example, the cutoff frequency of the low pass filter 61 is, for example, falling at 900 MHz. The cutoff frequency of the low pass filter 62 is, for example, falling at 1800 MHz. However, the present invention is not limited thereto. In other embodiments, the cutoff frequencies of the low pass filters 61, 62 may also be other frequencies. Those skilled in the art can change the resistance of the resistor and the capacitance of the capacitor according to their needs, so that the low pass filters 61, 62 have different cutoff frequencies.
另外，本實施例中低通濾波器61、62雖以一個電阻與一個電容為例進行說明，但本發明並不以此為限。熟習本領域技術者亦可採用其他方式實施低通濾波器，例如亦可用多階架構的濾波器來實施低通濾波器。In addition, although the low-pass filters 61 and 62 in the present embodiment are described by taking one resistor and one capacitor as an example, the present invention is not limited thereto. Those skilled in the art can also implement low-pass filters in other ways. For example, filters of multi-stage architecture can also be used to implement low-pass filters.
圖5是依照本發明的第一實施例的一種濾雜訊方法的流程圖。請合併參照圖1、圖2與圖5，首先可由步驟S501，控制模組40偵測無線通訊模組30所收發的無線訊號WS的強度是否低於預設強度。更具體地說，在本實施例中，無線訊號WS的強度可分為優良、良好與不良三個等級。當無線訊號WS的強度為優良或良好時，代表無線訊號WS的強度高於預設強度，可接續執行步驟S502。當無線訊號WS的強度為不良時，代表無線訊號WS的強度低於預設強度，可接續執行步驟S503。需注意的是，在其他實施例中，熟習本領域技術者也可依其需求改變無線訊號的強度分級方式以及預設強度。Figure 5 is a flow chart of a method of filtering noise in accordance with a first embodiment of the present invention. Referring to FIG. 1 , FIG. 2 and FIG. 5 , the control module 40 can detect whether the strength of the wireless signal WS transmitted and received by the wireless communication module 30 is lower than a preset strength. More specifically, in the present embodiment, the strength of the wireless signal WS can be classified into three levels of excellent, good and bad. When the strength of the wireless signal WS is good or good, the intensity of the wireless signal WS is higher than the preset strength, and step S502 can be performed. When the strength of the wireless signal WS is bad, the intensity of the wireless signal WS is lower than the preset strength, and step S503 can be performed. It should be noted that in other embodiments, those skilled in the art can also change the intensity classification mode and preset strength of the wireless signal according to the requirements.
在步驟S502中，控制模組40禁能各低通濾波器(61、62)，藉以降低耗電量。更具體地說，控制模組40可產生控制訊號CS1、CS2，藉以截止電晶體511、521。一旦電晶體511、521截止，低通濾波器61、62則會處於禁能狀態。In step S502, the control module 40 disables the low pass filters (61, 62) to reduce power consumption. More specifically, the control module 40 can generate control signals CS1, CS2 to turn off the transistors 511, 521. Once the transistors 511, 521 are turned off, the low pass filters 61, 62 are disabled.
在步驟S503中，控制模組40可進一步地偵測無線訊號WS所使用的頻帶藉以產生對應的控制訊號CS1、CS2、及其組合的其中之一。並可接續步驟S504，依據上述產生的控制訊號藉以致能對應的低通濾波器，藉以濾除主機板20所接收的電源訊號PS的高頻雜訊。更具體地說，當無線訊號WS所使用的頻帶為1800、1900、2100MHz時，控制模組40可透過控制訊號CS1禁能低通濾波器61，並透過控制訊號CS2致能低通濾波器62。如此可有效濾除電源訊號PS中頻率高於1800MHz的高頻雜訊。In step S503, the control module 40 can further detect one of the corresponding control signals CS1, CS2, and a combination thereof by using the frequency band used by the wireless signal WS. In step S504, the corresponding low-pass filter is enabled according to the generated control signal, so as to filter out the high-frequency noise of the power signal PS received by the motherboard 20. More specifically, when the frequency band used by the wireless signal WS is 1800, 1900, and 2100 MHz, the control module 40 can disable the low-pass filter 61 through the control signal CS1 and enable the low-pass filter 62 through the control signal CS2. . This effectively filters out high frequency noise in the power signal PS above 1800MHz.
當無線訊號WS所使用的頻帶為800、900MHz時，控制模組40可透過控制訊號CS1致能低通濾波器61，並透過控制訊號CS2禁能低通濾波器62。如此可有效濾除電源訊號PS中頻率高於900MHz的高頻雜訊。When the frequency band used by the wireless signal WS is 800 or 900 MHz, the control module 40 can enable the low pass filter 61 through the control signal CS1 and disable the low pass filter 62 through the control signal CS2. This effectively filters out high frequency noise in the power signal PS at frequencies above 900 MHz.
在另一實施例中，當無線訊號WS所使用的頻帶為800、900MHz時，控制模組40也可透過控制訊號CS1與CS2一併致能低通濾波器61與62。如此可加強濾除電源訊號PS中頻率高於900MHz的高頻雜訊。In another embodiment, when the frequency band used by the wireless signal WS is 800, 900 MHz, the control module 40 can also enable the low pass filters 61 and 62 through the control signals CS1 and CS2. This enhances the filtering of high frequency noise at frequencies above 900 MHz in the power signal PS.
雖然上述實施例中已經對可攜式電腦與濾雜訊方法描繪出了一個可能的型態，但所屬技術領域中具有通常知識者應當知道，各廠商對於可攜式電腦與濾雜訊方法的設計都不一樣，因此本發明的應用當不限制於此種可能的型態。換言之，只要是偵測無線通訊模組的無線訊號的強度，並據以決定是否對電源訊號進行濾雜訊處理，就已經是符合了本發明的精神所在。以下再舉幾個實施例以便本領域具有通常知識者能夠更進一步的了解本發明的精神，並實施本發明。Although the above embodiments have portrayed a possible type of portable computer and filtering noise method, those skilled in the art should be aware of the various manufacturers' methods for portable computers and filtering noise. The design is different, so the application of the invention is not limited to this possible type. In other words, as long as it is detecting the strength of the wireless signal of the wireless communication module, and determining whether to perform noise filtering on the power signal, it is in line with the spirit of the present invention. The following examples are presented to enable those of ordinary skill in the art to understand the invention and practice the invention.
在第一實施例中，可攜式電腦雖使用了兩個濾雜訊開關、兩個低通濾波器，但本發明並不以此為限。在其他實施例中，熟習本領域技術者也可採用一個或三個以上的濾雜訊開關與低通濾波器來實施可攜式電腦。舉例來說，圖6是依照本發明的第二實施例的一種可攜式電腦的示意圖。圖7是依照本發明的第二實施例的一種濾雜訊方法的流程圖。In the first embodiment, the portable computer uses two filter noise switches and two low-pass filters, but the invention is not limited thereto. In other embodiments, those skilled in the art may also implement one or more of the filter noise switch and the low pass filter to implement the portable computer. For example, Figure 6 is a schematic illustration of a portable computer in accordance with a second embodiment of the present invention. Figure 7 is a flow chart of a method of filtering noise in accordance with a second embodiment of the present invention.
請合併參照圖6與圖7，在本實施例中，可攜式電腦11的主機板21配置一個濾雜訊開關51與一個低通濾波器61。如此一來，可簡化可攜式電腦的架構也可簡化濾雜訊的方法。首先可由步驟S701，控制模組40偵測無線通訊模組30所接收的無線訊號WS的強度是否低於預設強度。無線訊號WS的強度若高於預設強度則接續步驟S702，控制模組40透過控制訊號CS1截止濾雜訊開關51藉以禁能低通濾波器61。如此一來可降低耗電量。Referring to FIG. 6 and FIG. 7 together, in the embodiment, the motherboard 21 of the portable computer 11 is provided with a filter noise switch 51 and a low pass filter 61. In this way, the architecture of the portable computer can be simplified and the method of filtering noise can be simplified. First, in step S701, the control module 40 detects whether the strength of the wireless signal WS received by the wireless communication module 30 is lower than a preset strength. If the intensity of the wireless signal WS is higher than the preset intensity, the step S702 is continued. The control module 40 disables the low-pass filter 61 by cutting the filter noise switch 51 through the control signal CS1. This will reduce power consumption.
反之，無線訊號WS的強度若低於預設強度則接續步驟S703，控制模組40透過控制訊號CS1導通濾雜訊開關51藉以致能低通濾波器61。如此一來可濾除電源訊號PS的高頻雜訊，藉以提升無線訊號WS的訊雜比。On the other hand, if the strength of the wireless signal WS is lower than the preset intensity, the control module 40 turns on the filter noise switch 51 through the control signal CS1 to enable the low-pass filter 61. In this way, the high frequency noise of the power signal PS can be filtered out, thereby improving the signal to noise ratio of the wireless signal WS.
另外，圖1的可攜式電腦的架構僅是一種選擇實施例，本發明並不以此為限。舉例來說，在其他實施例中，控制模組可整合於無線通訊模組中。圖8是依照本發明的第三實施例的一種無線通訊模組的示意圖。在本實施例中，控制模組(未繪示)整合於無線通訊模組31中。由於無線通訊模組31具有許多未使用的腳位，因此可使用兩個未使用的腳位來輸出控制訊號CS1、CS2。如此亦可達成與第一實施例相類似的功效。在另一實施例中，控制模組亦可整合於主機板中。同理，在又一實施例中，無線通訊模組亦可整合於主機板中。In addition, the architecture of the portable computer of FIG. 1 is only an optional embodiment, and the present invention is not limited thereto. For example, in other embodiments, the control module can be integrated into the wireless communication module. FIG. 8 is a schematic diagram of a wireless communication module in accordance with a third embodiment of the present invention. In this embodiment, a control module (not shown) is integrated in the wireless communication module 31. Since the wireless communication module 31 has many unused pins, two unused pins can be used to output the control signals CS1, CS2. This also achieves similar effects to the first embodiment. In another embodiment, the control module can also be integrated into the motherboard. Similarly, in another embodiment, the wireless communication module can also be integrated into the motherboard.
在圖1的實施例中，無線通訊模組30雖以3G通訊模組為例進行說明。但在其他實施例中無線通訊模組30也可以是其他類型的通訊模組，例如可為WiFi通訊模組。熟習本領域技術者可對應改變低通濾波器的截止頻率。如此亦可達成與第一實施例相類似的效果。In the embodiment of FIG. 1, the wireless communication module 30 is described by taking a 3G communication module as an example. In other embodiments, the wireless communication module 30 can also be other types of communication modules, such as a WiFi communication module. Those skilled in the art can correspondingly change the cutoff frequency of the low pass filter. Thus, effects similar to those of the first embodiment can be achieved.
綜上所述，本發明的可攜式電腦可偵測無訊訊號的強度。當無線訊號的強度低於預設強度時，可致能低通濾波器藉以對電源訊號進行低通濾波處理。如此可降低電源訊號的高頻雜訊對無線訊號所造成的干擾。當無線訊號的強度高於預設強度時，可禁能低通濾波器。如此可降低耗電量，藉以提升可攜式電腦的電池續航力。另外，本發明的實施例還具有下列功效：In summary, the portable computer of the present invention can detect the intensity of no signal. When the strength of the wireless signal is lower than the preset intensity, the low-pass filter can be enabled to perform low-pass filtering on the power signal. This can reduce the interference caused by the high frequency noise of the power signal to the wireless signal. When the strength of the wireless signal is higher than the preset intensity, the low-pass filter can be disabled. This reduces power consumption and increases the battery life of the portable computer. In addition, embodiments of the present invention have the following effects:
1.在可攜式電腦中配置多個具有不同截止頻率的低通濾波器。可針對無線訊號所使用的頻帶而選擇式地致能對應的低通濾波器，藉以濾除電源訊號的高頻雜訊。如此可有效地提升無線訊號的訊雜比。1. Configure multiple low-pass filters with different cutoff frequencies in the portable computer. The corresponding low-pass filter can be selectively enabled for the frequency band used by the wireless signal to filter out the high frequency noise of the power signal. This can effectively improve the signal-to-noise ratio of the wireless signal.
2.低通濾波器可採用一階或多階濾波器，藉以提升濾雜訊效果。2. The low-pass filter can use a first-order or multi-order filter to improve the noise filtering effect.
3.同時致能多個低通濾波器，可進一步地加強濾雜訊效果。3. Simultaneously enable multiple low-pass filters to further enhance the noise filtering effect.
4.將控制模組、無線通訊模組及/或主機板進行整合可簡化架構。4. Integration of control modules, wireless communication modules and/or motherboards simplifies the architecture.
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。Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and those skilled in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.
10、11．．．可攜式電腦10, 11. . . Portable computer
20、21．．．主機板20, 21. . . motherboard
30、31．．．無線通訊模組30, 31. . . Wireless communication module
40．．．控制模組40. . . Control module
51、52．．．濾雜訊開關51, 52. . . Filter noise switch
61、62．．．低通濾波器61, 62. . . Low pass filter
70．．．電源供應電路70. . . Power supply circuit
511、521．．．電晶體511, 521. . . Transistor
611、621．．．電阻611, 621. . . resistance
612、622．．．電容612, 622. . . capacitance
S501～S504、S701～S703．．．濾雜訊方法的各步驟S501～S504, S701～S703. . . Steps of filtering noise methods
IN．．．電源輸入端IN. . . Power input
PS．．．電源訊號PS. . . Power signal
CS1、CS2．．．控制訊號CS1, CS2. . . Control signal
WS．．．無線訊號WS. . . Wireless signal
圖1是依照本發明的第一實施例的一種可攜式電腦的示意圖。1 is a schematic diagram of a portable computer in accordance with a first embodiment of the present invention.
圖2是依照本發明的第一實施例的一種濾雜訊開關與低通濾波器的電路圖。2 is a circuit diagram of a filter noise switch and a low pass filter in accordance with a first embodiment of the present invention.
圖3是依照本發明的第一實施例的一種低通濾波器61的頻率響應的示意圖。3 is a schematic diagram of the frequency response of a low pass filter 61 in accordance with a first embodiment of the present invention.
圖4是依照本發明的第一實施例的一種低通濾波器62的頻率響應的示意圖。4 is a schematic diagram of the frequency response of a low pass filter 62 in accordance with a first embodiment of the present invention.
圖5是依照本發明的第一實施例的一種濾雜訊方法的流程圖。Figure 5 is a flow chart of a method of filtering noise in accordance with a first embodiment of the present invention.
圖6是依照本發明的第二實施例的一種可攜式電腦的示意圖。Figure 6 is a schematic illustration of a portable computer in accordance with a second embodiment of the present invention.
圖7是依照本發明的第二實施例的一種濾雜訊方法的流程圖。Figure 7 is a flow chart of a method of filtering noise in accordance with a second embodiment of the present invention.
圖8是依照本發明的第三實施例的一種無線通訊模組的示意圖。FIG. 8 is a schematic diagram of a wireless communication module in accordance with a third embodiment of the present invention.
10．．．可攜式電腦10. . . Portable computer
20．．．主機板20. . . motherboard
30．．．無線通訊模組30. . . Wireless communication module
40．．．控制模組40. . . Control module
51、52．．．濾雜訊開關51, 52. . . Filter noise switch
61、62．．．低通濾波器61, 62. . . Low pass filter
70．．．電源供應電路70. . . Power supply circuit
IN．．．電源輸入端IN. . . Power input
PS．．．電源訊號PS. . . Power signal
CS1、CS2．．．控制訊號CS1, CS2. . . Control signal
WS．．．無線訊號WS. . . Wireless signal
Claims (9)
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