TWI270295B - Signal auto-detection module and method - Google Patents

Abstract

A signal auto-detection module and a method are described. The signal auto-detection module includes a first analog-to-digital converter, a second analog-to-digital converter, and a processor. When waked by a wake-up signal, the first analog-to-digital converter receives a first analog signal. When waked by the wake-up signal, the second analog-to-digital converter receives a second analog signal. The processor generates the wake-up signal. The processor selects a signal from the first analog signal and the second analog signal as a display signal. The processor examines the display signal to determine whether it is a proper signal before it is displayed.

Description

!27〇2959, invention description: [Technical field to which the invention belongs 1

The invention relates to a signal automatic detection module and method, and in particular to an automatic module and method for a video signal. [Prior Art] Most video and audio playback devices used by general users now receive multiple sources of signals. For example, a TV may be connected to a signal from a DVD, a cable to a cable, a signal from a video tape, or a signal from a CD player. In the past, the user had to use the remote control to decide which input device to select. Most of the options displayed on the TV screen by the remote control are the words of the color difference terminal input, the AV input, and the input of the audio source. For a user who is unfamiliar with the sound and image input format, it is necessary to constantly try each of the four items, and finally find that it is the correct one of the input formats. 'It is quite inconvenient. Therefore, in order to avoid the above problems, it is highly desirable to have a smart signal detecting device that can automatically detect and play signals, exempting the user. [Inventive content] Therefore, the object of the present invention is to provide a signal automatic debt testing module. The group and method can automatically measure whether multiple signal sources have signal input conforming to a specific format. Another purpose of the invention is to provide an automatic signal detection module and method for automatically playing the 5 1270295 signal conforming to a specific format when there is a reduction in the specific format. Another purpose of this service is to provide a very power-saving function for the automatic detection module and method of Jiang/α^ Ά卞 and 八8. According to the above object of the present invention, the next day, the confession (3) enemy automatic detection mode is used for a W-player. The automatic detection module of the Yi Ming Ben Ming Ming Society includes a "February 1 Preferred Embodiment" signal. A digital converter, a second analog-to-digital conversion state, and a processor. When the first analog-to-digital converter When receiving a wake-up signal, the first analog-to-digital converter converts a first cheek to a first digit signal. When the two-digit converter receives the wake-up signal, the second analog-to-digital conversion σσ is converted into an analog signal. a second digit signal. The processor generates the wake-up signal. The processor selects the first digit signal = (four) two digit signals, one of which is a playback signal. The processor checks whether the playback frame conforms to a specific format and then provides audio and video (4) I play. According to an object of the present invention, a method for automatically extracting a signal is provided. According to a preferred embodiment of the present invention, a method for automatically detecting a signal includes the following steps: using a plurality of analog-to-digital converters to connect a plurality of analog signals respectively. Input =. A wake-up signal is sent to wake up at least one analog-to-digital converter. When the 7-field analog-to-digital converter is awakened, such a ratio converter Converting the analog signal of 2 to a digital signal. Checking whether the digital signal conforms to a specific format and then playing it for the video playback device. ^ According to another object of the present invention, an automatic signal detection module 2 is proposed. In a preferred embodiment, the automatic signal detection module includes a first voltage debt measuring circuit, a first analog digital converter, a second voltage detecting circuit, a second digital analog converter, and a processor. 1270295; .I, soil'

— V. :: Voltage detection circuit for detecting the voltage difference of a first analog signal. When the analogy digital converter receives a wake-up signal, the first analogy converts the first analog signal into a - digital signal. The second eMule detects a private path for detecting a voltage difference of a second analog signal. When the second type=digital conversion benefits receiving the wake-up signal, the second analog-to-digital converter converts the second analog signal into a second digital signal. 2, S to generate this wake-up signal. The processor selects the _ digital signal and the first-digit signal, wherein - the playback signal is played by the video playback device. The processor uses the voltage difference of the first analog signal and the voltage difference of the second = specific signal to determine whether the broadcast signal conforms to a specific format and is then played by the video playback device. The first voltage detecting circuit and the second voltage detecting circuit may respectively include a peak hold circuit or a bottom hold circuit. The present invention has at least the following advantages, each of which may have advantages or advantages. The signal automatic detection module and method of the invention, whether the signal sources of the specific format are input or not. When there is a signal input that conforms to a specific format, the automatic signal detection module and the method month b are sufficient to automatically play the signal that meets the specific style. The automatic detection module and method of the present invention can have a very power saving function. Embodiment 1 FIG. 1 is a schematic view showing an application of the present invention. Please refer to the figure. The general user's video playback device 110 usually receives a lot of signal sources, such as satellite receiver signal 102, DVD player signal 1〇4, recording and playback machine, l27〇295, salt 106 or cable TV. Box signal). Since so many signal sources are input to the same video playback device 1 10, a smart and power-saving device is required to process the input signals. Therefore, the present invention provides a signal detection module that can process these signals very conveniently.

Figure 2 is a schematic view showing an embodiment of the present invention. Please refer to FIG. 2 for the automatic signal detection module 200 for a video playback device 224. The signal auto-detection module 200 includes a first analog-to-digital converter 206, a second analog-to-digital converter 208, and a processor 202. A video playback device 224 (e.g., a television) can typically receive a source of many images or sounds. For example, the signal source 226 can be an image source of a DVD player, the signal source 228 can be an image source of a cable television (on-board signal), and the source 230 can be a source of sound for a CD player. In the past, the user had to select the input signal source through the remote control's navigation or the selection button on the TV screen. The invention can utilize the intelligent automatic detection to save the trouble of manual selection. In a consistent embodiment, the video playback device is off, but the processing state 202 periodically scans the analog digital converters 2〇6, 2〇8, and 210. In other words, processor 202 will wake up analog digital converters 206, 208, and 210 in turn to check for signal input. For example, when the user puts the DVD into the DVD player and starts playing, the signal source 226 generates an input signal. At this time, the first analog signal 212 is the signal of the signal source 226. At this point, the processor 202 detects a change in the signal input. When the first analog-to-digital converter 206 receives the wake-up signal 216, the first analog-to-digital converter 206 converts the first analog signal 212 into a first

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1270295 Digital signal 214. The first digital signal 214 is input to a processor 202, and the processor 202 can check whether the first digital signal 214 conforms to a particular mode. If the specific format is met, the video playback device 224 is woken up (on) and the first digital signal 214 is sent to the video playback device 224 as a playback signal 222 for playback. If the specific format is not met, the first digital signal 214 is ignored. After waking up the video playback device 224, the processor 202 can automatically adjust the volume of the video playback device 224 to an appropriate size to avoid sudden loud sounds. The above method of determining whether the first digital signal conforms to a specific format is as follows. Processor 202 can determine the pattern of playback signal 214 to determine if a particular format is met. The processor 202 can check the voltage difference of the playback signal 214 converted by the first analog-to-digital converter 206 to determine whether there is a signal input, and can also check the synchronization signal of the playback signal 214 converted to 206 by the first analog digital conversion. The (sync signal) may also check the frequency of the playback signal 214 converted by the first analog-to-digital converter 206 to determine whether it is an input signal conforming to a specific format, in order to determine whether the input signal conforms to a specific format. Similarly, if the signal source 228 also receives the input signal, when the second analog-to-digital converter 208 receives the wake-up signal 216, the second analog-to-digital converter 208 converts a second analog signal 218 into a second digital signal 22. . The processor 202 also checks if the second digit signal 22 is in a particular format to determine whether to convert the second digit signal 22 into the playback signal 222 for playback by the video playback device 224. The processing state 202 is, for example, a video processor 232 or a microprocessor 2, 3 or an integration of both. When inputting signals

The 1270295 can also have the same function when the source signal is selected. For example, the signal source 230 is an audio signal, and the audio analog signal 234 can be converted into the audio digital signal 236 via the analog digital converter 210, processed by the sound processor 204, and finally sent to the sound output device 238 (eg, π8). . The analog digital converter 210 can also wake up via the wake-up signal 216 before the sound digital signal 236 is detected in accordance with a particular format. The above video playback device may be a television. The above analog digital converters 206, 208, 210 are normally in a closed or standby state, and the power consumed at this time is very small, requiring only a few kilowatts. Upon receipt of the wake-up signal 216, the analog-to-digital converters 206, 208, 210 can begin to operate, converting the analog signal to a digital signal. At this time, the processor 2〇2 also starts to judge the specific format of the digital message 5 tiger. Once the signal input conforming to the special format is found, the processor can immediately wake up the video playback device (224 or 23 8) for playback. This method is very efficient and extremely power efficient. • In another embodiment, the video playback device is playing a number from the source 226, but another source 228 is also input. After checking for a specific format, it is found that the source 228 is also a signal that conforms to a particular format. At this time, the processor 2〇2 displays a screen display (〇SD, on screen display) or a parent window (ριρ, 咖加e, Pkture/P〇P, Picture(10) Picture) for selecting signals on the video playback device 224. The user can pick, choose to maintain the original signal or switch to the new signal. When the time is unselected, this glory display automatically closes the glory. In another embodiment, the processor 202 does not perform an analog digital converter wake-up operation. The wake-up work at this time is carried out by a voltage detecting circuit. Example 1270295 S& 9.211

For example, a first voltage detecting circuit 240 is added before the first digital analog converter 206, and a second voltage detecting circuit 242 is added before the second digital analog converter 2'8. The first voltage detecting circuit 240 detects the voltage peak and bottom value (b〇tt〇m) of the first analog signal 212 to know the voltage difference, and the voltage detecting circuit 240 can wake up the processor 202 to determine. The first analog signal 212 does not conform to a particular format. Similarly, the second voltage detecting circuit 242 can perform the same function. The detection voltage peak and bottom value (b〇u〇m) can be performed using a peak h〇ld circuit or a bottom hold circuit. Any two devices in Figure 2 can use the IIC interface for communication.

The invention also provides a method for automatically detecting a signal for use in a video playback. Section 3 will show a flow chart of an embodiment of the present invention. Please refer to Figure 3, which includes the following steps. A plurality of analog digital converters are used to connect a plurality of analog signals to each other. A wake-up signal is issued to wake up at least one digit analog converter, wherein when the analog converter is awakened, the digital analog converter converts the corresponding analog signal into a digital signal (steps 304, 306, 308). It is checked whether the digital signal conforms to the specific form and is then played by the video playback device (step 314). This flow chart is described in more detail below. The processor issues a call signal to wake up each sleep state analog digital converter (step 304): the analog-to-digital converter scans the input signal source (steps 3-6). Then decide whether there is a signal to lose (steps). If not, the analog digital converter = goes to sleep (step 31G), and scans every other time after entering the sleep state (step 3 ° 4,). If so, it is checked whether the signal is a 4 formatted signal (step 314). If the signal is in a specific cell

I % 9.2H 1270295, then check if the video playback device (such as TV) is active (step 316). If not, the video playback device is woken up (step 318), and the volume is automatically adjusted to an appropriate size (step 32), and then the image is played (step 332). If so, a screen display (cm screen display) or picture in picture (pop picture) is displayed (step 322) for the user to select. If the user has not selected, the screen display is turned off after a period of time (step 328). If the user selects one of the signals, it switches to the selected source (step 33) and then plays (step 332). After the playback, the scratchpad (step 3) sentence is set, and then the analog digital converter that wakes up the sleep and the scanning action are repeated (steps 3丨2, 3〇4, 306). The hardware device corresponding to this flow is as described in the embodiment of Fig. 2. Figure 4 is a diagram showing an example circuit diagram of a peak hold bottom value hold circuit. In the peak hold portion, when the input signal 4〇2 is less than the voltage of the node 404, the switch 412 is turned off (〇ff), and the switch 414 is turned on (〇n), so that the capacitor 406 is at Slow discharge state. When the input signal 4〇2 is greater than the voltage of the node 404, the switch 412 is turned on (〇n), the switch 414 is turned off (off), and the I! is turned on, so that the capacitor 4〇6 is in a fast charging state, and the input signal can be quickly caught up. 4〇2, while holding the peak voltage of the input signal. Where L» 12. In the bottom hold portion, when the input signal 402 is greater than the voltage of the node 408, the switch 422 is turned on (〇n), the switch 424 is turned off (off), and the I3 is turned on, so that the capacitor 418 is in a slow state. . When the input voltage 402 is smaller than the voltage of the node 408, the switch 422 is turned off, the switching 424 is turned on, and the I4 is turned on, so that the capacitor 4 〇 8 is in a fast discharge state, and the input signal 4 can be quickly caught up. 2, and will enter the bottom of the signal 4〇2 12

1270295 value voltage hold ^ peak hold voltage value 428 minus bottom value hold voltage 43 〇 is greater than the reference, press 432 days, comparator 434 will output logic! The signal wakes up the ADC (e.g., the analog to digital converter 206 of Figure 2). _ Figure 5 shows a waveform of a peak hold voltage. With the peak holding portion of the circuit of Fig. 4, the relationship between the input voltage 4〇2 and the peak holding voltage is as shown in Fig. 5. Figure 6 is a block diagram showing the application of the peak value hold circuit. The peak value hold circuit 602 receives an analog signal 6〇8, outputs an output analog signal 61G that has been subjected to the peak value hold, and converts the output analog signal 61〇 into a digital signal through the analog-to-digital converter 6〇6. . The nc circuit can also be used to output the result of the peak value hold circuit 6〇2 to an MCU. FIG. 7 is a flow chart showing an example operation of a peak value holding circuit. First, the peak value hold circuit is reset (steps 7〇2 and 7〇4). Then, the peak and bottom value preservation actions are performed on the input analog signal (step 7〇6), and then the peak hold voltage is determined (the difference between the external sound and the bottom value hold voltage (ottom) is greater than the reference voltage value (Vref) (step 708). If yes, it means that there is a signal input; if it is difficult to perform the peak and bottom value saving operation (step 706), when there is signal input, the signal of aDc (digital analog converter) will be awakened (ADC- Enable) is set to 丨 (step 7 丨〇). A wake-up signal is then sent to an MCU (step 712). Next, it is checked if = DC - Enable = ! or MCU = 1 (step 714). If so, wake up: dc If otherwise, the peak and bottom value save actions are performed (step 706). Figure 8 shows the application of the peak value hold circuit in Figure 2 from 13 1270295 - 3 2rij ··月曰修 (蛳正换页An example operation flowchart of the motion detection module circuit. First, the input peak image holding circuit automatically detects the input image or video signal (step 804, step 804) to determine whether there is a video signal (vide〇signai) input ( Step) right 疋' Go to step 8000; if not, re-use the peak value hold circuit for detection (step 804). If there is video signal input, wake up the MCU and ADC (step 8〇8). Then check the image or video signal source. And a pattern to determine whether the video signal conforms to the specific format (step 810). If the pattern conforms to the specific format, it is detected whether the television is active (step 812). If the pattern conforms to the specific format, it will be re-detected (step 804). If the TV is off, wake up the TV (v 814) ' and lower the volume (step 8丨6). If the TV is on, it will not show OSD (on screen display) and signal source, or display PIP (picture in picture)' or display p〇p (picture〇npicture) for the user to select (step 818). If the user does not respond (n.resp()nse If the time exceeds a predetermined time, the 0SD is turned off (step 828), then the register is set (step 830) 'and then re-detected (step 8〇4). If the user selects a source (step 822), then Switch to the signal source selected by the user (step 824) Then, the video signal is played (step 826), the register is reset (step 83), and then the action of _ is repeated (step 804). Thereby, the user can know at any time: the appearance of the new signal source can also These new sources of signal are conveniently selected on a television screen. One invention has at least the following advantages, each of which may have one or more advantages. The signal automatic detection module and method of the invention can automatically detect whether a plurality of signal sources have signal input conforming to a specific format. Automatic signal detection module and party when there is a signal corresponding to a specific format. 14 1270295

Go to the automatic playback of this signal in a specific format. The automatic detection module and method of the present invention can have a very power saving function. The present invention has been described above in terms of a preferred embodiment, and is not intended to limit the invention, and various modifications and changes may be made without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS In order to make the above and other objects, features, advantages and embodiments of the present invention more obvious, the detailed description of the drawings is as follows: FIG. 1 is a schematic diagram of an application of the present invention; The figure shows a schematic diagram of an embodiment of the present invention; FIG. 3 is a flow chart of an embodiment of the present invention; FIG. 4 is a schematic circuit diagram of a peak hold bottom value holding circuit; Maintaining the waveform of the voltage; • Figure 6 shows the application block diagram of the peak value hold circuit; Figure 7 shows an example action flow chart of the peak value hold circuit; and Figure 8 shows the application of the peak value hold An example operation flow chart of the circuit automatic detection module circuit in the second figure. \ [Main component symbol description], 102: Satellite receiver signal 104: DVD player signal 106: Video recorder signal 200: Signal auto detection module 202: Processor 15 1270295

203 206 210 214 218 222 microprocessor analog analog converter analog digital converter first digital signal second analog signal playback signal 226, 228, 230: signal source 234: sound analog signal 240 · first voltage detection circuit 204: Sound processor 208: second analog digital converter 212: first analog signal 216, wake-up signal 220: second digital signal 224: video playback device 232: image processor 236: sound digital signal 242: second voltage detection Measuring circuit 244, 246, 248, 250: lie interface

402: input signal 406 · capacitor 412: switch 418: capacitor 424: switch 430: bottom value hold voltage 434: comparator 602: peak value hold circuit 61 〇: output analog signal 404 · · node 408: node 414 : Switch 422: Switch 428: When peak hold voltage value 432: Reference voltage 6〇8: analog signal 16

Claims (1)

1270295 平月日修(3⁄4) is replacing the page claiming scope: 1 · The type of automatic detection module is used for an audio-visual playback device. The automatic signal detection module includes: an analog-to-digital converter. When receiving a wake-up signal, the first analog-to-digital converter converts the -first analog signal into a -digit-bit signal; a second analog-to-digital conversion $' when receiving the wake-up signal, the second analog-to-digital converter will Converting a second analog signal to a second digital signal; and processing the benefit, generating the wake-up signal, the processor selecting one of the first digital signal and the second digital signal as a playback signal, the processor checking the Whether the playback signal conforms to a specific format is then played by the video playback device. 2. The signal from the (four) test module described in the application, wherein the processor wakes up the first analog-to-digital converter and the second analog-to-digital converter. ° 3. The signal is automatically detected as described in the scope of the patent application, and further includes a peak voltage threshold voltage holding circuit to check the voltage difference of the broadcast signal to determine whether the broadcast signal conforms to a specific format. U. 4. For the automatic signal measurement module described in item i of the patent application, 17 1270295, wherein the processor checks the 杳 媸 — & & & 播放 播放 播放 播放 播放 播放 播放 sync sync sync sync sync sync sync sync sync sync sync Determine whether the playback signal conforms to a specific style. 5) If the automatic signal extraction module described in item 1 of the patent application scope is used, the frequency of reading the broadcast signal is read and determined to determine whether the broadcast signal conforms to a specific format. The automatic signal detection module described above, the eight middle money check the type of the subtraction signal (pauen^ determines whether the play nickname conforms to the specific format. Gan"·^^Please call the signal described in item 1 of the patent range automatically The detection module, ', " Hai processing is a micro processor. The signal is automatically _ module, ~ analog signal and the second analogy The signal is an image signal and the state is an image processor (vide〇pr〇cess〇r). In the H, please call the automatic signal measurement module described in the first item of the patent scope, the eight-brother-analog signal And the second analog signal is a sound processor - a sound processor (four), do ee read). ^和五亥组, L0· The signal automatic detection mode described in the first item of the patent application scope, ',, the 5 hai video playback device is a television. 18 1270295 f ' 汉厶Η -,................................ 1 /.厂一\ jj ' . • a -....:: - V--» ... ~-.^4 U. The automatic signal detection module of claim 1, wherein before the audio and video device plays the broadcast signal, The processor wakes up the video playback device. 12. The signal auto-detection module as set forth in claim U, wherein the processor adjusts the volume of the Arpeggio playback device to a predetermined value after the processor wakes up the video playback device. A A. The automatic signal measurement module of the invention as claimed in claim 1, wherein when the video playback device plays the first digital signal and the second digital signal is input, the processor displays on the video playback device An on-screen display (OSD) is used to select signals. 14. The automatic signal detection module described in claim 3, wherein the screen display is automatically turned off when the screen display is unselected over a period of time. I5· A method for automatically detecting a signal for an audio-visual playback device. The method for automatically detecting a signal includes: connecting a plurality of analog signal inputs by using a plurality of analog-like digital converters; • issuing a wake-up signal to wake up at least An analog-to-digital converter in which the digital analog converter converts the corresponding analog signal into a digital signal when the wake-up digital converter is awakened; and checks whether the digital signal conforms to a specific format for the video playback device 19 1270295 卞Force w1爹ί table) is playing for the broadcast. ——^ 16. The method for automatically detecting a signal according to claim 15 , wherein the step of checking whether the digital signal conforms to a specific format further comprises: checking a voltage difference of an original analog signal to determine the digital signal Whether it conforms to a specific format.如A method for automatically detecting a signal according to claim 15 wherein the step of checking whether the digital signal conforms to a specific format further comprises: checking a sync signal of the digital signal to determine whether the digital signal is Meets a specific format. 18. The method of automatically detecting a signal according to item 15 of the Shenqing patent scope, wherein the step of checking whether the digital signal conforms to a specific format further comprises: checking a frequency of the digital signal to determine whether the digital signal conforms to a specific format. 19. The method of automatically detecting a signal according to claim 15, wherein the step of checking whether the digital signal conforms to a specific format further comprises: checking a pattern of the digital signal to determine whether the broadcast signal is consistent. Specific format. 20. The method of automatically detecting a signal as described in claim 15 of the scope of the patent application, wherein the analog signals are image signals. 20 1270295 ^ ¥方曰修 (from } is replacing page 21 · The automatic detection signal mentioned in the 15th paragraph of the patent application scope, wherein the analog signals are sound signals. - 22 · If the patent application scope The automatic detection signal of the 15th item is described, wherein the video playback device is a television. 钃 23. The method for automatically detecting a signal according to the scope of the patent application is further included: The method for automatically detecting the signal is as described in claim 23, further comprising: after waking up the video playback device, adjusting the volume of the video playback device to a predetermined time. 25. The method of automatically detecting a signal according to the application of the invention, the method further comprising: displaying a screen display on the video playback device when the digital signal is played and another digital signal is input (〇SD, The method for automatically detecting a signal as described in claim 15 of the patent application, further includes: when playing the digital signal and inputting another digital signal At the time, the video playback device displays a picture (PIP, picture in picture / POP, 21 1270295 9. picture on picture) For selection of signals 27. As described in claim 25, the method further includes: M j When the screen display is not selected for a period of time, it is automatically turned off. The signal side of the screen displays the 28.-tfl automatic debt test module for an audio-visual playback device. The 4-inch automatic detection module includes a first voltage detection circuit. The voltage difference of the first analog signal; a first analog digital converter, when receiving a call ..... analog digital converter converts the first _ • τ Λ ^ cheek than the apostrophe into a first When the number is awakened, the difference is; a voltage detection circuit for detecting a voltage of a first analog signal - a second analog digital converter' when receiving the wake-up signal, the first analogy (4) converting the second analog signal into a digital signal; and processing the signal to generate the wake-up signal, the processor selecting the first number and one of the first digital signals of the .3⁄4 is a playback signal for the video playback The device plays; ^中理理2, using the difference between the (IV) difference of the first analog signal and the voltage difference of the ### A (4) whether the broadcast signal conforms to a specific format and is then played by the video playback device. The automatic signal detection module of claim 28, wherein the processor wakes up the first analog-to-digital conversion state and the second analog-to-digital conversion Device. 3. The automatic signal detection module of claim 28, wherein the first voltage detecting circuit and the second voltage detecting circuit respectively comprise a peak hold circuit. 31. The automatic signal detection module of claim 28, wherein the first voltage detecting circuit and the second voltage measuring circuit are separated from each other by a bottom hold circuit. 32. The automatic signal detection module of claim 28, wherein the first analog signal and the second analog signal are image signals and the processor is an image processor (vide.pn) eessor) . Applying the automatic signal detection mode described in item 28 of the patent scope, and, the first analog signal of the middle class and the second analog signal are sounds and the processor is a voice 立·唬孝曰^§ (audio processor). 34. The automatic signal group described in item 28 of the patent scope is wherein the video broadcast is a television. , 23 1270295 γ ' 1270295 19 Loo L2 n 242 240 )c )c C IIC IIC 208 lie C)c 206 210 236 216 -250 220 216 -248 214 IIC 246 204 238 238 MCU 203 244 232 IIC 202 224 -J 1270295 9:2|ρ·——- Year and month repair (bundle) replacement page 332 1270295 ^ 8.23⁄4 Hundreds:: VII. Designated representative map: (2) The representative figure of the case is ^) 兀仵 兀仵 唬 续 续 g g g g g g · · · · 处理器 处理器 处理器 处理器 处理器 处理器 处理器 处理器 处理器 处理器 处理器 处理器 处理器 处理器 处理器 处理器 处理器 处理器 处理器203 · microprocessor 206: first analog digital converter 210: analog digital converter 214: first digital signal 218: second analog signal 222: broadcast signal 226, 228, 230: signal source 234: sound analog signal 240 First voltage detection circuit 244, 246, 248, 250: IIC interface 204: sound processor 2 〇 8 · second analog digital conversion 212 · first analog signal 216: wake-up signal 220 · second digital signal 224: Video playback device 232: image processor 236: sound digital signal 242: second voltage detection circuit device 8. The chemical formula of the characteristic if there is a chemical formula in this case··