TWI323558B - Apparatus and method for adjusting sound volume - Google Patents

Description

1323558 DESCRIPTION OF THE INVENTION (1) The technical field to which the invention pertains is to use the volume of the sound volume and the value of the moon. The whole invention is related to the volume adjustment device and method, especially regarding the volume of a television and other audio systems. Adjustment device and method. Prior Art Due to human factors or unavoidable objective factors, audio systems such as television or radio reception often play some sudden highs. These sudden highs include advertising sounds and some unexpected noises that TV operators have deliberately increased to attract users' attention. In the daytime or in a lively environment, these sudden highs do not easily interfere with the user. However, in the middle of the night or in a quiet environment, users are very susceptible to interference. In order to solve the aforementioned problems, a conventional method can be found in the U.S. Patent No. 5,130,666, the disclosure of which is incorporated herein by reference. A maximum value and a minimum value, the volume control device and method control the audio signal to be output within the maximum value and the maximum value range, thereby avoiding outputting an audio signal larger than the maximum value to disturb the user. However, after starting the aforementioned volume control mode, the user cannot make a normal volume adjustment. If the user needs to adjust the volume according to personal preference, he/she must first exit the above volume control mode before he can do the 动作 action. As such, the volume control device causes inconvenience to the user. SUMMARY OF THE INVENTION A main object of the present invention is to provide a volume adjusting device that allows a user to adjust the volume according to personal preference without having to exit the aforementioned volume control mode. Another object of the present invention is to provide a volume adjustment method, which is based on the description of the invention (2), so that the user does not need to adjust the volume. In order to be implemented, the audio system packager can be used, and the sounding circuit of the frequency signal includes a switch connected to the first resistor of the second resistor and the second resistor; a second resistor and a second resistor a cathode between the two diodes; another transistor, the emitter of which is connected to the first end; and an integrated circuit between the second resistor and the other end of the resistor. The output of the amplifier is connected to the output terminal of the other end of the amplifier; one, the system. The sound execution circuit includes a device, a pole body cathode, a fourth resistor, and a first pole connected to the first end, and the wheel is connected to the sound, and the negative frequency of the invention provides an output volume frequency modulation and volume adjustment audio signal. The whole device is connected to adjust the wheel resistance, and the anode is connected to the second diode body of the second pole. The cathode of the cathode is connected to the four resistors, and a first resistor thereof is described in the volume control mode. It can be adjusted according to personal preference before the current hair is adjusted to include a large number of the above-mentioned sounds. The frequency of the frequency system is the same; the other end of the three-pole pole is defined by the audio tuner frequency system: and the tuning of the attenuation circuit is a first second body, which is between the first and third; One end is connected to the 'three-resistance amplifier to amplify the same phase. The above-mentioned audio connection frequency system has the third, and its set-side inverter is connected to the frequency converter body, and the first resistor is connected to the input terminal' And the input device. The sound of the volume number includes: a whole circuit for inputting audio to one end of the first one or two poles, and the first two terminals, the fourth, second, fourth, fourth, fourth, and fourth terminals. Set the cutting controller to adjust the load. The: one control sound. The input signal is connected in series between the resistor and the body cathode, and is connected between a resistor body and a male resistor of the three resistor body. The resistor is further connected to the first operational converter.

Page 6 1323558 V. Description of the invention (3): A micro control unit replaces the adjustment circuit; and a non-volatile local audio system: (a) judges (b) if the path to the attenuation switch frequency signal; shut down. The circuit reduces the frequency signal of the audio signal to the output of the sound, so that it passes through the device, and the user implements the TV part two attenuation as a key, and the user connects to the switch and controls the switch. In the cutting operation mode; a RAM, which is connected to the micro control unit and connected to the micro control unit. The step provides a volume adjustment method for adjusting the volume of the audio signal. The method includes the following steps: adjusting whether the device needs to be in the attenuation operation mode; in the attenuation operation mode, controlling the switch to switch the adjustment mode; (c) if not Need to be in the decay mode, control the circuit to the normal operation mode; (_d). Attenuate the input tone and repeat steps (a) to (d) until the audio system (d), if the input audio signal is weak, then Attenuating the linearly attenuated audio signal to the switch; if inputting, the attenuation circuit outputs a nonlinearly attenuated sound. The nonlinear attenuation means that the stronger the input audio signal, the greater the attenuation. The adjustment circuit can effectively reduce the volume of the bursty high sound. The interference to the user in the quiet environment is extremely low. At the same time, the controller is provided to control the audio of the aforementioned audio system to conveniently adjust the volume according to personal preference. The output volume of the Mingjin-I output needs to be switched between the operation mode (e), and the step-out is strong. The switch frequency is clearly mentioned in the middle of the night or the invention can be used. The first figure shows the invention. A schematic diagram of the volume adjustment device 10. The volume adjustment device 10 has a normal operation mode and an industry mode. The mode of operation of the volume adjustment device 10 can be selected by the function of the infrared remote controller 50 or the television panel. The volume adjustment

1323558 V. INSTRUCTION DESCRIPTION (4) The entire device 10 includes a controller 101 and an adjustment circuit 102 for performing volume adjustment. The controller 101 includes a micro control unit 1010, a ram (Random Access Memory) 1012, and an EEPROM (Electrically Erasable Programmable Read-Only Memory) 1014. The RAM 1012 and the EEPROM 1014 are both connected to the micro control unit 1 0 1 0 for storing data. The controller 10 controls the amplification of the audio signal from the audio amplifier 40 of the television. In another embodiment, the EEPROM 1014 described above may be replaced by other non-volatile memory such as ROM., EPROM, Flash..Memory, and the like.

The operation mode of the volume adjustment device 10 determines the operation mode of the aforementioned adjustment circuit 1 〇2. When the volume adjustment means is in the normal operation mode, the adjustment circuit 102 is in the normal operation mode; when the volume adjustment means 1 is in the decay mode, the adjustment circuit 1 〇 2 is in the attenuation operation mode. The adjustment circuit 1 2 includes an attenuation circuit 1 22 and a switch 1 24 for switching the operation mode of the adjustment circuit 102. The attenuation circuit 丨022 and the input end of the switch 1 024 are both connected to the tuner 2 of the television. The output of the attenuating circuit 1022 is coupled to the input of the switch 1〇24. The switch 1 〇 2 4 is connected to the micro control unit i 1 ,, and the micro control unit adjusts the operation mode of the set 1 丨〇丨〇 according to the shirt day 1 to control the operation mode of switching the adjustment circuit 1 〇 2 . The switch 10 24 outputs an audio processor Μ ′ connected to the television and outputs a normal audio signal or a sound signal attenuated by the attenuation circuit 1 〇 22 to the audio processor 3 。. Referring to the second figure, it is a structural diagram of the attenuation circuit 1022 of the volume adjustment device of the present invention. The attenuation circuit 1〇22 includes an integrated operational amplification

Page 8 1323558

KO : Α, resistors R1, R2 ——-TM, D3, and ― electric body τ. The input end of the resistor R1 is connected to the tuner 2〇 of the television, and the output end is connected in series with one end of the resistor R2. Resistor _ ” 丨 丨 H IH and transistor T form a bridge circuit. In the 4, -2 =, D2, the two-pole tilt cathode is connected to the electric 舆 H H J is connected in series: the pole is cut, the second Pole:::polar body D2 anode, two poles _ pole 舆 _ _ other - end body pick up 3: at = output of the amplifier amplifier. Resistance R3 - shot:: the base of the lightning crystal is connected to electricity _舆电_之ί Si

The other end of the door is connected to the cathode of the diode D1, D2 V: yang; pole: read 4 another! Together with the two poles = two m, the inverting input terminal of the integrated operational amplification state A is connected to the resistor R1. The non-inverting input terminal is grounded, and the output terminal is connected to the input terminal of the aforementioned switching benefit 1 024. p 4 & It can be seen from the connection relationship between the two components that the audio signal output by the integrated operation amplification pin is output through the resistors R3, R4, diode D1, 'D2 D3 D4 and transistor T. After the circuit is turned on, it is fed back to the inverting input of the operational amplifier A. That is, the bridge circuit 舆 resistor R2 composed of the resistors, R4, the pole bodies D1, D2, D3, D4 and the transistor T functions as a feedback circuit of the integrated operational amplifier A, and the feedback circuit is negative by their relationship of $ Feedback circuit: ° month and refer to the third figure 'horizontal axis' "Vi" means the audio signal that is turned into the volume adjustment device ^, the vertical axis "Vo" indicates the frequency signal output by the volume adjustment device 1〇 In the horizontal axis, "Vim" indicates input to the volume adjustment device

V. Description of invention (6) 2 Large frequency signal. When the user selects the normal mode of the volume adjusting device 10, the aforementioned micro control unit 1 0 1 0 controls the switch 1 0 2 4 to switch the second circuit 102 to the normal operation mode. At this time, the audio signal is directly input to the switch 1 024, and then output to the audio processor 3 of the television. In this way, after the local households select the volume of their favorite, the various programs, the second and other sounds (including various noises) received by the television are connected to the output audio signal via the volume adjustment device 1 as shown by the dotted line in the figure. Show. That is, in the normal mode, the output audio signal Vo of the volume adjusting device 10 is the same as the input 9-frequency signal Vi. When the fetching operation mode of the volume adjusting device 10 is selected by f, the pre-sound and defensive unit 1010 controls the switch 1 0 2 4 to switch the adjusting circuit 1 0 2 to the mode. At this time, the audio signal is input to the large/drain path 1〇22 of the adjustment circuit 102. The audio signal is input to the inverting input terminal of the integrated operational amplifier through the resistor R1, and amplified by the integrated operational amplifier A, the audio m = the feedback circuit composed of the bridge circuit and the resistor R2 is reversed = the inverting input terminal of the different amplifier A is set. . According to the characteristics of the feedback circuit, when the audio signal of the anti-integration operational amplifier A is weak, the audio signal through the eighth is weaker, and the integrated operational amplifier is not loud by the integrated operation, and can be regarded as having no influence. . Audio signal Input "frequency"; = sex = off: by the volume adjustment please input ^ ^ ^ Ϊ Ϊ Λ Θ frequency afl number is stronger ‘the audio signal of its feedback

Page 10 The stronger. More audio, the more you get from the input, the volume. The linear decay is attenuated by the various sounds of the cut-off, and the front-end manufacturing is attenuated as a 1010-controlled volume adjustment on the board. This integration is achieved because the feedback signal weakens the turn-in. The net input audio ^, and visible by the transmission adjustment device 1 ,, when the wheel is reduced, the round audio frequency is large, no changer 1 0 2 4, the frequency amplifier 40 is placed, the advertisement and the volume ' When the resistor R1 and the e-commerce are actually required in the industry mode, the function of the audio device according to the individual system can also be used as the negative feedback circuit, so the feedback = the audio signal of the integrated operational amplifier A is calculated. The net input audio signal reduction of amplifier A is outputted to the switch 1 024 by the inverting output of the integrated operational amplifier Δ. At this time, the audio signal is output through f input to a nonlinear attenuation relationship. When the frequency signal v i is weak, the attenuation circuit 丨〇 2 2 signal Vi, when the input audio signal Vi is strong, is linearly attenuated. The attenuated audio signal is output to the audio processor 30 of the television, and then played out after being powered up. Therefore, the volume of other sounds (including various noises) played by the TV is avoided by the sudden high pitch. The value of the resistance R2, the resistance r3 and the resistance R4 are determined by the electric power. In the volume adjustment device of the present invention, the volume can be adjusted by the infrared remote controller 5 or the television surface. It is achieved by the magnification of the micro control unit amplifier 40. The present invention is applied to other audio systems, such as radio reception, as shown in the fourth figure, which is a workflow diagram of the volume adjustment method of the present invention. By the function key on the infrared remote controller 50 or the television panel, the user selects the operation mode of the volume adjustment device 10, and in step S51, the micro control unit 1010 determines whether the volume adjustment device 10 needs to be in the decay mode.

Page 11 1323558 V. Description of invention (8). If so, the work flow goes to step S5丨2, otherwise, the work flow goes to step S522. In step S52, the micro control unit 1〇1〇 controls the switch 1〇24 to switch the adjustment circuit 102 to the normal operation mode. At step 5524, switch 1 024 transmits a normal audio signal to audio processor 3A. In the step, the micro control unit 1 0 1 〇 controls the switch 丨〇 2 4 to switch the adjustment circuit 1 〇 2 to the decay mode. In step S514, the attenuation circuit 22 receives the input audio signal. In step S516, the attenuation circuit 1 022 attenuates the input audio signal. If the input signal 2 is weaker, for example, less than a Vil value, the attenuation circuit 1〇22 outputs the linearly attenuated audio signal to the switch 丨〇24. If the input signal Vi is strong, for example, greater than the aforementioned Vil value, the attenuation circuit outputs the audio signal of the J-th reduction to the switch 1〇24. The stronger the nonlinear fading audio, the greater the attenuation of the output audio signal. At step S518, the switch 1 024 transmits the fading to the audio processor 30. < * Silly 曰 汛 直至 Until = turn on the TV ‘The aforementioned workflow will be repeated until the user turns off the TV and stops. In summary, the present invention meets the requirements of the invention patent, 4 @ _ 利申谙. Suppressing ~ Wen 1 dry 'friends according to law - the above mentioned is only the preferred battalion of the invention 丨Μ 丨Μ α Familiar with the technical person I. αΐ ^ ^ ^ 乂隹 乂隹 Α , , 举 举 举The change, the equivalent whitening made by i library in the spirit of invention in t, should be included in the scope of the following patent application.

Page 12 1323558 Brief Description of the Drawings [Simple Description of the Drawings] The first drawing shows a schematic diagram of a television portion having the volume adjusting device of the present invention. The second figure is a structural diagram of the attenuation circuit of the volume adjusting device of the present invention. The third figure is a schematic diagram of the principle of adjusting the volume of the volume adjusting device of the present invention. The fourth figure is a flowchart of the operation of the volume adjustment method of the present invention. [Main component symbol description]

Volume adjustment device 10 Controller 101 Micro control unit 1010 RAM 1012 EEPROM 1014 Adjustment circuit 102 Attenuation circuit 1022 Switch 1024 Tuner 20 Audio processor 30 Audio amplification to 40 IR remote control 50 Page 13

Claims (1)

1323558 Six 'patent application scope 1. A volume adjustment device, j: the frequency signal volume device includes an execution volume adjustment, an attenuation circuit includes a first electrical first, first, second, second, fourth, and fourth , the audio; the sound output by the audio system: 啕 3 weeks 5 white state, the adjustment circuit of the volume adjustment, 兮% M + A, i for:: The whole circuit includes: : minus the audio signal of the wheel, the The attenuation resistor has its input terminal connected to the tuning of the aforementioned audio system: the end of the body is connected to the output terminal of the first resistor; and the body of the body is connected to the pole of the first resistor and the second resistor, and the cathode is first. a diode body connected in series; a pole body having a cathode 舆 a second diode anode and blocking the other end; a pole body having a cathode connected to the second resistor of the first resistor 舆 a second resistor, the terminal being terminated a diode, a first electric device, an electric current collector, a four-electrode terminal, and a crystal emission resistance between the two electrodes; the first body resistance, one end of which is connected to the third resistor and the other end is connected in series, and the other is in the third Polar body, fourth Between the anodes of the pole body; the base thereof is connected between the third resistor and the fourth resistor, the pole is connected to one end of the third resistor, the collector is connected to the first end; and the 'amplifier, the inverting input end thereof Connected to the first _ resistor 第 four page 14 1323558 six, between the second resistor of the patent application range, the non-inverting input terminal is grounded, the output end is connected to the other end of the second resistor; and a switch, the aforementioned audio system The tuner and the output of the integrated operational amplifier are respectively connected to the switch input end, the output end of the switch is connected to the audio processor of the audio system; and a controller is connected to the audio amplifier of the audio system. For controlling the amplification of the audio signal, the controller includes: a micro control unit connected to the switch, and controlling the switch to switch the operation mode of the adjustment circuit; a RAM connected to the micro control unit; And a non-volatile memory connected to the micro control unit; wherein the third resistor, the fourth resistor, the first diode, the second diode, and the third diode The fourth diode and the transistor form a bridge circuit, and the bridge circuit and the second resistor form a negative feedback circuit of the integrated operational amplifier. 2. The volume adjustment device of claim 1, wherein the volume adjustment device has a normal operation mode and an attenuation operation mode. 3. The volume adjustment device of claim 2, wherein the adjustment circuit has a normal operation mode and an attenuation operation mode, and the operation mode of the volume adjustment device determines an operation mode of the adjustment circuit. 4. The volume adjustment device of claim 3, wherein the micro control unit controls the switch to switch the adjustment circuit to the attenuation operation mode when the volume adjustment device is in the attenuation operation mode, and the audio is in the attenuation operation mode. The signal is input to the attenuation circuit and then output via the switch Page 15 1323558 VI. Application for patents To the audio processor of the aforementioned audio system. 5. The volume adjustment device of claim 3, wherein the micro control unit controls the switch to switch the adjustment circuit to a normal operation mode when the volume adjustment device is in a normal operation mode, in the operation mode, The audio signal is input to the switch, and then output to the audio processor of the audio system. 6. The volume adjustment device of claim 5, wherein the audio signal output value is the same as the input value. 7. The volume adjustment device according to claim 1, wherein the non-volatile memory system ROM, EPROM, EEPROM or Flash Memory is a volume adjustment method for adjusting audio by audio. The volume of the audio signal output by the system includes the following steps: (a) determining whether the volume adjustment device needs to be in the attenuation operation mode; (b) if it is required to be in the attenuation operation mode, controlling the switch to switch the adjustment circuit to the attenuation operation mode; (c) if it is not required to be in the decay mode, the control switch switches the adjustment circuit to the normal operating mode; (d) attenuates the input audio signal; and (e) repeats steps (a) through (d) until the aforementioned audio system In step (d), if the input audio signal is weak, the attenuation circuit outputs the linearly attenuated audio signal to the switcher. If the input audio signal is strong, the attenuation circuit output is nonlinearly attenuated. The audio signal to the switch, the nonlinear attenuation refers to the input audio Page 16 1323558 VI. The stronger the patent application range, the greater the attenuation of the output audio signal. 9. The volume adjustment method of claim 8, wherein the step (c) comprises the step of transmitting a normal audio signal to an audio processor of the audio system. 1 〇. The volume adjustment method according to claim 8, wherein the step (d) comprises the step of: receiving an input audio signal. 11. The volume adjustment method of claim 8, wherein the step (e) comprises the step of transmitting the attenuated audio signal to an audio processor of the audio system. Page 17