CN100438597C - Sound volume adjusting apparatus and method - Google Patents
Sound volume adjusting apparatus and method Download PDFInfo
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- CN100438597C CN100438597C CNB2004100153713A CN200410015371A CN100438597C CN 100438597 C CN100438597 C CN 100438597C CN B2004100153713 A CNB2004100153713 A CN B2004100153713A CN 200410015371 A CN200410015371 A CN 200410015371A CN 100438597 C CN100438597 C CN 100438597C
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Abstract
The present invention relates to a volume regulating device for regulating the volume of an audio signal output by an audio system. The present invention relates to a controller which is connected with an audio amplifier of the audio system, an audio processor, a regulating circuit and a communication port, wherein the controller comprises a micro control unit, an RAM which is communicated with the micro control unit, and a nonvolatile storage which is communicated with the micro control unit; the regulating circuit comprises a regulator and a switcher; the regulator is connected with the audio processor, and the output of an audio signal of the regulator is controlled by the audio processor; the switcher is connected to the audio processor. The regulator and the micro control unit are connected to the switcher, and the operating mode of a regulating circuit can be switched over by the micro control unit controlling the switcher. With the adoption of the volume regulating device provided by the present invention, users can not only regulate the volume according to person habits but also can avoid the interference of abrupt high volume. The present invention also provides a relevant volume regulating method.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to a volume adjustment device and method, and more particularly, to a volume adjustment device and method for a television and other audio systems.
[ background of the invention ]
Audio systems such as television or radio receivers often play some sudden high tones due to artifacts or other unavoidable objective factors. The sudden high pitch includes the volume of the advertisement which is purposely increased by the television operator to attract the attention of the user, and some unexpected noise. Such sudden treble is less likely to interfere with the user during daytime or in hot environments. However, in late night or quiet environments, users are susceptible to interference.
To solve the above-mentioned problem, a conventional method can be found in us 5,130,665 issued on 14.07.1992, which discloses a volume control apparatus and method for controlling an audio signal to be output within a range of a maximum value and a minimum value by a user setting the maximum value and the minimum value, thereby preventing the audio signal larger than the maximum value from being output to disturb the user. However, after the volume control mode is activated, the user cannot make normal volume adjustments. If the user needs to adjust the volume according to his/her preference, he/she must exit the volume control mode before doing the adjustment. Thus, the volume control device causes inconvenience to the user.
[ summary of the invention ]
In view of the above-mentioned deficiencies of the prior art, the present invention is directed to a volume adjustment device and method for enabling a user to perform a normal volume adjustment without exiting a volume control mode.
To achieve the object of the present invention, the present invention provides a volume adjusting apparatus for adjusting a volume of an audio signal output by an audio system. The volume adjusting device comprises a controller which is connected with an audio amplifier of the audio system; an audio processor; an adjusting circuit and a communication port. The controller comprises a micro-control unit; a RAM in communication with the micro-control unit; and a non-volatile memory in communication with the micro-control unit. The adjusting circuit comprises an adjuster which is connected with the audio processor and controls the output of the audio signal by the audio processor; and a switch connected to the audio processor. The regulator and the micro control unit are connected to the switcher, and the micro control unit controls the switcher to switch the working mode of the regulating circuit.
The present invention further provides a volume adjustment method for adjusting the volume of an audio signal output by an audio system. The method comprises the following steps: (a) judging whether the volume adjusting device is in an attenuation working mode or not; (b) if the circuit is in the attenuation working mode, the control switcher switches the adjusting circuit to the attenuation working mode; (c) if the circuit is not in the attenuation working mode, controlling the switcher to switch the adjusting circuit to the normal working mode; (d) judging whether the volume level number of the input audio signal is greater than a preset value Ld(ii) a (e) If it is larger than the preset value LdControlling the adjuster to output the attenuated audio signal to the switcher; (f) if not, the preset value L is setdControlling the adjuster to output a normal audio signal to the switcher; and (g) repeating steps (a) through (f) until the audio system is turned off.
The adjusting circuit provided by the invention can effectively reduce the volume of sudden high pitch, so that the interference of the adjusting circuit to a user is reduced to be extremely low in late night or quiet environment. Meanwhile, the controller provided by the invention controls the audio amplifier of the audio system, so that a user can conveniently and normally adjust the volume according to personal preference.
[ description of the drawings ]
FIG. 1 is a schematic diagram of a portion of a television with a volume adjustment apparatus according to the present invention.
Fig. 2 is a schematic diagram of the volume adjusting device according to the present invention.
Fig. 3 is a flow chart of the operation of the volume adjusting method of the present invention.
[ detailed description ] embodiments
Referring to fig. 1, a schematic diagram of a portion of a television with the volume adjustment apparatus 10 of the present invention is shown. The volume adjustment device 10 has a normal operation mode and an attenuation operation mode. The user can select the operation mode of the volume adjusting device 10 through the infrared remote controller 50 or function keys on the television panel. The volume adjustment device 10 includes a controller 101, an adjustment circuit 102 for performing volume adjustment, a communication port 103, and an audio processor 104. 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 is in communication with the mcu 1010 for storing data. The EEPROM 1014 communicates with the micro control unit 1010 for storing data. Through the communication port 103, the controller 101 controls the amplification of the audio signal by the audio amplifier 40 of the television. In another embodiment, the EEPROM 1014 can be replaced by Nonvolatile (Nonvolatile) Memory, such as ROM, EPROM, Flash Memory, etc.
The operation mode of the volume adjusting apparatus 10 determines the operation mode of the adjusting circuit 102. When the volume adjusting device 10 is in the normal operation mode, the adjusting circuit 102 is in the normal operation mode; when the volume adjusting device 10 is in the attenuation mode of operation, the adjusting circuit 102 is in the attenuation mode of operation. The adjusting circuit 102 includes an adjuster 1022 and a switch 1024 for switching the operating mode of the adjusting circuit 102. The audio signal received by the tv is transmitted to the adjuster 1022 and the switch 1024, respectively. The adjuster 1022 is connected to the switch 1024 and the audio processor 104, and the audio processor 104 controls the output of the audio signal of the adjuster 1022. The switch 1024 is connected to the mcu 1010, and the mcu 1010 controls the switching of the operation mode of the adjusting circuit 102 according to the operation mode of the volume adjusting apparatus 10. The switch 1024 transmits a normal audio signal or an audio signal output from the adjuster 1022 to the audio processor 104.
Referring to fig. 2, the horizontal axis "L" represents the number of volume levels of each audio signal input to the volume adjustment device 10, and the vertical axis "Y" represents the number of volume levels of each audio signal output by the volume adjustment device 10. When the user selects the volume adjustment device 10 to be in the normal operation mode, the mcu 1010 controls the switch 1024 to switch the adjustment circuit 102 to the normal operation mode. At this time, the audio signal is directly input to the switch 1024 and then output to the audio processor 104. Thus, after the user selects a favorite volume, the series relationship of the input and output volumes of various programs, advertisements and other sounds (including various noises) received by the television through the volume adjustment device 10 is shown by the dotted line in the figure (the dotted line in the small sound zone is covered by the solid line). That is, in the normal operation mode, the volume level number of the output audio signal of the volume adjustment device 10 is the same as the volume level number of the input audio signal, and the function is expressed as:
Y＝L(0＜＝L＜＝100％)。
when the user selects the volume adjustment device 10 to be in the attenuation mode, the mcu 1010 controls the switch 1024 to switch the adjustment circuit 102 to the attenuation mode. At this time, the audio signal is input to the adjuster 1022 of the volume adjusting apparatus 10. Wherein, the audio processor 104 obtains the volume level of the input audio signal from the adjuster 1022. In each input audio signal, the volume level number is less than LdThe input audio signal of value is a cell audio signal with volume level number greater than LdThe input audio signal of value is a loud-zone audio signal. When the volume level number L of the input audio signal is less than or equal to LdWhen the value is positive, the audio processor 104 returns to the tuner 1022 is output audio signals having a volume level of L. When the volume level number L of the input audio signal is larger than LdIn value, the audio processor 104 returns the output audio signal of the adjuster 1022 with a volume level of Yk. Wherein, YkAt LdAnd L is less than or equal to Ym，YmIs the maximum volume level number of the output audio signal. Thus, the series relationship of the input and output sound volume of various programs, advertisements and other sounds (including various noises) received by the television via the sound volume adjusting device 10 is shown by a solid line in the figure. The function is expressed as:
the adjuster 1022 outputs audio signals according to the aforementioned volume level returned from the audio processor 104. When the input audio signal is a loud-range audio signal, the output audio signal is an attenuated audio signal. The attenuated audio signal is outputted to the audio processor 104 via the switch 1024, and then amplified by the audio amplifier 40 of the tv for playing. In this way, the volume of the high sound zone of various programs, advertisements and other sounds (including various noises) played by the television is attenuated, so that the sudden high sound is prevented from interfering the user.
In this embodiment, L isdValue and YmThe values are preset by the television manufacturer. In another embodiment, the LdValue and YmThe value can be set by the user according to personal preference. When the sound volume adjusting apparatus 10 of the present invention is in the attenuation mode, the user can adjust the sound volume according to personal preference through the infrared remote controller 50 or the function keys on the tv panel at the same time. Which is implemented by the micro control unit 1010 controlling the amplification of the audio amplifier 40 of the television. The volume adjustment device 10 of the present invention can also be used in other audio systems, such as radio receivers, CD players, Walkman (Walkman), etc.
Fig. 3 is a flow chart showing the operation of the volume adjusting method according to the present invention. The user selects the operation mode of the volume adjusting apparatus 10 through the infrared remote controller 50 or function keys on the tv panel. In step S510, the mcu 1010 determines whether the volume adjusting apparatus 10 is in the attenuation mode. If so, the workflow proceeds to step S512, otherwise, the workflow proceeds to step S524. In step S524, the mcu 1010 controls the switch 1024 to switch the adjustmentThe circuit 102 goes to normal operating mode. In step S526, the switch 1024 transmits the normal audio signal to the audio processor 104. In step S512, the mcu 1010 controls the switch 1024 to switch the adjusting circuit 102 to the attenuation mode. In step S514, the audio processor 104 obtains the volume level number L of the input audio signal from the adjuster 1022. In step S516, the audio processor 104 determines whether the volume level number of the input audio signal of the adjuster 1022 is greater than LdThe value is obtained. If so, the workflow proceeds to step S518, otherwise, the workflow proceeds to step S530. In step S518, the audio processor 104 returns the volume level number Y of the output audio signal of the adjuster 1022k. Wherein, YkAt LdA value between L and less than or equal to Ym，YmIs the maximum volume level number of the output audio signal. In step S520, the number of steps Y is determined according to the volumekThe adjuster 1022 outputs the attenuated audio signal to the switch 1024. In step S522, the switch 1024 transmits the attenuated audio signal to the audio processor 104. In step S530, the audio processor 104 returns the volume level number L of the output audio signal of the adjuster 1022. In step S532, the adjuster 1022 outputs the normal audio signal to the switch 1024 according to the volume level L. In step S534, the switch 1024 transmits the normal audio signal to the audio processor 104.
The foregoing workflow will be repeated from time to time after the user turns on the television until it stops after the user turns off the television.
Claims (6)
1. A volume adjustment device for adjusting the volume of an audio signal output by an audio system, the volume adjustment device comprising:
a controller, the controller comprising:
a micro control unit;
a RAM in communication with the micro-control unit; and
a non-volatile memory in communication with the micro-control unit;
an audio processor connected to the audio amplifier of the audio system;
an adjusting circuit for performing volume adjustment, the adjusting circuit comprising:
an adjuster connected with the audio processor; and
a switch connected to the audio processor, the regulator and the micro-control unit;
and
a communication port;
wherein, the controller controls the amplification factor of the audio amplifier through the communication port;
the volume adjusting device has a normal working mode and an attenuation working mode, which are selected and determined by a user, and the micro control unit controls the switcher to switch the working mode of the adjusting circuit according to the working mode of the adjusting device; wherein,
in the normal working mode, the input audio signal directly reaches the audio processor through the switcher;
in the attenuation working mode, an input audio signal is input into an adjuster, an audio processor obtains the volume level number L of the input audio signal from the adjuster, when the volume level number L of the input audio signal is less than or equal to the value Ld, the volume level number of the output audio signal returned by the audio processor is L, when the volume level number L of the input audio signal is greater than the value Ld, the volume level number of the output audio signal returned by the audio processor is Yk, under the control of the audio processor, the adjuster outputs the adjusted audio signal, and the audio signal reaches the audio processor through the switcher, wherein Yk is between the value Ld and the value L and is less than or equal to Ym, and Ym is the maximum volume level number of the output audio signal.
2. The sound volume adjusting device as claimed in claim 1, wherein the non-volatile Memory is a ROM, EPROM, EEPROM or Flash Memory.
3. The volume adjustment device of claim 1, wherein the audio signal is output the same as input when in the normal operating mode.
4. The volume adjustment device of claim 1, wherein said L isdValue and YmThe value is preset.
5. The volume adjustment device of claim 1, wherein said L isdValue and YmThe value is set by the user according to personal preference.
6. A volume adjusting method for the volume adjusting apparatus of claim 1, for adjusting the volume of an audio signal output by an audio system, the volume adjusting method comprising the steps of:
(a) judging whether the volume adjusting device is in an attenuation working mode or not;
(b) if the circuit is in the attenuation working mode, controlling the switcher to switch the adjusting circuit to the attenuation working mode, and jumping to the step (d);
(c) if not, controlling the switcher to switch the adjusting circuit to the normal working mode, directly transmitting the input audio signal to the switcher, and jumping to the step (h);
(d) obtaining the volume level number L of an input audio signal;
(e) judging whether the volume level L of the input audio signal is larger than a preset value Ld；
(f) If it is larger than the preset value LdControlling the adjuster to output the attenuated audio signal to the switcher;
(g) if not, the preset value L is setdControlling the adjuster to output a normal audio signal, which is an input audio signal, to the switcher;
(h) outputting the audio signal to an audio processor by the switcher, and outputting the audio signal by the audio processor; and
(i) repeating steps (a) to (h) until the audio system is turned off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100153713A CN100438597C (en) | 2004-02-13 | 2004-02-13 | Sound volume adjusting apparatus and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100153713A CN100438597C (en) | 2004-02-13 | 2004-02-13 | Sound volume adjusting apparatus and method |
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| CN1655597A CN1655597A (en) | 2005-08-17 |
| CN100438597C true CN100438597C (en) | 2008-11-26 |
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| CNB2004100153713A Expired - Fee Related CN100438597C (en) | 2004-02-13 | 2004-02-13 | Sound volume adjusting apparatus and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635561B (en) * | 2009-08-19 | 2012-03-21 | 青岛海信电器股份有限公司 | Audio play device and volume control method |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1941619B (en) * | 2005-09-30 | 2010-05-26 | 鸿富锦精密工业（深圳）有限公司 | Volume management system and method |
| CN101060314B (en) * | 2006-04-19 | 2011-06-08 | 鸿富锦精密工业（深圳）有限公司 | Hearing protection method and sound output device |
| CN101226766B (en) * | 2007-01-19 | 2012-06-20 | 鸿富锦精密工业（深圳）有限公司 | Audio play device automatically adjusting play parameter |
| CN101771391B (en) * | 2008-12-31 | 2012-09-26 | 纬创资通股份有限公司 | Electronic device, volume control system and method thereof |
| CN104112460B (en) * | 2014-06-26 | 2017-02-15 | 小米科技有限责任公司 | Method and device for playing audio data |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5130665A (en) * | 1991-02-14 | 1992-07-14 | Walden Richard L | Audio volume level control |
| CN1169077A (en) * | 1996-06-11 | 1997-12-31 | 西门子商业通讯系统公司 | Apparatus and method for providing telephone user with control of threshold volume at which user's voice will take control of half-duplex speakerphone conversation |
| JPH1117473A (en) * | 1997-06-20 | 1999-01-22 | Fujitsu General Ltd | Sound volume adjustment device |
| JPH11355684A (en) * | 1998-06-12 | 1999-12-24 | Nec Corp | Volume adjusting device and its adjusting method |
| JP2000068766A (en) * | 1998-08-18 | 2000-03-03 | Asahi Kasei Microsystems Kk | Volume circuit |
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2004
- 2004-02-13 CN CNB2004100153713A patent/CN100438597C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5130665A (en) * | 1991-02-14 | 1992-07-14 | Walden Richard L | Audio volume level control |
| CN1169077A (en) * | 1996-06-11 | 1997-12-31 | 西门子商业通讯系统公司 | Apparatus and method for providing telephone user with control of threshold volume at which user's voice will take control of half-duplex speakerphone conversation |
| JPH1117473A (en) * | 1997-06-20 | 1999-01-22 | Fujitsu General Ltd | Sound volume adjustment device |
| JPH11355684A (en) * | 1998-06-12 | 1999-12-24 | Nec Corp | Volume adjusting device and its adjusting method |
| JP2000068766A (en) * | 1998-08-18 | 2000-03-03 | Asahi Kasei Microsystems Kk | Volume circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635561B (en) * | 2009-08-19 | 2012-03-21 | 青岛海信电器股份有限公司 | Audio play device and volume control method |
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