JP2010054867A - Recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording device capable of effectively removing sound recorded by a recording section, which is generated by operating an operation section. <P>SOLUTION: In recording processing time in the recording section 6, a control section 7 determines whether or not, any operation by the operation section 3 is detected. When the operation is detected, timing when the operation is detected is stored in a storage section 4 by relating it to a recording data recorded by the recording section 6, with the timing when the operation is detected as detection timing information. When recording data are reproduced, the control section 7 performs key click removing process, based on the detection timing of the operation related to the recording data. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a recording device having an operation unit and a recording unit for recording sound.

For example, there is a mobile terminal with a camera that can shoot a moving image.
In such a portable terminal, zooming in / out, white balance adjustment, and the like can be performed while shooting a moving image.
These operations are performed via an operation unit such as a key / button provided in the portable terminal.

Many portable terminals as described above can record surrounding sounds as well as moving images.
In such a portable terminal, when various operations such as zooming in / out are performed while recording a sound while recording a video, a click sound due to the operation is recorded along with surrounding sounds through the casing of the portable terminal. There is.

The operation unit of the mobile terminal generally has a click feeling in order to make the user sense that it has been operated. That is, each time the operation unit is operated, a key click sound (for example, a sound such as “spot”) is generated.
This key click sound is recorded by the microphone that is recording the surrounding sound.

In this way, when you listen to the recording you made while operating, the key click sound of “pot, pot” is played with the surrounding sound, making it difficult to hear the surrounding sound. Has occurred.
Such a situation occurs not only in portable terminals that can record moving images, but also in general recording devices that have an operation unit and can perform recording.
As a technique for solving such a situation, there is a technique disclosed in Patent Document 1, for example.

JP 2006-39105 A

Patent Document 1 discloses a voice recording device that performs a filtering process on a recorded voice when an operation is detected during recording.
However, in the technique disclosed in Patent Document 1, since the filter processing is performed on the recording at that time after the operation is electrically sensed, the click sound generated by the operation is recorded or the click sound is recorded. The filtering process is performed only on the latter half of. That is, since the filter process cannot be performed simultaneously with the generation of the click sound, there is a disadvantage that the click sound cannot be completely removed.

  An object of this invention is to provide the recording device which can remove more effectively the sound produced by operation to the operation part recorded by the recording part.

  The recording device of the first invention includes a recording unit for recording voice, an operation detection unit for detecting an operation, a storage unit for storing voice recorded in the recording unit, and the voice stored in the storage unit. A control unit that performs predetermined control on the control unit, and the control unit detects the operation when an operation is detected by the operation detection unit when sound is recorded by the recording unit. Predetermined editing is performed on the sound recorded by the recording unit a predetermined time before the operation is detected by the recording unit.

  Preferably, the control unit, when an operation is detected by the operation detection unit when sound is recorded by the recording unit, a predetermined time before the operation is detected by the operation detection unit. The editing is performed by replacing the voice recorded by the recording unit with the voice recorded by the recording unit before or after the time point before the predetermined time.

  Preferably, the storage unit stores in advance sound reduction data for reducing sound generated by the operation when the operation detection unit is operated and recorded by the recording unit. The control unit, when an operation is detected by the operation detection unit when sound is being recorded by the recording unit, the recording unit a predetermined time before the operation is detected by the operation detection unit. The editing is performed by synthesizing the reduced data with the voice recorded in (1).

  Preferably, the predetermined time is a time from when an operation to the operation detection unit is performed to when the operation is detected by the operation detection unit.

  Preferably, a plurality of the operation detection units are provided, the storage unit stores the different reduction data corresponding to each operation detection unit included in the plurality of operation detection units, and the control unit When an operation is detected by one operation detection unit included in the plurality of operation detection units while the sound is recorded by the recording unit, a predetermined time before the operation is detected by the operation detection unit. The editing is performed by synthesizing the reduced data corresponding to the one operation detecting unit with the voice recorded in the recording unit.

  Preferably, a plurality of the operation detection units are provided, the storage unit stores the predetermined times different for each of the various detection units included in the plurality of operation detection units, and the control unit is configured to record the recording unit. When an operation is detected by one operation detection unit included in the plurality of operation detection units when sound is recorded by the first operation detection unit, the operation is detected after the one operation detection unit detects the operation. Predetermined editing is performed on the sound recorded by the recording unit before the predetermined time corresponding to the detection unit.

  It is possible to more effectively remove the sound generated by the operation of the operation unit recorded by the recording unit.

Hereinafter, the portable terminal 100 of the embodiment of the recording device of the present invention will be described.
The mobile terminal 100 of the following embodiment assumes a mobile phone.
FIG. 1 is a block diagram illustrating an example of a configuration of the mobile terminal 100 according to the embodiment.

  As illustrated in FIG. 1, the mobile terminal 100 includes a communication unit 1, a display unit 2, an operation unit (operation detection unit) 3, a storage unit 4, an imaging unit 5, a recording unit 6, and a control unit 7.

The communication unit 1 performs processing related to wireless communication with a base station (not shown in FIG. 1). For example, transmission data supplied from the control unit 7 to be described later is subjected to predetermined modulation processing to be converted into a radio signal and transmitted. Alternatively, the radio signal received from the base station is subjected to predetermined demodulation processing to be converted into reception data, and output to the control unit 7.
The data transmitted / received by the communication unit 1 is, for example, voice data at the time of a voice call of the mobile terminal 100, mail data at the time of mail transmission / reception, image data to be attached to these.

The display unit 2 is a display device composed of, for example, a liquid crystal display panel or an organic EL (Electro-Luminescence) panel. The display unit 2 displays an image corresponding to the image data supplied from the control unit 7.
For example, the destination telephone number at the time of outgoing call, the telephone number of the other party at the time of incoming call, the contents of the received mail and the outgoing mail, the image of the photographing result captured by the imaging unit 5 described later, and the browser for browsing the Internet web page Displays the screen, standby screen, date, time, battery level, etc.

The operation unit 3 includes, for example, numeric keys (one of operation detection units), character keys (one of operation detection units), arrow keys (one of operation detection units), decision keys (one of operation detection units), and the like. The input device includes a plurality of keys and buttons (a plurality of operation detection units) having various functions.
When these keys / buttons are operated by the user, the operation unit 3 detects the operation and outputs an electric signal corresponding to the detected operation to the control unit 7.
The operation unit 3 according to the present embodiment is configured such that a click feeling is generated with respect to an operation in order to give an operation feeling to a user who performs an operation such as pressing on these keys and buttons. For this reason, a key click sound is generated each time the operation unit 3 is operated. Although this key click sound is not a loud sound, for example, when the operation unit 3 is operated during sound recording by the recording unit 6 described later, the key click sound is recorded together with surrounding sounds.
In addition, the operation unit 3 according to the present embodiment detects an operation using, for example, a metal dome. When the operation of the operation unit 3 is detected, there is a slight time lag from when the operation unit 3 starts to be actually operated until the operation is detected by electrically connecting a contact point such as a metal dome. Since this time lag is determined according to the position, size, range, shape, material, and the like of the operation unit 3, a plurality of keys and buttons constituting the operation unit 3 have different values.

The storage unit 4 is a storage device such as a ROM (Read Only Memory) or a RAM (Random Access Memory). The storage unit 4 is data related to various processes of the mobile terminal 100, image data captured by the imaging unit 5, recording data recorded by the recording unit 6, or a program for the control unit 7 to execute various functions of the mobile terminal 100. Is remembered.
In addition, the storage unit 4 stores information about a time lag corresponding to each of the plurality of key buttons constituting the operation unit 3 and reduction data for reducing key click sound corresponding to each of the plurality of key buttons. I remember it. Details regarding the reduction data will be described later.

The imaging unit 5 is a camera device that uses a solid-state imaging device such as a complementary metal-oxide semiconductor (CMOS) or a charge coupled device (CCD).
The imaging unit 5 can capture still images, moving images, and the like according to user operations. In addition, it is possible to change settings relating to shooting by operating the operation unit 3 even during shooting.

The recording unit 6 records external sound input via a microphone (not shown). The recorded data can be stored in the storage unit 4.
The recording unit 6 can record alone, or in conjunction with the imaging unit 5, can record a sound part of a so-called movie (synchronized sound with a moving image).

The control unit 7 is a control block that performs overall control of each configuration described above and executes each operation / process of the mobile terminal 100. The control part 7 is comprised by CPU (Central Processing Unit), for example.
The processing of the mobile terminal 100 executed by the control unit 7 includes, for example, voice call processing, mail transmission / reception processing, Web browsing processing, imaging processing by the imaging unit 5, recording processing by the recording unit 6, and the like.

Hereinafter, the control when the operation unit 3 is operated during the recording process of the recording unit 6 by the control unit 7 will be described.
FIG. 2 is a diagram showing an example of a time chart when an operation on the operation unit 3 occurs during the recording process of the recording unit 6 by the control unit 7.
FIG. 2A is a time chart showing an operation on one key / button included in a plurality of keys / buttons constituting the operation unit 3. In FIG. 2A, the point in time when switching from off to on (one of the operation timings) indicates the start time of operation on one key / button, and the point in time when switching from on to off (one of the operation timings). Indicates the end of the operation on one key / button.

FIG. 2B is a time chart showing the timing of a key click sound generated in response to an operation on one key / button shown in FIG.
FIG. 2 (b) shows that a key click sound is recorded at a part marked with a cross.
When an operation is performed on the operation unit 3 during voice recording by the recording unit 6, a key click sound is generated at the start of the operation and at the end of the operation. Therefore, as shown in FIG. 2B, the timing of the operation ON or OFF shown in FIG. 2A and the timing at which the key click sound is generated are almost simultaneous.

FIG. 2C is a time chart showing detection timing at which the operation unit 3 detects an operation to one key / button shown in FIG.
As shown in FIG. 2C, when the operation of the operation unit 3 is detected, the operation is not performed until the operation is detected after a contact point such as a metal dome is electrically connected after the operation is actually started. There is a slight time lag between the end of the operation and the end of the detection of the operation after the electrical connection at the contact point such as the metal dome is released. Assume that this time lag corresponding to one key / button is t1 seconds.

Referring to FIGS. 2B and 2C, when an operation on one key / button is started or ended during the sound recording of the recording unit 6, the sound is actually recorded in the recording data. It can be seen that there is a difference of t1 seconds between the timing of the key click sound and the timing of the operation detected by one key button.
In the portable terminal 100 of the present embodiment, for the purpose of performing a predetermined process on the key click sound at the time of reproducing recorded data to be described later, under the control of the control unit 7, The detection timing of the operation detected by one key / button as shown in 2 (c) is stored in the storage unit 4.

Next, processing when the recorded data recorded by the recording unit 6 is reproduced will be described.
FIG. 3 is a time chart showing the generation timing of a key click sound at the time of recording data reproduction and the timing of a predetermined process for this.
When the recording data recorded by the recording unit 6 is reproduced, the control unit 7 first determines whether or not a key click sound is included in the recording data based on the detection timing of the operation during the recording process stored in the storage unit 4. Determine whether or not.
When it is determined that a key click sound is present, the control unit 7 refers to the detection timing of the operation at the time of the recording process stored in the storage unit 4 and a plurality of keys / The type of the key / button actually operated from the button is specified.

FIG. 3A is a time chart showing the detection timing of the operation during the recording process.
The time chart shown in FIG. 3A is a time chart similar to the time chart shown in FIG.
FIG. 3B is a time chart showing the timing of the key click sound on the recorded data (portion marked with x).
The time chart shown in FIG. 3B is the same time chart as the time chart shown in FIG.

As shown in FIGS. 3A and 3B, the generation timing of the key click sound on the recording data is present earlier than the operation detection timing.
That is, the control unit 7 can grasp the position of the key click sound on the recorded data without referring to the recorded data itself by grasping the detection timing of the operation shown in FIG. .
For example, when the type of the key / button specified by the control unit 7 is the one key / button described above, the key click sound on the recording data is present at a position t1 second earlier than the operation detection timing. It can be estimated by the control unit 7.
Therefore, the control unit 7 performs the recording data reproduction process on the recording data at a position earlier by t1 seconds than the operation detection timing based on the operation detection timing at the time of the recording process stored in the storage unit 4. By performing the predetermined processing, the key click sound on the recording data can be almost completely removed.

FIG. 3C is a time chart showing the timing of the key click sound removal process when the recorded data is reproduced by the control unit 7.
In FIG.3 (c), the control part 7 performs a predetermined | prescribed process (key click sound removal process) with respect to the recording data of the time slot which attached the oblique line. The time width of the key click sound removal processing performed by the control unit 7 (that is, the time width of the hatched portion in FIG. 3C) is not particularly limited in the present invention. For example, the time width in which the key click sound is generated when the key of the operation unit 3 is pressed empirically may be measured in advance and set to a time width sufficiently longer than this time width.

Next, the key click sound removal process performed by the control unit 7 will be described.
In the storage unit 4, reduction data for reducing the key click sound corresponding to each of the plurality of key buttons constituting the operation unit 3 (for example, having the same amplitude as that of the key click sound, and half Data whose phase is shifted by the period) is stored in advance, and the control unit 7 combines the reduced data with the recording data having a predetermined time width before and after the timing at which the key click sound removal processing is to be performed. Click sound removal processing is performed.
Since the reduction data differs depending on the type of the actually operated key / button specified by the control unit 7, the storage unit 4 stores reduction data corresponding to each type in advance. In the key click sound removal process, the control unit 7 reads the corresponding reduction data from the storage unit 4 based on the identified key / button type, and performs the key click sound removal process using this data.
Note that the reduction data corresponding to each type may be generated in advance based on key click sounds actually generated by these types of keys and buttons, for example, at the time of setting or manufacturing the mobile terminal 100.

  In addition, the key click sound removal process itself of this invention is not limited to the method mentioned above. For example, the control unit 7 extracts recording data having a predetermined time width before and after the timing at which the key click sound removal processing is to be performed, averages the extracted recording data, and detects the averaged operation. By inserting the timing, the key click sound included in the recording data may be removed. For example, the predetermined time width may be the same time width as the time width to be subjected to the key click sound removal processing shown in FIG.

Hereinafter, an operation example during recording and reproduction in the mobile terminal 100 of the present embodiment will be described.
FIG. 4 is a flowchart illustrating an operation example of the portable terminal 100 during recording.
Step ST1:
The control unit 7 causes the recording unit 6 to start recording processing in accordance with, for example, an operation detected by the operation unit 3.
Step ST2:
The control unit 7 monitors whether or not an operation is detected by the operation unit 3 while the recording unit 6 performs the recording process.
If an operation has been detected, the process proceeds to step ST3. If not, the process ends.

Step ST3:
The control unit 7 causes the storage unit 4 to store information related to the operation detection timing sensed by the monitoring in step ST <b> 2 (hereinafter referred to as operation detection timing information) in association with the recording data recorded by the recording unit 6.
At the time of the recording process by the recording unit 6, as shown in FIG. 4, the presence or absence of an operation detected by the operation unit 3 is monitored, and if an operation is detected, the operation detection timing is stored, thereby recording data to be described later. The key click sound removal process can be performed during the reproduction process.

FIG. 5 is a flowchart showing an operation example of the recording data re-instruction of the mobile terminal 100.
Step ST11:
The control unit 7 reads the recorded data from the storage unit 4 and starts reproduction.
Step ST12:
The control unit 7 refers to the storage unit 4 and determines whether there is operation detection timing information associated with the recording data.
If there is operation detection timing information associated with the recorded data, the process proceeds to step ST13, and if not, the process proceeds to step ST14.

Step ST13:
Based on the operation detection timing and the specified key / button type, the control unit 7 grasps the timing at which the key click sound is generated on the recording data, and the recording data of a predetermined time width of the timing. Then, a key click sound removal process corresponding to the specified key / button is performed.
Step ST14:
The control unit 7 performs normal recording data reproduction processing.

As described above, according to the portable terminal 100 of the present embodiment, during the recording process of the recording unit 6, the control unit 7 determines whether any operation has been detected by the operation unit 3 and detects the operation. When the operation is performed, the timing at which the operation is detected is stored as the operation detection timing information in the storage unit 4 in association with the recording data recorded by the recording unit 6.
When the recorded data is reproduced, the control unit 7 performs the key click sound removal process based on the detection timing of the operation associated with the recorded data, so that the key click sound is almost completely removed when the recorded data is reproduced. Can do.

  Further, according to the mobile terminal 100 of the present embodiment, the timing at which the operation unit 3 detects the operation is delayed from the timing at which the key of the operation unit 3 is actually pressed. Since it is determined that the timing that goes back from the detection timing of the operation associated with the recording data based on the time is the timing at which the key click sound exists, the key click sound can be more accurately removed.

  Further, according to the portable terminal 100 of the present embodiment, the reduction data for reducing the key click sound corresponding to each of the plurality of keys / buttons of the operation unit 3 is stored in the storage unit 4. For this reason, the key click sound can be removed from any key / button of the operation unit 3 of the mobile terminal 100.

  Further, according to the portable terminal 100 of the present embodiment, information related to the time lag from operation to detection corresponding to each of the plurality of keys / buttons of the operation unit 3 is stored in the storage unit 4 to reproduce recorded data. Sometimes, when performing the key click sound removal process, the key click sound removal process is performed in consideration of the time lag corresponding to the operated one key button. Also, the key click sound can be accurately removed.

The present invention is not limited to the embodiment described above.
That is, when implementing the present invention, various modifications and alternatives may be made to the components of the above-described embodiments within the technical scope of the present invention or an equivalent scope thereof.
For example, in the present embodiment, the key click sound removal processing is configured to be performed at the time of reproduction of recorded data. However, the present invention is not limited to this, and may be configured to be performed in other situations. Good. In an extreme case, the key click sound removal process may be performed at any time from when the recording data is stored in the storage unit 4 until the recording data is reproduced.
In the embodiment described above, the mobile terminal 100 is assumed to be a mobile phone or a PHS, but the present invention is not limited to this. For example, another portable terminal having a recording unit and an operation unit such as a PDA (Personal Digital Assistant) may be used.

FIG. 1 is a block diagram illustrating an example of a configuration of a mobile terminal. FIG. 2 is a diagram illustrating an example of a time chart when an operation on the operation unit occurs during the recording process of the recording unit by the control unit. FIG. 3 is a time chart showing the generation timing of a key click sound at the time of recording data reproduction and the timing of a predetermined process for this. FIG. 4 is a flowchart showing an operation example during recording of the mobile terminal. FIG. 5 is a flowchart showing an operation example of the recording data re-instruction of the portable terminal.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Portable terminal, 1 ... Communication part, 2 ... Display part, 3 ... Operation part, 4 ... Memory | storage part, 5 ... Imaging part, 6 ... Recording part, 7 ... Control part

Claims (6)

A recording unit for recording audio;
An operation detection unit for detecting an operation;
A storage unit for storing the voice recorded in the recording unit;
A control unit that performs predetermined control on the voice stored in the storage unit;
Have
If the operation is detected by the operation detection unit while the sound is being recorded by the recording unit, the control unit may detect the operation by the recording unit a predetermined time before the operation is detected by the operation detection unit. A recording device that performs predetermined editing on recorded sound. The control unit, when an operation is detected by the operation detection unit when sound is being recorded by the recording unit, before a time point a predetermined time before the operation is detected by the operation detection unit or The recording device according to claim 1, wherein the editing is performed by replacing a sound recorded later by the recording unit with a sound recorded by the recording unit before the predetermined time. The storage unit stores in advance sound reduction data for reducing sound that is generated by the operation when the operation detection unit is operated and recorded by the recording unit,
When an operation is detected by the operation detection unit while a sound is being recorded by the recording unit, the control unit receives the operation from the operation detection unit to the recording unit a predetermined time before the operation is detected. The recording apparatus according to claim 1, wherein the editing is performed by synthesizing the reduced data with a recorded voice. The recording according to any one of claims 1 to 3, wherein the predetermined time is a time from when an operation to the operation detection unit is performed to when the operation is detected by the operation detection unit. machine. A plurality of the operation detection units;
The storage unit stores the reduced data different from each other corresponding to each operation detection unit included in the plurality of operation detection units,
The control unit detects an operation by the operation detection unit when an operation is detected by one operation detection unit included in the plurality of operation detection units while the sound is recorded by the recording unit. 5. The editing is performed by synthesizing the reduced data corresponding to the one operation detection unit with the voice recorded in the recording unit a predetermined time before the recording. 5. The recording device according to one item. A plurality of the operation detection units;
The storage unit stores the different predetermined times for various detection units included in the plurality of operation detection units,
In the case where an operation is detected by one operation detection unit included in the plurality of operation detection units when sound is recorded by the recording unit, the control unit is operated by the one operation detection unit. The predetermined editing is performed on the sound recorded by the recording unit before the predetermined time corresponding to the one operation detection unit after being detected. 5. Recording equipment as described.

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