JP2007280461A - Reproducing device, user interface control method, and program - Google Patents

Reproducing device, user interface control method, and program Download PDF

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Publication number
JP2007280461A
JP2007280461A JP2006103142A JP2006103142A JP2007280461A JP 2007280461 A JP2007280461 A JP 2007280461A JP 2006103142 A JP2006103142 A JP 2006103142A JP 2006103142 A JP2006103142 A JP 2006103142A JP 2007280461 A JP2007280461 A JP 2007280461A
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Japan
Prior art keywords
operation
inclination angle
content
means
predetermined
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JP2006103142A
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Japanese (ja)
Inventor
Makoto Inoue
Hiroshi Ito
Kenichi Makino
Akane Sano
Katsuya Shirai
Motoyuki Takai
Hirobumi Tamori
真 井上
博史 伊藤
あかね 佐野
堅一 牧野
寛文 田守
克弥 白井
基行 高井
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Sony Corp
ソニー株式会社
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Application filed by Sony Corp, ソニー株式会社 filed Critical Sony Corp
Priority to JP2006103142A priority Critical patent/JP2007280461A/en
Publication of JP2007280461A publication Critical patent/JP2007280461A/en
Application status is Pending legal-status Critical

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Abstract

<P>PROBLEM TO BE SOLVED: To effectively utilize an acceleration sensor for an operation of a content reproducing device. <P>SOLUTION: A tilt angle of an axis set to a body of the content reproducing device is detected to allow scroll of an album list for retrieval of content and cursor movement on the content list and scroll according to the detection result. Accordingly, the operation for content retrieval is allowed according to a prescribed tilt posture imparted to the body of the content reproducing device without performing a physical key operation and so forth. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a playback device that plays back information as content such as audio and video, a control method for a user interface implemented by such a playback device, and a program executed by the playback device.

  Various operation input devices using information such as an inclination angle and a rotation angle detected by an acceleration sensor have been proposed and are being used. For example, in Patent Document 1 below, as a coordinate input device (pointing device) that substitutes for an operation input device such as a mouse, in order to convert the rotational position state of the main body of the device into coordinate information, two X-axis and Y-axis are used. A configuration with an axial angular velocity sensor is described.

JP-A-5-257595

  The present invention also intends to use a means for detecting an inclination angle, such as an angular velocity sensor, for operation input, and is particularly useful when applied to portable content playback apparatuses that have become widespread in recent years. Such a technical configuration is proposed.

In view of the above-described problems, the present invention is configured as follows as a playback apparatus for playing back information as content.
An inclination angle detecting means for detecting an inclination angle with respect to a predetermined axial direction set in the main body and a predetermined operation target related to content reproduction are given a predetermined change according to the inclination angle detected by the inclination angle detecting means. Operation target control means.

  In the playback apparatus having the above configuration, a predetermined change is given to the operation target related to content playback in accordance with the detection result of the tilt angle in the predetermined axial direction set in the main body. This means that an operation related to content reproduction can be performed by an operation method of changing the posture state by, for example, tilting the main body of the reproduction apparatus.

As described above, the present invention can change the posture state of the main body of the playback device without performing any operation that gives a physical movement of the operator, such as pressing a key or sliding the key. Operations related to content reproduction can be performed by the act of changing.
Such an effect is particularly effective with respect to a small-sized reproducing apparatus that is portable. That is, in such a small playback device, the number of operation elements is limited or the operation elements tend to be complicated due to the small number of operation elements. However, depending on the present invention, such inconvenience is effective. It is because it is canceled.

FIG. 1 shows an example of the appearance of a portable content player 1 as the best mode for carrying out the present invention (hereinafter referred to as an embodiment).
The main body 1A of the portable content player 1 shown in this figure has a size that can be carried by a user with one hand, for example. In this case, the main body 1A has a shape that is a substantially rectangular parallelepiped. As shown in the figure, the upper surface portion 1a, the front surface portion 1b, the left side surface portion 1c, the back surface portion 1d, the right side surface portion 1e, and the lower surface portion 1f are provided. The appearance of the portable content player 1 according to the present embodiment shown in FIG. 1, including the shape of the main body 1A, is merely an example.

In this case, a display screen portion 20A is arranged on the upper surface portion 1a of the main body portion 1A. On the display screen portion 20A, required contents are displayed according to the operating state of the portable content player 1. For example, when a content is being played back, necessary information such as a title name and playback progress time for the content being played back is displayed using characters, designs, and the like.
In this case, in the display screen portion 20A, the front surface portion 1b side of the main body portion 1A is the upper screen side, and the rear surface portion 1d side is the lower screen side. That is, the user can view a display image in a normal orientation that is not upside down by observing the display screen portion 20A with the front surface portion 1b of the main body portion 1A facing upward.

  In this case, the portable content player 1 has a jog dial 18a attached to the left side surface portion 1c and an upper surface portion 1a as an operation element that is operated by a user physically giving a movement such as pressing and rotation. Key buttons 18b and 18c to be displayed are shown. The jog dial 18a can be operated, for example, by rotating it in both the forward and reverse directions within a certain angle range as shown by an arrow A in the figure. Further, it is possible to perform an operation of pushing in the main body 1A along the direction as an arrow B, or pulling in the opposite direction. The key buttons 18a and 18c can perform general pressing and releasing operations. The portable content player 1 according to the present embodiment can perform almost all operations that can be performed for content reproduction in the portable content player 1 using these operators. In this way, a specific operation can be performed by an action of holding the portable content player 1 in his hand and changing its posture state without performing operations on these operators.

Further, in the portable content player 1 of the present embodiment, a touch sensor corresponding unit 17A is provided. The touch sensor corresponding portion 17A is, for example, a portion of the back surface portion 1d of the main body portion 1A shown by hatching in the figure, and when a finger (part of the human body) is brought into contact with this portion, a built-in touch This is detected by a sensor. The operation for the touch sensor corresponding portion 17A is used in combination when an operation for changing the posture state of the main body portion 1A is performed as described later.
Depending on the detection method of the touch sensor such as the capacitance method, there is a case where it is not necessary to expose the sensor unit to the portion corresponding to the touch sensor corresponding portion 17A. In such a case, the user can recognize that it is the touch sensor corresponding part 17A by, for example, performing uneven processing on the part of the casing as the main body part 1A that becomes the touch sensor corresponding part 17A. It is preferable to form a simple state.

  In this case, the headphone terminal 16 is provided for a portion that is the inner periphery of the jog dial 18a. The sound of the content data reproduced by the portable content player 1 is output from the headphone terminal 16.

FIG. 2 is a block diagram illustrating a configuration example of the portable content player 1 according to the present embodiment.
In this figure, the control unit 11 includes a microcomputer including, for example, a CPU (Central Processing Unit), ROM, RAM, and the like, and executes various controls in the portable content player 1.

  The non-volatile memory unit 12 includes, for example, a flash memory or the like, and includes a semiconductor memory element configured so that stored data is not lost even when the supply of main power is stopped. It is said. In this figure, a program executed by the CPU of the control unit 11 is shown as data stored in the nonvolatile memory unit 12, but other types of data may be stored and held. For example, it is conceivable to store setting data, management information, and the like used by the control unit 11 for various controls.

The content storage unit 13 is a part for storing content data that can be reproduced and output by the portable content player 1 so as to be managed in units of files, for example.
Under the present invention, the type and file format of content data stored in the content storage unit 13 should not be particularly limited. However, here, for the sake of simplicity, it is assumed that the content data stored in the content storage unit 13 as a reproduction target is audio data compressed in a predetermined compression encoding format.

In addition, as a storage medium or storage device actually used as the content storage unit 13, for example, in the present situation, a nonvolatile semiconductor storage element such as an HDD (hard disk drive) or a flash memory is widely used. However, the present invention is not particularly limited, and various storage media known so far or developed / provided in the future may be employed. Further, the portable content player 1 according to the present embodiment may have a configuration in which the storage medium as described above is built in the main body. The storage medium may be a removable format and the portable content player 1 A configuration in which a corresponding drive is provided on the main body side may also be used.
In FIG. 2, the content storage unit 13 and the nonvolatile memory unit 12 are shown as separate functional blocks, but the content storage unit 13 and the nonvolatile memory unit 12 are physically common. The storage medium may be used.

Further, in the portable content player 1 of the present embodiment, the external data interface 23 is used to acquire content data to be stored in the content storage unit 13.
That is, the portable content player 1 and a device such as a personal computer serving as the host are connected via the external data interface 23 so that the content data is transferred from the host to the portable content player 1. The portable content player 1 receives and acquires the transferred content data, for example, under the control of the control unit 11, and stores the acquired content data in a storage medium as the content storage unit 13. .

  In this case, the external data interface 23 is configured to include hardware and software for communicating with an external device via cable connection or wirelessly according to a predetermined data communication standard. The communication standard supported by the external interface 23 should not be particularly limited. However, in the present situation, for example, IEEE1394, USB, Ethernet, Bluetooth, IEEE802.11a / b / g, etc. may be adopted. .

  The reproduction processing unit 14 inputs content data read from the content storage unit 13 under the control of the control unit 11 and executes a required reproduction signal process. Here, the content data is assumed to be in a file format of audio data that has been compression-encoded by a predetermined method, so the reproduction processing unit 14 executes a demodulation process corresponding to this compression-encoding method, etc. The output is made to the audio output processing unit 15. The audio output processing unit 15 performs necessary audio signal processing to be executed after the decoding process, such as sound quality adjustment, volume adjustment, and amplification, for example, on the input audio signal, and then performs audio for driving headphones. A signal is output to the headphone terminal 16.

  The display unit 20 is configured as a display device having the display screen unit 20A shown in FIG. 1, and performs various displays on the display screen unit 20A. When displaying an image on the display unit 20, the control unit 11 holds display data in the display memory 19 and also performs display drive operation using the display data held in the display memory 19 by the display unit 20. Is controlled to be executed.

  For example, in correspondence with FIG. 1, the operation unit 18 includes an operation element provided in the main body 1 </ b> A such as the jog dial 18 a and the key buttons 18 b and 18 c, and an operation instruction signal according to an operation performed on these operation elements. And the parts to be output to the control unit 11 are collectively shown. The control unit 11 performs a required process according to the operation instruction signal output from the operation unit 18.

The touch sensor 17 is provided such that the sensor unit is disposed at a position corresponding to the touch sensor corresponding portion 17A described with reference to FIG. Thus, as described above, the touch sensor 17 detects the presence or absence of contact according to the state in which a finger or the like is in contact with the touch sensor corresponding portion 17A. Will be.
It should be noted that the actual hardware device as a touch sensor is a sensor device that employs a known detection method such as a resistive film method or a capacitance method, or a sensor device that will be developed in the future. May be used.

Further, the portable content player 1 of the present embodiment is provided with an acceleration sensor 21. The acceleration sensor 21 is configured to be able to detect, for example, acceleration on at least two axes of an X axis and a Y axis orthogonal to the X axis. In the case of the present embodiment, as shown in FIG. 1, the X axis is set as an axis along the horizontal central axis of the upper surface portion 1a of the main body 1A of the portable content player 1, and the Y axis is It is set as an axis along the central axis in the vertical direction of the upper surface portion 1a in the same main body portion 1A.
A signal obtained by detecting acceleration by the acceleration sensor 21 is converted into digital data that can be processed by the control unit (CPU 11) by the sensor signal processing circuit 22, and is input to the control unit 11.
In the case of the present embodiment, the control unit 11 is configured to obtain information on the tilt angle with respect to a predetermined reference plane with respect to the X axis and the Y axis, based on the input sensor signal, in order to realize an operation described later. . Therefore, the acceleration sensor 21 should be configured so as to be able to perform a detection operation in response to static acceleration such as the earth's gravity.

  In the portable content player 1 of the present embodiment configured as described above, in addition to the normal operation using the operation element as the operation unit 18, the portable content player 1 is portable without performing any operation on these operation elements. A predetermined operation can be performed by the action of setting the posture of the main body of the type content player 1 to a predetermined state. Hereinafter, this point will be described. Such an operation method is also referred to as a “main body posture control operation” here.

FIG. 3 shows an example of how the user holds the portable content player 1 when performing a body posture control operation.
As shown in this figure, when the body posture control operation is performed, it is held in the hand so that the top surface portion 1a on which the display screen portion 20A is disposed is the top and the front side is the back surface portion 1d. To be done. By holding the portable content player 1 in such an orientation, the user can view the image displayed on the display screen unit 20A in the correct orientation.
In addition, when performing the body posture control operation, the user's finger is brought into contact with the touch sensor corresponding portion 17A on the back surface portion 1d. In this case, since the thumb just comes to the back surface portion 1d, the touch sensor corresponding portion 17A may be held by the thumb as shown in the figure.

  As will be understood from the following description, in the main body posture control operation of the present embodiment, the event to be operated is changed by tilting the main body of the portable content player 1 in a predetermined posture state. To be given. However, if this is the case, depending on the specifications of the operation, the operation is effective even in situations where it is not necessary to perform the operation by inadvertently tilting the main unit. It is considered that there is a possibility that a malfunction will occur. Therefore, in the present embodiment, it is a necessary condition that the user's finger is brought into contact with the touch sensor corresponding portion 17A during the body posture control operation. As a result, in the state where the user's finger is not in contact with the touch sensor corresponding portion 17A, even if the main body is tilted, the main body posture control operation is invalidated to prevent the above-described malfunction. It is something that considers.

In addition, as a means for such an auxiliary operation for setting the validity / invalidity of the main body posture control operation, a pressing operation on a normal key button or the like may be continued. is there.
However, in the case of such an operation on the key button, it is necessary that the user keeps pressing the key button while the main body posture control operation is performed, which is rather unstable. It is thought that it becomes easy to operate. In the present embodiment, since the user only has to attach a finger or the like to the part serving as the touch sensor corresponding portion 17A, a reliable operation can be expected.

  Subsequently, a specific example of the main body posture control operation as the present embodiment will be described. As a specific example, the main body attitude control operation is applied to an operation for retrieving content data.

At present, the following is known as a general management mode for content that is audio data.
That is, an audio data file as content is handled as corresponding to one piece of music, and if this file includes a title (indicating the name of the song), an artist (indicating the name of the performer), and an album (including the content) Information (metadata) indicating attributes such as the playback order in the album and the genre. The content data is managed based on these attributes.
Based on such a form of content management, as a content search, first, a list of albums is presented and an album selection decision is made, and a list of contents (music pieces) that are supposed to be in that album is presented. It is conceivable to adopt a method of searching for the target content from the presented contents. The main body posture control operation of the present embodiment corresponds to the case where such a method is adopted.

  In order to perform a content search by a main body attitude control operation on the portable content player 1 of the present embodiment, first, a content search mode is set by a predetermined operation on the portable content player 1. As an operation for this, for example, an operation according to a predetermined procedure may be performed with respect to a predetermined operation element that constitutes the operation unit 18.

  In the above state, for example, as shown in FIG. 3, the user holds the portable content player 1 according to how to hold the main body posture control operation. For confirmation, at this time, for example, the body posture control operation is made effective by placing the thumb against the touch sensor corresponding portion 17A.

  As an initial screen displayed on the display screen unit 20A when the content search mode is set here, a title of a certain content is displayed together with an album including the content according to a predetermined rule. . An example of a display mode on the display screen unit 20A at this time is shown in FIG. In this display screen section 20A, “Title 1” is displayed in the upper row and “Album 1” is displayed in the lower row. Actually, a specific title name of a certain content is displayed as “Title 1”, and a specific name of an album in which the content is recorded is displayed as “Album 1”.

  For example, immediately after setting the content search mode, the angle of the X-axis and Y-axis of the portable content player 1 with respect to the horizontal plane is within a certain range, and for example, the upper surface portion 1a of the main body portion 1A is considered to be substantially horizontal. In the state of being in the posture (substantially horizontal state), it is assumed that the main body posture control operation is not performed and the initial screen is displayed.

Then, after the user holds the way shown in FIG. 3, the main body 1 </ b> A of the portable content player 1 is moved from the substantially horizontal state as shown in FIG. It is assumed that the posture is tilted so that the right side surface portion 1e faces downward and faces upward. If the main body 1A is tilted in such a posture, + α is formed as the tilt angle of the X axis with respect to the horizontal plane. In FIG. 4B and FIG. 4H described later, it is assumed that the inclination angle formed by the horizontal plane and the Y axis is 0 ° for the sake of convenience of explanation. Further, the horizontal plane here is a plane perpendicular to the vertical axis shown in the drawing as the direction of gravity.
Then, when the posture of the main body 1A is tilted until the absolute value of the tilt angle + α becomes a certain value or more, for example, as shown in FIG. Switches to the album search screen for searching. FIG. 4C shows a state in which the album title shown in FIG. 4A is displayed. Then, if the inclination posture of the main body 1A where the absolute value of the inclination angle + α is a certain value or more is maintained for a certain time or more, the content of the display screen portion 20A passes, for example, from FIG. 4 (c) to FIG. 4 (d). , Transition is made to FIG. That is, the display of the next album 2 is changed by scrolling the album presented as the search target so far to the left. Then, if the tilt posture in which the absolute value of the tilt angle + α is kept constant is continued as it is, the display on the display screen unit 20A is shown as a transition from (e) → (f) → (g) in FIG. Further, the scrolling is further performed in the left direction, and the contents are changed so that the next album 3 is presented. That is, in this case, the album list is scrolled in ascending order.

  Further, for example, under the display state of the display screen section 20A shown in FIG. 4G, the inclined state shown in FIG. 4H opposite to the inclined state shown in FIG. 4B so far. Assume that the posture of the main body 1A is changed. The inclined state shown in FIG. 4 (h) is a state in which the left side surface portion 1c is downward and the right side surface portion 1e is upward. In this case, the inclination angle of the X axis with respect to the horizontal plane is represented by -α. become. If the absolute value of the inclination angle −α is tilted to a certain level or more, the display content of the display screen unit 20A is as shown in FIG. 4 (g) → (f) → (e) → (d) → The display is changed in the order of (c). That is, the search is performed in such a manner that the album 3 changes from the album 2 to the album 1 by scrolling in the descending order in the right direction, which is opposite to the case where the main body 1A is tilted in the state of FIG. 4B. The subject will be presented.

For example, when the album search screen is scrolled as described above, if the tilt angle + α or −α of the main body 1A is returned to a substantially horizontal state within a certain range, the scrolling stops, The state where the album presented at that time is displayed is maintained. The album presented at this time is handled as the album selected by the user operation.
If the main body 1A is tilted again from this state so that the tilt angles + α and −α are equal to or greater than a certain level from the substantially horizontal state, scrolling to the left or right according to the tilted direction results in: The album to be presented is switched.

Further, for example, as described above, since the main body 1A is in a substantially horizontal state and a certain album is selected, this time, as shown in FIG. Assume that the main body 1A is tilted so that the back surface 1d faces downward. In FIG. 5A and later-described FIG. 5E, the inclination angle formed by the horizontal plane and the X axis is assumed to be 0 °.
In this case, the inclination angle of the Y axis with respect to the horizontal plane is a value larger than 0 represented by + β. If the inclination angle + β is equal to or greater than a certain value, the display screen unit 20A is selected. The search screen of the content recorded in the album is switched to display. The content search screen is, for example, as shown in FIG.

In the content search screen of FIG. 5B, three lines are presented using three lines. Here, the titles “Title 1”, “Title 2”, and “Title 3” are written from the first line to the third line. Actually, however, the content is information that can be specified by the user. The specific title name of is displayed. Further, the arrangement order of the title notation of the contents here corresponds to the reproduction order in the album from the top to the bottom line. That is, if title 1 is the first song in the album, titles 2 and 3 are the second and third songs, respectively.
In this case, since three contents are presented simultaneously in one content search screen, in order to select and specify one of these contents, one cursor CR is It is arranged for any one of the first to third lines.

Then, assuming that the state shown in FIG. 5B is continued and the above-described state in which the inclination angle + β is equal to or larger than a certain value is continued, it is arranged in the title 1 in FIG. 5B. The cursor CR is sequentially moved in ascending order with respect to the title 2 and title 3 in the lower row at regular intervals.
If the state in which the cursor CR is arranged at the title 3 in the bottom row and the state where the inclination angle + β is further kept constant is continued, the transition from (b) to (c) to (d) in FIG. As shown, the list of content titles is scrolled upward, the titles 2, 3, and 4 are displayed, and the titles 3, 4, and 5 are displayed. It is made to go. That is, the title list is scrolled in ascending order. When scrolling upward is performed in this way, the cursor CR is always placed on the bottom line.

  Further, when the display shown in FIG. 5C is performed, the main body 1A is changed from the posture shown in FIG. 5A to the posture shown in FIG. 5E. To do. In contrast to FIG. 5A, FIG. 5E shows a posture in which the front surface portion 1b of the main body 1A faces downward and the back surface portion 1d faces upward. In this posture, the inclination angle of the Y axis with respect to the horizontal plane is represented by −β. If the posture in which the main body 1A is tilted so that the absolute value of the tilt angle −β is equal to or larger than a certain value is continued, the cursor CR assumed to be arranged at the bottom row in FIG. Every time, the titles 5 to 4 and 3 are arranged so as to move sequentially upward. That is, the cursor moves in descending order. Then, if it is assumed that a certain time has passed from here, then, as shown in the transition from FIG. 5 (d) to FIG. 5 (c), the downward scroll is performed this time. , Titles 2, 3, and 4 are displayed. That is, the scroll is in descending order. When scrolling downward is performed in this way, the cursor CR is positioned on the uppermost line. Further, the title search screen is further scrolled downward (in descending order) as shown in the transition from FIG. 5C to FIG. 5B, and titles 1, 2, and 3 are displayed. Will be done.

  In this way, when the portable content player 1 is given a posture in which the absolute values of the inclination angles + β and −β of the Y axis are equal to or greater than a certain value, the tilt is first displayed on the content search screen. The cursor CR for selecting and specifying the content moves upward or downward according to the orientation of the posture. Then, the tilt posture for further moving the cursor CR up is maintained in a state where the cursor CR is arranged in the title of the content on the top row, or further in a state where the cursor CR is arranged in the title of the content on the bottom row. When the tilt posture for moving the cursor CR downward is maintained, the screen is scrolled in the upward direction or the downward direction.

In a normal content search operation, when a determination operation is performed in a state where one content is searched and selected, reproduction from the content selected at that time is started. However, in the main body posture control operation of the present embodiment, the determination operation for the selected content is performed as follows.
As described above, the cursor CR moves in the vertical direction by giving the main body 1A of the portable content player 1 an inclination posture in which the absolute values of the inclination angles + β and −β of the Y axis are equal to or larger than a certain value. Alternatively, scrolling in the vertical direction is performed, but when the main body 1A is returned to the substantially horizontal state from the inclined posture, the scroll operation and the movement of the cursor CR are stopped. Therefore, in this way, when the main body 1A is in a substantially horizontal state and the movement of the cursor CR is stopped, the content on which the cursor CR is arranged is the currently selected content. Therefore, in this case, the determination operation for content reproduction is performed when the movement of the cursor CR is stopped and the state of being placed in a certain content has passed for a certain time (for example, about 3 seconds) or more. It will be treated as if it were. That is, as described with reference to FIG. 5, the user moves the main body cursor CR and scrolls by an operation of giving an inclination angle to the Y axis, and places the cursor on the target content. Then, when the cursor CR is placed on the target content, the main body 1A is returned to a substantially horizontal state and is kept waiting for a certain time. Thereby, the reproduction of the content selected by the user and arranged with the cursor CR is started.

In the present embodiment, the main body posture control operation is enabled only when contact detection is performed by the touch sensor 17. Based on this, in the present embodiment, when the touch sensor 17 is not contact-detected by releasing the finger applied to the touch sensor corresponding part 17A during the main body posture control operation, the main body part Even if 1A remains in a posture with an inclination angle greater than or equal to a certain angle, the scrolling and cursor movement that have been executed so far are stopped. In the following, the scroll operation on the album search screen, the scroll operation on the content search screen and the cursor movement operation, and the operation in which the selection target (album, content) is changed and set in accordance with this will be summarized. This is called “selection object changing operation”.
If the selection target change operation so far has been performed on the content search screen shown in FIG. 5, when the stop state has passed for a certain period of time, the determination operation for the selected content is performed. As a result, the reproduction of the content is started.
That is, in the present embodiment, the selection target changing operation can be stopped by returning the posture of the main body 1A to a substantially horizontal state or releasing the finger from the touch sensor corresponding unit 17A. The determination operation is performed by continuing the state for a certain time or more.

  From the above description, as an operation for content search according to the present embodiment, first, the main body of the portable content player 1 is inclined in the horizontal direction (an inclination angle is given with respect to the X axis). By changing the posture, the selection operation for the album is performed, and the content in the album is targeted by changing the posture so as to give an inclination in the vertical direction (giving an inclination angle with respect to the Y axis) This means that the selection operation can be performed. In addition, a determination operation can be performed by maintaining a substantially horizontal main body posture or a state where a finger or the like is not touched with respect to the touch sensor corresponding portion 17A for a certain period of time, for example, reproduction of content can be started. Yes.

With the operation as described above, the user does not need to perform operations on the operators such as the jog dial 18a and the key buttons 18b and 18c for content search.
If the operation with respect to the operation element becomes unnecessary, for example, the user of the portable content player 1 can obtain an unprecedented operational feeling, and the interest in operating the portable content player 1 is increased. Become.
In particular, portable content players tend to reduce the number of physical controls as much as possible in consideration of portability and a reduction in failure rate, and the portable content player itself is required to be downsized. Therefore, the operator provided there is also very small. For this reason, there is a problem that the operation using the operation of the portable content player tends to be complicated. Therefore, by applying the main body posture control operation of the present embodiment to the portable content player, the operation can be a simple act of simply tilting the main body in a predetermined direction. You are free from complexity. Furthermore, the body posture control operation can be performed accurately as long as it has a portable content player even if it is difficult to perform key operations reliably due to wearing gloves or the like. Therefore, it is very useful in applications such as listening to music with a portable content player while skiing.
As described above, the main body posture control operation according to the present embodiment is particularly effective when applied to a portable device or the like having a small content reproduction function.
The main body posture control operation shown in FIGS. 4 and 5 detects positive and negative inclination angles in one axial direction, and in ascending order, descending order (positive direction, The selection of the operation target is changed in the reverse direction. In such a configuration, by changing the direction of tilting the main body, the selection changes from ascending to descending, or from descending to ascending. It can be said that

The flowchart of FIG. 6 shows an example of a procedure that is executed by the control unit 11 in order to realize the main body posture control operation of the present embodiment described with reference to FIGS. 4 and 5. The procedure shown in this figure can be viewed as a control processing procedure obtained by loading and executing a program stored in the nonvolatile memory unit 12, for example, by a CPU that is a hardware component in the control unit 11.
Such a program is written and stored in the non-volatile memory unit 12 in the manufacturing process, and is stored in a removable storage medium, for example, and then installed by using the storage medium. It is conceivable to store the content player 1. Further, it may be stored in a storage device such as a server on the network, acquired by downloading via the network, and installed in the portable content player 1.

For example, the control unit 11 sets the content search mode by the body posture control operation in response to an operation instruction signal input from the operation unit 18 to request the content search mode by the body posture control operation. The routine procedure shown in FIG. 6 is executed.
First, in FIG. 6, a detection signal is captured from the touch sensor 17 in step S101, and based on this detection signal, it is determined in step S102 whether or not the detection signal indicates presence of contact. For confirmation, when the detection signal of the touch sensor 17 indicates that there is a touch, it means that the user's finger is touching the touch sensor corresponding portion 17A.
If a negative determination result is obtained in step S102, the process proceeds to step S113. If a positive determination result is obtained, the process proceeds to step S103 and subsequent steps.

First, in step S103, the detection signal of the acceleration sensor obtained from the acceleration sensor 21 via the sensor signal processing circuit 22 is fetched. Based on the fetched detection signal, the portable content player 1 performs the following step S104. The posture state of the main body 1A is determined.
As described above, in the case of the present embodiment, based on the detection signal obtained by detecting acceleration by the acceleration sensor 21, the inclination angle ± α of the X axis with respect to the horizontal plane set for the main body 1A, The value of the inclination angle ± β of the Y axis can be obtained. The values of these inclination angles indicate the posture state of the main body 1A. For example, in the configuration of a general acceleration sensor, such inclination angle detection uses gravitational acceleration as static acceleration, but the horizontal plane is determined to be orthogonal to the direction of gravitational acceleration. Therefore, it is possible to obtain the inclination angle with respect to the horizontal plane using the gravitational acceleration.

In step S104, as the determination result of the posture state,
1. The absolute value of the X-axis tilt angle + α is a certain value or more (threshold value a or more)
2. The absolute value of the X-axis tilt angle -α is a certain value or more (threshold value b or more)
3. The absolute value of the tilt angle + β of the Y axis is greater than or equal to a certain value (threshold c or greater)
4). The absolute value of the tilt angle -β of the Y axis is a certain value or more (threshold value d or more)
5). The absolute value of the X-axis tilt angle ± α and the absolute value of the Y-axis tilt angle ± β are all less than a certain value.
Any one of the five determination results is output.
In addition, about the said determination results 1-5, the attitude | position corresponding to the determination result 1 is represented by FIG.4 (b). Moreover, the attitude | position corresponding to the determination result 2 is represented by FIG.4 (h). The posture corresponding to the determination result 3 is represented by FIG. 5A, and the posture corresponding to the determination result 4 is represented by FIG. The determination result 5 corresponds to a substantially horizontal state.
In practice, for example, it is possible that the posture value is such that the absolute value of the tilt angle + α of the X axis is greater than or equal to the threshold value a and the absolute value of the tilt angle + β of the Y axis is greater than or equal to the threshold value c. In such a case, a posture corresponding to an axis having a larger inclination angle value is adopted as the determination result. That is, as described above, in the posture state in which the absolute value of the X-axis tilt angle + α is equal to or greater than the threshold value a and the absolute value of the Y-axis tilt angle + β is equal to or greater than the threshold value c, the X-axis tilt angle + α When the inclination angle + β of the Y axis is compared with the inclination angle + α of the X axis, the determination result in step S104 is as follows:
1. The absolute value of the X-axis tilt angle + α is a certain value or more (threshold value a or more)
It is supposed to be.
Note that the threshold values a, b, c, and d used for the determination of the posture state are not necessarily set to the same value. As an example, considering the actual use, when the user has the portable content player 1 as shown in FIG. 3, the tilt of the Y-axis is set so that the display screen unit 20A is easy to see even in a normal state. It is generally considered that the posture is in a position state in which the angle + β is formed to some extent. In consideration of this, it is preferable to set a certain large value for the threshold value c corresponding to the ascending order search of the content list. Conversely, when the content list is searched in descending order, if the inclination angle −β is too large, it is difficult for the user to view the display screen portion 20A. Therefore, it is preferable to set a certain small value for the threshold value d.

If it is determined in step S104 that the absolute value of the inclination angle + α of the X axis is greater than or equal to a certain value, in step S105, FIG. 4 (c) → (d) → (e) → (f) → (f As described as the transition according to g), the control process for changing the album to be selected according to the scrolling is executed while scrolling the album list displayed on the display screen unit 20A in the left direction.
If it is determined in step S104 that the absolute value of the inclination angle -α of the X axis is greater than or equal to a certain value, in step S106, (g) → (f) → (e) → (d ) → As described as the transition by (c), the album list on the album search screen displayed on the display screen portion 20A is scrolled to the right, and the selection target album is changed according to the scroll. Control processing is executed.

If it is determined in step S104 that the absolute value of the tilt angle + β of the Y axis is greater than or equal to a certain value, it is described in step S107 as a transition from FIG. 4 (b) → (c) → (d). As described above, in the content search screen displayed on the display screen portion 20A, in the state in which the cursor CR is moved downward and the cursor CR is arranged at the bottom row, the content list is moved upward from the bottom. While performing the process of scrolling, a control process for changing and setting the content to be selected according to the result of the selection object changing operation is executed.
If it is determined in step S104 that the absolute value of the tilt angle -β of the Y axis is greater than or equal to a certain value, the transition in FIG. 4 (d) → (c) → (b) is performed in step S108. As described above, in the content search screen displayed on the display screen portion 20A, in the state in which the cursor CR is moved upward and the cursor CR is arranged on the top line, the content list is moved downward from the top. The control process for changing and setting the content to be selected according to the result of the selection object change operation is executed while performing the process of scrolling to the right.

  In step S104, the determination result that the absolute value of the inclination angle ± α of the X axis and the absolute value of the inclination angle ± β of the Y axis are all less than a certain value (less than the threshold values a, b, c, and d, respectively). If it is obtained, the process proceeds to step S109 and subsequent steps.

  In step S109, the album search screen or the content search screen in a state where the scroll display or the movement display of the cursor CR performed so far is stopped is displayed. In addition, when a negative determination result is obtained by determining whether or not the stop state of the selection target changing operation started in step S109 has been continued for a predetermined time or more in the next step S110, for example, Once the routine shown in this figure is exited, the process returns to step S101. On the other hand, if it is determined in step S110 that the stopped state has continued for a certain time or longer, the process proceeds to step S111.

In step S111, it is determined whether or not the current selection target change operation is stopped while the content search screen is displayed. If a negative determination result is obtained that the current selection target change operation is stopped not on the content search screen but on the album search screen, the routine returns to step S101 so as to exit this routine. On the other hand, if a positive determination result is obtained in step S111, the process proceeds to step S112.
If a positive determination result is obtained in step S111, the cursor movement and scrolling are stopped while the content search screen is displayed. Therefore, the cursor CR is in a state in which a certain content is selected and specified. It will be in. In step S112, selection determination is made for the content on which the cursor CR is placed. That is, in this case, control processing for reading out the data of the content where the cursor CR is arranged from the content storage unit 13 and outputting it is executed.

If a negative determination result is obtained in step S102 that the detection signal of the touch sensor 17 does not indicate presence of contact, the process proceeds to step S109.
For example, when the user has not yet touched the touch sensor corresponding unit 17A after the content search mode has been set, a negative result will be continuously obtained depending on step S102, and the scroll display is stopped by step S109. After that, the flow of the procedure of outputting a negative result in step S110 or step S111 (the initial display of the content search mode is the album search screen) and returning to step S101 is repeated. . That is, unless the user touches the touch sensor corresponding portion 17A with a finger or the like, the main body posture control operation is not effective regardless of the posture given to the main body portion 1A.
Further, even when a negative determination result is obtained in step S102 from the state where the selection target changing operation on the album search screen or the content search screen has been executed so far, the process proceeds to step S109, so that As described above, the selection target changing operation is stopped in response to the release of the finger from the touch sensor corresponding unit 17A. In addition, after this, if the procedure of steps S110, S111, and S112 is executed to stop the selection target changing operation on the content search screen for a predetermined time or longer, the selection is specified at that time. Content playback is started.

By the way, in the description so far, the main body posture control operation targets (operation targets) are the album selection from the album list and the content selection from the content list. As an invention of the present application, any operation target that can be applied in an operation related to content reproduction can be a target of a body posture control operation.
For example, it is conceivable that volume control for content to be reproduced and output is the target of the body posture control operation. That is, for example, by setting the volume control to the X axis (Y axis) of the portable content player 1 of the present embodiment, the volume is increased when the absolute value of the tilt angle + α of the X axis exceeds a certain value. If the absolute value of the inclination angle -α of the X axis exceeds a certain value, the volume is controlled to be reduced. In addition to this, it is also conceivable to apply fast-forwarding, fast-rewinding, etc. with respect to the content being played back.
Further, as the main body posture control operation corresponding to one axis, it is not always necessary to use the plus and minus tilt angles as effective operations, and only one of them may be used. For example, when selecting an arbitrary selection item, when the absolute value of the X-axis tilt angle + α becomes a certain value or more, the selection item is sequentially changed according to a predetermined direction, but the X-axis tilt angle −α When the absolute value of the value exceeds a certain value, the selection item is not changed according to the opposite direction. For example, the change of the selection item is stopped. Good.
In addition, as described above, with respect to operations such as cursor movement, scrolling, and volume control, the moving speed and the amount of change per unit time can be made variable according to the magnitude of the tilt angle. For example, consider moving the cursor, scrolling, etc. to increase the speed of movement as the tilt angle increases, and for volume control, consider increasing the amount of change per unit time as the tilt angle increases. Can do.
In addition, for example, with respect to operations such as cursor movement, scrolling, and volume control as described above, in a state where these operations are executed by tilting the main body, predetermined operations on other physical operators are performed. It is also conceivable to change the moving speed and the amount of change per unit time by performing the above. For example, if the jog dial 18a is rotated in one direction along the arrow A while the main body is tilted in a certain direction to execute the cursor movement operation, the movement speed of the cursor increases, and the other direction It is used in such a way that it gets slower as you turn it around.
Further, as described above, in the above description, the content to be played back in the portable content player 1 is audio data, but it may be other content such as an image. is there.
Further, under the present invention, the main body attitude control operation is applied to the content reproduction device. For example, various small devices such as mobile phones that can be held in hands other than the content reproduction device, electronic devices, etc. It is also useful when applied to.
In addition, some content playback apparatuses are already known which have an acceleration sensor for the purpose of detecting free fall for the purpose of protecting a storage medium such as an HDD, but the present invention is applied to such an apparatus. In this case, the acceleration sensor for detecting the free fall can be used for the main body posture control operation, and there is no need to newly add an acceleration sensor.

1 is a perspective view showing an example of the appearance of a portable content player as an embodiment of the present invention. It is a block diagram which shows the structural example of the portable content player of embodiment. It is a figure which shows the example of how to hold in the case of performing main body attitude | position control operation as embodiment. It is a figure which shows the example of main body attitude | position control operation with the transition of the example of a display mode of a display screen part. It is a figure which shows the example of main body attitude | position control operation with the transition of the example of a display mode of a display screen part. It is a flowchart which shows the example of a procedure for implement | achieving main body attitude | position control operation.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Portable content player, 1A main-body part, 1a upper surface part, 1b front surface part, 1c left side surface part, 1d back surface part, 1e right side surface part, 1f lower surface part, 11 control part, 12 non-volatile memory part. 13 content storage unit, 14 playback processing unit, 15 audio output processing unit, 16 headphone terminal, 17 touch sensor, 18 operation unit, 19 display memory, 20 display unit, 20A display screen unit, 21 acceleration sensor, 22 sensor signal processing unit , 23 External data interface

Claims (10)

  1. An inclination angle detecting means for detecting an inclination angle with respect to a predetermined axial direction set in the main body;
    An operation target control unit configured to give a predetermined change according to an inclination angle detected by the inclination angle detection unit, with respect to a predetermined operation object related to content reproduction;
    A playback apparatus comprising:
  2. The inclination angle detection means detects a positive inclination angle with respect to a predetermined reference plane and a negative inclination angle as an inclination angle with respect to a predetermined axial direction,
    The operation object control means makes the direction of change given to the predetermined operation object be positive and reverse when the positive inclination angle is detected and when the negative inclination angle is detected. Control
    The reproducing apparatus according to claim 1.
  3. The tilt angle detecting means includes
    An inclination angle for each of two or more different predetermined axial directions set in the main body is detected,
    The operation object control means is configured to give a change to each different operation object according to the inclination angle for each of the two or more axial directions detected by the inclination angle detection means.
    The reproducing apparatus according to claim 1.
  4. In addition to further comprising image display output means for displaying and outputting a selection candidate item presentation image, which is an image for presenting a plurality of selection candidate items that fall under a predetermined category in a predetermined order,
    The operation target control means is
    The selection candidate items presented by the selection candidate item presentation image are selected as the operation target, and the selection candidates of the selection target are sequentially selected in ascending or descending order according to the tilt angle detected by the tilt angle detecting means. To change items,
    The reproducing apparatus according to claim 1.
  5. Auxiliary operating means provided in the main body;
    A discriminating unit for discriminating whether or not an operation is performed on the auxiliary operator unit;
    The operation target control means is
    Only when it is determined that the operation with respect to the auxiliary operator means is being performed by the determination means, a change is made to the operation target according to the inclination angle detected by the inclination angle detection means. Being
    The reproducing apparatus according to claim 1.
  6. The auxiliary operator means is adapted to detect the presence or absence of contact with a predetermined part of the main body,
    The determining means determines whether or not an operation is being performed on the auxiliary operator means based on the detection result of the presence or absence of contact by the auxiliary operator means.
    The reproducing apparatus according to claim 5, wherein:
  7. The operation target control means is
    When the tilt angle detected by the tilt angle detecting means is within a certain range, the change given to the operation target is stopped, and the state where the tilt angle is within the certain range continues for a certain time or more Is determined as an operation for determining the predetermined operation target.
    The reproducing apparatus according to claim 1.
  8. The operation target control means is
    When it is determined that the operation to the auxiliary operator means is not performed by the determination means when the change to the operation object is given, the change to the operation object is stopped. Thereafter, when the state where the operation of the auxiliary operation means is not performed by the determination means is continued for a certain period of time, the operation for determining the predetermined operation object is performed. Is to be judged as
    The reproducing apparatus according to claim 5, wherein:
  9. An inclination angle detection procedure for detecting an inclination angle about a predetermined axial direction set in the main body,
    An operation target control procedure for giving a predetermined change according to the tilt angle detected by the tilt angle detection procedure for a predetermined operation target related to content reproduction;
    A method for controlling a user interface in a content reproduction apparatus, comprising:
  10. A detection output acquisition procedure for acquiring and acquiring a detection output of an inclination angle detection means for detecting an inclination angle for a predetermined axial direction set in the main body;
    An operation target control procedure configured to give a predetermined change with respect to a predetermined operation target related to content reproduction, based on an inclination angle indicated by the detection output acquired by the detection output acquisition procedure;
    Is executed by a playback apparatus capable of playing back content.
JP2006103142A 2006-04-04 2006-04-04 Reproducing device, user interface control method, and program Pending JP2007280461A (en)

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