JP2008283569A - Information processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suitably interpret a command from a remote controller even when it is difficult to properly receive the start and the end of the command from the remote controller. <P>SOLUTION: In a cellular phone 1 applicable to an information processor, a remote control command transmitting/receiving part 24 receives a remote control command from the other device in a first reproduction state of a media player, a remote control command analysis part 25 analyzes the received remote control command, the remote control command notification part 26 notifies a predetermined application program of the received remote control command, when the remote control command can not be received after notifying the predetermined application program of the remote control command indicating the start of a change instruction of a reproduction state, notifies the predetermined application program of the remote control command indicating the end of the change instruction of a reproduction state to be paired. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an information processing apparatus, and more particularly, to an information processing apparatus capable of controlling a media player with a remote controller of a counter device.

  In recent years, for example, Bluetooth (registered trademark) is known as a wireless communication technology that can be applied to electronic devices and the like. By using this Bluetooth wireless communication technology, audio data can be transferred from a portable information terminal such as a mobile phone or a portable music player to an opposite device such as a headset without using an audio cable.

  As profiles for transmitting audio data, for example, “Advanced Audio Distribution Profile (A2DP)” (Non-Patent Document 1) and “Generic Audio / Video Distribution Profile” (Non-Patent Document 2) are known. These are standards for performing streaming transfer of audio data in real time between devices connected via Bluetooth.

  For example, in portable information terminals such as mobile phones and portable music players, audio data is compressed in a format such as SBC (Sub Band Coding), MP3 (MPEG1 Audio Layer-3), or ATRAC (Advanced Transform Acoustic Coding) 3. Transfer in packets. On the other hand, an opposing device such as a speaker or a headset does not wait for all packets to be received and reproduces them simultaneously with reception of data. As a result, the user can listen to the sound from the portable information terminal, portable music player, etc. in an almost real time on the opposite device such as a speaker or a headset.

  Recently, as a technology for reproducing audio data (data in an audio file format) using Bluetooth, so that an arbitrary file can be identified and reproduced from a plurality of audio files recorded in a music reproduction device, A technique that can be operated from a mobile phone is known (for example, see Patent Document 1).

  For example, when audio data is transferred from a mobile phone to an opposite device such as a headset using Bluetooth, the audio data is transferred or reproduced by transmitting a command to the mobile phone using a remote controller provided in advance in the opposite device.・ Technologies related to AV remote control services for controlling stopping and the like have also been proposed. The specifications of the technology related to the AV remote control service are defined by the standard of “AVRCP (Audio / Video Remote Control Profile)” (Non-Patent Document 3).

The AVRCP defines a packet format for the AV remote control command, and does not define the interpretation or operation method of the remote control command. Therefore, the technology related to the AV remote control service depends on the implementation of a mobile phone or the like.
JP 2006-94448 A Advanced Audio Distribution Profile (Bluetooth SIG) Generic Audio / Video Distribution Profile (Bluetooth SIG) Audio / Video Remote Control Profile (Bluetooth SIG)

  In general, the opposite device that controls the media player by a remote controller has one command such as “play” or “pause” assigned to a different button, and another device such as “play” or “pause”. Some commands are assigned to the same button and toggle.

  In the former case, when a command is transmitted to a mobile phone from a remote controller provided in advance in the opposite device, for example, when the command is a “Play command”, when the user presses the Play button indicating the “Play command”, the “Play- The command “Press” is sent from the remote control, and the command “Play-Release” is sent when the user releases the Play button.

  In the latter case, for example, generally, for example, the commands “forward” and “fastforward” are assigned to the same button, and the “forward” command ( And a “fastforward” command (fast forward command) when the user presses the button for a short time.

  Specifically, when a button to which a “forward” or “fastforward” command is assigned is pressed by the user, a “forward-press (or fastforward-press)” command is issued from the remote control when the button is pressed. In addition to the transmission, a command of “forward-release (or fastforward-release)” is transmitted from the remote control at the time of releasing the button press. Short or long press of the button by checking the interval between “forward-press (or fastforward-press)” and “forward-release (or fastforward-release)” corresponding to pressing and releasing the button The mobile phone side determines whether or not the button is pressed. That is, if a “forward-release (or fastforward-release)” command is received within a predetermined time after receiving a “forward-press (or fastforward-press)” command, it is determined as a short press, and a predetermined time If the command of “forward-release (or fastforward-release)” cannot be received within, it is determined that the button is long pressed.

  If it is determined to be a short press, the command received from the opposite device is interpreted as a “forward” command (music feed command), whereas if it is determined to be a long press, The command received from the device is interpreted as a “fastforward” command (fast forward command).

  As described above, even when an opposite device including any type of remote controller is used, generally, for example, the start of a paired command such as “fastforward-press” and “fastforward-release” By receiving the end from the remote control, the command from the remote control is interpreted.

  However, when the mobile phone and the opposite device are connected by A2DP, if the distance between the mobile phone and the opposite device increases, a link loss that is a state in which the connection with the opposite device is lost (connection is lost) is generated. Can occur. Therefore, when such a link loss occurs after receiving the start of a command from the remote controller, it becomes impossible to receive the end of the command from the remote controller, and it becomes difficult to properly interpret the command from the remote controller.

  In particular, in the case of a counter device that toggles when multiple commands are assigned to the same button, check the interval between “press” and “release” corresponding to pressing the button and releasing the button. In order to interpret the command after judging whether it is a short press or long press, from the point of receiving “press” corresponding to the button press, receive “release” corresponding to the release of the press Since the time until the time is relatively long, there is a high possibility that the end of the command cannot be received from the remote controller due to the occurrence of link loss.

  Specifically, for example, if a link loss occurs when “fastforward-press” is received, “fastforward-release” cannot be received, and a problem that fast-forwarding does not stop occurs.

  The present invention has been made in view of such a situation, and even when it is difficult to properly receive the start and end of a command from the remote controller, the command from the remote controller can be suitably interpreted. An object of the present invention is to provide an information processing apparatus that can perform the above processing.

  In order to solve the above-described problem, an information processing apparatus according to the present invention includes a receiving unit that receives, via wireless communication, a remote control command for instructing a change in the playback state of a predetermined application program transmitted by an opposite device; Analysis means for analyzing the remote control command received by the means, and notification means for notifying the received remote control command to a predetermined application program, wherein the notification means sets a predetermined remote control command indicating the start of a playback state change instruction. If a situation occurs in which the remote control command cannot be received after notification to the application program, the remote control command indicating the end of the playback state change instruction is paired with the remote control command indicating the start of the playback state change instruction. It is characterized by notifying a predetermined application program .

  According to the apparatus of the present invention, even when it is difficult to appropriately receive the start and end of a command from the remote controller, the command from the remote controller can be suitably interpreted.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, in the vicinity of a mobile phone 1, a headset 2 that can be applied as a counter device according to the present invention is arranged. The headset 2 can receive audio data transferred from the mobile phone 1 using wireless communication (for example, Bluetooth) and reproduce it in real time. The headset 2 is provided with a remote control 3 that can be remotely operated with respect to the mobile phone 1 via wireless communication.

  FIG. 2 shows an internal configuration of the mobile phone 1 of FIG. As shown in FIG. 2, the mobile phone 1 includes a control unit 11, a display unit 12, an input unit 13, a storage unit 14, a radio telephone communication unit 15, a signal processing unit 16, a PCM codec 17, a microphone 18, a speaker 19, A media player control unit 20, a content processing unit 21, and a short-range wireless communication unit 22 are connected to each other via a bus 23.

  The control unit 11 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory). The CPU is loaded into the RAM from a program stored in the ROM or the storage unit 14. Various processes are executed in accordance with various application programs, and various control signals are generated and supplied to each unit to control the mobile phone 1 in an integrated manner. The RAM appropriately stores data necessary for the CPU to execute various processes.

  The display unit 12 includes, for example, an LCD (Liquid Crystal Display), and the input unit 13 includes operation keys and operation buttons (not shown).

  The radio telephone communication unit 15 receives a radio signal transmitted from a base station (not shown) via an antenna (not shown), down-converts the received radio signal to obtain an intermediate frequency signal, and further performs orthogonal demodulation. Processing, despreading and combining processing of each path by a RAKE receiver (not shown) are performed. Thereafter, the received packet data output from the RAKE receiver is input to the signal processing unit 16.

  The signal processing unit 16 includes, for example, a DSP (Digital Signal Processor) and the like, first separates received packet data for each medium, and performs a decoding process on the separated data for each medium.

  For example, when the received packet data includes audio data, the signal processing unit 16 decodes the audio data using a speech codec. In addition, when the received packet data includes moving image data, the signal processing unit 16 decodes the moving image data using a video codec. Further, when the received packet data is download content, the signal processing unit 16 expands the download content.

  The digital audio signal obtained by the decoding process is PCM decoded by the PCM codec 17 and then amplified and output from the speaker 19. On the other hand, the digital moving image signal decoded by the video codec is supplied to the display unit 12 via the bus 23 and displayed.

  The media player control unit 20 controls, for example, a music player having a music control function. Of course, the mobile phone 1 is provided with a terrestrial digital one seg / radio receiver, etc., for example, a terrestrial digital one seg player realized by executing an application program when receiving a terrestrial digital one seg broadcast wave, etc. Various media players may be controlled.

  When the content processing unit 21 controls the music player by the media player control unit 20, for example, the audio data encoded by an encoding method such as AAC or MP3 is once decoded corresponding to the encoding method. After decoding by the method, re-encoding processing or the like is performed by another encoding method (for example, SBC (Sub Band Coding)).

  The short-range wireless communication unit 22 includes, for example, a module that performs wireless communication using Bluetooth (registered trademark), and performs wireless communication with the headset 2 that exists in the vicinity of the mobile phone 1. Of course, wireless communication other than Bluetooth (for example, infrared communication) may be used. The short-range wireless communication unit 22 includes a remote control command transmission / reception unit 24, a remote control command analysis unit 25, a remote control command notification unit 26, a media packet transmission unit 27, and the like.

  When receiving various remote control commands from the remote control 3 provided in the headset 2 via short-range wireless communication, the remote control command transmission / reception unit 24 supplies the received various remote control commands to the remote control command analysis unit 25. In addition, the remote control command transmission / reception unit 24 transmits a response command generated according to the analysis result by the remote control command analysis unit 25 to the headset 2 via the short-range wireless communication.

  The remote control command analysis unit 25 interprets the remote control command supplied from the remote control command transmission / reception unit 24 by an interpretation method corresponding to each media player. When the media player is a music player, remote control commands received from the headset 2 as the opposite device when the media player is played are, for example, “play”, “pause”, “stop”, “fastforward”, “rewind”, It is interpreted as one of various remote control commands such as “forward” and “backward” (commands for instructing to change the playback state of the media player in the media player control unit 20).

  At this time, when the user presses a button on the remote control 3 to which various remote control commands are assigned, “press” and “release” corresponding to the press of the button and release of the press are interpreted, and various remote control commands are interpreted. The start and end of are interpreted. For example, “fastforward-press” and “fastforward-release” corresponding to pressing of the button and release of the pressing are interpreted, and the start and end of the “fastforward” remote control command are interpreted.

  For example, when remote control commands of “forward” and “fastforward” are assigned to the same button of the remote control 3, when the user presses a button to which a remote control command of “forward” and “fastforward” is assigned, Short or long press of the button by checking the interval between “forward-press (or fastforward-press)” and “forward-release (or fastforward-release)” corresponding to pressing and releasing the button If the remote control command analysis unit 25 determines whether or not it is a press, and if it is determined that the press is a short press, the remote control command received from the headset 2 is a “forward” remote control command (music feed command). On the other hand, if it is determined that the key is a long press, the remote control command received from the headset 2 is “fastforward”. It is interpreted as a command (fast forward command).

  The remote control command notification unit 26 appropriately notifies the media player control unit 20 of the start or end of the instruction to change the playback state of the media player indicated by the received remote control command according to the analysis result by the remote control command analysis unit 25.

  The media media packet transmission unit 27 generates media packets according to various media players and data encoding methods, and sequentially transmits the generated media packets to the headset 2 via short-range wireless communication.

  Next, the media player control process in the mobile phone 1 of FIG. 2 will be described with reference to the flowchart of FIG. The media player control process is started when the short distance wireless communication unit 22 is activated by the user operating the input unit 13 and a media player (for example, a music player) is executed.

  In step S <b> 1, the remote control command transmission / reception unit 24 of the short-range wireless communication unit 23 waits for reception of a remote control command transmitted from the headset 2 as the opposite device according to the control of the control unit 11. In step S <b> 2, the remote control command transmission / reception unit 24 determines whether or not the link loss disconnection notification accompanying the occurrence of the link loss is received from the headset 2 by wireless communication. It is determined whether or not a link loss has occurred. In addition, when the distance between the mobile phone 1 and the headset 2 is increased, a link loss that is a state in which the connection with the headset 2 is lost occurs. Further, such a situation such as link loss is defined as “a situation where a remote control command cannot be received”.

  If it is determined in step S2 that a link loss has occurred between the mobile phone 1 and the headset 2, the remote control command transmission / reception unit 24 indicates that a link loss has occurred between the mobile phone 1 and the headset 2. The determination result is supplied to the remote control command notification unit 26. In step S3, the remote control command notifying unit 26 determines whether the mobile phone 1 and the headset are connected based on the determination result that the link loss has occurred between the mobile phone 1 and the headset 2 supplied from the remote control command transmitting / receiving unit 24. 2 until the link loss between the mobile phone 1 and the headset 2 is determined to have occurred, and until the media player starts to change the playback state. It is determined whether or not the command to be shown has already been notified to the media player as the upper application program.

  For example, when it is determined that a link loss has occurred between the mobile phone 1 and the headset 2, the user operates the remote control 3 provided in the headset 2, for example, a “play-press” command. (Command indicating start of instruction to change “play” to playback state) is received by mobile phone 1, and the “play-press” command is a media as a higher-level application program controlled by media player control unit 20. When notified to the player, it is determined that a command indicating the start of an instruction to change the playback state of the media player has already been notified to the media player as the upper application program.

  On the other hand, for example, the remote control 3 provided in the headset 2 is not operated by the user until it is determined that a link loss has occurred between the mobile phone 1 and the headset 2, for example. If the media player as the upper application program controlled by the player control unit 20 is not notified, it is determined that the command indicating the start of the change instruction of the playback state of the media player is not notified to the media player as the upper application program. Is done.

  When it is determined that the command indicating the start of the instruction to change the playback state of the media player has already been notified to the media player as the higher-level application program, the change of the playback state of the media player is accompanied by the occurrence of a link loss. Even though only the command indicating the start of the instruction is notified to the media player as the higher-level application program, the command indicating the end of the instruction to change the playback state of the media player paired with the remote control command is sent to the media player. There is a situation in the media player that the notification is not made.

  If it is determined in step S3 that the command indicating the start of the instruction to change the playback state of the media player has already been notified to the media player as the higher-level application program, the remote control command notification unit 26 has already been notified in step S4. A command for ending the change instruction of the media player, which is paired with a command indicating the start of the change instruction of the playback state of the media player, is notified to the media player as the upper application program.

  For example, when a “play-press” command (a command indicating the start of an instruction to change “play” to a playback state) has already been notified to a media player as a higher-level application program controlled by the media player control unit 20 The “play-release” command that is paired with the “play-press” command is notified to the media player.

  In addition, a “fastforward-press” command (a command indicating start of an instruction to change “play” to a playback state) has already been notified to a media player as a higher-level application program controlled by the media player control unit 20. In this case, a “fastforward-release” command that is paired with a “fastforward-press” command is notified to the media player.

  If it is determined in step S3 that a command indicating the start of the instruction to change the playback state of the media player has not been sent to the media player as the higher-level application program, the processing in step S4 is skipped. Thereafter, the process returns to step S1, and the processes after step S1 are repeatedly executed.

  On the other hand, if it is determined in step S2 that no link loss has occurred between the mobile phone 1 and the headset 2, the remote control command transmission / reception unit 24 selects a new remote control command (for example, “fastforward” or the like) in step S5. Command) is received from the headset 2.

  When it is determined in step S5 that a new remote control command has been received from the headset 2, the remote control command transmission / reception unit 24 supplies the remote control command received in step S6 to the remote control command analysis unit 25. The remote control command analysis unit 25 interprets the acquired remote control command by an interpretation method corresponding to each media player. Specifically, the remote control command received from the headset 2 as the opposite device during playback of the media player is, for example, “play”, “pause”, “stop”, “fastforward”, “rewind”, “forward”, And various remote control commands such as “backward” (commands to change the playback state of the media player controlled by the media player control unit 20).

  The remote control command notifying unit 26 sends the received new remote control command to the media player control unit 20 (that is, for example music as a higher-level application program controlled by the media player control unit 20) according to the analysis result by the remote control command analysis unit 25. Player). As a result, the remote control commands transmitted from the headset 2 can be sequentially notified to the media player, and the playback state instructed by the remote control command can be changed.

  On the other hand, if it is determined in step S5 that a new remote control command has not been received from the headset 2, the process in step S6 is skipped. Thereafter, the process returns to step S1, and the processes after step S1 are repeatedly executed.

  In the embodiment of the present invention, the link loss between the mobile phone 1 and the headset 2 is determined by determining whether or not the link loss disconnection notification accompanying the occurrence of the link loss is received from the headset 2 by wireless communication. If it is determined that a link loss has occurred between the mobile phone 1 and the headset 2, it is determined that a link loss has occurred between the mobile phone 1 and the headset 2. Until it is determined whether or not a command indicating the start of the change instruction of the playback state of the media player has already been notified to the media player as the higher-level application program, the start of the change instruction of the playback state of the media player is started. If it is determined that the command indicated has already been notified to the media player, A command pair that indicates the start of the change instruction reproduction state of Iapureiya, the end of the command instruction to change the media player can be notified to the media player as an upper application program.

  As a result, even if it is difficult to properly receive the start and end of the command from the remote controller due to the occurrence of link loss, the start and end of the paired remote control command is It can be received by the media player, a situation in which the command from the remote control cannot be interpreted by the media player can be avoided, and the remote control command can be suitably interpreted.

  Accordingly, it is possible to improve the usability when the media player is controlled by the remote controller of the opposite device.

  By the way, even if a link loss does not occur between the mobile phone 1 and the headset 2, a situation in which it is difficult to appropriately receive the start and end of the command from the remote controller may occur. For example, a command (for example, a “play-press” command) indicating the start of a change instruction for the playback state of the media player is notified to the media player, and further, a command (for example, a start instruction for changing the playback state of the media player) When a “play-press” command is received, a command indicating the end of the instruction to change the playback state of the media player paired with the previously received remote control command has not been received, and If notified, it becomes difficult for the media player to properly interpret the command from the remote control. Therefore, in such a case, a command indicating the end of the instruction to change the playback state of the media player that is paired with the previously received remote control command is notified to the media player, and then the playback of the media player received later is further performed. A command indicating the start of a state change instruction is notified to the media player. As a result, the start and end of the paired remote control commands can be received by the media player as the higher-level application program, and the situation where the media player cannot interpret the commands from the remote control can be avoided. . Hereinafter, a media player control process using this method will be described.

  With reference to the flowchart of FIG. 4, the media player control processing in the mobile phone 1 of FIG. 2 will be described. Note that the processing in steps S11 to S15 and step S18 in FIG. 4 is the same as the processing in steps S1 to S6 in FIG.

  When it is determined in step S15 that a new remote control command has been received from the headset 2, the remote control command notification unit 26 starts an instruction to change the playback state of the media player in step S16 according to the analysis result by the remote control command analysis unit 25. Command (for example, “play-press” command) is notified to the media player, and further, a command (for example, “play-press” command) indicating the start of an instruction to change the playback state of the media player is received. It is determined whether or not.

  If it is determined in step S16 that the command indicating the start of the change instruction of the media player is informed to the media player and it is further determined that the command indicating the start of the instruction to change the playback state of the media player is received, In step S17, the command notification unit 26 notifies the media player of a command indicating the end of the instruction to change the playback state of the media player that is paired with the previously received remote control command, and then further receives the media player received later. The media player is notified of a command indicating the start of the playback state change instruction.

  For example, a command (for example, a “play-press” command) indicating the start of a change instruction for the playback state of the media player is notified to the media player, and further, a command (for example, a start instruction for changing the playback state of the media player) When the “play-press” command is received, a command (“play-release” command) indicating the end of the instruction to change the playback state of the media player that is paired with the previously received remote control command is sent to the media player. In addition to the notification, the media player is further notified of a command (play-press "command) indicating the start of the instruction to change the playback state of the media player received later.

  As a result, a command (“play-release” command) indicating the end of the instruction to change the playback state of the media player that is paired with the previously received remote control command (eg, “play-press” command) can be received. This situation can be resolved, and the start and end of a pair of remote control commands (for example, a “play-press” command and a “play-release” command) can be received by the media player. Therefore, the situation where the media player cannot interpret the command from the remote control can be avoided more preferably, and the remote control command can be interpreted appropriately. As a result, it is possible to further improve the usability when the media player is controlled by the remote controller of the opposite device.

  Thereafter, the process proceeds to step S1.

  On the other hand, it is determined that the command indicating the start of the change instruction of the playback state of the media player is notified to the media player in step S16, and further, the command indicating the start of the instruction of changing the playback state of the media player is not received. If so, the process proceeds to step S18, and a normal remote control command notification process is performed in step S18.

  In the media player control process described with reference to the flowchart of FIG. 4, in the process of step S16, a command indicating the start of the instruction to change the playback state of the media player is notified to the media player. If it is determined that a command indicating the start of the player's playback state change instruction has been received, the media player is notified of a command indicating the end of the playback state change instruction of the media player that is paired with the previously received remote control command. In addition, after that, a command indicating the start of the instruction to change the playback state of the media player received later is notified to the media player. However, the present invention is not limited to such a case, and playback of the media player received later is performed. A command indicating the start of the state change instruction is sent to the media player. It may be discarded without.

  The processing in this case is shown in the flowchart of FIG. 5 are the same as steps S11 to S16 and step S18 in FIG. 4, and the description thereof is omitted because it is repeated.

  If it is determined in step S26 that a command indicating the start of the instruction to change the playback state of the media player has been sent to the media player and it is further determined that a command indicating the start of the instruction to change the playback state of the media player has been received, In step S27, the command notification unit 26 discards the command received later, which indicates the start of the instruction to change the playback state of the media player, without notifying the media player. For example, a command (for example, a “play-press” command) indicating the start of a change instruction for the playback state of the media player is notified to the media player, and further, a command (for example, a start instruction for changing the playback state of the media player) When a “play-press” command or “fastforward-press” command is received, a command (play-press command) indicating the start of a media player playback state change instruction received later is sent to the media player. As a result, even if a command indicating the start of the instruction to change the playback state of the media player is repeatedly received, the previously received remote control command is preferentially received by the media player. Can be interpreted and processed, and the media player can properly interpret commands from the remote control. It is possible to avoid a situation where no remote control command can be suitably interpreted. As a result, it is possible to improve the usability in the case of control by the associated apparatus for the remote control of the media player.

  At this time, a command indicating the end of the instruction to change the playback state of the media player that is paired with the previously received remote control command may be notified to the media player, or the headset 2 may notify the remote controller without notification. You may make it wait for reception of a command.

  Note that, as shown in the flowchart of FIG. 6, in a state where a command indicating the start of the change instruction of the playback state of the media player is notified to the media player, a command indicating the start of the instruction of change of the playback state of the media player is further provided. If it is determined that the remote control command is received, in step S37, the remote control command notifying unit 26 determines whether the remote control command received later is a command indicating the start of an instruction to change to the same playback state as the previously received remote control command. Is further determined, and a command (for example, “play-press” command) indicating the start of an instruction to change to the same playback state as the remote control command (for example, “play-press” command) previously received in step S37. If it is determined that the remote control command notification unit 26 has received the remote command later in step S38. Command that indicates the start of a change instruction to a playback state different from the previously received remote control command (eg, “play-press” command) (eg, “fastforward-press” command) If determined, in step S39, the remote control command notifying unit 26 issues a command (for example, a “play-release” command) indicating the end of the instruction to change the playback state of the media player that is paired with the previously received remote control command. In addition to notifying the media player, a command (for example, a “fastforward-press” command) indicating the start of a media player playback state change instruction received later may be further notified to the media player.

  As a result, when a command indicating the start of the instruction to change the playback state of the media player is repeatedly received, if the command is to change to the same playback state, the previously received remote control command is preferentially given to the media player. The remote control commands can be sequentially interpreted and processed by the media player when the instruction is to change to a different playback state, and the media player can appropriately interpret the commands from the remote control. It is possible to avoid the situation where it is impossible to interpret the remote control command more suitably. As a result, it is possible to further improve the usability when the media player is controlled by the remote controller of the opposite device.

  In the embodiment of the present invention, the music player is explicitly described as the media player. However, the present invention is not limited to such a case, and can be applied to other media players.

  The present invention can be applied to a PDA (Personal Digital Assistant), a personal computer, a portable game machine, a portable music player, a portable video player, and other information processing apparatuses in addition to the cellular phone 1. Can do.

  The series of processes described in the embodiments of the present invention can be executed by software, but can also be executed by hardware.

  Furthermore, in the embodiment of the present invention, the steps of the flowchart show an example of processing performed in time series in the order described, but parallel or individual execution is not necessarily performed in time series. The processing to be performed is also included.

1 is a diagram showing a schematic configuration of an information exchange system according to the present invention. 1 is a block diagram showing an internal configuration of a mobile phone applicable to an information processing apparatus according to the present invention. The flowchart explaining the media player control process in the mobile telephone of FIG. The flowchart explaining the other media player control processing in the mobile telephone of FIG. The flowchart explaining the other media player control processing in the mobile telephone of FIG. The flowchart explaining the other media player control processing in the mobile telephone of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Mobile phone, 2 ... Headset, 3 ... Remote control, 11 ... Control part, 12 ... Display part, 13 ... Input part, 14 ... Memory | storage part, 15 ... Radio telephone communication part, 16 ... Signal processing part, 17 ... PCM Codec, 18 ... Microphone, 19 ... Speaker, 20 ... Media player control unit, 21 ... Content processing unit, 22 ... Short-range wireless communication unit, 23 ... Bus, 24 ... Remote control command transmission / reception unit, 25 ... Remote control command analysis unit, 26 ... remote control command notification unit, 27 ... media packet transmission unit.

Claims (6)

Receiving means for receiving, via wireless communication, a remote control command for instructing a change in the playback state of a predetermined application program transmitted by the opposite device;
Analyzing means for analyzing the remote control command received by the receiving means;
Notification means for notifying the predetermined application program of the received remote control command,
The notification means starts a playback state change instruction when a situation in which the remote control command cannot be received after notifying the remote control command indicating the start of the playback state change instruction to a predetermined application program. An information processing apparatus that notifies a predetermined application program of the remote control command that indicates the end of a playback state change instruction that is paired with the remote control command that is indicated.   The notification means, when notifying the predetermined application program of the remote control command indicating the start of the reproduction state change instruction and further receiving the remote control command indicating the start of the reproduction state change instruction, Notifying the predetermined application program of the remote control command indicating the end of the playback state change instruction, which is paired with the remote control command indicating the start of the playback state change instruction notified to the application program, and the playback received later The information processing apparatus according to claim 1, wherein the remote control command indicating the start of a state change instruction is notified to the predetermined application program.   The notifying means receives the remote control command indicating the start of the playback state change instruction to the predetermined application program, and then receives the remote control command indicating the start of the playback state change instruction, and then received the remote control command. The information processing apparatus according to claim 1, wherein the remote control command indicating the start of a reproduction state change instruction is discarded.   The notifying means receives the remote control command indicating the start of the playback state change instruction to the predetermined application program, and then receives the remote control command indicating the start of the playback state change instruction, and then received the remote control command. When the playback state in which the start of the change instruction is indicated by the remote control command and the playback state in which the start of the change instruction is indicated by the previously received remote control command are the same, the playback state change instruction received later is The information processing apparatus according to claim 1, wherein the remote control command indicating start is discarded.   The notifying means receives the remote control command indicating the start of the playback state change instruction to the predetermined application program, and then receives the remote control command indicating the start of the playback state change instruction, and then received the remote control command. When the playback state in which the start of the change instruction is indicated by the remote control command and the playback state in which the start of the change instruction is indicated by the previously received remote control command are different, the start of the change instruction of the previously received playback state is started The remote control command indicating the end of the playback state change instruction is notified to the predetermined application program, and the remote control command indicating the start of the playback state change instruction received later is received. Notifying the predetermined application program The information processing apparatus according to claim 1.   The information processing apparatus according to claim 1, wherein the situation in which the remote control command cannot be received includes a situation in which a link loss has occurred.

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