JP2007073157A - Device and method for reproducing medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To immediately execute processing based on an operation even in a sleep state when a device for reproducing a medium is operated for control. <P>SOLUTION: The device for reproducing a medium by an operation from an external device inputs a potential signal from the external device to shift a control means of a suspend state to a driven state, detects the potential of the potential signal input from the external device, compares the potential of a storage means prestoring contents of medium reproduction control with the potential of the potential signal, and executes reproduction control of a medium to be reproduced based on the comparison result of the comparison means. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a media playback device and a media playback method, and more particularly, to a media playback device and a media playback method for controlling playback of audio data and the like based on a signal from a device remotely operated from the outside.

  2. Description of the Related Art Conventionally, a playback apparatus that can perform multimedia playback control of an audio player, a video player, or the like remotely using a remote controller (hereinafter simply referred to as “remote controller”) or the like is known. PCs (Personal Computers) have been developed as audio players and video players and can be operated with a remote control. Recently, however, even mobile communication terminals such as mobile phones and PHSs (Personal Handyphone Systems) have been developed. , Which can play back audio data such as music via earphones or built-in speakers, etc. has been developed, and can be played, stopped, next or previous music by operating a remote control provided in the middle of the earphone cable. Control such as jumping to can be performed.

  In such a playback apparatus, it is known from the viewpoint of device maintenance and power saving that the control unit temporarily enters a sleep state, that is, a sleep state when no signal is input for a certain period of time during startup. ing. In a portable communication terminal capable of reproducing audio data, a control unit (for example, a microcomputer) has a unit of audio data (for example, 1 when the audio data is music data) stored in advance in a built-in memory. Audio data per song) is read out, and the audio data per song is output to the media playback device, and then the control unit shifts to the sleep state during playback of the audio data. In portable communication terminals that must be reduced in size, weight, and multifunction, power saving by sleep is particularly important due to battery capacity.

To cancel sleep, the function of detecting a signal for canceling sleep provided in the control unit of the playback device operates various physical keys (for example, dial keys provided on a PC keyboard or a mobile communication terminal). The potential change caused by the above is detected, and power is supplied again to the entire control unit to start up. The start-up control can be performed not only by a physical key provided on the playback apparatus main body but also triggered by a potential change caused by key operation of the remote controller (for example, operation keys such as playback and stop for a mobile communication terminal) ). As such a technique, Patent Document 1 discloses a technique relating to an electronic device such as a video cassette recorder, and cancels the sleep state of the control unit based on an input signal from an operation key of the electronic device body or a key of a remote control. Techniques to do this are disclosed.
JP 09-191279 A (Patent No. 3449112)

  However, in general, operation of the remote controller is provided with operation keys for each function such as playback and stop, and playback is performed by performing a predetermined operation (for example, pressing once) on a key assigned to a process desired by the user. Device control processing is performed. For this reason, for example, if the control unit is in the sleep state when operating the jump switch of the remote control while a specific song is being played, the jump switch instruction signal is merely regarded as a potential change, and control is performed. Only the start-up of the unit, that is, the cancellation of the sleep is executed. In order to execute the jump, there is a problem that the remote controller must be operated again from the state where sleep is canceled.

  In particular, a remote controller such as a portable communication terminal generally shares a cable such as an earphone for the convenience of handling, and there is a situation that a control signal line by the remote controller is limited. In recent years, mobile communication terminals tend to be multi-functional, and it is convenient if a large number of functions can be operated by a remote controller. However, it is not preferable to increase the number of control signal lines of the remote controller due to such circumstances. Also, it is not preferable to increase the number of control signal lines from the request for power saving accompanying the increase in functionality.

  An object of the present invention is to immediately perform processing based on an operation even when in a sleep state when performing a control operation of a media playback device.

In order to solve the above-mentioned problem, the invention described in claim 1
A media playback device that operates when operated from an external device,
Storage means for storing the content of media playback control in association with the potential of the potential signal input from the external device;
Control means for entering a driving state when the potential signal is input, and entering a resting state after a predetermined time;
Detecting means for detecting that a potential signal is input from the external device;
When an input of a potential signal is detected by the detection means while the control means is in a pause state, the control means shifts from the pause state to the drive state and is stored in the input potential signal and the storage means. A comparison means for comparing the measured potential with
Based on the result of the comparison by the comparison means, reproduction control means for performing reproduction control of the reproduced media;
It is characterized by providing.

The invention described in claim 2 is the media playback apparatus according to claim 1,
A wireless communication means;
When the wireless communication unit detects an incoming call, the control unit stops reproduction of the media by the media reproduction unit, and transmits an incoming signal indicating the incoming call to the external device.

According to a third aspect of the present invention, in the media playback device according to the second aspect,
The external device further comprises output means for outputting a potential signal for operating the wireless communication means,
When the potential signal output by the output means is detected, the control means shifts from the sleep state to the operating state, and subsequently detects the potential signal for performing playback control of the reproduced media. The wireless communication means is controlled based on the potential signal.

The invention according to claim 4 is a media playback method for playing back media by an operation from an external device,
A step of inputting a potential signal from the external device to shift the control means in a dormant state to a driving state;
Detecting a potential of a potential signal input from the external device;
Comparing the potential of the potential signal with the potential of the storage means that stores the content of media playback control in association with the potential of the potential signal;
And a step of performing playback control of media to be played back based on the result of the comparison by the comparison means.

According to invention of Claim 1 or 4,
By detecting the potential difference of the potential signal input from the external device, it is possible to compare with the potential of the storage means that stores the content of the media playback control in association with this potential difference. For this reason, the control means that has been in a dormant state can be brought into a driving state by the input potential signal of 1, and media reproduction can be controlled.

According to the invention of claim 2, in addition to the effect of the media playback device of claim 1,
The presence of an incoming call can be detected by an external device.

According to the invention of claim 3, in the media playback device of claim 2,
By further providing output means for outputting a potential signal for operating the wireless communication means to the external device, the control means can be shifted from the sleep state to the drive state also by the potential signal output from the output means. Furthermore, if a potential signal for performing media playback control is detected following this potential signal, the wireless communication means can be controlled based on this potential signal.

[First Embodiment]
Next, the best mode for carrying out the present invention will be described with reference to the drawings. In the first embodiment, a mobile phone having a function for reproducing audio data of music (songs, etc.) is applied as a media playback device. First, FIG. 1 shows an appearance of a mobile phone 1 to which the present invention is applied. The mobile phone 1 is a so-called foldable mobile phone in which one end of the main body 2 and the lid 3 is rotatably connected by a hinge 4. 1A to 1C show the front, left side, and back of the mobile phone 1 when the main body 2 and the lid 3 are unfolded and the surface unfolded from the inside is the front.

As shown in FIG. 1 (a), on the front surface of the mobile phone 1, numbers "0-9" and "*" and "#" used for inputting a telephone number and the like on the main unit 2 and electronic Dial key 5 with hiragana, alphabets and symbols used for character input when creating e-mails, address books, etc. Clear key 6 for correcting entered numbers, characters and symbols, on-hook key 8, off-hook key 7. A camera key 9 for instructing activation of the electronic camera, a mail key 10 for instructing activation start of the electronic mail function, an address book key 11 for instructing activation start of the address book function, and displayed on a main display unit 18 which will be described later. An input unit 15 is provided which includes an operation key group such as a cursor key 12 for operating the cursor and a determination key 13 for instructing determination of various inputs and processes. A transmitter 16 is provided at a position facing the hinge 4 on the plane on which the input unit 15 is provided.
The lid 3 is provided with a main display 18 on which various images and videos are displayed, and a receiver 17 is provided at a position facing the hinge 4 on the surface where the main display 18 is provided.

  In FIG. 1B, on the left side of the main body 2, a control signal for a remote controller 59, a sound signal output to the earphones 60L and 60R, and a sound signal input from the microphone 84 are input. A data communication terminal 22 connected to the connector jack 20, a charging terminal 21 a connected to the power supply terminal from the charger, and a data communication terminal connected when performing data communication with an external device is provided. FIG. 1B shows a state in which the protective cover for protecting the remote control / earphone connector jack 20, the charging terminal 21 a and the data communication terminal 22 is closed.

  In FIG. 1C, the lid 3 has a sub display unit 19 for displaying a time display, a transmission destination at the time of incoming call, and the like, and a camera lens 24 of an imaging unit 35 having a function as a digital camera by a photoelectric conversion function. Is provided. The main body 2 has a rechargeable battery 23 (a state covered with a battery cover in FIG. 1C) as a power source and a power terminal on the cradle side when charging is performed using a cradle (not shown). Charging base terminal 21b is provided.

  Next, the functional configuration of the mobile phone will be described. FIG. 2 a shows a block diagram showing the functional configuration of the mobile phone 1. The cellular phone 1 includes a control unit 30, a system ROM (Read Only Memory) 31, a program ROM 32, a data storage RAM (Random Access Memory) 33, an external interface controller 34, an address / data bus processing unit 36, an imaging unit 35, an address The data bus processing unit 36, the flash memory 37, the communication control unit 43, the display unit 50, the comparator 55, a sound source LSI (Large Scale Integration) 56, an AMP (Amplifier) 57, and a remote control / earphone connector plug 70. The remote control / earphone connector plug 70 is detachably connected to a remote control 59 that allows a user to play or jump to a song or perform a call function on / off hook operation during voice playback. The remote control 59 is provided with a jack capable of outputting an audio signal so that the earphones 60R and 60L can be detachably connected.

  The control unit 30 includes a CPU, a microcomputer, and the like. Based on the operation program stored in the system ROM 31 and application programs used for various processes, the mobile phone 1 is controlled overall. At the time of processing, processing is performed according to an instruction signal transmitted by a user operation from the remote control 59 or the input unit 15 based on these programs. Specifically, the voice playback function will be described as an example. When an instruction signal for playback of voice data transmitted from the remote controller 59 is detected, a media playback application program is read from the program ROM 32, and the flash memory 37 as a work area is read. To start the audio playback process. In other words, the data storage RAM 33 is accessed, and audio data per unit (for example, one song) stored in advance is read out and transmitted to the sound source LSI 56 to control reproduction of the audio data. When the communication unit 40 detects an incoming radio wave during the reproduction of the sound and the control unit 30 detects a signal indicating the presence of the incoming call, the call process is started according to the call program. In other words, an interrupt signal is transmitted to the sound source LSI 56, and the reproduction process of the audio data is interrupted and a ringing tone is generated. When the user operates an off-hook key 7 or an on / off-hook switch 80 (see FIG. 4) provided on the remote controller 59 and detects an off-hook signal, the audio interface 44 transmits a reception signal to the receiver 17 or the earphones 60R and 60L. Or a transmission signal input from the transmitter 16 or the microphone 84 is performed.

  Further, in the sound reproduction function, the control unit 30 enters a sleep state after reading out sound data per unit (for example, one tune) from the data storage RAM 33 and sending it to the sound source LSI. That is, in order to save power, during playback of audio data after transmission of audio data, processing other than waiting for an incoming signal from the communication unit 40, clock function, temporary storage of processing data, etc. is interrupted, and power consumption Limit. The sleep is canceled by detection of a signal from the input unit 15 or the remote controller 59, detection of an incoming signal, and an instruction to read out audio data of the next song by an instruction from the media playback application program.

  The flash memory 37 is a readable / writable nonvolatile memory, and is a memory area for temporarily storing various programs executed by the control unit 30 and data related to the execution of these programs. In addition, as described above, it is a work area for developing various programs.

  The system ROM 31 is configured by a nonvolatile memory or the like. An operation program, various initial settings, an initialization (IPL) program for loading a program necessary for hardware inspection, and various initial setting values related to the program are stored.

  The program ROM 32 is configured by a NOR (NOT OR) Flash memory, and stores application programs necessary for the operation of the mobile phone 1 and data related to the execution of the programs. In this embodiment, as shown in FIG. 2b, an input signal management table 38 indicating various processes corresponding to a plurality of types of remote control signals output from an audio data reproduction application program or a remote control 59 described later is stored. The

The data storage RAM 33 is composed of a nonvolatile memory or the like. In addition to storing audio data indicating music (songs) output from the built-in speaker 61 or the earphones 60L and 60R, data related to the communication of the mobile phone 1 such as address book data and mail data, and the like are taken by the imaging unit 35 It stores multimedia data including still images and moving images.
The audio data is acquired by the control unit 30 downloading from an external server via the communication unit 40 according to the application program. The acquired audio data is stored in a data format based on the standard of the sound source LSI 56 and stored as compressed data. The audio data may be acquired from an external electronic device (for example, a PC) having a common data format via the data communication terminal 22.

  The address / data bus processing unit 36 performs address control between the control unit 30 and the communication unit 40, control of data communication on the bus, and the like.

  Based on the instruction signal input from the control unit 30, the communication unit 40 performs a voice call and communication of various data with a radio base station on a radio communication network (including a radio telephone network) via the antenna 42. It is a functional part to perform. The communication unit 40 includes an antenna 42 such as a coil antenna, a radio unit 41 having a transmission function and a reception function, and a communication control unit 43 having a communication data processing unit 45 and an audio interface 44.

  The communication data processing unit 45 includes a CELP (Code-Excited Linear Prediction) vocoder, a speech decoding processing circuit, a packet data generation circuit, and the like. During reception, the reception data generated by the wireless unit 41 is decoded, and during transmission, transmission data output from the audio interface 44 and various data output from the control unit 30 are encoded to generate transmission data. The audio interface 44 outputs a voice based on the reception data included in the reception data decoded by the communication data processing unit 45 from the reception unit 17 or a user's voice input from the transmission unit 16 as a digital signal. Convert to sent data.

  In addition, as a modulation / demodulation method of a radio signal transmitted and received between the communication unit 40 and the radio base station, a PSK (Phase Shift Keying) method, a PDC (Personal Digital Cellular) method, a CDMA (Code Division Multiple Access) method, a GSM (Global) Any of various known techniques such as a System for Mobile communication) may be used.

The wireless unit 41 modulates the transmission data generated by the communication data processing unit 45 into a carrier wave during transmission and outputs the radio wave from the antenna 14. At the time of reception, radio waves (reception signals) received via the antenna 14 are demodulated to generate reception data and output to the communication data processing unit 45.
Further, the wireless unit 41 has a transmission detection function, and outputs a transmission detection signal indicating that transmission is performed to the control unit 30 when performing a radio wave output operation (transmission operation). The transmission detection function of the wireless unit 41 may be realized by the control unit 30 as software.

  The input unit 15 includes various keys (see FIG. 1A) such as a dial key 5, an on-hook key 8, and an off-hook key 7, and is an input device that inputs an instruction for starting execution of application software and various information. is there. A pressing signal generated by a user operation is output to the control unit 30.

The media processing unit 63 includes a sound source LSI 56 and an AMP (Amplifier) 57, and outputs audio to the built-in speaker 61 or the earphones 60L and 60R based on audio data input from the control unit 30. Specifically, the control unit 30 reads out audio data stored in the data storage RAM 33 in a predetermined data format, and outputs it to the sound source LSI 56. The sound source LSI 56 is applied with a sound source format such as an FM sound source or a PCN sound source, for example, generates a sine wave based on input audio data, generates a modulated wave by performing frequency modulation between these signals, and generates various kinds of modulated waves. An audio signal indicating the tone of the sound is generated. The modulated audio signal is input to the AMP 57 and amplified, and transmitted to the built-in speaker 61 or the earphones 60L and 60R to output the audio.
The audio data stored in the data storage RAM 33 includes not only music (song) data but also ringtones for incoming calls, operation sound data for operating the input unit 15, and sound effect data for operating various functions. included.

  The comparator 55 receives an input of a remote control signal generated by operating various operation keys of the remote controller 59, and outputs a microcomputer control signal indicating release of the sleep state to the control unit 30 when a predetermined threshold is exceeded. It is. Details will be described later.

  The decoder 62 includes an A / D (Analog / Digital) converter or the like. The analog microcomputer control signal output from the comparator 55 is converted into a digital signal based on the data communication standard of the mobile phone 1 and output to the control unit 30. Note that the decoder 62 may be configured to perform software processing in the control unit 30.

  The display unit 50 includes a display driver 51, a main display unit 18, and a sub display unit 19. The display driver 51 performs rasterization of the received image data and moving image data in accordance with a display instruction signal from the control unit 30, and sends the image signal to the main display unit 18 and the sub display unit 19 to perform image display control. Do.

  The main display unit 18 and the sub display unit 19 are configured by an LCD (Liquid Crystal Display), an ELD (Electro Luminescence Display), or the like. It is a monitor that displays various information of the mobile phone 1. When the control unit 30 detects that the mobile phone 1 is in the lid closed state, for example, from the rotation angle of the hinge 4, the control unit 30 turns off the display on the main display unit 18 and switches the display to the sub display unit 19. On the contrary, the display is switched to the main display unit 18.

  The external interface controller 34 controls, for example, the data communication terminal 22 of the 18-core connector and an external interface that performs data communication with an external device. The rechargeable battery 23 supplies power to each functional unit based on an instruction from the control unit 30 using the power stored via the charging terminal 21 a and the charging stand terminal 21 b.

  The imaging unit 35 includes an imaging module such as a CMOS (Complementary Metal Oxide Semiconductor) sensor or a CCD (Charge Coupled Device) sensor, and photoelectrically converts light captured through the camera lens 24 (see FIG. 1C). Generate. The generated electrical signal is subjected to D / A (Digital / Analog) conversion and subjected to various digital signal processing such as encoding and compression of digital signals and image processing by a data processing integrated circuit such as DSP (Digital Signal Processor). Is performed, and is transmitted to and stored in the data storage RAM 33 as electronic image data in a format corresponding to the standard applied to the mobile phone 1.

  Next, the remote controller 59 and the earphones 60L and 60R connected to the mobile phone 1 will be described with reference to FIGS. 3, 4, 5 and 6. FIG. As shown in FIG. 3, the remote controller 59 and the earphones 60L and 60R used in the present embodiment are configured to share a cable 71. Further, by connecting the remote / earphone connector plug 70 to the remote / earphone connector jack 20 of the mobile phone 1, power is supplied to the remote 59. An earphone jack 72 is provided at an end of the remote control 59 that faces the portion connected to the cable 71, and an audio signal is transmitted to the earphones 60 </ b> L and 60 </ b> R by inserting and connecting an earphone plug 73.

  FIG. 4 shows an external configuration of the remote controller 59. FIG. 4A is a schematic diagram showing the front of the remote controller 59 when the surface to which the cable 71 is connected is the bottom surface and the surface to which the earphone jack 72 is provided is the top surface. On the front side, an on / off hook switch 80, a playback / pause switch 81, a return jump switch 82, a feed jump switch 83, and a microphone 84 are provided. Each of these switches is constituted by a tact switch or the like, and outputs an instruction signal when pressed. The mobile phone 1 performs various processes based on instruction signals output from these switches.

  The on / off hook switch 80 has a function corresponding to the off hook key 7 and the on hook key 8. It is a switch that outputs a signal instructing control to enable a call using the microphone 84 and the earphones 60L and 60R when pressed once when an incoming call is received. In addition, when the incoming call is not received, a signal indicating that the mobile phone 1 is off-hook is output by pressing once.

  The playback / pause switch 81, the return jump switch 82, and the feed jump switch 83 are switches used when the music playback function of the mobile phone 1 is activated. The playback / pause switch 81 instructs to start playing music and outputs a pause instruction signal when pressed once during music playback. When the music is in a paused state, an instruction signal for restarting reproduction is output by pressing again. The return jump switch 82 and the feed jump switch 83 each output a signal for instructing a return jump or a feed jump of music to be played each time the button is pressed once.

  FIG. 4B is a schematic diagram showing the right side surface of the remote control 59 shown in FIG. On the right side, a volume up switch 85a and a volume down switch 85b for outputting a signal for instructing volume adjustment of the sound output from the earphones 60R and 60L are provided. Each time the switch is pressed, the volume of the sound output from the earphones 60L and 60R can be gradually increased or decreased.

FIG. 4C is a schematic diagram showing the left side of the remote control 59 shown in FIG. A hold switch 86 is provided on the left side surface. By turning on the hold switch 86, the output of each instruction signal can be limited even if the above-described switches are operated.
As shown in FIGS. 4B and 4C, a clip 87 is provided on the back surface of the remote control 59 to hold the remote control in a pocket of the user's clothes.

  FIG. 5 is a perspective view showing a schematic configuration of a remote / earphone connector plug 70 for connecting the remote control 59 and the like to the mobile phone 1. The remote control / earphone connector plug 70 is constituted by a flat 8-pin connector plug, and is provided with eight contact terminals P1, P2, P3, P4, P5, P6, P7 and P8. The remote control / earphone connector jack 20 is provided with eight contact terminals to be connected to the respective contact terminals, and the remote control / earphone connector plug 70 and the remote control / earphone connector jack 20 are connected. As a result, the cellular phone 1, the remote controller 59, and the earphones 60L and 60R become conductive.

  FIG. 6 shows a circuit configuration representing a connection relationship among the remote controller / earphone connector plug 70, the comparator 55, the control unit 30, the remote controller 59, and the earphones 60L and 60R. For the sake of simplicity, the remote / earphone connector jack 58 is not shown, and a functional unit to which a connection terminal other than the contact terminal P2 is connected (see FIG. 2) is omitted.

The contact terminal P1 is connected to an on / off hook switch 80, and is connected to the control unit 30 via a bus.
The contact terminal P2 is connected to the reproduction / pause switch 81, the return jump switch 82, the feed jump switch 83, the volume up switch 85a, and the volume down switch 85b. This is a control line for outputting a remote control signal for instructing various processes to the mobile phone 1. This control line is configured by connecting the switches in parallel. Resistors R1, R2, R3 and R4 are provided on the output side of each of the switches connected in parallel. That is, the number of resistors is different in a circuit that is turned on by closing any one of the switches. Specifically, the resistor R1 is provided in the closed circuit formed by closing the return jump switch 82, the resistors R1 and R2 are provided in the closed circuit formed by closing the feed jump switch 83, and the volume up switch 85a is provided. Resistors R1, R2, and R3 are provided in the closed circuit formed by closing, and resistors R1, R2, R3, and R4 are provided in the closed circuit formed by closing the volume down switch 85b. As the resistors R1 to R4, resistors having the same resistance value are used. That is, when any switch of the parallel circuit is closed by a user operation and becomes conductive, the voltage of the entire circuit before the switch is closed changes according to the number of resistors. This is because the control unit 30 detects this voltage change and specifies the type of processing indicated by the signal.

  Electric power is supplied from the contact terminals P3 and P6. The contact terminal P4 is connected to the earphone 60R, and the contact terminal P5 is connected to the earphone 60L, and is connected to the AMP 57 and the sound source LSI 56 on the mobile phone 1 side. The contact terminal P7 is connected to the microphone 84. The contact terminal P8 is ground.

Control lines connected from the remote control 59 via the contact terminal P2 to the remote control / earphone connector jack 58 are a control line 90a connected to the comparator 55 inside the mobile phone 1 and a control line 90b connected to the control unit 30. Branch to. The comparator 55 as a comparator compares the circuit voltage before any switch is closed with the circuit voltage after the switch is closed, and outputs a microcomputer control signal to the control unit 30 when there is a change in potential. .
The control line 90 b is directly connected to the control unit 30 via the bus, and inputs an analog signal from the remote control 59 to the control unit 30.

  The control unit 30 receives the microcomputer control signal output from the comparator 55, recognizes that the comparator 55 has output a signal indicating a change in the potential of the circuit, and performs control to cancel the sleep state.

  Further, the control unit 30 receives an input of the remote control signal output from the control line 90b and decoded by the decoder 62, refers to the input signal management table 38 stored in advance in the program ROM 32, and compares it with the value indicated by the decoded signal. Then, it is determined which type of control instruction is the signal.

  This will be specifically described with reference to a timing chart shown in FIG. In FIG. 7, H1 is a remote control signal output to the control unit 30 via the control line 90b, H2 is a microcomputer control signal output from the control line 90a to the control unit 30 via the comparator 55, and H3 is the control unit 30. An instruction signal indicating an instruction to start the sleep release process, and H4 indicates an instruction signal indicating an instruction to start various processes such as reproduction and pause corresponding to the remote control signal. The horizontal axis represents time (T), and the vertical axis represents signal voltage (V). Moreover, in H1, since the signal of a different voltage is output for every switch, the height of a waveform differs.

  At time t1, when the control unit 30 is in the sleep state and the decoder 62 is in the operating state, when the reproduction / pause switch 81 is closed in H1, the remote control signal 100a (voltage value V11) having the highest voltage is controlled. Is output to the unit 30. At the same time, the microcomputer control signal C2 (voltage value V2) is also output from the comparator 55 to the control unit 30 at H2. When the microcomputer control signal C2 is input, the control unit 30 starts processing to output a control signal C3 for canceling the sleep state as indicated by H3. After the sleep release is completed, the control unit 30 reads the remote control signal C41 corresponding to the signal voltage (voltage value V11) of H1 from the input signal management table 38 shown in FIG. The control for performing the playback / pause processing of the video is started.

  At time t2, when the control unit 30 is in the sleep state and the decoder 62 is in the operating state, if the return jump switch 82 is closed in H1, the second highest remote control signal 100b (voltage value V12) is controlled. Is output to the unit 30. At the same time, the microcomputer control signal C2 (voltage value V2) is also output from the comparator 55 to the control unit 30 at H2. When the microcomputer control signal C2 is input, the control unit 30 starts processing to output a control signal C3 for canceling the sleep state as indicated by H3. Then, after the release of sleep is completed, the control unit 30 reads the remote control signal C42 corresponding to the signal voltage (voltage value V12) of H1 from the input signal management table 38 shown in FIG. Control for reproducing audio data from the head of the track before the current track, that is, a return jump is started.

Further, at time t3, when the control unit 30 is in the sleep state and the decoder 62 is in the operating state, if the feed jump switch 83 is closed in H1, the third highest remote control signal 100c (voltage value V13) is controlled. Is output to the unit 30. At the same time, the microcomputer control signal C2 (voltage value V2) is also output from the comparator 55 to the control unit 30 at H2. When the microcomputer control signal C2 is input, the control unit 30 starts processing to output a control signal C3 for canceling the sleep state as indicated by H3. After the release of sleep, the control unit 30 reads the remote control signal C43 corresponding to the signal voltage of H1 (voltage value V13) from the input signal management table 38 shown in FIG. Control for reproducing audio data from the head of the next track after the current track, that is, a feed jump is started.

Furthermore, at time t4, when the control unit 30 is in the sleep state and the decoder 62 is in the operating state, if the feed volume up switch 85a is closed in H1, the fourth highest remote control signal 100d (voltage value V14). Is output to the control unit 30. At the same time, the microcomputer control signal C2 (voltage value V2) is also output from the comparator 55 to the control unit 30 at H2. When the microcomputer control signal C2 is input, the control unit 30 starts processing to output a control signal C3 for canceling the sleep state as indicated by H3. After the release of sleep, the control unit 30 reads the remote control signal C44 corresponding to the H1 signal voltage (voltage value V14) from the input signal management table 38 shown in FIG. The control for increasing the volume of the audio data being read, that is, the volume up is started.

At time t5, when the control unit 30 is in the sleep state and the decoder 62 is in the operating state, if the feed volume down switch 85b is closed in H1, the fifth highest remote control signal 100e (voltage value V15) is generated. It is output to the control unit 30. At the same time, the microcomputer control signal C2 (voltage value V2) is also output from the comparator 55 to the control unit 30 at H2. When the microcomputer control signal C2 is input, the control unit 30 starts processing to output a control signal C3 for canceling the sleep state as indicated by H3. After the release of sleep, the control unit 30 reads the remote control signal C45 corresponding to the H1 signal voltage (voltage value V15) from the input signal management table 38 shown in FIG. The control for decreasing the volume of the audio data, that is, the volume down is started.

  As described above, according to the mobile phone 1 to which the present invention is applied, it is possible to perform the processing corresponding to the sleep release of the control unit 30 and the remote control signal only by performing a predetermined remote control operation. For this reason, there is an effect that the sound reproduction function can be operated without changing the operation method itself of the remote controller 59 while maintaining the power saving effect by the sleep of the control unit 30.

In particular, it is preferable that the processing load applied to the microcomputer and CPU of the control unit be reduced as much as possible in the cellular phone due to problems such as reception waiting for call radio waves and communication radio waves and base station switching processing required for handover. Furthermore, due to the problem of the capacity of the rechargeable battery and the problem of reducing the size and weight of the device itself, it is difficult to mount a microcomputer chip having a higher processing capacity and speed in terms of cost and technology development. As a result, in general, a mobile phone having multiple functions has a situation in which the sleep state is performed at relatively fast intervals. In this regard, when the present invention is applied to a mobile phone, the operability of various functions can be improved while maintaining the basic configuration of the current mobile phone.
Further, since the operability and functionality are remarkably improved without increasing the number of control lines of the remote controller itself, there is a specific effect that the portability of the mobile phone is further improved.

[Second Embodiment]
Next, a second embodiment to which the present invention is applied will be described. In the following description, components having the same functions as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

In the first embodiment, the potential of the remote control signal from the remote control 59 is detected, and the control unit is controlled by one control signal by referring to the input signal management table 38 in which a control instruction is stored corresponding to this potential. 30 sleep release (startup) and playback of audio data, pause, return jump, feed jump, and the like can be controlled.
In the mobile phone according to the second embodiment, the return jump switch 82 and the feed jump switch 83 of the remote control 59 can be used for instructions when controlling other functions other than the audio data reproduction control instruction application. It is a telephone.

  In the second embodiment, the configuration different from that of the mobile phone 1 of the first embodiment is in a state of waiting for an incoming call from the outside during reproduction of audio data or without any application function being activated on the mobile phone 1. When the control signal is output from the on / off hook key 80 of the remote control 59 by the user's operation, the control unit 30 switches the remote control control signal acquired through the remote control line 90b as the call function control signal.

  Specifically, when the control signal of the on / off hook key 80 is input, the control unit 30 in the sleep state cancels the sleep state and enters the call waiting state, and the address book data stored in the data storage RAM 33 And the address book is displayed on the main display unit 18. At this time, the earphone 60 </ b> L and / or 60 </ b> R is in a state in which a call waiting sound “Pooh” is output.

  When the address book data is called by operating the keys of the input unit 15 provided in the main body 2 of the mobile phone 1 without using the remote controller 59, the address book key 11 is pressed to obtain the address book data as shown in FIG. A simple address book screen is displayed on the main display unit 18. By operating the cursor key 12, the cursor 102 on the screen is moved up and down, and the name display 101 of the person who desires to make a call is selected from the screen. Each name display 101 is associated with a telephone number on a table stored in the data storage RAM 33 (see FIG. 2), and the mobile phone of the person selected on the list by operating the off-hook key 7 by the user. The outgoing call process is automatically started.

In the remote controller 59, the feed jump switch 83 corresponds to the upper button of the cursor key 12, and the return jump switch 82 corresponds to the lower button of the cursor key 12. In other words, in the input signal management table 38 stored in the system ROM 31, the potential of the remote control signal output by closing the feed jump switch 83 is the upper button of the cursor key 12 when the call function is activated. Data corresponding to the operation signal is stored. Similarly, data corresponding to the operation signal of the lower button of the cursor key 12 is stored for the potential of the return jump switch 82.
When the control unit 30 detects an output signal from the on / off hook switch 80 during reproduction of voice data or standby for an incoming signal, the control unit 30 uses the reference data in the input signal management table 38 as the operation signal for the upper and lower buttons of the cursor key 12. And flag processing for switching to the corresponding data. As a result, the control unit 30 returns to the standby state (while displaying the address book data), and when a potential signal is input from the jump switch 83 or the feed jump switch 82, the main display unit 18 moves up or down. Will be controlled.

  When the user moves the cursor 102 to the name display 101 of the desired transmission partner and then operates the on / off hook switch 80 again, the control unit 30 refers to the table and wirelessly sets the telephone number corresponding to the name display 101 selected. The data is output to the unit 41 and a call is made.

  As described above, according to the mobile phone of the second embodiment, a control switch for other functions can be obtained by using the potential difference between the potential signals output from the various switches of the remote controller 59. In other words, in a communication terminal such as a mobile phone having multiple functions, there is an effect that the range of operations of various functions using the remote control is remarkably widened while ensuring the small size, light weight and power saving characteristics of the remote control itself.

In the first and second embodiments, the mobile phone 1 having a sound playback function is applied as the media playback device. However, the present invention is not limited to this example.
For example, the present invention can naturally be applied to a media playback device having various sleep functions such as a PC, a DVD (Digital Versatile Disc) player, and a CD (Compact Disc) player having a music or video playback function as the media playback device.

FIG. 1A is a front view showing an outline of a mobile phone in the best mode for carrying out the present invention. FIG.1 (b) is the schematic which showed the left side surface of the mobile telephone shown to Fig.1 (a). FIG. 1C is a schematic diagram showing the back surface of the mobile phone shown in FIG. FIG. 2a is a block diagram showing a functional configuration of the mobile phone shown in FIG. FIG. 2 b shows the stored contents of the input signal management table 38. It is the schematic diagram which showed the aspect which connects the remote control and earphone in the mobile telephone shown in FIG. FIG. 4A is a schematic diagram showing the front surface of the remote controller in the best mode for carrying out the present invention. The surface to which the cable 71 is connected is the bottom surface, and the surface on which the earphone jack 72 is provided. The front is shown with the top face. FIG. 4B is a schematic diagram showing a right side surface of the remote control shown in FIG. FIG. 4C is a schematic diagram showing the left side of the remote control shown in FIG. It is the perspective view which showed the outline | summary of the connector plug for remote controls and earphones provided in the remote control shown in FIG. FIG. 4 is a circuit diagram showing a connection relationship among an earphone, a remote controller, a comparator, and a decoder in the best mode for carrying out the present invention. 3 is a timing chart showing the relationship between signal processing of a mobile phone and a remote controller in the best mode for carrying out the present invention. It is the schematic diagram which showed the example of a display of the address book data displayed on the main display part in the best form for implementing this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cellular phone 2 Main body part 3 Cover part 4 Hinge 5 Dial key 6 Clear key 7 On-hook key 8 Off-hook key 9 Camera key 10 Mail key 11 Address book key 12 Cursor key 13 Enter key 14 Application key 15 Input part 16 Sending part 17 Reception unit 18 Main display unit 19 Sub display unit 20 Remote control / earphone connector 21a Charging terminal 21b Charging stand terminal 22 Data communication terminal 23 Rechargeable battery 24 Camera lens 30 Control unit 31 System ROM
32 Program ROM
33 Data storage RAM
34 External interface controller 35 Imaging unit 36 Address / data bus processing unit 37 Flash memory 38 Input signal management table 40 Communication unit 41 Radio unit 42 Antenna 43 Communication control unit 44 Audio interface 45 Communication data processing unit 50 Display unit 51 Display driver 55 Comparator 56 Audio output unit 57 AMP
58 Remote Control / Earphone Connector 59 Remote Control 60L Earphone 60R Earphone 61 Built-in Speaker 62 Decoder 63 Media Processing Unit 70 Remote Control / Earphone Connector Plug 71 Cable 72 Earphone Jack 73 Earphone Plug 80 On / Off Switch 81 Play / Pause Switch 82 Return Jump Switch 83 Feed jump switch 84 Microphone 85a Volume up switch 85b Volume down switch 86 Hold switch 87 Clips 90a, 90b Control lines 100a, 100b, 100c, 100d, 100e Remote control signal 101 Name display 102 Cursors P1, P2, P3, P4, P5, P6, P7, P8 Contact terminals R1, R2, R3, R4 Resistance

Claims (4)

A media playback device that operates when operated from an external device,
Storage means for storing the content of media playback control in association with the potential of the potential signal input from the external device;
Control means for entering a driving state when the potential signal is input, and entering a resting state after a predetermined time;
Detecting means for detecting that a potential signal is input from the external device;
When an input of a potential signal is detected by the detection means while the control means is in a pause state, the control means shifts from the pause state to the drive state and is stored in the input potential signal and the storage means. A comparison means for comparing the measured potential with
A media playback apparatus comprising: playback control means for controlling playback of media to be played back based on a result of comparison by the comparison means. The media playback device according to claim 1, wherein
A wireless communication means;
When the wireless communication means detects an incoming call, the control means stops media playback by the media playback means and transmits an incoming call signal indicating the incoming call to the external device. . The media playback apparatus according to claim 2, wherein
The external device comprises output means for outputting a potential signal for operating the wireless communication means;
When the potential signal output by the output means is detected, the control means shifts from the sleep state to the operating state, and subsequently detects the potential signal for performing playback control of the reproduced media. A media playback apparatus that controls the wireless communication means based on the potential signal. A media playback method for playing media by an operation from an external device,
A step of inputting a potential signal from the external device to shift the control means in a dormant state to a driving state;
Detecting a potential of a potential signal input from the external device;
Comparing the potential of the potential signal with the potential of the storage means that stores the content of media playback control in association with the potential of the potential signal;
And a step of performing playback control of the media to be played back based on the result of the comparison by the comparison means.

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