JP4335842B2 - Source selection apparatus and source selection method - Google Patents

Description

  The present invention relates to a source selection device and a source selection method.

  Conventionally, source devices that output audio signals include radio broadcast receivers that receive radio broadcasts such as FM and AM, cassette tapes, compact discs (CD), minidiscs (registered trademark) (MD), and the like. There are media playback devices that play back audio data recorded on a recording medium. Then, one of the audio signals obtained from these source devices is selected, and the selected audio signal is supplied to the speaker through an equalizer, an amplifier, and the like, and sound is output from the speaker.

  Thus, when a plurality of source types (for example, FM broadcast, AM broadcast, CD, MD, etc.) are provided by one or a plurality of source devices, a source selection for selecting one source type from the plurality of source types. The device is installed independently or in an electronic device.

  In the case of such a source selection device, a predetermined source device is connected to the source selection device, and the source type by the predetermined source device is indicated by printing on the surface of the housing, and in the vicinity thereof, In many cases, an operation unit operated by a user when selecting a source type is installed.

Therefore, conventionally, in consideration of user convenience, the source type currently selected during audio output is displayed (for example, see Patent Document 1), and the CD as the source type is selected by the CD player. That display an error message when the CD player is in an inactive state (see, for example, Patent Document 2), and those that allow FM broadcast and AM broadcast in radio broadcasts to be selected as separate source types (see, for example, Patent Document 3). ), Which makes it possible to select roadside band broadcasting with a simple operation (see, for example, Patent Document 3), and when a rotary knob is adopted as the operation unit, the rotary knob does not rotate beyond that at the beginning and end of options. A device in which the shape of the operation unit is devised (for example, see Patent Document 4) has been proposed.
JP 2002-209284 A (paragraphs 0035 and 0040, FIGS. 2 to 5 and the like) Utility Model Registration No. 2578545 (Description) Japanese Unexamined Patent Publication No. 3-24822 (FIG. 1, claims, etc.) Japanese Utility Model Publication No. 63-077233 (drawing)

  However, the above-described conventional source selection device has the following problems regarding user convenience.

  In the above-described conventional source selection device, the user can confirm the currently selected source type during audio output, but in the standby state, it is possible to confirm the source type that is initially selected at the time of power-on transition. Have difficulty.

  Further, in the above-described conventional source selection device, it is difficult for the user to confirm the source type to be restored after listening to the roadside band broadcast while listening to the roadside band broadcast.

  In recent years, radio broadcast stations (particularly FM stations) are increasing in various places, and it is difficult for a user to select a channel simply by assigning a source type in units of modulation schemes such as FM broadcast and AM broadcast. . There is a function to preset a plurality of FM broadcast stations to a plurality of groups. Even in such a case, first, after selecting FM as a source type, select a group, and then select a broadcast station in the group. There is a need.

  Further, in the above-described conventional source selection apparatus, an operation unit having a special mechanical structure is adopted to improve the operability when selecting an end option of the listed source types. However, from the viewpoint of apparatus cost, recently, a general-purpose operation unit that can be continuously rotated, such as a rotary encoder that does not have a mechanical locking structure at the end, is often used. When such a general-purpose operation unit that can be rotated continuously is used, the operation unit is not mechanically locked, so that it is difficult to perform an operation when selecting an option of the end. For example, when operating without looking at the operation unit, it becomes impossible to grasp which option is currently selected while rotating.

  The present invention has been made in view of the above problems, and an object of the present invention is to obtain a source selection device and a source selection method that improve user operability.

  That is, the present invention makes it possible to confirm the source type that is initially selected at the time of power-on transition in the standby state, or to allow the user to confirm the source type that is restored after listening to the roadside band broadcasting, etc. The user can easily select a desired station from a large number of broadcasting stations, and even when using a general-purpose operation unit that can be rotated continuously, it is easy to select an end option. It is an object of the present invention to provide a source selection device and a source selection method that can be used.

  In order to solve the above problems, the present invention is configured as follows.

One of the source selection devices according to the present invention is a display means for displaying a plurality of source types by one or a plurality of audio signal output devices, and an audio device incorporating the audio signal output device or the audio signal output device. A state transition means for shifting the operation state between the standby state and the power on state, a storage means for storing source type information indicating the source type selected in the power on state, and a display means in the standby state. Among the plurality of source types, the source type indicated by the source type information stored in the storage means is displayed separately from the source types of the remaining audio signal output devices, and a plurality of sources Select one of the source types, and the operating state transitions from the standby state to the power-on state When the can, and a source type selection means for selecting a source type indicated source type information stored in the storage means.

  In addition to the source selection device, the source selection device according to the present invention may be configured as follows. That is, in this case, one or more of the plurality of audio signal output devices can insert and remove the recording medium, read the audio data stored in the recording medium, and reproduce and output the audio signal from the audio data. It is a playback device. The storage unit stores source type information indicating the source type of the media playback device and source type information indicating the source type selected immediately before the source type. Further, the source type display control means controls the display means by referring to the source type information in the storage means when detecting the ejection of the recording medium when the source type of the media playback device is displayed in the standby state. The display of the source type of the media playback device is stopped, and the source type selected immediately before the source type of the media playback device is displayed.

  In addition to the source selection device, the source selection device according to the present invention may be as follows. In other words, in this case, the source type selection unit switches from the standby state to the power-on state by the state transition unit when the source type information of the media playback device that detected the ejection of the recording medium in the standby state is stored in the storage unit. At the time of migration, based on the source type information stored in the storage means, the source type selected immediately before the source type of the media playback device is selected.

  In addition to the source selection device, the source selection device according to the present invention may be as follows. That is, in that case, the source type display control means specifies whether or not an audio signal can be output for the source types of the plurality of audio signal output devices in the power-on state, and controls the display means to output the audio signal. Among the possible source types, the source type selected by the source type selection means is displayed in the first mode, the remaining source types are displayed in the second mode different from the first mode, and the audio signal is displayed. Does not display source types that cannot be output.

  In addition to the source selection device, the source selection device according to the present invention may be as follows. That is, the source type display control means controls the display means during the auto seek operation of the broadcast receiving apparatus among the plurality of audio signal output apparatuses, and determines the source type to be auto-seeked as the source in the power-on state. The display mode is different from the display mode of the type and the display mode of the source type in the standby state.

One source selection method according to the present invention, one or more of a display means for displaying a plurality of source type by the audio signal output device, an audio device incorporating the audio signal output device or person the audio signal output device and state shift means for shifting between the operating state and the standby state and the power-on state, storage means for storing the source type information indicating a source type selected by the power-on state, a standby state, control the display means to, among the plurality of source types, the source type indicated source type information stored in the storage means, and a source attribute display control means for displaying separately from the source type of the remaining audio signal output device, a plurality Select one of the source types, and the operating state transitions from the standby state to the power-on state When is a source selection 択方method of the source selection device and a source type selection means for selecting a source type indicated by the source type information stored in the storage unit, one of the plurality of audio signal output device or is a media playback device for the recording medium be capable insertion and removal reproduces audio signals from the audio data read the audio data stored in the recording medium output, storage means, media playback Storing the source type information indicating the source type of the device and the source type information indicating the source type selected immediately before the source type; and the source type display control means in the standby state, If the source type is to detect the eject record medium if it is displayed, a source in the storage means Referring to another information, and controls the display means to stop the display of the source type of the media playback device, and a step of displaying the source type that has been selected before one of the source type of the media playback device .

One source selection method according to the present invention, in addition to the source selection methods described above, the source type selection means, stored in the source over the scan type information storage means of the detected media playback apparatus ejecting a recording medium in a standby state When the state transition means shifts from the standby state to the power-on state, it is selected before the source type of the media playback device based on the source type information stored in the storage means. Selecting a source type .

One source selection method according to the present invention, one or more of a display means for displaying a plurality of source type by the audio signal output device, an audio device incorporating the audio signal output device or person the audio signal output device and state shift means for shifting between the operating state and the standby state and the power-on state, storage means for storing the source type information indicating a source type selected by the power-on state, a standby state, control the display means to, among the plurality of source types, the source type indicated source type information stored in the storage means, and a source attribute display control means for displaying separately from the source type of the remaining audio signal output device, a plurality Select one of the source types, and the operating state transitions from the standby state to the power-on state Was the case, a source selection 択方method of the source selection device and a source type selection means for selecting a source type indicated by the source type information stored in the storage means, the source type display control means, the power-on state in identifies whether it is possible to output the audio signal for the source type of the plurality of audio signal output apparatus, and controls the display means, of the output possible source types of audio signals, selected by the source type selection means The source type being displayed in the first mode, the remaining source type being displayed in the second mode different from the first mode, and the source type not being able to output an audio signal from being displayed .

One source selection method according to the present invention, one or more of a display means for displaying a plurality of source type by the audio signal output device, an audio device incorporating the audio signal output device or person the audio signal output device and state shift means for shifting between the operating state and the standby state and the power-on state, storage means for storing the source type information indicating a source type selected by the power-on state, a standby state, control the display means to, among the plurality of source types, the source type indicated source type information stored in the storage means, and a source attribute display control means for displaying separately from the source type of the remaining audio signal output device, a plurality Select one of the source types, and the operating state transitions from the standby state to the power-on state Was the case, a source selection 択方method of the source selection device comprising: a source type selection means for selecting a source type, the indicated source type information stored in the storage means, the source type display control means, a plurality of audio release during auto seek operation of the transceiver device of the signal output device, controls the display unit, the source type to be auto seek, source type in a display mode and a standby state of the source type in the power-on state Displaying in a manner different from any of the display manners .

  ADVANTAGE OF THE INVENTION According to this invention, the source selection apparatus and source selection method which improve a user's operativity can be obtained.

  That is, according to the present invention, the source type that is initially selected at the time of power-on transition can be confirmed in a standby state, or the user can confirm the source type that is restored after listening to roadside band broadcasting, Or, the user can easily select a desired station from a large number of broadcasting stations, or even when using a general-purpose operation unit that can be rotated continuously, the operation of selecting an end option can be easily performed. It is possible to obtain a source selection device and a source selection method that can be performed.

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

Embodiment 1 FIG.
FIG. 1 is a front view showing an audio device incorporating a source selection device according to Embodiment 1 of the present invention. FIG. 2 is a block diagram showing a configuration of the audio apparatus 1 of FIG.

  The audio apparatus 1 is an in-vehicle apparatus, and includes a media selection apparatus, a source selection apparatus, a radio broadcast reception apparatus, and a CD and an MD. In the first embodiment, the user interface (UI) unit 31 and the control unit 33 in FIG.

  In FIG. 1, the source selection UI unit 11 includes a source type display unit that displays a source type according to the state of the audio device 1, and an operation unit that is operated when selecting the source type.

  The media insertion slot 12 is an opening formed on the front surface of the housing of the audio apparatus 1 in order to insert a CD into the CD playback unit 51. The eject button 13 is an operation unit that is operated when ejecting (ejecting) the inserted CD. The eject button 13 is a part of the CD operation unit 42 of FIG. Note that the CD operation unit 42 is an operation unit that is operated when CD playback, music selection, stop, and the like are performed. Here, illustrations other than the eject button 13 are omitted.

  The media insertion opening 14 is an opening formed on the front surface of the housing of the audio device 1 in order to insert the MD into the MD playback unit 52. The eject button 15 is an operation unit that is operated when ejecting (discharging) the inserted MD. The eject button 15 is a part of the MD operation unit 43 in FIG. Note that the MD operation unit 43 is an operation unit that is operated when MD reproduction, music selection, stop, and the like are performed. Here, illustrations other than the eject button 15 are omitted.

  Each of the eject buttons 13 and 15 includes a button member and a push switch that electrically detects a pressing operation on the button member.

  The tuning operation unit 16 is an operation unit that is operated when the reception frequency at the radio broadcast receiving unit 53 is changed and when traffic information is received from a specific broadcast station. In the first embodiment, the tuning operation unit 16 is a cylindrical operation unit, and includes a rotary encoder that optically or electrically detects a rotation operation, and a push switch that electrically detects a pressing operation. It is rotated when the reception frequency is changed, and pressed when starting and ending the reception of traffic information.

  The preset station selection operation unit 17 is an operation unit that is operated when a preset broadcast station is selected for the currently selected source type (here, “FM1”, “FM2”, or “AM”). In the first embodiment, the preset station selection operation unit 17 includes six button members and the same number of push switches that electrically detect a pressing operation on them.

  The volume adjustment operation unit 18 is an operation unit that is operated when adjusting the amplitude of the audio signal input to the amplifier 56. In the first embodiment, the volume adjustment operation unit 18 includes a cylindrical rotation operation unit and a rotary encoder that detects a rotation operation with respect to the rotation operation unit.

  The display device 19 is a device that includes a display panel such as a liquid crystal display and appropriately displays various states of the audio device using characters, pictures, and the like.

  The acoustic characteristic setting button 20 is an operation unit that is operated when adjusting the reverberation time. The equalizer button 21 is an operation unit that is operated when using / not using a filter (not shown) provided in front of the amplifier 56 and setting its frequency characteristics. The display color setting button 22 is an operation unit that is operated when the display color of the display device 19 is changed. In the first embodiment, each of the buttons 20 to 22 includes a button member and a push switch that detects a pressing operation on the button member.

  As described above, the UI unit 31 including the operation unit and the display unit described above is arranged on the front panel of the audio apparatus 1.

  The audio device 1 includes therein an audio sound reproducing unit 32 that outputs an audio signal from one of the audio signal output devices, and a control unit 33 that controls the inside of the audio device 1.

  First, the audio reproduction unit 32 includes a CD reproduction unit 51, an MD reproduction unit 52 and a radio broadcast reception unit 53 as an audio signal output device, a source selector 54, an electronic volume 55, and an amplifier 56.

  The CD playback unit 51 is a media playback device that reads audio data from a CD as a recording medium and outputs it as a digital or analog audio signal.

  The MD playback unit 52 is a media playback device that reads audio data from an MD as a recording medium and outputs it as a digital or analog audio signal.

  The CD playback unit 51 and the MD playback unit 52 are media playback devices that can insert and remove a recording medium, read audio data stored in the recording medium, and play back and output an audio signal from the audio data. The CD playback unit 51 and the MD playback unit 52 are source devices that provide “CD” and “MD” as source types, respectively, and are audio signal output devices that output audio signals.

  The radio broadcast receiving unit 53 is a broadcast receiving device that is connected to an antenna, demodulates electromagnetic waves and radio waves sensed by the antenna, and outputs them as digital or analog audio signals.

  The radio broadcast receiving unit 53 is a source device that provides “FM1”, “FM2”, and “AM” as source types, and is an audio signal output device that outputs an audio signal. Here, “FM1” is one group including a predetermined number of FM radio broadcasting stations and constitutes one source, and “FM2” is another group including a predetermined number of FM radio broadcasting stations. And constitutes one source. However, when “FM1” or “FM2” is selected as the source type, the reception frequency is changed to a frequency other than the broadcasting station included in “FM1” or “FM2” by operating the tuning operation unit 16. It is possible to do. “AM” is one group including a predetermined number of AM radio broadcasting stations and constitutes one source. However, when “AM” as the source type is selected, it is possible to change the reception frequency to a frequency other than the broadcasting station included in “AM” by operating the tuning operation unit 16.

  The source selector 54 is a device that is supplied with a control signal, selects one of a plurality of inputs according to the control signal, and outputs a signal of the selected input. In the first embodiment, the source selector 54 selects any one of the audio signals from the CD reproducing unit 51, the MD reproducing unit 52, and the radio broadcast receiving unit 53 in accordance with the control signal from the MPU 62, and selects the selected audio signal. Output a signal.

  The electronic volume 55 is a circuit that is supplied with a control signal and adjusts the amplitude of the audio signal in accordance with the control signal. The amplifier 56 is a circuit that amplifies the audio signal and outputs it such as a speaker.

  On the other hand, the control unit 33 includes a source control unit 61, an MPU 62, and a state storage unit 63.

  The source control unit 61 supplies control signals to the CD playback unit 51, the MD playback unit 52, and the radio broadcast reception unit 53 to control them, and the CD playback unit 51, the MD playback unit 52, and the radio broadcast reception unit. 53 is a circuit that acquires control signals from 53 and detects various states thereof.

  The microprocessing unit (MPU) 62 executes a program stored in a storage medium such as a ROM or a flash memory (not shown), and the state of the CD playback unit 51, the MD playback unit 52, and the radio broadcast reception unit 53, and the UI unit 31. The UI unit 31 is controlled based on the user's operation or the like, and the audio playback unit 32 is controlled directly or indirectly via the source control unit 61, and information processing in the control unit 33 is performed. An arithmetic processing device to be executed.

  The MPU 62 functions as a state transition unit that switches the operation state of the entire audio device 1 including the source selection device between the standby state and the power-on state.

  In the standby state, the UI unit 31 and the control unit 33 (or only the control unit 33) are operated by being supplied with power from the power source, but the CD playback unit 51, the MD playback unit 52 and the radio in the audio playback unit 31 are operating. In this state, no audio signal is output from any of the broadcast receiving units 53. In the first embodiment, power is supplied to the CD playback unit 51 and the MD playback unit 52 even in the standby state, and the CD and MD can be ejected from the CD playback unit 51 and the MD playback unit 52, respectively. It is. In the first embodiment, power supply to the electronic volume 55 and the amplifier 56 is stopped in the standby state.

  On the other hand, the power-on state is that power from the power source is supplied to all of the UI unit 31, the audio reproduction unit 32, and the control unit 33, and at least the CD reproduction unit 51, the MD reproduction unit 52, and the radio broadcast reception unit 53. One is a state in which an audio signal can be output or a state in which it is output. In other words, if an audio signal is output, it is in a power-on state, and the device is operating even if the audio signal is not temporarily output, such as during a broadcast station seek or a pause by a user operation. If so, the power is on.

  In the case of the audio apparatus 1 according to the first embodiment, for example, when the ignition key is set to the accessory (ACC) position, the standby state is set. When a predetermined operation unit (rotation operation unit 11f of the source selection UI unit 11 described later in the first embodiment) is operated in the standby state, the MPU 62 electrically detects the operation and performs source control. The sound reproducing unit 32 is controlled via the unit 61 or directly to shift to the power-on state. Further, when a predetermined operation unit (a rotation operation unit 11f of the source selection UI unit 11 described later in Embodiment 1) is operated in the power-on state, the MPU 62 electrically detects the operation. Then, the audio playback unit 32 is controlled via the source control unit 61 or directly to shift to the standby state. The MPU 62 also switches the operation state of the control unit 33 between the standby state and the power-on state, and changes the display method of the source type in the source selection UI unit 11 according to the state.

  The state storage unit 63 is a circuit or device that stores information about the current state and / or past state of the UI unit 31, the sound reproduction unit 32, and the control unit 33. In the first embodiment, the state storage unit 63 stores a series of source type information indicating the history of source types selected at present and / or in the past. In the standby state, the state storage unit 63 stores the source type information of the source types selected in the past in the order of selection, and in the power-on state, the source type information of the currently selected source type is the second and subsequent ones. In addition, the source type information of the source types selected in the past is stored in the order of selection. As the state storage unit 63, a volatile or nonvolatile memory, a magnetic recording medium, or the like is used as appropriate.

  FIG. 3 is a front view showing details of the source selection UI unit 11 in FIG. FIG. 4 is a perspective view showing details of the source selection UI unit 11 in FIG.

  As shown in FIGS. 3 and 4, in the source selection UI unit 11, display windows 11 a to 11 e for displaying the state of each source type (selected, selectable, and not selectable) on the annular source type display unit. Is arranged, and a cylindrical rotation operation unit 11f is disposed inside the annular source type display unit so that it can be pressed and rotated. Of the annular source type display portion, only the display windows 11a to 11e are transparent, and the other portions are colored and block the transmission of light from the back surface to the front surface. Each display window 11x (x = a, b, c, d, e) has the shape of a character string indicating the source type, and the source types “CD”, “MD”, “FM1”, “FM2”, “ Each corresponds to “AM”.

  A light emitting element such as a light emitting diode (LED) is disposed on the back side of each display window 11x (x = a, b, c, d, e), and a rotary encoder and a push switch are provided in the rotation operation unit 11f. Mechanically connected.

  FIG. 5 is a circuit diagram showing details of the electrical configuration of the source selection UI unit 11 and its drive circuit in FIG. Note that the circuit shown in FIG. 5 is an example, and other circuits that operate in the same manner may be used.

  In FIG. 5, light emitting diodes LEDr1 and LEDg1 are red and green light emitting elements that allow light to enter the display window 11a. The light emitting diodes LEDr2 and LEDg2 are red and green light emitting elements that allow light to enter the display window 11b. The light emitting diodes LEDr3 and LEDg3 are red and green light emitting elements that allow light to enter the display window 11c. The light emitting diodes LEDr4 and LEDg4 are red and green light emitting elements that allow light to enter the display window 11d. The light emitting diodes LEDr5 and LEDg5 are red and green light emitting elements that allow light to enter the display window 11e.

  The transistors Qr1 and Qg1 are switching elements that turn on or off the light emitting diodes LEDr1 and LEDg1, respectively. The transistors Qr2 and Qg2 are switching elements that turn on or off the light emitting diodes LEDr2 and LEDg2, respectively. The transistors Qr3 and Qg3 are switching elements that turn on or off the light emitting diodes LEDr3 and LEDg3, respectively. The transistors Qr4 and Qg4 are switching elements that turn on or off the light emitting diodes LEDr4 and LEDg4, respectively. The transistors Qr5 and Qg5 are switching elements that turn on or off the light emitting diodes LEDr5 and LEDg5, respectively.

  The bases of the transistors Qr1 to Qr5 and Qg1 to Qg5 are connected to the MPU 62 and turned on / off according to the level of the control signal from the MPU 62. In the circuit of FIG. 5, the transistors Qr1 to Qr5, Qg1 to Qg5 are N-type (NPN type) transistors, their emitters are grounded, and their collectors are the corresponding light emitting diodes (LEDr1 to LEDr5, LEDg1 to LEDg5). Connected to the cathode. The anodes of the light emitting diodes LEDr1 to LEDr5, LEDg1 to LEDg5 are connected to the power supply line Vcc via the resistor R1.

  On the other hand, a rotary encoder ENC and a push switch SW are mechanically connected to the rotation operation unit 11f. The rotation operation unit 11f is rotatable in both the clockwise direction and the counterclockwise direction, and is not mechanically locked at a predetermined rotation angle. The rotary encoder ENC is an element that outputs a pulse signal including a number of pulses proportional to the rotation angle of the rotation operation unit 11f, and the push switch SW is an element that is turned on / off in response to a pressing operation on the rotation operation unit 11f. is there. The output line of the rotary encoder ENC is connected to the MPU 62. One end of the push switch SW is grounded, and the other end is pulled up to the power supply voltage via the resistor R2 and connected to the MPU 62. A waveform shaping circuit or the like may be provided between the push switch SW and the MPU 62 in order to accurately detect the pressing operation.

  Next, the operation of the above apparatus will be described.

  FIG. 6 is a flowchart for explaining the operation of the audio apparatus 1 incorporating the source selection apparatus according to the first embodiment. FIG. 7 is a diagram showing a control pattern of the light emitting diodes LEDri, LEDgi (i = 1,..., 5) by the MPU 62 in the first embodiment. FIG. 7A shows a control pattern in a standby state, and FIG. 7B shows a control pattern in a power-on state.

  First, when a power source such as an in-vehicle battery is electrically connected to the audio device 1, the MPU 62 starts up and starts executing a predetermined program, and sets the operating state of the audio device 1 to a standby state (step S1). .

  Next, the MPU 62 reads the source type information stored in the state storage unit 63, and sets the source type indicated by the source type information as the source type automatically selected at the time of shifting to the power-on state. It is displayed on the UI unit 11 (step S2). At this time, as shown in FIG. 7A, the MPU 62 turns on the green light emitting diode LEDgj corresponding to the source type, the green light emitting diode LEDgk (k ≠ j) corresponding to the other source types, and all of them. The red light emitting diodes LEDr1 to LEDr5 are turned off.

  When the source type information is not stored in the state storage unit 63, the MPU 62 sets a predetermined source type (for example, “AM”) as the source type that is automatically selected when shifting to the power-on state. The source type information may be stored in the state storage unit 63 and displayed on the source selection UI unit 11.

  Thereafter, the MPU 62 determines whether or not a power-on operation has been detected in the standby state (step S3), and whether or not ejection of the recording medium has occurred for the source type displayed on the source selection UI unit 11 (step S4). To monitor.

  The MPU 62 determines whether or not a power-on operation has occurred, based on the voltage of the output line from the push switch SW of the source selection UI unit 11. Further, the MPU 62 determines whether or not ejection of the recording medium has occurred for the source type being displayed based on a control signal from the CD playback unit 51 or the MD playback unit 52 detected by the source control unit 61.

  When the recording medium is ejected for the currently displayed source type, the MPU 62 switches the display of the source type that is automatically selected when shifting to the power-on state (step S5). At this time, the MPU 62 reads the source type information stored next to the source type information of the source type before display switching in the state storage unit 63, and sets the source type as the source type after display switching. Further, the MPU 62 deletes the source type information of the source type before the display switching from the state storage unit 63, and sets the source type information of the source type after the display switching as the head (step S6).

  For example, when the two types of source information are stored in the status storage unit 63 in the order of “CD” and “FM1”, and the source type “CD” is displayed in step S2, the CD playback unit When the CD is ejected from 51, the MPU 62 turns off the light emitting diode LEDg1 of the source type “CD” and turns on the light emitting diode LEDg3 of the source type “FM1”. Thereafter, in step S2, the light emitting diode LEDg3 is continuously turned on.

  Further, for example, the three types of source information are stored in the state storage unit 63 in the order of “CD”, “MD”, and “FM1”, and the source type “CD” is displayed in step S2. In this case, when the CD is ejected from the CD reproducing unit 51, the MPU 62 turns off the light emitting diode LEDg1 of the source type “CD” and turns on the light emitting diode LEDg2 of the source type “MD”. Thereafter, when the MD is ejected from the MD reproducing unit 52, the MPU 62 turns off the light emitting diode LEDg2 of the source type “MD” and turns on the light emitting diode LEDg3 of the source type “FM1”. However, in the standby state, the three types of source information are stored in the state storage unit 63 in the order of “CD”, “MD”, and “FM1”, and the source type “CD” is displayed in step S2. When the recording medium (MD) of the source type “MD” that is not displayed is ejected, the MPU 62 deletes the source type information of “MD” stored in the state storage unit 63. In this case, the MPU 62 continuously turns on the light emitting diode LEDg1 of the source type “CD”.

  As shown in FIG. 7A, when the MPU 62 detects an ejection operation of the recording medium, the light emitting diode LEDgi (i = 1,...) Corresponding to the recording medium until the ejection operation is completed.・ Flash 5).

  Thus, in the standby state, the source type that is automatically selected when shifting to the power-on state is displayed based on the source type information stored in the state storage unit 63.

  In the standby state, when the MPU 62 determines that a pressing operation on the rotation operation unit 11f of the source selection UI unit 11, that is, a power-on operation has occurred, based on the voltage of the output line of the push switch 11f in the source selection UI unit 11, The operating state of the audio apparatus 1 is shifted to the power-on state (step S7). As a result, power is supplied to all the components of the audio playback unit 32.

  Further, the MPU 62 changes the display method in the source selection UI unit 11 from the display method in the standby state at the time of shifting to the power-on state. In the power-on state, the MPU 62 displays the currently selected source type in the first mode and displays the selectable source types in the second mode. In the first embodiment, as shown in FIG. 7B, the MPU 62 lights the red light emitting diode LEDrj (j = 1,..., 5) of the selected source type in the power-on state. The green light emitting diodes LEDgk (k ≠ j) of the selectable source types are turned on, and the other light emitting diodes LEDrp (p ≠ j) and LEDgq (q ≠ k) are turned off. At this time, the MPU 62 determines whether or not playback is possible with a CD inserted into the CD playback unit 51 via the source control unit 61, and whether or not playback is possible with an MD inserted into the MD playback unit 52. It is determined whether or not the source types “CD” and “MD” are selectable source types. That is, if a CD is inserted in the CD playback unit 51, it is determined that the source type “CD” can be selected because an audio signal can be output, and otherwise, it is determined that the source type “CD” cannot be selected. Is done.

  Then, the MPU 62 reads the head source type information stored in the state storage unit 63, and causes the source selector 54 to select an input from the audio signal output device corresponding to the source type indicated by the source type information (step S8). ). The source type selected at this time is the same as the source type displayed in step S2.

  Further, the MPU 62 supplies information on the type of the audio signal output device (and the source type if necessary) to the source control unit 61, and the source control unit 61 supplies a control signal to the audio signal output device, The audio signal of the source type is output (step S9).

  Accordingly, the audio signal output from the source selector 54 by any one of the audio signal output devices (one of the CD playback unit 51, the MD playback unit 52, and the radio broadcast reception unit 53) is supplied to the electronic volume 55. . The electronic volume 55 adjusts the amplitude of the audio signal according to the control signal from the MPU 62. The MPU 62 supplies a control signal corresponding to the operation amount detected from the audio adjustment operation unit 18 to the electronic volume 55. The audio signal output from the electronic volume 55 is amplified by the amplifier 56, and the amplified audio signal is output to a speaker or the like. A reverberation time characteristic and a frequency characteristic based on a control signal from the MPU 62 corresponding to an operation on the acoustic characteristic setting button 20 and the equalizer button 21 are realized by a filter and an effector (not shown) provided in the front stage of the amplifier 56. .

  As described above, when the power-on operation is detected, the MPU 62 causes the audio playback unit 32 to automatically start outputting the audio signal of the source type displayed on the source selection UI unit 11 in the standby state. .

  In the power-on state, the MPU 62 determines whether or not a source type switching operation has occurred (step S10), whether or not a recording medium has been ejected (step S11), and a power-off operation (for shifting to the standby state). It is monitored whether or not (operation S) has occurred (step S12).

  The MPU 62 determines whether or not a source type switching operation has occurred, based on a signal from the rotary encoder ENC of the source selection UI unit 11. The MPU 62 specifies the operation direction and operation amount of the rotation operation for the rotation operation unit 11f of the source selection UI unit 11 based on the signal, and the currently selected source type is determined according to the operation direction and operation amount. It is determined that an operation for selecting another source type has occurred. The MPU 62 specifies a source type different from the currently selected source type according to the operation direction and operation amount of the source type switching operation. At that time, the MPU 62 specifies another source type only from the source types that can be selected at that time.

  When the source type switching operation occurs, the MPU 62 first stores the source type information of the switched source type in the state storage unit 63 (step S13). At this time, the source type information is inserted and stored in the state storage unit 63 at the head. That is, other existing source type information in the state storage unit 63 is not overwritten or deleted.

  Next, the MPU 62 causes the source selection UI unit 11 to display the source type selected after switching on the source selection UI unit 11 in a mode different from other selectable source types, and input of the audio signal output device corresponding to the source type Is selected by the source selector 54 (step S14). In the first embodiment, the display of the source type selected after switching changes from green to red, and the display of the source type selected before switching changes from red to green.

  Then, the MPU 62 supplies information of the audio signal output device (and the source type as necessary) corresponding to the switched source type to the source control unit 61. Based on the information, the source control unit 61 stops outputting the audio signal of the source type before switching, and starts outputting the audio signal of the source type after switching (step S15).

  Thereafter, the MPU 62 returns to the monitoring state of steps S10 to S12.

  On the other hand, the MPU 62 determines whether ejection of the recording medium has occurred or not based on the control signal from the CD playback unit 51 or the MD playback unit 52 detected by the source control unit 61 (step S11).

  When the recording medium is ejected, the MPU 62 deletes the source type information of the source type in which the ejection has occurred from the state storage unit 63 (step S16). Further, the MPU 62 determines whether or not the source type in which the ejection has occurred is being reproduced (step S17). When an ejection occurs, the display of the source type is changed to blinking in green during the period until the ejection is completed.

  When the source type in which the ejection has occurred is being reproduced, the MPU 62 reads out the head source type information from the state storage unit 63 (step S18). In step S16, since the source type information of the source type in which the ejection has occurred is deleted, the source type information read in step S18 is the source type selected immediately before the source type in which the ejection has occurred. Will be shown.

  Then, the MPU 62 causes the source selection UI unit 11 to display the source type indicated by the source type information, and causes the source selector 54 to select the input of the audio signal output device corresponding to the source type (step S14). In the first embodiment, the display of the newly selected source type changes from green to red, and the source type in which ejection has occurred changes from red display to no display (turned off).

  Then, the MPU 62 supplies the information of the audio signal output device corresponding to the source type (and the source type if necessary) to the source control unit 61. Based on the information, the source control unit 61 stops the output of the audio signal of the source type in which ejection has occurred, and starts the output of the audio signal of the newly selected source type (step S15).

  Thereafter, the MPU 62 returns to the monitoring state of steps S10 to S12.

  Further, when the ejection type of the recording medium has occurred and the source type in which the ejection has occurred is not being played back, the MPU 62 cannot select the source type that was selectable before the ejection. The display of the source selection UI unit 11 for the type is stopped (step S19). In the first embodiment, when an ejection occurs for a source type that was not being reproduced, the source type changes from green display to no display (turned off).

  Thereafter, the MPU 62 returns to the monitoring state of steps S10 to S12.

  On the other hand, the MPU 62 determines whether or not a power-off operation has occurred, based on the voltage of the output line from the push switch SW of the source selection UI unit 11 (step S12). That is, in the power-on state, if a pressing operation occurs on the rotation operation unit 11f of the source selection UI unit 11, it is determined that the operation is a power-off operation.

  When the MPU 62 determines in the power-on state that a pressing operation on the rotation operation unit 11f of the source selection UI unit 11, that is, a power-off operation has occurred, based on the voltage of the output line of the push switch 11f in the source selection UI unit 11. Then, the operation state of the audio apparatus 1 is shifted to the standby state (step S1). Thereby, the output of the audio signal is stopped by the control of the MPU 62, and the display of the source type in the source selection UI unit 11 is also changed to the above-described display state in the standby state.

  Further, at the time of power off (at the time of transition from the power on state to the standby state), the source type information at the head in the state storage unit 63 is the source type selected until just before the power off. Therefore, in the standby state, only the source type is displayed on the source selection UI unit 11, and the source type is automatically selected in principle at the time of transition to the next power-on state. However, if the source type selected until immediately before the power-off is the source type by the media playback device, and the recording medium is removed from the media playback device in the standby state, the source type immediately before that source type The source type selected in is selected. Furthermore, when the source type selected immediately before is based on the media playback device and the recording medium is also extracted from the media playback device, the source type selected immediately before is Selected.

  Thus, since the source type by the media playback device may not be selectable in the standby state, the state storage unit 63 has at least one source type information of a source type other than the source type by the media playback device. Preferably it is stored.

  As described above, the audio device 1 is in an operation state of either the standby state or the power-on state, and changes the display method of the source type in the source selection UI unit 11 according to the operation state. The display of the source type is dynamically changed according to whether or not the source type can be selected by the media playback device.

  Here, an example of a display change of the source type in the source selection UI unit 11 according to the source type switching operation and ejection of the recording medium will be described. FIG. 8 is a diagram for explaining an example of a display change of the source type in the source selection UI unit 11 according to the source type switching operation and the ejection of the recording medium in the first embodiment.

  State 1 in FIG. 8 is a power-on state, in which a power-on operation is detected and the immediately preceding source type is selected. In the state 1, since the source type “FM1” is selected, the source type “FM1” is displayed, and the LEDr3 is lit red. In state 1, since the CD is inserted, it is determined that the source types “CD”, “FM2”, and “AM” can be selected, and the LEDs g1, 4, 5 are lit in green. Yes. At this time, since the MD is not inserted, the source type “MD” is turned off.

  In the drawings, for the sake of convenience of explanation, those that are lit in red are bold typefaces, those that are lit in green are white typefaces, and those that are off are white and dashed outlines. It is expressed in the typeface. The same applies to drawings other than FIG.

  In state 1, when an operation amount corresponding to a predetermined rotation angle is detected in the counterclockwise direction with respect to the rotation operation unit 11f, a selectable source type “CD” adjacent to the counterclockwise direction from “FM1”. Is selected. In this case, even if a counterclockwise rotation operation is detected, the unlit source type “MD” cannot be selected, and therefore is not selected.

  In this case, if an operation amount for a predetermined rotation angle in the clockwise direction is detected, the source type “FM2” is selected, and further, an operation amount for the predetermined rotation angle in the same direction. Is detected, the selection of “FM2” is canceled and the source type “AM” is selected.

  As described above, the MPU 62 selects one of the source types displayed by the source selection UI unit 11 according to the rotation operation detected by the rotary encoder ENC. At this time, if the rotational operation amount detected by the rotary encoder ENC exceeds the rotational operation amount for selecting the source type positioned at the beginning or end of the source type array, the MPU 62 determines whether the rotational operation amount is in accordance with the rotational operation direction. Select the source type located at the beginning or end of the source type array. That is, in the first embodiment, in the state 1 of FIG. 8, when the rotation operation unit 11f is rotated counterclockwise by a certain angle or more, the source type “CD” at one end of the source type display array is displayed. Is always selected. Further, when the rotation operation unit 11f is rotated more than a certain angle in the clockwise direction, the source type “AM” at the other end is always selected. If “CD” is not displayed in state 1 and “FM1”, “FM2”, and “AM” are displayed, “FM1” that is currently selected is at the end. “FM1” is continuously selected no matter how many times the rotation operation unit 11f is rotated clockwise.

  When the above-described CD selection operation occurs in state 1, the source selection UI unit 11 and the state storage unit 63 shift to state 2.

  In state 2, the top source type information in state storage unit 63 is “CD”, and the next source type information is that of “FM1” selected in state 1. In state 2, since the source type “CD” is selected, the source type “CD” is displayed, and the LED r1 is lit red. In state 2, it is determined that the source types “FM1”, “FM2”, and “AM” can be selected, and the LEDs g3, 4, and 5 are lit in green. At this time, since the MD is not inserted, the source type “MD” is turned off.

  In the state 2, when the CD is ejected, the source selection UI unit 11 and the state storage unit 63 shift to the state 3.

  In the state 3, the source type “CD” cannot be selected due to the CD ejection, the source type information of “CD” is deleted from the state storage unit 63, and the top source type information in the state storage unit 63 becomes “FM1”. Then, the source type “FM1” is selected. Therefore, in the state 3, since the source type “FM1” is selected, the source type “FM1” is displayed, and the LEDr3 is lit red. In state 3, it is determined that the source types “FM2” and “AM” can be selected, and the LEDs g4 and 5 are lit in green. At this time, neither MD nor CD is inserted. Therefore, the source types “CD” and “MD” are turned off.

  On the other hand, when a power-off operation occurs in the state 2, the source selection UI unit 11 and the state storage unit 63 shift to the state 4. Since the state 4 is a standby state, the source type “CD” corresponding to the source type information at the head of the state storage unit 63 is displayed in green, and other source types are not displayed.

  In state 4, when a power-on operation is detected, the source selection UI unit 11 and the state storage unit 63 shift to state 5. The state 5 is a power-on state, and “CD” corresponding to the head source type information in the state storage unit 63, that is, “CD” displayed in green in the standby state is automatically selected. In state 5, the source type “CD” is displayed in red, and selectable “FM1”, “FM2”, and “AM” are displayed in green. At this time, since MD is not inserted, “MD” is not displayed.

  On the other hand, when the ejection of the CD is detected in the state 4, the source selection UI unit 11 and the state storage unit 63 shift to the state 6. Due to the CD ejection, the source type information of “CD” in the state storage unit 63 is deleted, and the source type information of “FM1” becomes the head. Since the state 6 is a standby state, the source type “FM1” corresponding to the first source type information in the state storage unit 63 is displayed in green, and the other source types are not displayed.

  As described above, according to the first embodiment, the source selection UI unit 11 as a display unit displays a plurality of source types by one or a plurality of source devices, respectively. Further, the MPU 62 as the state transition means shifts the operation state of the audio apparatus 1 between the standby state and the power-on state. Further, the state storage unit 63 as a storage unit stores source type information indicating the source type selected in the power-on state. Then, the MPU 62 as the source type selection unit controls the source selection UI unit 11 in the standby state, and displays the source type indicated by the source type information stored in the state storage unit 63 among the plurality of source types. Let Further, the MPU 62 as the source type selection unit selects one source type from among a plurality of source types, and the source stored in the state storage unit 63 when the operation state shifts from the standby state to the power-on state. Select the source type indicated by the type information. In particular, the MPU 62 displays the source type indicated by the source type information stored in the state storage unit 63 among the plurality of source types in a standby state, separately from the source types of the remaining audio signal output devices.

  As a result, the source type initially selected at the time of power-on transition can be easily confirmed in the standby state.

  Further, according to the first embodiment, the state storage unit 63 stores the source type information indicating the source type of the media playback device and the source type information indicating the source type selected immediately before the source type. To do. When the MPU 62 detects ejection of the recording medium when the source type of the media playback device is displayed in the standby state, the MPU 62 refers to the source type information in the state storage unit 63 and controls the source selection UI unit 11. Thus, the display of the source type of the media playback device is stopped, and the source type selected immediately before the source type of the media playback device is displayed.

  As a result, even when the source type initially selected at the time of power-on transition cannot be selected due to ejection of the recording medium, the alternative source type can be easily confirmed in the standby state.

  Further, according to the first embodiment, the MPU 62 switches from the standby state to the power-on state when the source type information of the media playback device that has detected ejection of the recording medium in the standby state is stored in the state storage unit 63. Is selected, the source type selected immediately before the source type of the media playback device is selected based on the source type information stored in the state storage unit 63.

  As a result, even if the source type selected at the time of power-on transition cannot be selected due to the ejection of the recording medium, the alternative source type is automatically selected, and the alternative source type can be easily selected in the standby state. Can be confirmed.

  Further, according to the first embodiment, the MPU 62 specifies whether or not audio signals can be output for the source types of the plurality of audio signal output devices in the power-on state, and controls the source selection UI unit 11 to control the source selection UI unit 11. Of the source types that can output audio signals, the currently selected source type is the first mode (in this case, lit red), and the remaining source types are the second mode (here, different from the first mode). (Lit in green) and source types that cannot output audio signals are not displayed.

  Thereby, when the user tries to select a source type other than the currently selected source type, the options can be easily confirmed.

  Further, according to the first embodiment, the push switch SW as the first operation detecting unit detects a pressing operation on the rotation operation unit 11f that is rotatable and can be pressed, and serves as the second operation detecting unit. The rotary encoder ENC detects a rotation operation on the rotation operation unit 11f. Then, when the push operation to the rotation operation unit 11f is detected by the push switch SW, the MPU 62 alternately shifts the operation state of the audio device 1 between the standby state and the power-on state. Further, the source type display unit of the source selection UI unit 11 is arranged along the circumferential direction around the rotation operation unit 11f, has a state of lighting and extinguishing, and displays the source type by lighting for each source type. Then, in the power-on state, the MPU 62 selects one of the source types that can output an audio signal in accordance with the rotation operation detected by the rotary encoder ENC.

  As a result, the operation unit related to the switching between the power-on state and the standby state and the selection of the source type and the display of the source type in each operation state are collected in one place of the source selection UI unit 11, and the source in each state The user can easily understand the meaning of the type display.

  In addition, according to the first embodiment, the source type display unit of the source selection UI unit 11 performs broadcasting when a plurality of broadcast stations of the same modulation scheme that can be received by the broadcast receiving apparatus are preset to a plurality of groups. Each of a plurality of groups preset for the receiving device is set as one source type, and a plurality of source types are arranged and displayed. In particular, in the first embodiment, the source selection UI unit 11 includes a first FM station group in which a predetermined number of FM stations are preset for a broadcast receiving apparatus that receives FM broadcasts and AM broadcasts. The second FM station group with preset FM stations and the AM station group with preset number of AM stations are arranged as source types and displayed simultaneously.

  As a result, the number of user operations until channel selection is reduced, and a user can easily select a desired station from a large number of broadcasting stations.

  Further, according to the first embodiment, the rotary encoder ENC as the rotation operation detecting means detects the rotation operation on the rotation operation unit 11f that can continuously rotate a plurality of times. The source type display unit of the source selection UI unit 11 displays a plurality of source types by one or a plurality of source devices arranged around the rotation operation unit 11f along the circumferential direction. Then, the MPU 62 selects one of the source types displayed by the source type display unit according to the rotation operation detected by the rotary encoder ENC, and the rotation operation amount detected by the rotary encoder ENC is When the amount of rotation operation for selecting the source type located at the beginning or end of the source type array is exceeded, the source type located at the beginning or end of the source type array is selected according to the direction of the rotation operation. .

  As a result, there is no direct transition from one end option to the other end option in the source type array, so even when using a general-purpose operation unit that can be rotated continuously, the end It is possible to easily perform an operation of selecting an option.

  Further, according to the first embodiment, the MPU 62 as the determination unit determines whether each source device can output the source signal of each source type, and the source type display unit of the source selection UI unit 11 Based on the determination, only the source type that can output the source signal is displayed around the rotation operation unit 11f along the circumferential direction.

  As a result, even if the source type located at the beginning or end of the source type array is changed, the source type located at the beginning or end is always selected when the rotation operation amount is exceeded accordingly. It is possible to easily perform the operation of selecting the part options.

Embodiment 2. FIG.
In addition to the configuration of the first embodiment, the audio apparatus according to the second embodiment of the present invention switches the display method of the source selection UI unit 11 when listening to traffic information. In the second embodiment, the traffic information is not one of the source types. The configuration of the audio apparatus according to the second embodiment is the same as that of the first embodiment, but the control by the MPU 62 is changed from the first embodiment.

  Next, the operation of the audio device when listening to traffic information in the second embodiment will be described. FIG. 9 is a diagram showing a control pattern of the light emitting diodes LEDri, LEDgi (i = 1,..., 5) by the MPU 62 when listening to traffic information in the second embodiment. FIG. 9A shows the control pattern in the power-on state, and FIG. 9B shows the control pattern in the standby state.

  In the power-on state, when any source type is selected, the MPU 62 causes the source selector 54 to select an input from the radio broadcast receiving unit 53 when detecting a pressing operation on the tuning operation unit 16. In addition, a traffic information listening start command is supplied to the source control unit 61.

  Based on the command, the source control unit 61 controls the radio broadcast receiving unit 53 to set the modulation method and the reception frequency to the predetermined modulation method and frequency of the traffic information broadcasting station, and outputs an audio signal.

  Thereby, an audio signal of traffic information is output to a speaker or the like.

  Thereafter, when the MPU 62 detects a pressing operation on the tuning operation unit 16, the MPU 62 reads the head source type information in the state storage unit 63, identifies the source type indicated by the source type information, and sends the source type information to the source selector 54. The input from the audio signal output device is selected.

  Thereby, after listening to traffic information, the source type immediately before listening to traffic information is automatically selected, and an audio signal of the source type is output to a speaker or the like.

  In this series of processing, when detecting a pressing operation on the tuning operation unit 16 at the start of listening to traffic information, the MPU 62 changes the display method of the source selection UI unit 11 and sets the source type (that is, the state immediately before the start of listening to traffic information). The source type indicated by the first source type information in the storage unit 63 is displayed in another manner. The source type immediately before the start of listening to traffic information is the source type after the end of listening to traffic information.

  In the second embodiment, as shown in FIG. 9A, the MPU 62 causes both the red and green light emitting diodes LEDri, gi corresponding to the source type to emit light, and displays the source type in orange. The other source types are not normally displayed, but the source type corresponding to the recording medium is displayed in green blinking while the CD or MD is ejected.

  On the other hand, when detecting a pressing operation on the tuning operation unit 16 in the standby state, the MPU 62 causes the source selector 54 to select an input from the radio broadcast receiving unit 53 and instructs the source control unit 61 to start listening to traffic information. Supply. Based on the command, the source control unit 61 controls the radio broadcast receiving unit 53 to output an audio signal of traffic information.

  Thereby, an audio signal of traffic information is output to a speaker or the like.

  Thereafter, when the MPU 62 detects a pressing operation on the tuning operation unit 16, the MPU 62 stops the output of the audio signal from the radio broadcast receiving unit 53 via the source control unit 61 and shifts the operation state to the standby state.

  Thereby, after the end of listening to traffic information, it automatically returns to the standby state, which is the state immediately before listening to traffic information.

  In this series of processes, when detecting a pressing operation on the tuning operation unit 16 at the start of listening to traffic information, the MPU 62 changes the display method of the source selection UI unit 11. Since the operation state of the audio device 1 returns to the standby state after the traffic information listening is completed, all source types are not displayed until the traffic information listening is completed, as shown in FIG. 9B.

  Here, an example of the display change of the source type in the source selection UI unit 11 from the start to the end of the traffic information listening will be described. FIG. 10 shows an example of the display change of the source type in the source selection UI unit 11 from before the start of the traffic information to after the end when the traffic information listening occurs in the power-on state in the second embodiment. FIG. FIG. 11 is a diagram illustrating an example of display change of the source type in the source selection UI unit 11 from before the start of the traffic information to after the end when the traffic information listening occurs in the standby state in the second embodiment. It is.

  In FIG. 10, in the state 2, the source type “CD” is selected, displayed in red, selectable “FM1,” “FM2,” and “AM” are displayed in green, and cannot be selected “MD”. Is not displayed.

  In state 2, when detecting the above-described traffic information listening start operation, the MPU 62 changes the display method and shifts the display state to state 7. In the state 7, the MPU 62 displays “CD” selected in the state 2 in orange, and stops the display of other source types. In FIG. 10, due to the limitations of the drawing, the orange source type is also represented by a bold character string in the same manner as the red source type (the same applies to other drawings).

  Thereafter, in state 7, when the MPU 62 detects the above-described traffic information listening end operation, the MPU 62 changes the display method and shifts the display state to state 2. State 2 is a state before the start of listening to traffic information.

  On the other hand, in the state 7, when the CD is ejected while listening to the traffic information, the MPU 62 shifts the display state of the source selection UI unit 11 to the state 8. That is, the MPU 62 deletes the source type information of “CD” in the state storage unit 63 in response to the ejection of the CD, selects “FM1” indicated by the source type information located at the head, and listens to the traffic information. “FM1” is displayed in orange.

  Thereafter, in the state 8, when the MPU 62 detects the above-described traffic information listening end operation, the MPU 62 changes the display method and shifts the display state to the state 9. In the state 9, the MPU 62 automatically selects “FM1” indicated by the source type information in the state storage unit 63, outputs the audio signal from “FM1”, and displays the “FM1” in red. Further, selectable “FM2” and “AM” are displayed in green.

  On the other hand, in FIG. 11, in the state 4 in the standby state, the top source type information in the state storage unit 63 is “CD”, “CD” is displayed in green, and other source types are displayed. It has not been.

  In the state 4, when the MPU 62 detects the above-described traffic information listening start operation, the MPU 62 changes the display method and shifts the display state to the state 10. In state 10, display of all source types is stopped.

  Thereafter, in the state 10, when the MPU 62 detects the above-described traffic information listening end operation, the MPU 62 changes the display method and shifts the display state to the state 4. State 4 is a state before the start of listening to traffic information.

  On the other hand, in the state 10, when the CD is ejected while listening to traffic information, the MPU 62 shifts the display state of the source selection UI unit 11 to the state 11. That is, the MPU 62 deletes the source type information of “CD” in the state storage unit 63 in response to the ejection of the CD.

  Thereafter, in the state 11, when the MPU 62 detects the above-described traffic information listening end operation, the MPU 62 changes the display method and shifts the display state to the state 12. In the state 12, the MPU 62 selects “FM1” indicated by the source type information located at the head in the state storage unit 63, and displays “FM1” in green during the standby state.

  Since other operations of the audio apparatus according to the second embodiment are the same as those in the first embodiment, description thereof is omitted.

  As described above, according to the second embodiment, the source selection UI unit 11 as a display unit displays a plurality of source types by one or a plurality of audio signal output devices including a broadcast receiving device. Further, the MPU 62 as the source type selection unit selects any one of the plurality of source types. The state storage unit 63 as a storage unit stores source type information indicating the source type selected by the MPU 62. The rotation operation unit 11f as the specific purpose operation unit is operated at the start and end of listening to a broadcast having specific purpose contents such as traffic information. Note that the information on the modulation system and the broadcast frequency of such a broadcast station is stored in advance in the radio broadcast receiving unit 53 or the source control unit 61.

  When the MPU 62 serving as the source type display control unit detects the listening start operation for the rotation operation unit 11f, the MPU 62 controls the source selection UI unit 11 to store the source type stored in the state storage unit 63 when the listening start operation is detected. When the source type indicated by the information is displayed in a manner different from that before detecting the listening start operation, and then the listening end operation for the rotation operation unit 11f is detected, it is stored in the state storage unit 63 when the listening start operation is detected. The source type indicated by the source type information is displayed in the same manner as before the listening start operation is detected.

  Thereby, the user can confirm the source type to be restored after the end of listening to a broadcast (for example, a roadside band broadcast) having a specific purpose such as traffic information while listening to the broadcast.

  Further, according to the second embodiment, the state storage unit 63 stores source type information indicating the source type selected in the power-on state, and the MPU 62 detects a listening start operation in the power-on state. When the listening start operation is detected, the source type indicated by the source type information stored in the state storage unit 63 is displayed in a manner different from that before detecting the listening start operation. When the operation is detected, the source type indicated by the source type information stored in the state storage unit 63 is displayed in the same manner as before the listening start operation is detected. On the other hand, when a listening start operation is detected in the standby state, the MPU 62 stops displaying all source types until a listening end operation is detected.

  As a result, when the broadcast information having the specific purpose such as traffic information (for example, roadside band broadcast) is in the power-on state before the start of listening, the source type selected in the power-on state is displayed. No source type is displayed when the device is in the standby state, so if the listening state is in the standby state before the start of listening, the user must confirm that it will return to the standby state, i.e., the silent state, after the end of listening. Can do.

Embodiment 3 FIG.
In addition to the configuration of the first or second embodiment, the audio device according to the third embodiment of the present invention is configured to switch the display method of the source selection UI unit 11 during the auto seek operation of the broadcasting station. The configuration of the audio apparatus according to the third embodiment is the same as that of the first or second embodiment, but the control by the MPU 62 is changed from the first or second embodiment.

  The auto seek operation is started when a predetermined operation unit is operated while any of the radio broadcast source types “FM1”, “FM2”, and “AM” is selected, and is being selected. In the modulation method corresponding to the source type, the reception frequency is changed in order within the predetermined frequency band, the station that can receive the signal is searched, and the station that can obtain the received signal at the predetermined electric field strength or higher is automatically preset Is the action. For example, as shown in FIG. 1, when six presets P1 to P6 are possible for one source type, six stations are preset for each of FM1, FM2, and AM. In this case, a station having a high electric field strength may be preset in “FM1”, and a station having a low electric field strength may be preset in “FM2”. In addition, when an auto seek operation is performed when “FM1” or “FM2” is selected, discovered stations may be preset for both “FM1” and “FM2”, which are the same modulation schemes. The discovered station may be preset only for either “FM1” or “FM2” being selected. Alternatively, discovered stations may be preset for all radio broadcast source types “FM1”, “FM2”, and “AM”. Such a function is convenient when a station in another area is preset when visiting another area.

  In the third embodiment, when the MPU 62 detects an operation (auto seek operation) for executing an auto seek operation on a predetermined operation unit (not shown), the MPU 62 supplies an auto seek operation command to the source control unit 61. To do. In response to the command, the source control unit 61 controls the radio broadcast receiving unit 53 to execute an auto seek operation.

  During the auto seek operation, the MPU 62 changes the display method of the source selection UI unit 11. During the auto seek operation, the MPU 62 displays the source type that is the target of the auto seek operation in a mode different from the currently selected source type and the selectable source type. In the third embodiment, the source type that is the target of the auto seek operation is displayed in orange during the period from the start of auto seek to the completion.

  FIG. 12 is a diagram illustrating an example of a display change of the source type in the source selection UI unit 11 from the start to the end of the auto seek operation in the third embodiment.

  In FIG. 12, a state 13 is a state in which “FM2” is selected in the power-on state. When the auto seek operation is detected in the state 13, the MPU 62 changes the display method of the source selection UI unit 11 to shift the display state to the state 14, and “FM1” and “FM2” that are targets of the auto seek operation. And “AM” is displayed in orange. At this time, “CD” that can be selected in the state 13 is displayed in green as it is in the state 14.

  Thereafter, when the auto seek operation is completed, the MPU 62 returns the display state of the source selection UI unit 11 from the state 14 to the original state 13.

  On the other hand, when the selection operation of “CD” is detected in the state 14, the MPU 62 selects “CD”, causes the source selector 54 to select the audio signal from the CD reproducing unit 51, and changes the display state to the state 15. In the source selection UI unit 11, “CD” is displayed in red, and “FM1”, “FM2”, and “AM” are continuously displayed in orange. After that, when the auto seek operation is completed, the MPU 62 shifts the display state of the source selection UI unit 11 from the state 15 to the state 16, continuously displays “CD” being selected in red, and selects the selectable “FM1”. ”,“ FM2 ”and“ AM ”are displayed in green.

At this time, when the selection operation of “CD” is detected in the state 14, the auto seek operation may be terminated and the state 14 may be directly shifted to the state 16.

  Since other operations of the audio apparatus according to Embodiment 3 are the same as those in Embodiment 1 or 2, description thereof is omitted.

  As described above, according to the third embodiment, the MPU 62 functioning as the source type display control unit performs the source selection UI as the display unit during the auto seek operation of the broadcast receiving device among the plurality of audio signal output devices. The control unit 11 is controlled to display the source type subject to auto seek in a mode (here orange) that is different from both the source type display mode in the power-on state and the source type display mode in the standby state. .

  Accordingly, the user can visually recognize that the audio signal of the source type that is the target of the auto seek due to the auto seek is not output. As a result, it is possible to reduce the possibility of mistaking it as a failure due to a silent state.

Embodiment 4 FIG.
In the fourth embodiment of the present invention, any one of the first to third embodiments is applied to an AV apparatus that handles an audio signal and a video signal. In the fourth embodiment, the AV apparatus switches the source signal from the source apparatus that outputs only the audio signal and the video signal or the video signal as the source signal based on the source type.

  Examples of the source type in the fourth embodiment include a source type “DVD” by a DVD playback unit as a media playback device, a source type “TV” by a television broadcast receiving unit, and a source by a personal computer equipped with a communication device. The type “PC” is possible. In this case, for example, the source selection UI unit 11 displays source types such as “DVD”, “TV”, and “PC”. The source type “TV” may be a plurality of source types such as “UHF” and “VHF”.

  In the fourth embodiment, the type of the source device is different from that in the first to third embodiments, but the configuration as the source selection device may be the same as that in any of the first to third embodiments. Therefore, description of the source selection device and the AV device is omitted here.

  As described above, according to the fourth embodiment, the same effects as in the first to third embodiments can be obtained not only for audio devices but also for AV devices that handle video signals.

  Each embodiment described above is a preferred example of the present invention, but the present invention is not limited to these, and various modifications and changes can be made without departing from the scope of the present invention. It is.

  For example, in each of the above embodiments, the source types “FM1”, “FM2”, “AM”, and “TV” by the radio broadcast receiving unit 53 can be selected except during the auto seek, but “FM1”, When a predetermined frequency band in each source type of “FM2”, “AM”, and “TV” is periodically scanned and there is no station that can be received, selection may be disabled.

  In each of the above embodiments, the UI unit 31 and the audio reproduction unit 32 are provided in the same casing. However, the UI unit 31 is provided in a casing or a remote controller different from the audio reproduction unit 32. It may be. Further, the audio signal output device may be provided separately from the audio device 1, and the signal from the audio signal output device may be input to the source selection device in the audio device 1.

  In each of the above embodiments, during standby, the source type selected at the time of transition to the power-on state is displayed and other source types are not displayed, but instead, at the time of standby, at the time of transition to the power-on state. The selected source type may be displayed in the first mode, and the other source types may be displayed in a second mode different from the first mode.

  In each of the above embodiments, the currently selected source type is red, the source type that can be selected in the power-on state, and the source type that is automatically selected at the time of power-on transition is green. The later source type and the source type subject to auto seek are displayed in orange, but these colors may be different colors. Further, instead of realizing a plurality of display modes with a plurality of colors, a plurality of duty ratios of light emitting diodes such as full lighting and blinking, a combination of the plurality of duty ratios and a plurality of colors, and the like may be realized. .

  In each of the above embodiments, when “FM1”, “FM2”, and “AM” are selected, the station that was previously listened to is automatically selected and the audio signal received from that station is automatically selected. You may make it output to. Also, “CD” and “MD” may be automatically started from the previously listened position by the resume function.

  In each of the above embodiments, the data structure in the state storage unit 63 is a structure in which the source type information is arranged in order as described above, but the data structure is not limited to this and may be another structure. For example, for each source type, the state of whether or not the source type is being selected and the state of whether or not the source type can be selected may be managed as a flag value, and the selection order of the source type may be stored. In this case, as the value of the selection order, for example, the value for the currently selected source type is 1, the value for the one that was selected before is 2, and the value that was selected n times ago Let the value for the thing be (n + 1). In this case, in the standby state, it is only necessary to select and display the latest selectable source type, and in the power-on state, the currently selected source type and the selectable source type can be selected based on the flag value. The appropriate source type may be displayed.

  Further, in each of the above embodiments, two types “FM1” and “FM2” are provided as source types for FM broadcasts. However, three or more source types are provided for broadcasts of the same modulation method. Also good.

  The present invention is applicable to, for example, an in-vehicle audio apparatus.

It is a front view which shows the audio apparatus which incorporated the source selection apparatus concerning Embodiment 1 of this invention. It is a block diagram which shows the structure of the audio apparatus of FIG. FIG. 2 is a front view illustrating details of a source selection UI unit in FIG. 1. FIG. 2 is a perspective view illustrating details of a source selection UI unit in FIG. 1. FIG. 2 is a circuit diagram illustrating details of an electrical configuration of a source selection UI unit and a driving circuit thereof in FIG. 1. 5 is a flowchart for explaining the operation of the audio device incorporating the source selection device according to the first embodiment. 6 is a diagram showing a control pattern of a light emitting diode by the MPU in Embodiment 1. FIG. FIG. 10 is a diagram for explaining an example of a display change of the source type in the source selection UI unit according to the source type switching operation and the ejection of the recording medium in the first embodiment. In Embodiment 2, it is a figure which shows the control pattern of the light emitting diode by MPU at the time of traffic information listening. In Embodiment 2, it is a figure which shows the example of the display change of the source classification in the source selection UI part from the start of traffic information to after the end when traffic information listening occurs in a power-on state. In Embodiment 2, it is a figure which shows the example of the display change of the source classification in the source selection UI part from the start of traffic information to after the end when traffic information listening occurs in the standby state. In Embodiment 3, it is a figure which shows the example of the display change of the source classification in a source selection UI part from before an auto seek operation | movement start to the end.

Explanation of symbols

1 Audio device 11 Source selection UI section (display means, source type display section, operation section)
11f Rotation operation part (operation part)
16 Tuning operation part (specific purpose operation part)
31 User interface (part of source selection device)
33 Control unit (part of source selection device)
51 CD playback unit (source device, audio signal output device, media playback device)
52 MD playback unit (source device, audio signal output device, media playback device)
53 Radio broadcast receiver (audio signal output device, source device, broadcast receiver)
62 MPU (status transition means, source type display control means, source type selection means, determination means)
63 State storage unit (storage means)
ENC rotary encoder (second operation detection means, rotation operation detection means)
SW push switch (first operation detecting means)

Claims (8)

Display means for displaying each of a plurality of source types by one or a plurality of audio signal output devices;
A state transition means for transitioning the operation state of the audio signal output device or the audio device incorporating the audio signal output device between a standby state and a power-on state;
Storage means for storing source type information indicating the source type selected in the power-on state;
In the standby state, and controls the display unit, among the plurality of source types, the source type indicated by the source type information stored in the storage means, Gu source type of the remaining audio signal output equipment Source type display control means for displaying separately ,
A source that selects one source type from the plurality of source types and selects the source type indicated by the source type information stored in the storage unit when the operation state shifts from the standby state to the power-on state. A source selection device comprising type selection means ,
One or more of the plurality of audio signal output apparatus, insertable der recording medium to play Oh Dio signal from the audio data read the audio data stored in the recording medium output media playback device And
The storage means stores source type information indicating a source type of the media playback device and source type information indicating a source type selected immediately before the source type,
The source type display control means, in the standby state, when detecting the ejection of the recording medium when the source over the scan type of the media playback device is displayed, with reference to our Keru source type information in the storage means, the Controlling the display means to stop displaying the source type of the media playback device and to display the source type selected immediately before the source type of the media playback device ;
A source selection device. When the source type information of the media playback device that has detected ejection of the recording medium in the standby state is stored in the storage unit, the source type selection unit shifts from the standby state to the power-on state by the state transition unit when, on the basis of the source type information it is memorize in the memory means, according to claim 1, characterized in that selecting a source type that has been selected to the previous source type of the media playback device source selection device. And Viewing means for displaying a plurality of source type according to one or more of the audio signal output device,
A state transition means for transitioning the operation state of the audio signal output device or the audio device incorporating the audio signal output device between a standby state and a power-on state;
Storage means for storing source type information indicating the source type selected in the power-on state;
In the standby state, and controls the display unit, among the plurality of source types, the source type indicated by the source type information stored in the storage means, Gu source type of the remaining audio signal output equipment Source type display control means for displaying separately,
A source that selects one source type from the plurality of source types and selects the source type indicated by the source type information stored in the storage unit when the operation state shifts from the standby state to the power-on state. Type selection means;
A source selection device comprising:
The source type display control means, a power-on state, to identify whether it is possible to output the audio signal for the source type of the plurality of audio signal output device, the display unit control to control, can output an audio signal such of the source type, source type which is selected by the source type selection means in the first aspect, the remaining source type is displayed in the second embodiment that differ from the aforementioned first embodiment, also the audio signal A source selection device that does not display a source type that cannot be output . And Viewing means for displaying a plurality of source type according to one or more of the audio signal output device,
A state transition means for transitioning the operation state of the audio signal output device or the audio device incorporating the audio signal output device between a standby state and a power-on state;
Storage means for storing source type information indicating the source type selected in the power-on state;
In the standby state, and controls the display unit, among the plurality of source types, the source type indicated by the source type information stored in the storage means, Gu source type of the remaining audio signal output equipment Source type display control means for displaying separately,
A source that selects one source type from the plurality of source types and selects the source type indicated by the source type information stored in the storage unit when the operation state shifts from the standby state to the power-on state. Type selection means;
A source selection device comprising:
The source type display control means, when the auto seek operation of the broadcast receiving apparatus of the plurality of audio signal output device controls the display device, the source over scan type as a target of automatic seek a power-on state A source selection apparatus, wherein the source type display mode is displayed in a mode different from both the source type display mode and the source type display mode in the standby state . A table that displays a plurality of source types by one or more audio signal output devices, respectively. Indicating means;
The audio signal output device or the audio incorporating the audio signal output device State transition means for transitioning the operating state of the device between a standby state and a power-on state;
Storage means for storing source type information indicating the source type selected in the power-on state;
In the standby state, the display means is controlled to store the storage among the plurality of source types. The source type indicated by the source type information stored in the means is set to the remaining audio signal output device. Source type display control means for displaying separately from the source type of the device,
Select one of the multiple source types, and the operating status is standby Source type stored in the storage means when transitioning from a state to a power-on state Source type selection means for selecting the source type indicated by the information;
A source selection method for a source selection device comprising:
One or more of the plurality of audio signal output devices can insert and remove the recording medium. Read the audio data stored on the recording medium and A media playback device that plays and outputs audio signals,
The storage means includes source type information indicating a source type of the media playback device and its A step for storing source type information indicating the source type selected immediately before the source type. And
When the source type display control means is in a standby state, the source of the media playback device is If the ejection of the recording medium is detected when the source type is displayed, the storage means The source type information of the media playback device is controlled by referring to the source type information Stops the display of the type, and the source selected immediately before the source type of the media playback device Displaying the type, and
A source selection method comprising:   The source type selection means detects ejection of the recording medium in the standby state. When the source type information of the media playback device is stored in the storage means, the state When the transition means shifts from the standby state to the power-on state, it is recorded in the storage means. Based on the stored source type information, it is selected before the source type of the media playback device. The source selection method according to claim 5, further comprising a step of selecting the selected source type. A table that displays a plurality of source types by one or more audio signal output devices, respectively. Indicating means;
The audio signal output device or the audio incorporating the audio signal output device State transition means for transitioning the operating state of the device between a standby state and a power-on state;
Storage means for storing source type information indicating the source type selected in the power-on state;
In the standby state, the display means is controlled to store the storage among the plurality of source types. The source type indicated by the source type information stored in the means is set to the remaining audio signal output device. Source type display control means for displaying separately from the source type of the device,
Select one of the multiple source types, and the operating status is standby Source type stored in the storage means when transitioning from a state to a power-on state Source type selection means for selecting the source type indicated by the information;
A source selection method for a source selection device comprising:
The source type display control means outputs the plurality of audio signals in a power-on state. Specify whether or not an audio signal can be output for the source type of the device, and control the display means. Of the source types that can output audio signals, the source type selection means The selected source type is the first mode, and the remaining source types are different from the first mode. And display the source type that cannot output audio signals. A source selection method comprising: no steps. A table that displays a plurality of source types by one or more audio signal output devices, respectively. Indicating means;
The audio signal output device or the audio incorporating the audio signal output device State transition means for transitioning the operating state of the device between a standby state and a power-on state;
Storage means for storing source type information indicating the source type selected in the power-on state;
In the standby state, the display means is controlled to store the storage among the plurality of source types. The source type indicated by the source type information stored in the means is set to the remaining audio signal output device. Source type display control means for displaying separately from the source type of the device,
Select one of the multiple source types, and the operating status is standby Source type stored in the storage means when transitioning from a state to a power-on state Source type selection means for selecting the source type indicated by the information;
A source selection method for a source selection device comprising:
The source type display control means receives broadcast from the plurality of audio signal output devices. During the auto seek operation of the device, the display means is controlled to perform the auto seek target. The source type is displayed in the power-on state and the source type in the standby state. It is provided with the step of displaying in a mode different from any of the display modes of types. Source selection method.

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