JP2015165262A - Input source selection device and control program for the same - Google Patents

Abstract

An input source selection device and a control for the input source selection device that make it easy for a user to select a specific input source desired even when used for video / audio equipment having a display unit with a narrow display screen and limited display capability Provide a program. An input source selection device includes at least a display unit that displays a first display corresponding to a currently selected input source that is display information generated by a control unit, and the control unit can be selected by an operation unit. A second display corresponding to the next candidate input source is displayed on the display unit, and the display position on the display unit of the second display is changed based on a predetermined relative relationship among the plurality of input sources. To display. [Selection] Figure 1

Description

  The present invention relates to an input source selection device and a control program therefor, and more particularly, to an input source selection device and a control program therefor that are used in video / audio equipment including a display unit with a narrow display screen and a limited display capability.

  In a video / audio device such as an audio device or a video device, an operation circuit that operates the device, a display circuit that displays a state of the device and an operation result in the operation circuit, an operation circuit, and a display circuit are provided. And a control circuit for controlling. In these devices, the screen size of the display circuit is limited, so that the control circuit will make it easier for the user to understand the operation of the video / audio device within the limited display capability range. It is necessary to control the display circuit.

  For example, in an electronic apparatus such as an audio device, a fluorescent display tube (hereinafter referred to as an FL display) is used as a display circuit (Patent Document 1). An FL display in an audio device is generally installed on the front panel of the audio device, and a list of contents stored in a CD, DVD, MD, or the like inserted into the audio apparatus or externally connected, and a playback state of the content ( Playback counter, song name, etc.). In particular, the FL display in the audio device is merely a display of character information of one to two lines as shown in Patent Document 1, and design considerations are necessary to improve the visibility in a user-friendly manner. I need it.

  Further, when the video / audio device has a function as an input selector for selecting a plurality of input sources such as CD, DVD, MD such as an amplifier device, for example, the input source to be selected for the display circuit is selected. The name (for example, “CD, DVD, MD, LINE1, LINE2”) or the input terminal name is displayed, and the input source device to be played back is displayed to the user (for example, Patent Documents 2 to 4). . However, when the display circuit is a dot matrix type FL display as shown in Patent Document 1, for example, the display circuit is configured to have a maximum of two lines and is limited to a level that can display 14 characters in one line. As a result, special design considerations are required for the display method when selecting an input source.

  In particular, in an audio device that connects an extremely large number of input sources such as an AV receiver, if an LED display corresponding to one input source or terminal is further provided on the front panel, the input source is displayed on a limited FL display. There is a merit that there is no need. However, if an LED display corresponding to a large number of input sources is provided, the circuit configuration and the mechanical configuration become more complicated, the manufacturing cost increases, and as a result, it is expensive to provide to the user. There is a demerit that.

  On the other hand, if the input source is displayed only on the FL display, the currently selected input source becomes easy to visually recognize, but it is difficult to change the input selector next and select the input source. There is a problem of becoming. For example, when it is assumed that the corresponding input source changes in turn when the dial as the operation circuit is rotated, the next selectable input source rotates the dial to finish the selection. This is because the problem of not knowing until it occurs. A user who wants to select a particular desired input source can hardly predict the next input source displayed when the dial is rotated. As a result, the operation of selecting an input source takes time, and the user feels dissatisfied when the operation is difficult.

JP 2013-152327 A JP 2013-123151 A Japanese Patent No. 5401932 Japanese Patent No. 4335842

  The present invention has been made to solve the above-described problems of the prior art, and an object thereof is related to an input source selection device and a control program thereof, and particularly, a display with a narrow display screen and a limited display capability. It is an object to provide an input source selection device and a control program therefor that make it easy for a user to select a specific input source desired even when used in a video / audio device including a unit.

  An input source selection device according to the present invention selects an input unit to which a plurality of input sources for outputting a video signal or an audio signal are connected, and selects at least one input source input to the input unit to output a video signal or an audio signal. An input source selection unit to output, a control unit that controls the operation of the input source selection unit, an operation unit that inputs user operations to the control unit, and a currently selected input source that is display information generated by the control unit A display unit that displays a corresponding first display, and the control unit displays a second display corresponding to an input source of a next candidate that can be selected by the operation unit on the display unit, and the second display The display position on the display unit is changed and displayed based on a predetermined relative relationship among a plurality of input sources.

  Preferably, in the input source selection device of the present invention, when the operation unit detects a user operation to change the input source selected by the input source selection unit, the control unit displays the second display simultaneously with the first display. Displayed in the section.

  Preferably, in the input source selection device according to the present invention, the display unit includes a fluorescent display tube (FL tube) capable of displaying character information, and the second display has a name corresponding to each of the plurality of input sources. The control unit displays at least the first character, and the control unit displays the display position on the display unit of the second display by changing the position of the first character displayed on the fluorescent display tube based on the relative relationship.

  Preferably, in the input source selection device of the present invention, the first display or the second display displayed on the fluorescent display tube is an abbreviated character in which a name corresponding to each of the plurality of input sources is shortened. .

  Preferably, the control program of the present invention controls the input source selection device.

  The operation of the present invention will be described below.

  An input source selection device according to the present invention selects an input unit to which a plurality of input sources for outputting a video signal or an audio signal are connected, and selects at least one input source input to the input unit to output a video signal or an audio signal. An input source selection unit to output, a control unit that controls the operation of the input source selection unit, an operation unit that inputs user operations to the control unit, and a currently selected input source that is display information generated by the control unit A display unit that displays a corresponding first display. The control program operates in the control unit and controls the operation of the input source selection device.

  Furthermore, the control unit of the input source selection device displays a second display corresponding to the next candidate input source that can be selected by the operation unit on the display unit, and sets the display position on the display unit of the second display to a plurality of positions. The display is changed based on a predetermined relative relationship between the input sources. That is, the control unit of the input source selection device not only displays the first display corresponding to the currently selected input source on the display unit, but also the second corresponding to the next candidate input source that can be selected by the operation unit. The display is displayed on the display unit. Therefore, since the user can predict the input source that can be selected by changing the input selector next time by the second display, the operation of selecting the input source becomes smooth and the operation time can be shortened.

  Here, in the second display corresponding to the next candidate input source that can be selected by the operation unit, the display position on the display unit is changed based on a predetermined relative relationship among the plurality of input sources. indicate. The predetermined relative relationship among the plurality of input sources is, for example, a number indicating the order of 1 to N (integer) attached to the input source such as an input number, and this input number k (1 ≦ k). ≦ N), the display position in the display section of the second display may be changed. For example, when the input number k corresponding to the input source is small, the second display on the display unit is to the left, and when the input number k is large and close to N, the second display on the display unit is to the right, and the input number When k is close to N / 2, the display method is such that the second display on the display unit is closer to the center.

  Therefore, in the display unit of the input source selection device, when the operation unit is operated so as to change the input source in order, a plurality of second displays corresponding to selectable next candidate input sources are displayed in the display unit. Are displayed so as to move based on a predetermined relative relationship between the input sources. For example, when the corresponding input source is sequentially changed by rotating a dial as an operation circuit, the second display on the display unit moves from the left side to the right side as the input number k increases. As a result, the user can visualize and recognize the relative relationship of multiple input sources with respect to the next candidate input source, so that the operation for selecting the input source can be performed intuitively and the operation time is shortened. There is an advantage that you can.

  Preferably, in the input source selection device, when the operation unit detects a user operation to change the input source selected by the input source selection unit, the control unit displays the second display simultaneously with the first display. May be displayed. Unless the user performs an operation of changing the input source, the second display, which is a selectable next candidate, is not displayed on the display unit, which is advantageous in that the display is not complicated. Further, it is easier to understand where the input source corresponding to the displayed first display is located in a predetermined relative relationship among the plurality of input sources by the second display whose display position changes. , The user becomes easy to operate to select the input source.

  In the input source selection device of the present invention, when the display unit includes a fluorescent display tube (FL tube) capable of displaying character information, the second display has names corresponding to the plurality of input sources. Any character information including at least the first character may be used. The control unit of the input source selection device displays the display position on the display unit of the second display by changing the position of the first character displayed on the fluorescent display tube based on the relative relationship. Since the fluorescent display tube can display a plurality of character information even if the display capability is limited, the first display or the second display displayed on the fluorescent display tube shortens the name corresponding to each of the plurality of input sources. Therefore, a practical input source selection device can be realized.

  As a result, the second display corresponding to the selectable next candidate input source is displayed in the display unit so as to move based on a predetermined relative relationship among the plurality of input sources. . For example, even if the input source is displayed only on the FL display, the start position of the character display of the second display on the FL display (corresponding to the first character, (the position of “C” in the case of “CD”)) May be changed according to the input number k (1 ≦ k ≦ N). Therefore, an increase in manufacturing cost can be suppressed without providing LED displays corresponding to a large number of input sources. In addition, since the user can predict the input source that can be selected by changing the input selector next time from the second display on the FL display, the operation of selecting the input source becomes smooth and the operation time can be shortened.

  The input source selection device and the control program thereof according to the present invention select a specific input source desired by the user even when used for video / audio equipment having a display unit with a narrow display screen and a limited display capability. It becomes easy to do.

1 is a diagram illustrating an AV amplifier 1 according to a preferred embodiment of the present invention. FIG. (Example 1) It is a figure explaining the display control by the FL display 23 in AV amplifier 1 by preferable embodiment of this invention. (Example 1) It is a figure explaining the correlation between the several input sources in AV amplifier 1 by preferable embodiment of this invention. (Example 1) It is a figure explaining the display control by the FL display 23 in AV amplifier 1 by preferable embodiment of this invention. (Example 1) It is a flowchart explaining the operation control in the microcomputer 21 of AV amplifier 1 by preferable embodiment of this invention. (Example 1)

  Hereinafter, although the input source selection apparatus by the preferable embodiment of this invention and its control program are demonstrated, this invention is not limited to these embodiment.

  FIG. 1 is a block diagram illustrating an AV amplifier 1 which is an input source selection device according to a preferred embodiment of the present invention. The AV amplifier 1 has a selector function of connecting a plurality of audio devices or video devices and selecting them as input sources. In the present embodiment, specifically, the input source device is a CD player 2 that is a content reproduction device, a DVD player 3, and a portable DA (Digital Audio) player 4. These devices constitute an audio reproduction system and are connected to each other by connection lines 5 to 7 for transmitting audio signals / data. In addition, illustration and description of a part of the structure unnecessary for the description, an internal structure, and the like are omitted.

  The CD player 2 is a disc player that reproduces content recorded on a disc recording medium called CD (Compact Disc) (not shown), and outputs content audio as an audio signal. The CD player 2 includes an analog audio signal output terminal 2a, and outputs content audio to the AV amplifier 1 as an analog audio signal. A connection line 5 that connects the AV amplifier 1 and the CD player 2 is a coaxial pin cable that transmits an analog audio signal.

  The DVD player 3 is a disc player that reproduces content recorded on a disc recording medium called DVD (Digital Versatile Disc) (not shown), and outputs content audio as an audio signal. The DVD player 3 includes a digital audio signal output terminal 3a, and outputs content audio to the AV amplifier 1 as digital audio signal data. A connection line 6 that connects the AV amplifier 1 and the DVD player 3 is an optical cable that transmits a digital audio signal. Note that the description and illustration regarding the video signals of the AV amplifier 1 and the DVD player 3 are omitted.

  The portable DA player 4 is a memory type audio player that reproduces content recorded on a memory recording medium (not shown), and outputs content audio as an audio signal. The portable DA player 4 includes a USB (Universal Serial Bus) terminal 4a as a data input / output terminal, and outputs content audio to the AV amplifier 1 as digital audio signal data. A connection line 7 that connects the AV amplifier 1 and the portable DA player 4 is a USB cable that transmits digital data.

  The AV amplifier 1 includes an amplifier circuit 19 to be described later, and amplifies and outputs an audio signal from another device selected as an input source. The AV amplifier 1 includes a digital / analog conversion circuit unit 16 to be described later, and converts an input digital audio signal into analog audio. That is, the AV amplifier 1 selects and amplifies an audio signal input from a source device such as a CD player 2, a DVD player 3, a portable DA player 4, and another audio reproduction device (not shown), The audio of the content is reproduced by outputting to a speaker (not shown) or a headphone (not shown). Since the AV amplifier 1 includes a tuner circuit 11 described later corresponding to FM broadcast and AM broadcast, the FM broadcast or AM broadcast can be selected as an input source.

  In the present embodiment, the analog audio signal output terminal 2 a of the CD player 2 is connected to one of the plurality of analog audio signal input terminals 12 included in the AV amplifier 1 by the connection line 5. Further, the digital audio signal output terminal 3 a of the DVD player 3 is connected to one of the plurality of digital audio signal input terminals 13 included in the AV amplifier 1 through the connection line 6. In addition, the USB terminal 4 a of the portable DA player 4 is connected to one of the plurality of USB terminals 14 included in the AV amplifier 1 through the connection line 7.

  If the audio signal connection lines 5 to 7 are any of coaxial cables that transmit other analog audio signals, coaxial cables that transmit digital audio signals, optical cables, USB cables, or HDMI (registered trademark). The digital audio signal may be a stereo signal composed of a monaural signal, a left audio signal, and a right audio signal, or a multichannel signal composed of a set of three or more audio signals. The analog audio signal connection line 5 is preferably a coaxial cable for transmitting the analog audio signal, and may be a balanced output line. Note that the AV amplifier 1 and other input source devices that constitute the audio reproduction system may be connected by a control signal line (not shown). In this case, the system can be linked.

  The AV amplifier 1 includes a tuner circuit 11 corresponding to FM broadcast and AM broadcast, a plurality of analog audio signal input terminals 12 to which analog audio signals are input, and a plurality of digital audio signal input terminals 13 to which digital audio signals are input. And a USB terminal 14 to which a USB connection device is connected. The AV amplifier 1 includes a digital audio receiver 15 to which the digital audio signal input terminal 13 and the USB terminal 14 are connected, a digital / analog converter circuit 16 that converts an output signal of the digital audio receiver 15 into an analog audio signal, and the like. The analog audio receiver 17 to which the analog audio signal input terminal 12 is connected, the input signal from the digital / analog converter circuit 16, the input signal from the analog audio receiver 17 and the input signal from the tuner circuit 11 are switched. An analog signal selector 18 for output, an amplifier circuit 19 for amplifying an output signal from the analog signal selector 18, and a speaker terminal 20 connected to the output terminal of the amplifier circuit 19 are provided.

  The AV amplifier 1 includes a microcomputer 21 that controls the operation of the AV amplifier 1, an operation circuit 22 that inputs a user operation to the microcomputer 21, and a display circuit 23 that displays display information generated by the microcomputer 21. The microcomputer 21 receives an operation signal from a remote controller (not shown) or an operation input circuit 22 and performs an operation of the input source selection unit 10 to which an analog audio signal or a digital audio signal output from each source device is input. Control. As shown in FIG. 1, the input source selector 10 of the AV amplifier 1 includes an analog audio signal input terminal 12, a digital audio signal input terminal 13, a USB terminal 14, a digital audio receiver 15, and a digital audio signal. / Analog conversion circuit 16, analog audio receiver 17, and analog signal selector 18.

  The input source selection unit 10 of the AV amplifier 1 functions as an input selector of a plurality of input source devices connected under control of the microcomputer 21. Therefore, for example, the microcomputer 21 can recognize the input terminal to which the CD player 2 is connected among the plurality of analog audio signal input terminals 12 as the input terminal “CD”. The analog audio receiving unit 17 selects a terminal to which one (or a set) of analog audio signals are input from the plurality of analog audio signal input terminals 12 and outputs the selected terminal to the analog signal selector 18.

  Similarly, the microcomputer 21 can recognize the input terminal to which the DVD player 3 is connected among the plurality of digital audio signal input terminals 13 as the input terminal “DVD”. Similarly, the microcomputer 21 can recognize the input terminal to which the portable DA player 4 is connected among the plurality of USB terminals 14 as the input terminal “USB”. The digital audio receiving unit 15 selects one (or a set) of digital audio signals input from the plurality of digital audio signal input terminals 13 and the USB terminals 14 and outputs the selected terminal to the digital / analog conversion circuit 16. To do. The digital / analog conversion circuit 16 converts the digital audio signal into an analog audio signal and outputs the analog audio signal to the analog signal selector 18.

  FIG. 2 is a diagram for explaining display control in the display circuit 23 of the AV amplifier 1. The display circuit 23 in this embodiment is a fluorescent display tube (FL) capable of displaying characters in two rows (y1, y2) and 14 columns (x1 to x14) as shown in FIG. 2 (a) or FIG. 2 (b). Display). The input source selection unit 10 of the AV amplifier 1 controlled by the microcomputer 21 displays the operation on the FL display 23. The FL display 23 displays the state of the AV amplifier 1 and the result of operation in the operation circuit 22 as display information generated by the microcomputer 21. That is, the FL display 23 displays the operation of the input source selection unit 10 of the AV amplifier 1 and the input source to be selected.

  For example, FIG. 2A is a diagram for explaining the display on the FL display 23 when the AV amplifier 1 is operating normally. The input display corresponding to the DVD player 3 which is the input source currently selected by the input source selection unit 10 is in the range of x5 to x10, which is the central part of the display unit Da corresponding to the first line (y1) of the FL display 23. [DVD / BD] is displayed. Further, a surround mode which is an audio process applied to the current input source [DVD / BD] is in a range of x5 to x10 which is a central portion of the display unit Db corresponding to the second row (y2) of the FL display 23. A display [Stereo] meaning “stereo” is displayed. In addition to the surround mode display as described above, other display information may be displayed on the display unit Db of the FL display 23. For example, when the input source is FM radio, the display unit Db of the FL display 23 may display the frequency of the corresponding broadcast signal or the name of the broadcast station.

  Further, FIG. 2B is a diagram for explaining display on the FL display 23 when the user operates an input selector dial (not shown) which is the operation input circuit 22 of the AV amplifier 1. The input display corresponding to the DVD player 3 which is the input source currently selected by the input source selection unit 10 is in the range of x5 to x10, which is the central part of the display unit Da corresponding to the first line (y1) of the FL display 23. [DVD / BD] is displayed. Further, in the range of x2 to x5 that is the left side portion of the display portion Db corresponding to the second row (y2) of the FL display 23, the next candidate that can be selected as the next input source instead of the current input source is “ A display [USB] meaning “portable DA player 4” is displayed. At this time, the display [Stereo] indicating the previous surround mode “stereo” is not displayed on the display portion Db of the FL display 23.

  That is, when the user operates the input selector dial so as to select the input source, the microcomputer 21 of the AV amplifier 1 displays the first display corresponding to the input source currently selected on the display unit Da of the FL display 23. In addition to displaying [DVD / BD], the display unit Db of the FL display 23 displays a second display [USB] corresponding to the next candidate input source that can be selected by the input selector dial. Therefore, since the user can predict the input source that can be selected by changing the input selector dial next by the second display appearing on the display portion Db of the FL display 23, the operation of selecting the input source becomes smooth and the operation time is also shortened. Can be shortened.

  FIG. 3 is a diagram for explaining a correlation between a plurality of input sources in the AV amplifier 1. FIG. 4 is a diagram for explaining display control on the FL display 23 in the AV amplifier 1. Further, FIG. 5 is a flowchart for explaining operation control in the microcomputer 21 of the AV amplifier 1. Hereinafter, the display control of the FL display 23 executed by the microcomputer 21 of the AV amplifier 1 when the user selects the input source by changing the input selector dial will be described.

  As shown in the table of FIG. 3, the AV amplifier 1 of this embodiment includes a tuner circuit 11 or input terminals (12, 13, 14) corresponding to a total of 12 input sources. The input source described in the input number [Input No.] in the table of FIG. 3 corresponds to the display name of the first display displayed on the display unit Da of the FL display 23. The display name of the second display shown in the table of FIG. 3 is an abbreviated name of the input source displayed on the display unit Db of the FL display 23, and character information including at least the first character of the name corresponding to each of the input sources. It is. The short name should be as short as 3 characters. The display name of the second display designates the start position (x1 to x12) of the second character display (corresponding to the first character) on the FL display. In this embodiment, as the [Input No.] increases, the character display start position of the second display is associated with the left side (x1) changing from the right side (x12).

  As shown in FIGS. 2 and 4, when the input selector dial is changed and the input source is selected, the AV amplifier 1 corresponds to the next candidate input source that can be selected on the display unit Db of the FL display 23. The second display is changed and displayed based on a predetermined relative relationship among the plurality of input sources. Therefore, on the display unit Db of the FL display 23 of the AV amplifier 1, when the input selector dial is operated so as to change the input source in order, the second display corresponding to the selectable next candidate input source is displayed. The part is displayed so as to move based on a predetermined relative relationship among a plurality of input sources.

  For example, as shown in FIG. 2B, when the second display [USB] corresponding to the next candidate input source selectable by the input selector dial is displayed, the display unit Db of the FL display 23 displays the second display [USB]. 2. Display the start position of the first character [U] of display [USB] at x2 on the left side. As shown in FIG. 4A, when the second display [CD] corresponding to the input source of the next candidate is displayed, the top of the second display [CD] is displayed on the display unit Db of the FL display 23. The start position of the character [C] is displayed at x7 which is substantially near the center. As shown in FIG. 4B, when the second display [DVD] corresponding to the input source of the next candidate is displayed, the top of the second display [DVD] is displayed on the display unit Db of the FL display 23. The start position of the character [D] is displayed at x12 on the right side.

  Therefore, when the user operates the input selector dial to change the input source in the order of FIG. 2 (b) → FIG. 4 (a) → FIG. 4 (b), the display unit Db of the FL display 23 The second display corresponding to the candidate input source moves from the left side to the right side. When the user operates the input selector dial in the reverse direction, the second display corresponding to the next candidate input source moves from the right side to the left side. If the direction of operation for rotating the input selector dial and the movement direction of the second display on the display unit Db of the FL display 23 are made to coincide, the user can make a relative relationship between the plurality of input sources with respect to the next candidate input source. Can be visualized and recognized. As a result, the user can intuitively perform the operation of selecting the input source again, and there is an advantage that the operation time can be shortened. Note that the input source, its short name, and its start position are not limited to those shown in FIGS.

  When there is an input operation on the input selector dial, the microcomputer 21 determines the operation direction, determines the display contents of the next candidate and the display position from FIG. 3, and performs display. The operation control of the microcomputer 21 will be described along the flowchart of FIG. The microcomputer 21 sets “next candidate display number: i” of the second display as an initial value (S001). If it is determined that the user has not operated the input selector dial (S002: No), it is further determined whether or not a certain period of time during which no operation has been performed (S003). If not (S003: No) or if a certain amount of time has not been operated (S003: Yes), the display control is performed so that the display unit Db of the FL display 23 is returned to the normal display (S004).

  When the microcomputer 21 detects that the user has operated the input selector dial (S002: Yes), it next detects whether or not the operation direction of the input selector dial is rightward (S005). Whether the input selector dial is composed of a rotary encoder or a plurality of switches, the operation direction can be easily detected. When the operation direction of the input selector dial is rightward (S005: Yes), the next candidate display number i is incremented (if i> 12, i = 1 is set) (S006). On the other hand, when the operation direction of the input selector dial is the opposite left direction (S005: No), the next candidate display number i is decremented (if i <0, i = 12 is set) (S007). ). When the next candidate display number i is determined, the microcomputer 21 displays a shortened display corresponding to the next candidate display number i at a designated position on the display unit Db of the FL display 23 (S008). In the case of the present embodiment, the direction of operation for rotating the input selector dial matches the direction of movement of the second display on the display unit Db of the FL display 23.

  In addition, when the microcomputer 21 displays the first display corresponding to the currently selected input source on the display unit Da of the FL display 23, similarly to the next candidate that is the second display displayed on the display unit Db, A shortened display may be used. The display unit Da is simply a conventional input source display or a shortened display, and since the display position is not substantially changed, the display is not switched to a dedicated display when the input source is selected, and the operating user is confused. There is nothing. Further, when the microcomputer 21 displays the next candidate input source on the display unit Db of the FL display 23, the microcomputer 21 displays a Dimmer or the like of the FL display 23 on the display unit Da on which the currently selected input source is displayed. The brightness may be reduced to make it easier to understand that the next candidate is displayed.

  Thus, on the FL display 23 of the AV amplifier 1, the second display corresponding to the selectable next candidate input source is based on a predetermined relative relationship among the plurality of input sources in the display unit Db. Will be displayed to move. Even if the input source is displayed only on the FL display 23, the display position of the next candidate of the input source is displayed at the offset position, so that even when the input selector dial is operated at high speed, the current position of the input selector dial is It becomes relatively easy to understand. This input source display method has a cost advantage since there is no significant change in the conventional software structure or addition of hardware. That is, an increase in manufacturing cost can be suppressed without providing LED displays corresponding to a large number of input sources.

  In the above embodiment, the start position of the character display, which is the shortened display of the second display on the FL display, is changed in correspondence with the “start position of the character display of the second display” different from the “input number”. Of course, it may be changed in accordance with the input number, and any display may be used as long as it is changed based on another predetermined relative relationship among a plurality of input sources. Further, the change in the position of the second display on the FL display is not limited to the horizontal movement as in the above embodiment, but may be the vertical direction or the rotation direction.

  As shown in FIGS. 2 and 4, the AV amplifier 1 according to the present embodiment has a FL display 23 capable of displaying characters as a display circuit. The display circuit is, for example, a small liquid crystal display. Other display devices with such a limited display area and display content may be used. The microcomputer 21 as the input source selection device displays a second display corresponding to the selectable next candidate input source on the display device, and displays the display position on the display device of the second display among the plurality of input sources. Any display may be used as long as it is changed based on the predetermined relative relationship. As a second display corresponding to the next candidate input source that can be selected, the shortened display may be replaced with an icon or a symbol, and the change of the relative relationship may also change the display position of the icon or the symbol within the display device. It may be realized based on other adoptable methods such as changing the display color or changing the display color.

  Further, the AV amplifier 1 of the above embodiment is an apparatus including the input source selection unit 10 and the amplification circuit 19, but only the input source selection unit 10, the microcomputer 21, the operation circuit 22, and the display circuit 23 are provided. An input source selection device may be provided. Further, the AV amplifier 1 of the above embodiment is an amplifying device including the input source selection unit 10 that uses an audio signal as an input signal, but may include a selector that uses a video signal as an input signal. Of course, the AV amplifier 1 may include other content playback devices such as a CD player 2, a DVD player 3, or a tuner, and the input source selection unit 10 may be embedded in an electronic computer such as a personal computer. Good. In addition, the recording medium on which the content is recorded may be included in an external device that can be connected to the recording medium playback device by wired communication or wireless communication such as HDMI (registered trademark) or USB, and uses cloud computing. You may do. Further, the microcomputer 21 that is the control unit of the AV amplifier 1 of the above embodiment may be one or a plurality of CPUs or DSPs, and may be an arithmetic circuit that performs control processing and audio signal processing.

  The input source selection device of the present invention can be applied not only to a stereo device that reproduces content including a digital audio signal or a multi-channel surround sound reproduction device, but also to a video / audio device such as a display.

DESCRIPTION OF SYMBOLS 1 AV amplifier 2 CD player 3 DVD player 4 Portable DA player 5, 6, 7 Connection line 10 Input source selection part 11 Tuner part 12 Analog audio | voice signal input terminal 13 Digital audio | voice signal input terminal 14 USB terminal 15 Digital audio | voice receiving part 16 Digital / Analog conversion circuit 17 Analog signal receiver 18 Analog signal selector 19 Amplifier circuit 20 Speaker terminal 21 Microcomputer 22 Operation circuit 23 Display circuit

Claims (5)

An input unit to which a plurality of input sources that output video signals or audio signals are connected; and an input source selection unit that selects at least one input source input to the input unit and outputs a video signal or audio signal; A control unit that controls the operation of the input source selection unit, an operation unit that inputs a user operation to the control unit, and a display information generated by the control unit that corresponds to the currently selected input source. A display unit that displays one display,
The control unit displays a second display corresponding to the input source of the next candidate that can be selected by the operation unit on the display unit, and sets the display position of the second display on the display unit to a plurality of the display units. Change and display based on a predetermined relative relationship between input sources,
Input source selection device. When the operation unit detects a user operation to change the input source selected by the input source selection unit, the control unit displays the second display on the display unit simultaneously with the first display.
The input source selection device according to claim 1. The display unit includes a fluorescent display tube capable of displaying character information, the second display includes at least a first character of a name corresponding to each of the plurality of input sources, and the control unit includes the second display. The display position of the display unit is displayed by changing the position of the first character displayed on the fluorescent display tube based on the relative relationship.
The input source selection device according to claim 1 or 2. The first display or the second display displayed on the fluorescent display tube is an abbreviated character that expresses the name corresponding to each of the plurality of input sources by abbreviation.
The input source selection device according to claim 3.   The control program of the input source selection apparatus in any one of Claim 1 to 4.