JPH0810549B2 - In-vehicle audio equipment display device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for an on-vehicle audio device in which a cassette deck and another audio device, for example, a radio receiver or a CD player, a CD changer, etc. are combined.

2. Description of the Related Art Conventionally, a vehicle-mounted audio device in which a cassette deck and a radio receiver are combined has been known. In this type of conventional vehicle-mounted audio equipment, operation buttons for controlling each audio equipment and various display sections are arranged on the front surface of the equipment body. For example, in a conventional composite audio device in which a radio and a cassette deck are combined, operation buttons and various indicators for controlling the radio receiver or the cassette deck are arranged on the front surface of the apparatus body. For example, a conventional device of this type includes a signal level indicator having two rows of light emitting diodes arranged, a tape running direction or a fast forward (FF) direction of a cassette deck,
There were multiple indicators such as those that show the rewind (REW) direction.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, like the conventional vehicle-mounted audio equipment,
When a plurality of dedicated indicators such as a dedicated indicator for displaying the signal level and a dedicated indicator for displaying the operation status of the cassette deck are provided, each indicator becomes small and the displayed contents are difficult to see. In order to solve such problems,
The segment type display for frequency display is used to display the operating status of the cassette deck (for example, letters such as FF and REW), and the tape running direction of the magnetic tape is dynamically displayed on the segment type display. A display device that can be used has been proposed (Jitsuko Sho 61-31432). However, even when the segment type display is also used for other display in this way, there is a problem that the display contents are difficult to see because the segment display itself is small.

The present invention solves the above-mentioned conventional problems, and provides a display device for an in-vehicle audio device in which the signal level display and the operation status display of the cassette deck are easy to see even though the display space is limited.

Means for Solving the Problems The present invention, in order to achieve the above object, a display plate arranged on the front surface of the apparatus body, a plurality of switches composed of transparent electrodes arranged on the front surface of the display plate, and A plurality of display patterns for displaying the signal level annularly arranged on the outer peripheral portion of the display plate, and a display control means for sequentially blinking the plurality of display patterns clockwise or counterclockwise according to the tape running direction of the cassette deck. It is characterized by having.

The present invention has the above-mentioned configuration, and displays the signal level by a plurality of display patterns arranged in an annular shape on the outer peripheral portion of the display board, and makes the tape running of the cassette deck by sequentially blinking the display patterns. The direction can be displayed.

Embodiment FIG. 1 to FIG. 3 show a front view of a vehicle-mounted composite audio device (composite audio device of a radio receiver, a cassette deck, and a CD autochanger) in an embodiment of the present invention. 1 to 3, reference numeral 1 denotes an apparatus main body, and the front surface of the apparatus main body 1 is roughly divided into an upper section and a lower section. In the upper part, 2 is a power switch, 3 is a dust cover that is openably and closably provided in the cassette insertion port, 4 is an eject button for ejecting the cassette, 5 is a loudness control button, 6 is a time call button, and 7 is an attenuator. The dimmer control buttons 8A and 8B are up and down buttons for controlling volume, volume balance, and the like. The lower part of the front surface of the apparatus main body 1 is composed of a liquid crystal display plate and a switch group including transparent electrodes arranged on the front surface of the liquid crystal display plate.
The display of the lower part differs depending on the mode as shown in FIGS. Figure 1 shows a display example in radio mode,
FIG. 2 shows a display example in the cassette mode, and FIG. 3 shows a display example in the CD mode. As is clear from FIGS. 1 to 3, the liquid crystal display panel is divided into a plurality of areas, and one or a plurality of function display patterns are formed in each area. For example, (FM), (PR
G) and () function display patterns are formed. 1 to 3, reference numeral 9 denotes a radio selection button, and this radio selection button 9 is used when a radio broadcast is received during a cassette performance. 10 is a CD selection button, and this CD selection button
10 is used when switching to CD playing while receiving a radio broadcast or playing a cassette. Reference numerals 11 to 23 denote function switching units, respectively. Each of the function switching units 11 to 23 includes a function display unit formed of a liquid crystal display panel and a switch formed of a transparent electrode. As shown in FIGS. 1 to 3, the function display of each function switching unit 11 to 23 is different in the radio mode, the cassette mode, and the CD mode. FIG. 4 shows the switches arranged in the lower part by circles, and a plurality of switches composed of transparent electrodes are arranged on the front surface of the liquid crystal display panel. Reference numeral 24 denotes a display unit.The display unit 24 performs reception frequency display, frequency band display, channel number display, stereo presence / absence display, loudness presence / absence display, etc. in the radio mode, and deck status display in the cassette mode, Playback surface display, song number display, etc.
The number of tracks and the elapsed time are displayed. 25 is an adjustment mode switching unit that switches the adjustment modes of volume, bass, treble, balance, and fader, and displays these adjustment modes.By operating the switches of this adjustment mode switching unit 25, the adjustment modes can be switched sequentially. , The changed adjustment mode display flashes. By operating the adjustment mode switching unit 25 and the up / down buttons 8A and 8B, the volume and the like can be adjusted. For example, with the volume control mode switched, the up and down buttons 8A, 8B
When is operated, the volume is increased or decreased.

Next, operations in the radio mode, the cassette mode, and the CD mode will be described.

(Radio mode) In the radio mode shown in FIG.
Or, by operating 12, the mode is switched to the FM broadcast receiving mode or the AM broadcast receiving mode. Operating the function switching unit 14 or 16 changes the receiving station. Further, by operating the function switching unit 13, it is possible to reduce noise when receiving an FM broadcast. Function switching unit
When you operate 15, it switches to the automatic preset mode,
Six broadcast stations with strong radio waves are automatically assigned to the preset buttons 18 to 23. By operating the preset buttons 18-23,
A broadcast station stored in advance in each of the preset buttons 18 to 23 is selected.

(Cassette Mode) When the cassette is inserted into the cassette insertion slot in the radio mode shown in FIG. 1, the cassette mode is changed to that shown in FIG. In this cassette mode, the function switching unit 11
To change the playing surface of the tape, to operate the function switching unit 12, to pause the tape performance, and to operate the function switching unit 13, to start each song recorded on the tape. Can be played sequentially,
By operating the function switching units 14 to 16, fast rewind (REW) of the tape, stop of fast forward and fast reverse, and fast forward (FF) of the tape can be performed. Furthermore, function switching unit 21
By manipulating .about.23, it is possible to search for the beginning of a song, repeatedly play a song currently being played, skip a silent portion of a tape, and the like.

(CD mode) When the CD switch button 10 is operated in the radio mode or the cassette mode, the mode is changed to the CD mode shown in FIG. The CD changer of this embodiment is for sequentially taking out 12 CDs, setting them in a CD player, and playing a CD.When the function switching unit 11 is operated, the playing of the CD is started, and when the function switching unit 12 is operated, , CD playing is stopped. Also,
By operating the function switching unit 13, it is possible to sequentially play the beginning portions of a plurality of songs recorded on a CD. Also, when the function switching unit 14 or 16 is operated, the cue of the previous song or the next song is performed, and when the function switching unit 15 is operated,
CD playing can be stopped. When the function switching unit 18 is operated, it is possible to switch between the disc / track display and the elapsed time display on the display unit 24.
By operating 1,22, you can change the disc to be played.

In FIG. 1 to FIG. 3, reference numeral 39 denotes a plurality of display patterns formed in a ring shape on the outer peripheral portion of the liquid crystal display plate arranged on the lower front side of the apparatus main body 1, and reproduced by this display pattern 39. It is possible to display the level of the left and right signals and the traveling direction of the magnetic tape.

FIG. 5 is a block diagram of this embodiment. In FIG. 5, reference numeral 26 denotes a CD changer, 27 denotes a cassette deck, and 28 denotes an electronic tuner. Controlled by 29.
Reference numeral 30 designates a switch and an eject button 4, a loudness control button 5, a time call button 6, an attenuator, a dimmer control button 7, and an operation section composed of switches driven by up and down buttons 8A and 8B, Reference numeral 31 is a display unit composed of a liquid crystal display plate arranged on the lower stage of the front of the apparatus main body 1,
The display unit 31 is driven by a driver 32. Reference numeral 33 denotes a switching circuit. The switching circuit 33 is switched by a signal output from the control unit 29, and inputs a reproduction signal from the CD changer 26, the cassette deck 27, or the electronic tuner 28 to the electronic volume 34. The electronic volume 34 is a control unit
Controlled by the control signal from 29, volume (VOL) control, bass / treble adjustment (BASS) (TRE), left and right speaker volume adjustment (BAL), front and rear speaker volume adjustment (FADE
R). Reference numerals 35 and 36 denote power amplifiers, 37A and 37B denote speakers disposed on the front left and right in the vehicle interior, and 38A and 38B denote speakers disposed on the rear left and right in the vehicle interior.

Next, the configuration of the control unit 29 will be described. In FIG. 5, reference numeral 40 denotes a key processing means, and this key processing means 40
Performs determination of various switches operated by the operation unit 30, changes or updates data stored in the storage unit 41, and sends determination results to the timing control unit. The timing control means 42 determines the timing of various operations according to the key discrimination result, and controls the storage control means 43, the device selection control means 44, the display control means 45, and the device control means 46.
The storage control means 43 writes data to the storage means 41,
Alternatively, an address for reading data is specified. The storage means 41 includes data for controlling the electronic tuner 28, data for controlling the CD changer 26, data for controlling the cassette deck 27, and an electronic volume.
Data for controlling 34, data for controlling the driver 32, and the like are stored, and the data read from the storage unit 41 is transferred to the display control unit 45, the device control unit 46, and the serial interface 47. The device selection control means 44
Specifies a device (electronic tuner 28, CD changer 26, cassette deck 27, electronic volume 34, driver 32) for transferring the data read from the storage means 41. The data read from the storage means 41 is transferred to the electronic tuner 28, the electronic volume 34, the driver 32, etc. via the serial interface 47 and the interface 48. The data for controlling the cassette deck and the data for controlling the CD changer are transferred to the cassette deck 27 or the CD changer 26 via the device control means 46. Further, the operation state of the cassette deck 27 is input to the device control means 46, and the display data read from the storage control means 41 is transferred to the driver 32 via the serial interface 47 and the interface 48. 49 is timing control means 36
A timer for managing the time, 50 is an A / D that converts the output of the CD changer 26, cassette deck 27, and electronic tuner 28 into A / D.
The reproduction level data converted by the A / D conversion unit 44 is transferred to the driver 32 via the display control unit 45, the serial interface 47, and the interface 48, and the display pattern 39 constituting the display unit 31. Blinking control.

Next, the operation of the above embodiment will be described. The left and right reproduction signals output from the electronic tuner 28, the CD changer 26, or the cassette deck 27 are output via the switching circuit 33.
It is input to the A / D conversion, enters the display control means 45, and the display data corresponding to the input signal level is output from the display control means 45, and this display data is sent to the driver 32 via the serial interface 47 and the interface 48. And the left and right signal levels are displayed by the display pattern 39 which is transferred to the liquid crystal display panel and is provided in a ring shape on the outer periphery of the liquid crystal display plate.

FIG. 6 shows an example in which the left and right reproduction signal levels are displayed by the display pattern 39. In FIG. 6, the upper part of the display pattern 39 shows the left (L) reproduced sound level, and the lower part shows the right (R) reproduced signal level.

In the cassette mode, when the cassette deck 27 is controlled to be FF or REW, the FF state or REW state is transmitted to the device control means 46 and the display control means 45 is informed of the state. The display control means 45 outputs the display pattern data in the FF state or the REW state, the display pattern data is transferred to the driver 32 via the serial interface 47 and the interface 48, and is provided in a ring shape on the outer periphery of the liquid crystal display panel. The display pattern 39 is blinked to perform FF or REW display as shown in FIG.

7 (A) and 7 (B) show the display pattern 39 for the fast forward (FF) direction and fast reverse (RE) of the magnetic tape on the cassette deck.
W) shows an example of displaying the direction. During the FF operation, as shown in FIG. 7 (A), first, the display patterns a, b, c, d, ... Display pattern b, c, d in clockwise order
... x, y, z are turned off, and the same operation is repeated thereafter. On the other hand, at the time of REW, the display patterns y, x ... d, c, b, a are sequentially turned on from the display pattern z, and then the display pattern z is displayed.
After that, the display patterns y, x ... D, c, b, a are turned off in the counterclockwise order, and the same operation is repeated thereafter.

As described above, in this embodiment, the switch composed of the transparent electrode is arranged on the front surface of the display plate, and the plurality of display patterns are arranged annularly on the outer peripheral portion of the display plate to form the display, and Since this display section is also used as a signal level display and as a magnetic tape running direction display, the display section becomes large and the display content can be easily grasped.

EFFECTS OF THE INVENTION The present invention is configured as described above, and a display is configured by arranging a switch made of a transparent electrode on the front surface of a display plate and arranging a plurality of display patterns in an annular shape on the outer peripheral portion of the display plate. In addition, since this display section is also used as a signal level display and also as a magnetic tape running direction display, the display section becomes large and the displayed contents can be easily grasped.

[Brief description of drawings]

1 to 3 are front views of a controller for a composite audio apparatus according to an embodiment of the present invention, FIG. 4 is a view showing the arrangement of switches of the same, and FIG. 5 is a block diagram of the same. 6 and 7 are diagrams showing display examples on the apparatus. DESCRIPTION OF SYMBOLS 1 ... Device main body, 2 ... Power switch, 3 ... Dust cover, 4 ... Eject button, 5 ... Loudness control button,
6: Time call button, 7: Attenuator and dimmer control button, 8A: Up button, 8B: Down button, 9: Radio selection button, 10: CD selection button, 11 to 23: Function switching Unit, 24 display unit, 25 adjustment mode switching unit, 26
CD changer, 27 cassette cassette, 28 electronic tuner, 29 control unit, 30 operation unit, 31 display unit,
32 …… Driver, 33 …… Switching circuit, 34 …… Electronic potentiometer, 35,36 …… Power amplifier, 37A, 37B, 38A, 38B ……
Speaker, 39 display pattern, 40 key processing means
41 storage means, 42 timing control means, 43 storage control means, 44 device selection control means, 45 display control means, 46 device control means, 47 serial interface, 48 ... Interface, 49 ... Timer, 50 ... A / D conversion means.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G11B 33/10 602 F 7177-5D

Claims (1)

[Claims] 1. A display plate arranged on the front surface of the main body of the apparatus, a plurality of switches composed of transparent electrodes arranged on the front surface of the display plate, and a signal level display annularly arranged on the outer peripheral portion of the display plate. A display device for an in-vehicle audio device, comprising: a plurality of display patterns for display; and display control means for sequentially blinking the display pattern clockwise or counterclockwise according to the tape running direction of a cassette deck.