JPH0648787B2 - Audio equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio device such as a radio receiver, a cassette deck or a combination device thereof, and more particularly to an audio device having a volume storage function and an equalizer characteristic storage function.

2. Description of the Related Art Conventionally, by storing a volume level and an equalizer characteristic and operating a predetermined key, the stored volume level,
There is known an acoustic device that reads out equalizer characteristics, changes a setting value of an electronic volume, and changes equalizer characteristics. However, these conventional acoustic devices
The operation unit display for storing / reading the volume level and the operation unit display for storing / reading the equalizer characteristic are performed separately, and the key switch for storing / reading the volume level and the key switch for storing / reading the equalizer characteristic are provided. Was different.

Problems to be Solved by the Invention As described above, in the conventional audio device, since the memory operation unit display and the key switch are separately provided,
As the number of function displays increases, the number of key switches increases, and the area of the operation unit and display unit for each function decreases.
The display of the operation section was difficult to see and it was difficult to operate.

The present invention solves the above conventional problems.
(EN) Provided is an audio device having a large operating unit display and operating unit for each function.

Means for Solving the Problems In order to achieve the above object, the present invention provides a function display section for displaying operable functions and operation positions, a key switch arranged on the function display section, and a mode switching means. Display switching means for switching the display of the function display section in accordance with the mode switching by means of the operation display for volume storage / reading of the function display section in the volume adjustment mode and for equalizer characteristic storage / reading in the equalizer mode. The operation position display is the same display, and the storage / readout key switch is also used in both modes.

Operation The present invention has the above-described configuration, and the operation position display for volume storage / reading displayed on the function display portion when the mode is switched to the volume adjustment mode and the equalizer mode is set by the mode switching means. The operation position display for storing / reading the equalizer characteristics, which is displayed on the function display section when switched, becomes the same display, and the volume level is stored or read by operating the display position displayed in each of the above modes. Alternatively, the equalizer characteristics can be stored or read.

Embodiment FIG. 2 shows the front of an on-vehicle audio device (integrated device of a radio receiver and a cassette deck) according to an embodiment of the present invention. In FIG. 2, 1 is a main body of the apparatus, 2 is a power switch, 3 is a dust cover that is openably and closably provided in a cassette insertion opening, 4 is an eject button for ejecting the inserted cassette, 5a, 5b and 5c are Each of them is a key switch, for example, the key switch 5b is for switching between displaying time and receiving frequency on a display section described later, and the key switch 5c displays an equalizer characteristic on a characteristic display section described later. It is for displaying and switching to the equalizer characteristic adjustment mode. Reference numeral 6 denotes a function display section 6 for displaying operable functions. On the front surface of the function display section 6, a plurality of key switches 7a to 7m made of transparent electrodes are arranged as shown in FIG. There is. 2 shows a display example in the radio mode, and FIG. 3 shows a display example in the cassette deck mode. Reference numeral 8 is a display section for displaying the reception frequency, time, traveling direction of the cassette deck, AM, FM, preset channel number, etc., and 9 is a characteristic display section for displaying the spectrum characteristic and the equalizer characteristic. A key switch 7n is arranged in the characteristic display section 9 as shown in FIG. 4, and by operating this key switch 7n, the display of the characteristic display section 9 is alternately switched between the spectral characteristic display and the equalizer characteristic display. To be Reference numeral 10 denotes a volume adjustment function display section for displaying a volume adjustment function. “VOL” blinks in the volume adjustment mode, “BAL” blinks in the left / right volume balance adjustment mode, and “FAD” in the front / rear volume adjustment mode. Flashes. As shown in FIG. 4, the volume control function display section 10 has a mode switch key switch 7
o is arranged, and by operating the key switch 7o, the volume adjustment mode, the left / right volume balance adjustment mode, and the front / rear volume adjustment mode are sequentially switched. 1
Reference numeral 1 is a level attenuation display section, and this level attenuation display section 1
1, a key switch 7p is arranged as shown in FIG. 4, and the reproduction signal can be attenuated by 20 dB by operating the key switch 7p. 20 dB
When attenuating, "-20 dB" is displayed. 12
Is an up / down display section for displaying an increase or decrease in volume, and on this display section 12, key switches 7q and 7r are arranged as shown in FIG. The key switch 7q is for increasing the volume, and the key switch 7r is for decreasing the volume.

FIG. 1 shows the configuration of the above embodiment. In FIG. 1, 20 is an electronic tuner, 21 is a cassette deck, and 2
2 is an analog switch, and this analog switch 2
Reference numeral 2 is for selecting one of an acoustic signal output from the electronic tuner 20 and an acoustic signal output from the cassette deck 21, and a control signal output from the cassette deck 21 when a cassette is inserted into the cassette deck 21. As a result, the analog switch 22 is switched to the cassette deck 21 side, and the analog switch 22 is switched to the electronic tuner 20 side by a control signal generated when the cassette is ejected from the cassette deck 21. Reference numeral 23 denotes a bandpass filter group, and this bandpass filter group 2
3, the center frequency is 63Hz, 125Hz, 250Hz, 50
It is composed of bandpass filters ₁ to _{7 of} 0 Hz, 1 KHz, 3.5 KHz and 10 KHz. The outputs of the bandpass filters ₁ to ₇ are used for displaying spectral characteristics. Reference numerals 24R and 24L denote bandpass filter groups that form equalizers for the right channel and the left channel, respectively, and these bandpass filter groups 24R and 24L.
Is composed of a plurality of band pass filters ₁ to ₇ each having a different center frequency. Reference numerals 25R and 25L denote electronic volume groups that form equalizers for the right channel and the left channel, respectively. These electronic volume groups 25R and 25L are a plurality of electrons for adjusting the output levels of the bandpass groups 24R and 24L. Volume VR1 to V
Composed of R7. Reference numerals 26R and 26L are analog switches constituting the right channel and left channel defeat switches, respectively.
By switching R and 26L, it is possible to output an acoustic signal without going through an equalizer. 27F is an electronic volume for adjusting the levels of front (Front) signals FR and FL of the right and left channels, and 27R is an electronic volume for adjusting the levels of rear (Reav) signals RR and RL of the right and left channels. It is a volume. 28F is the front signal FR,
Power amplifier for amplifying FL, 28R is rear signal RR, R
It is a power amplifier that amplifies L. Power amplifier 28F
The front signals FR and FL amplified by are the speakers 29FR and 29 arranged on the front right and left sides in the passenger compartment of the automobile, respectively.
The rear signals RR and RL that are applied to the FL and amplified by the power amplifier 28R are applied to the speakers 29RR and 29RL arranged on the left and right of the rear side of the vehicle interior, respectively. Thirty
Is an operating unit, and the operating unit 30 is composed of the key switches 5a to 5c and 7a to 7r in FIG. Three
Reference numeral 1 denotes a display unit, and this display unit 31 includes the function display unit 6, the display unit 8, the characteristic display unit 9, the volume adjustment function display unit 10, the level attenuation display unit 11, and the up / down display unit 12 in FIG. Composed. A driver 32 drives the display unit 31. Reference numeral 33 denotes the electronic tuner 20, cassette deck 21, electronic volumes 25R and 25L, analog switches 26R and 26L, and electronic volume 27.
It is a central processing unit (CPU) that controls the F, 27R, and the driver 32, and the function of the CPU 33 will be described below. Reference numeral 34 denotes a key processing means. The key processing means 34 discriminates the key switch operated by the operation unit 30 to change or update the data stored in the storage means 35 and to the timing control means 36. Send the key discrimination result. The timing control means 36 determines the timing of various operations according to the key discrimination result, and the storage control means 3
7, the device selection control means 38, the display control means 39, and the deck control means 40 are controlled. The storage control means 37 designates an address for writing data to or reading data from the storage means 35. The storage means 35 stores data for controlling the electronic tuner 20, data for controlling the cassette deck 21, and equalizer control (electronic volume controls 25R, 25L, analog switch 26).
R, 26L control data, electronic volume 27F,
27R control data and driver 32 control data are stored, and the data read from the storage means 35 is transferred to the display control means, deck control means 40, and serial interface 41. The device selection control means 38 designates the device (electronic tuner 20, electronic volume 25R, 25L for the equalizer, analog switches 26R, 26L, electronic volume 27F, 27R, driver 32) to which the CPU 33 should transfer data. The data read from the storage means 35 is transmitted via the serial interface 41 and the interface 42 to the electronic tuner 20 and the equalizer (electronic volume 2).
5R, 25L), the electronic volume 27F, 27R, and the driver 32. Further, the data for controlling the cassette deck is transferred to the cassette deck 21 via the deck control means 40. 43 is a timer for managing the time of the timing control means 36, 44 is the bandpass filter group 23
A / D conversion means for A / D converting the output of
The data converted by the / D conversion means 44 is the display control means 3
9, the data is transferred to the driver 32 via the serial interface 41 and the interface 42.

Next, an outline of the operation of the above embodiment will be described.

Turn on the power switch 2 with the cassette not inserted.
If N, the radio mode is set and the display shown in FIG. 2 is displayed. In FIG. 2, when the portion displayed on the function display portion 6, for example, the “FM” display portion is pressed, the corresponding key switch (key switch 7a in FIG. 4) is turned on and the FM broadcast is received and displayed. “FM” is displayed in the section 8 and the reception frequency is displayed. The characteristic display unit 9 also displays the level of each frequency band of the acoustic signal. (Spectrum characteristic display) or the display "TUNE" portion is operated and the key switch 7d or 7 is pressed to select a channel. When the key switch 7d or 7 is pressed for a short time, manual tuning is selected, and when it is pressed for a long time, automatic tuning is selected. Also, the display "1", "2", "3",
Key switches 7h corresponding to "4", "5", and "6"
Press one of the 7m to receive the preset station. In FIG. 2, when the volume adjusting function display unit 10 is pressed once, the volume adjusting mode is activated and "VOL" blinks.
In this state, the key switch 7q of the up / down display section 12
Alternatively, when 7r is pressed, new data is set in the electronic volumes 27F and 27R, and the volume is increased or decreased.

When the key switch 5c is pressed in the state shown in FIG. 2, the equalizer mode is set and the display is switched to that shown in FIG. In FIG. 5, for example, when the portion corresponding to the display "63" is pressed, the key switch 7a is turned on and the column corresponding to 63 Hz on the characteristic display portion 9 blinks. When the key switch 7q or 7r of the up / down display section 12 is pressed here, the level of 63 Hz of the equalizer is changed and the display of the characteristic display section 9 is also switched. Similarly, the levels of other frequency bands can be adjusted. After the adjustment, for example, when the display "1" portion is pressed for a long time (for example, 2 seconds or more), the adjusted equalizer characteristic is stored in the storage unit 35. When the display "1" portion is pressed for a short time, the stored data of the equalizer characteristic is read out, and this data is set in the electronic volumes 25R and 25L, and the characteristic display section 9 corresponds to the set equalizer characteristic. The display is switched to the display. Similarly, other equalizer characteristics are stored and read by operating the display "2", "3", and "4" portions.

In the radio mode, when a cassette is inserted, the cassette deck mode is set and the display is switched to that shown in FIG. When the key switches 7a to 7m corresponding to the respective functions displayed on the predetermined function display section 6 are operated, the deck control corresponding to the display is performed.

In the radio mode or the cassette deck mode, when the volume adjusting function display portion 10 is pressed once, the key processing means 34
The volume control function request is discriminated by the timing control means 3
6 outputs a timing signal in the volume adjustment mode. The storage control means 37 operates in response to this timing signal, sends data for blinking "VOL" of the volume control function display section 10 to the driver 32, and at the same time, the current volume data stored in the storage means 35 is read out and electronically displayed. Volumes 27F and 27R are set, and further volume display data corresponding to the current volume data is set in the driver 32, and the characteristic display section 9 displays the volume in a stepwise manner as shown in FIG. Here, when the up / down display unit 12 is operated and the key switch 7q or 7r is pressed, the volume data and the volume display data in the storage means 35 are updated according to the number of times of this key operation, and the updated volume data is The volume is increased or decreased by being set in the electronic volumes 27L and 27R, the updated volume display data is set in the driver 32, and the display of the characteristic display unit 9 is changed. When the display "1" portion in FIG. 6 is pressed for a long time (for example, 2 seconds or more), the volume data currently set is stored in the storage means 35. Similarly, by further changing the volume and operating the displays "2", "3", and "4", different volume data can be stored in the storage means 35. Also, the display "1", "2", "3",
When one of "4" is operated for a short time, the stored volume data is read from the storage means 35, set in the electronic volumes 27F and 27R, the volume is changed, and the characteristic display section 9 displays. Is also changed.

As described above, in the present embodiment, the operation position display “1”, “2”, “3”, “4” for storing or reading the volume displayed on the function display unit 6 when the volume adjustment mode is switched to. When,
The operation position display for storing or reading out the equalizer characteristics displayed on the function display portion 6 when the mode is switched to the equalizer mode is also used as the operation position display "1", "2", "3", "4". Since the memory / read key switches 7j, 7h, 7l, and 7m are also used in the mode, the area of the display unit and the operation unit per function can be increased.

EFFECTS OF THE INVENTION The present invention has the above-described configuration, and has the advantage that the area of the display unit and the operation unit per function can be increased because the display and the key switch are combined. The present invention is particularly effective for a vehicle-mounted acoustic device in which the areas of the display section and the operation section are limited.

[Brief description of drawings]

FIG. 1 is a block diagram of an audio device according to an embodiment of the present invention, FIGS. 2 and 3 are front views of the device, and FIG. 4 is a view showing arrangement of key switches of the device, and FIG. , Sixth
The figure is a front view of the apparatus. 1 ... Device body, 2 ... Power switch, 3 ... Dust cover, 4 ... Eject button, 5a-5c ... Key switch, 6 ... Function display section, 7a-7r ... Key switch,
8 ... Display section, 9 ... Characteristic display section, 10 ... Volume adjustment function display section, 11 ... Level attenuation display section, 12 ... Up-down display section, 20 ... Electronic tuner, 21 ... Cassette deck, 22 ... Analog switch, 23 ... Bandpass filter group, 24L, 24R ... Bandpass filter group, 25L, 25R ... Electronic volume group, 26L,
26R: analog switch, 27F, 27R ... electronic volume, 28F, 28R ... power amplifier, 29F
R, 29FL, 29RR, 29RL ... Speaker, 30
...... Operation part, 31 …… Display part, 32 …… Driver, 3
3 ... Central processing unit, 34 ... Key processing means, 35 ...
Storage means, 36 ... Timing control means, 37 ... Storage control means, 38 ... Device selection control means, 39 ... Display control means, 40 ... Deck control means, 41 ... Serial interface, 42 ... Interface, 43
...... Timer, 44 ...... A / D conversion means.

Front page continuation (72) Inventor Ichiro Furuya 4-3-1 Tsunashima-higashi, Kohoku-ku, Yokohama-shi, Kanagawa Matsushita Communication Industry Co., Ltd. (72) Masami Shibao 4--3 Tsunashima-higashi, Kohoku-ku, Yokohama-shi, Kanagawa No. 1 in Matsushita Communication Industry Co., Ltd. (72) Inventor, Kazu Matsui, 4-3-1, Tsunashima-higashi, Kohoku-ku, Yokohama-shi, Kanagawa Matsushita Communication Industry Co., Ltd.

Claims (1)

[Claims] 1. A mode switching means, a function display section for displaying an operable function and an operation position, a key switch for executing a function arranged on the function display section, and a mode switching means for switching the mode. And a display switching means for switching the display of the function display section, and for displaying the operation position for storing and reading the volume of the function display section in the volume adjustment mode and for storing and reading the equalizer characteristic of the function display section in the equalizer mode. An acoustic device characterized in that the operation position display is the same display, and it also serves as a memory / read key switch in both modes.