JPH02110891A - Connection constitution for acoustic apparatus for automobile - Google Patents

Abstract

PURPOSE:To adapt a connector to various soft of plural acoustic apparatus for automobile by giving approximately common outside dimensions to them, arranging connection terminal groups having the same arrangement in common positions on them and incorporating power amplifiers in them. CONSTITUTION:Various information reproducing apparatus such as a cassette deck 10, a CD player 12, and a DAT player 14 have approximately common outside dimensions, and the same connection terminal group is arranged in common positions on them, and a sleeve provided with a connector 18 corresponding to the connection terminal group is set in the aperture space of a dashboard or the like of an automobile. Each head unit in-corporates a 4-channel power amplifier and a tuner. Thus, a user can enjoy various soft in the car room.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a connection configuration for automotive audio equipment.

<Prior art and its problems> A so-called car stereo that is installed at any location such as a dash board inside a car is well known. Cassette decks have traditionally been widely used as audio equipment for automobiles, but in recent years, with the spread of digital audio equipment such as compact disc (CD) players and digital audio tape (DAT) players, these CDs, DATs, etc. There is an increasing demand for software to be usable in cars.

In order to meet such demands, various CD players and DAT players for automobiles have been provided or proposed, but the opening space provided in automobiles, especially on dash boards, to accommodate such audio equipment is not normally available. In this case, there are one or two opening spaces, and it is practically impossible to permanently install more different audio equipment than the number of opening spaces in the automobile.

A plurality of information reproducing devices such as a cassette deck section and a CD player section are incorporated into a single device, and this is configured so that it can be attached to the open loss base of the dash board from both directions.
Automobile audio equipment configured so that it can be used as both information reproducing equipment has also been proposed (from 1982 onwards).
48084). In this case, if a plurality of information reproducing devices are incorporated into a single device, the device will inevitably become larger. Furthermore, if such a device is installed in the limited opening space of the dash board of an automobile, approximately half of the device will protrude into the interior of the vehicle, potentially interfering with driving, etc.

<Means for Solving the Problems> The present invention has been devised in consideration of the various circumstances in the prior art as described above, and is designed to provide a connection configuration for a plurality of automotive audio equipment that is compatible with various software. The main purpose is to provide In particular, when audio equipment such as a cassette deck, CD player, DAT player, etc. is used for automobiles, the present invention provides output terminals for front and rear speakers, accessory input terminals for interlocking with automobile accessory switches, etc. The above object is achieved by focusing on the fact that connection terminals are commonly provided for all audio devices.

That is, the present invention is configured such that a plurality of audio devices each having a built-in power amplifier can be used in common, in which a group of connection terminals having substantially the same external dimensions and a common arrangement are arranged at a common position. a single sleeve that is attached to any opening in a vehicle interior and has an inner dimension that corresponds to a common outer dimension of the audio equipment, and that when the audio equipment is housed in the sleeve, the a connector means disposed on the back side of the sleeve so as to fit correspondingly to the group of connection terminals in the device; and a connector means arranged on the back side of the sleeve to correspond to and fit with the group of connection terminals in the audio device when the audio device is housed in the sleeve. and external connection means connected to the connector means for achieving connection with external equipment including at least a battery and a speaker.

<Function> According to the present invention, various information reproducing devices, such as cassette decks, CD players, and DAT players, all have substantially the same outer dimensions and a common group of connection terminals are arranged at a common position. A sleeve equipped with connectors corresponding to the group of connection terminals is installed in an opening space in the dash board of a car, for example, so that the user can select an information playback device according to the software desired by the user and insert it into the space. You can enjoy the software just by loading it into your computer.

<Embodiment> The first embodiment shown in FIG. 1 is replaceably attached to a single sleeve that is fixedly or removably attached to a predetermined location in a car, particularly an opening space formed in a dasonyu board. As a head unit Z with built-in tuners, the cassette digital 10. It includes a CD player 12 and a DAT player 14. These head units are all configured to have the same outer dimensions so that they can be attached to a single sleeve. In addition, each of these head units has an operation panel on its front, and a series of connection terminals with a common structure are provided on the back at a common position, and the signals flowing to each terminal are the same. be.

Figure 8 shows the head unit (for example, a cassette deck).
O is shown) is shown in the state immediately before being attached to the sleeve, and in this embodiment, the connection terminal group of the cassette deck 10 and the connection to the external device are the sockets forming the connection terminal group. 103 and a plug 102 attached to the inner part of the sleeve 101.
8 (FIG. 1). As this 24-bin connector, for example, part number C3S manufactured by SMK Co., Ltd.
3124 (socket) and C3C3124 (plug) can be used. Thus, when the cassette deck IO is completely inserted into the sleeve 101, the sleeve 10
Each pin of a plug 102 attached to the back side of the cassette deck 10 is fitted into each hole of a socket 103 provided on the back side of the cassette deck 10, thereby establishing an electrical connection between the two.

The input/output signals in each head unit of the first embodiment are as follows:
As shown in FIG. 1, the output for the front speakers 20 (
sp 0UT(F)), output for rear speaker 22 (
SP 0UT(R)), AUX input (AUX IN)
, accessory human power (ACC) for being powered from the battery via the accessory switch in order to operate in conjunction with the accessory switch of the automobile, battery TIL source input (BATT) for being powered directly from the panteri, the above two systems. Ground (GND) corresponding to the power input terminal of
, A light control input (LIGHT CONT) whose voltage changes in conjunction with the illuminance adjustment of various instruments in the car to control the illuminance adjustment of the head unit, and an antenna input (ANT) connected to the antenna installed in the car.
and a system control signal (SYS/C0N). The system control signal (SYS/C0N) is used to remotely control a CD changer 16 installed in the rear trunk of a car, for example, separately from the head unit in the dash board, via the control section on the front panel of the head unit. This is a control signal that is sent and received, and in particular, even when the cassette deck 10 or the DAT player 14 is selected and installed as the head unit, the CD in the CD changer 16 can be preset via the operation section on the front panel of the cassette deck 10 or the DAT player 14. This is used to select and play music according to the program you have set. The accessory power supply (ACC) works in conjunction with the accessory switch to turn on the power to the head unit.
N10 FF.

Also, the battery power supply (BATT) is connected to the accessory power supply when the power supply is turned off.
Even in the FF state, various memories inside the head unit are retained, and the voltage is adjusted to a predetermined voltage through a stabilizing circuit within the head unit, so that the voltage remains constant regardless of the power consumption of other electrical devices in the car. It is designed to be used for head unit operation. In addition, each head unit connects the power antenna installed outside the vehicle to the tuner built into the head unit.
10 Control signal (POW) for operation in conjunction with FF
ERANTONloFF) is output. Furthermore, from each head unit, turn on the power switch of the head unit to ON1.
0 In conjunction with FF, the electric g of CD changer 16 is set to 0N1.
A control signal (POWER0N10FF) to turn it off is output.

Each head unit in this embodiment includes a 4-channel power amplifier and a tuner. Of course, the tuner may be constructed separately from the main body of the cassette deck, CD player, or DAT.

An example of the arrangement of each terminal in the socket 103 and plug 101 of the 24-pin connector 18 in this first embodiment is shown in Table 1 below. Furthermore, CD changer 16
A digital data bus (D"B) capable of bidirectional data transfer is adopted as the transmission path for transmitting system control signals (SYS/C0N) for remote control by each head unit attached to the sleeve 101 of the dash board. The 9th pin and 13th pin are reserved terminals for system control signal expansion.

Table 1 Terminal CC ND ATT ANT LIGHT C0NT POWERANT 0N10FF POWEJ? 0N10FF ND makes it possible to make the head unit smaller and lighter and to reduce costs compared to the first embodiment. The power amplifier 24 outputs the line out output (LINE 0) from each head unit.
UT), and the speaker output (SP 0LI
T) is configured to be sent to the rear speaker 22. For this reason, each head unit 7 in this embodiment sends out an output (SP 0UT) for the front speaker 20, and also outputs a line out output (LINE 0IJ).
T) is given to the power amplifier 24 for the rear speaker 22, and the power switch of each head unit is turned ON10.
The power amplifier 24 along with the CD changer 16 is attached to the FF.
A control signal for interlocking the power supply (POWER0N
10FF) is sent and executed.

An example of the terminal arrangement of the 24-pin connector 18a in this second embodiment is as shown in Table 2 below.

The second to fourth embodiments of the present invention will be described below in order, but the same components and members as in the first embodiment are designated with the same reference numerals, and therefore, they will basically be described in the following. Since this is the same as in the first embodiment, detailed explanation will be omitted. Also, components and members corresponding to those in the first embodiment are shown with corresponding reference numerals, and therefore, the second to fourth embodiments will mainly be explained with respect to the parts that are different from the first embodiment.

In the second embodiment shown in FIG. 2, a cassette deck 10a, a CD player 12a, and a DAT player 14a each having a built-in two-channel power amplifier and tuner for the front speakers 20 are replaceably installed in an automobile's dungeon board. It is envisaged that it can be attached to an integrated sleeve. That is, there is no built-in two-channel power amplifier for the ass beaker 22 installed in these head units, and the two-channel power amplifier 24 for rear speakers is installed in the rear trunk of the automobile, etc., separately from each head unit and unit. This second table terminal CC ND ATT ANT LICIIT C0NT POWERANT 0N10FF POWER0N10FF ND In the third embodiment having the configuration shown in FIG. DAT player 14b may be replaceably and removably mounted within a single sleeve. Each of these head units 1 does not have built-in power amplifiers for the front speaker 20 and the rear speaker 22, and can further reduce size and weight and cost compared to the second embodiment. Line out output (LINE 0UT (F), LINE 0UT (F), LINE
01lT(R)) is sent via the 24-pin connector +8b to a 4-channel power amplifier 2G installed in the rear 1 to rank of the car, and amplified speaker output (SP 0UT(F), SP 0UT(R)
) are 70 tons each, 20 beakers and 2 rear speakers.
Sent to 2. From the head unit, a control signal (PO
WERONloFF) is sent via connector 18b.

An example of the pin arrangement of the connector 18b in the third embodiment shown in FIG. 3 is shown in Table 3 below.

Table 3 Terminal CC ND ATT ANT LIGHT C0NT POWERANT 0N10FF POWER0N10FF ND The configuration of the fourth embodiment is as shown in FIG. Cassette deck lOc.

The head unit of either the CD player 12c or the DAT player 14c is optionally configured to be mounted within a sleeve that fits into the open space of the Tanonyu board. Since each head unit prepared in this fourth embodiment does not have a built-in speaker power amplifier or tuner, it is possible to significantly reduce the size and weight as well as cost.

FIG. 5 shows a schematic configuration of each head unit in the fourth embodiment. In addition, when an analog device (cassette deck 1oc) is used as a head unit and a digital device (CD player L2c or DAT player 14c)
The equipment configuration differs slightly from when . The figure basically shows the case of analog equipment, and changes for digital equipment are shown in parentheses or dotted lines.

A signal from the head unit mechanism section 30 (in the case of a CD player, includes an optical amplifier, an optical amplifier, an optical amplifier drive motor, a disk Tanabata, etc.) is sent to a preamplifier (or RF
After being amplified and shaped by amplifier) 32, buffer 7 amplifier (
or digital signal processing circuit) 34, and is output as an analog signal (or digital signal).

When analog equipment is used, the buffer amplifier 34 is connected to protect the preamplifier 32 from impedance fluctuations and to eliminate mutual interference (when digital equipment is used, various functions including demodulation processing using PLL are connected). digital signal processing is performed).

The mechanism section 30 is connected to a support circuit 36, and a first microcomputer 38 controls each operation in the mechanism section 30 by means of an operation switch 31. Further, the second microcomputer 4° controls a display 42 for displaying the operating state of the head unit by using the operation switch 3, and also outputs a system control signal (SYS/C0).
N) is sent. The system control signal in this embodiment (
SYS/C0N) +i Devices that are sent and received in order to remotely control the CD changer 16 are separated from each head unit and installed separately in the car, namely the D/A converter unit 50 and the tuner unit 60. As will be described later, control signals for remote control are also transmitted and received. Furthermore, the second microcomputer 40 receives a power control signal (POWER0N10
FF) to turn on the power to the CD changer 16, D/A converter unit 750, and tuner unit 60.
N10 Controls F warehouse.

An example of the configuration of the D/A converter unit 50 is shown in FIG. CD player 12 as head unit
When using a digital audio device such as DATl4c or DATl4c, the digital signal (DloUT(1)) transmitted via the 24-bin connector 18c or the digital signal transmitted from the CD changer 16 (DloUT(2)
)) is first input to P via an input changeover switch 90 which is controlled by a system control signal (SYS/C0N).
LL52 corrects the distortion on the time axis of the digital signal,
After unnecessary frequency components are removed by the digital filter 54, the signal is converted into an analog signal by the D/A converter 56. From the obtained PAM wave, only the audio signal is extracted by the LPF 58 and sent to the tuner unit 60 as an analog signal (A10UT). In addition, the periodic signals required when converting to analog signals are system control signals (
SYS/C0N) is transmitted to and received from the head unit.

An example of the configuration of the tuner unit 60 is shown in FIG. In this embodiment, a digital synthesizer tuner is adopted, and the system control signal (SYS/C0
N), the PLL synthesizer 62 receives a signal that controls AM/FM selection and tuning in the tuner.
The AM tuner section 6 sends a control signal to increase/down the frequency to match the desired channel of M or FM.
4 or the FM tuner section 66, and the antenna (AN
The radio signal from T) is sent via a changeover switch 68 to an input changeover switch 70 which is controlled by a system control signal (SYS/C0N). Input selector switch 7
0, further i: AUX input signal (AUX[N)
and the first and second analog input signals (A/IN(1),
^/IN(2)) is sent. The first analog input signal (A/IN(1)) is the analog output from the cassette deck lOc, which is an analog device, and is sent via the connector 18c, and the second analog signal (A/IN(2))
When a digital device such as a CD player 12c or a DAT 14C is used as a head unit, the signal is converted into an analog signal by the D/A converter unit 50 and sent as an analog signal as described above. Here, the system control signal (SYS/C0N) includes a signal that identifies whether the head unit is an analog device or a digital device, and if the head unit 7 is an analog device, the input selector switch 70 is Analog output (A10UT(1)) from the head unit
If the head unit is a digital device, switch the input changeover switch 70 to the analog output (A10UT(2)) from the D/A converter unit 50.
and AUX, respectively.

Furthermore, AUX input (AUX IN) is provided by the head unit.
is selected, the system control signal (SYS/C0N
) controls the input changeover switch 70 to switch to the AUX input.

The signal from the input switching switch 0 is sent to the volume control circuit 72. The signal is sent to the balance control circuit 74 and transmitted to the tone control circuit 78 via the buffer amplifier 76. Further, a fader control circuit 82 is provided via a buffer amplifier 80.
After the output of the front speaker 20 and rear speaker 22 is adjusted, the line out output (LINE 0UT (F
), LINE 0UT(R)) and sent to the power amplifier 28. The amplified output signals (SP 0LIT (F), SP 0UT (R)) are guided to the front speaker 20 and the rear speaker 22, respectively, and converted into outputs.

Here, the volume control circuit 72, the balance control circuit 7
4. Tone control circuit 78.7 The machine control circuit 82 is remotely controlled by a system control signal (SYS/C0N).

This tuner unit 60 includes a DC/DC converter 8 for stabilizing the power supply voltage to each head unit.
4 is built-in. That is, the battery power supply (BATT) supplied via the power supply 18c is stabilized here and converted into a constant voltage power supply (DC), which is again supplied to the head unit via the connector 18c. If the head unit operates with plus or minus power, the battery power (BATT) is connected to this DC/DC converter 8.
4, it can be stabilized and converted to a negative voltage.

These D/A converter units 50. Naturally, it is also necessary to supply power to the tuner unit 60 itself. An example thereof is shown in conjunction with FIG. 6 for a D/A converter unit 50. The battery "t g (BATT) supplied through the connector 18c is converted by the DC/DC converter 86, and the obtained +5V, -5V and -15V
A voltage of V is used within the unit 50. If a particularly large power supply voltage is not required, the power (DC) output from the DC/DC converter 84 built into the tuner unit 60 may be used as is. Inside the tuner unit 60, a constant voltage power source (DC) is used similarly to each head unit.

An example of the pin arrangement of the connector 18c used in the H.284 embodiment is shown in Table 4 below.

Table 4 Terminals CC ND BATT DC LIGHT C0NT POWERANT 0N10FF POWER0N10FF ND In the second to fourth embodiments described above, the power amplifier was described as being installed in the trunk of a car, but the present invention is not limited to this. It's not something you can do. For example, as shown in Figure 9, a power amplifier is miniaturized by using a small power 1c! 10 is provided with a plug 104 corresponding to the socket [03 behind the head unit (in the illustrated example, the cassette deck 10), and
A socket [05 corresponding to the plug 102 in the inner part of the sleeve 101 is provided on the back side of the sleeve 101, and the outer dimensions of the power amplifier 110 are also formed to correspond to the inner dimensions of the sleeve 101. It is also possible to place it between.

In this case, power from the battery is supplied to the head unit via the power amplifier llO.

In addition, in the first to fourth embodiments, the 0N10FF of the power supply of the power amplifier etc. is the system control signal (SYS/
Control signal (POWER0N10FF) different from C0N)
However, this control can also be configured to be performed using a system control signal (SYS/C0N). Furthermore, it is sufficient that each head unit is formed so as to correspond to at least the outer dimensions of the portion to be installed inside the sleeve or the inner dimensions of the sleeve, and the shape of the front operation panel of each head unit may be changed as appropriate. Of course, it is something that can be gained.

<Effects of the Invention> According to the present invention described above, head units of various analog or digital audio equipment such as cassette decks, CD players, DAT players, etc. can be replaced, detached, and selected. Since it can be installed in a single sleeve installed on a loss base or the like, various software can be enjoyed inside the vehicle.

[Brief explanation of the drawing]

1 to 4 are schematic block diagrams showing an embodiment of the present invention, FIGS. 5 to 7 are block diagrams showing a schematic structure of each unit in the configuration shown in FIG.
9 to 9 are perspective views of essential parts showing different aspects of the attachment relationship between the head unit and the sleeve. Explanation of symbols to, lOa, lOb, lOc: Cassette 7' y
Ki 12.12a, 12b, 12c: CD player 14.
14a, 14b, 14c: DAT18.18a, 18b
, 18c::I connector 24.26, 28: Power amplifier 50: D/C converter unit

Claims (2)

[Claims] (1) A device that has approximately the same external dimensions and a group of connection terminals arranged in a common arrangement in a common position, and is configured so that multiple audio devices, each with a built-in power amplifier, can be used in common. a single sleeve that is attached to any opening in a vehicle interior and has an inner dimension that corresponds to a common outer dimension of the audio equipment; a connector means disposed on the back side of the sleeve so as to fit in correspondence with the connection terminal group; and at least a 1. A connection arrangement for automotive audio equipment, characterized in that it comprises external connection means connected to the connector means for achieving connection with external equipment including a battery and a speaker. (2) A connection configuration for an automobile audio device according to claim 1, wherein the audio device has a built-in tuner.