JPH05189871A - Wired remote controller - Google Patents

Abstract

PURPOSE:To obtain a wired remote controller which can be operated even upon the failure of a microcomputer mounted on the remote controller side. CONSTITUTION:In the wired remote controller comprising a unit 1 to be controlled and a remote controller 5 mounting microcomputers 2 and 8, respectively, a display 9 is disposed on the remote controller 5 side. When data communication is performed on wires 29, the microcomputer 8 on the remote controller 5 side takes part only in the display 9 and the key group 10 on the remote controller 5 side is connected directly with the unit 1 to be controlled independently from the microcomputer 8 on the remote controller 5 side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wired remote control device for portable CD players and cassette tape recorders, and more particularly to a wired remote control device having a microcomputer and a liquid crystal display device mounted on the remote control device side.

[0002]

2. Description of the Related Art As a conventional cable type remote control device for a portable cassette tape recorder or a portable CD player, a remote control device (hereinafter referred to as a remote control) is provided between these portable electronic devices and an earphone. Operation of the electronic device is controlled by operating a remote controller close to the.

FIG. 8 is a system diagram showing the overall structure of a conventional portable CD player and a remote controller. In FIG.
Indicates a CD player that constitutes a controlled device, and is configured to reproduce a CD, and is a main microcomputer for controlling various operations (hereinafter referred to as H-CPU).
2).

Further, the reproduction output of the CD is the left and right channel LC.
Output lines 3 and 4 for H and RCH are connected to an earphone 6 via a remote controller 5.

The H-CPU 2 of the CD player 1, the microcomputer (hereinafter referred to as CPU) 8 in the remote controller 5 and the like are driven by a power source 7 arranged on the CD player 1 side.

In the remote controller 5, in addition to the CPU 8, an LCD 9 as a display device, a key group 10 and a decoder 11 for decoding various operations of the key group 10 and supplying the CPU 8 with a backup power source for backing up the memory of the CPU 8 and the like. H-CPU2 and CPU8 have a clock (CLK) line 13 and a data (DATA) line 1
4, request (REQ) line 15, key (KEY)
It is connected by a line 16, and power is supplied from the power supply 7 to the remote controller 5 side through a power supply line 17.

[0007]

In the above-described conventional configuration, the key group 10 is supplied to the CD player 1 side via the decoder 11 and the CPU 8 on the remote controller 5 side, so that the decoder is not incorporated in a small remote controller housing. In addition to the above, if the CPU 8 fails, there is a problem that the remote control operation by the key group 10 becomes completely impossible.

The present invention has been made to solve the above problems, and its purpose is to use the remote controller 5
It is intended to provide a wired remote controller that can perform a remote control operation even if the CPU 8 mounted on the side is broken and can reduce a loss time of the remote control operation.

[0009]

As shown in FIG. 1, the wired remote controller of the present invention has a CD as a controlled means.
Player 1 with wires 3, 4, 13, 14, 16, 17,
In a wired remote control device comprising a remote controller 5 configured to be remotely controlled by 18, a CD player 1 and a remote controller 5 both have an H-CPU 2 and a CPU 8, and various operations of this CD player 1 and this remote controller are performed. The remote controller 5 has a display means 9 for displaying the operation instruction state of the remote controller 5.
H-CPU2 and CPU8 of D player 1 and remote controller 5
The data of the display means 9 is communicated between them, and the operation instruction key group 10 provided in the remote controller 5 is directly related to the H-CPU 2 of the CD player 1 independently of the CPU 8 in the remote controller 5. Is.

[0010]

In the wired remote controller of the present invention, the key group 10 in the remote controller 5 is configured to be decoded in association with the H-CPU 2 on the CD player 1 side.
Even if the PU 8 becomes inoperable, the operation instruction can be given by the key group 10.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A remote controller 5 for remotely controlling a portable CD player 1 according to an embodiment of the present invention will be described below.

In FIG. 1, a CD player 1 on the controlled electronic device side
Has a power supply 7 for driving the H-CPU 2 and a CD player,

An LCD 9 is provided in the remote controller 5 and the display data of the LCD 9 is displayed on the CD player 1 side of the H-C.
A CPU 8 is provided which receives from the PU 2 and supplies it to the LCD 9. Between these H-CPU 2 and CPU 8, a CLK signal from the CPU 8 is supplied to the H-CPU 2 side by a line 13 as a request in 1-bit units.
The line 14 is divided from the 2 side to the CPU 8 side, and the display data (DATA) is transmitted.

Also, + B from the power source 7 on the CD player 1 side
The voltage is the key group 1 along with the CPU 8 and LCD 9 on the remote control 5 side.
Line 1 for voltage source (B) and ground potential (GND) at 0
Supplied via 7 and 18.

The left and right channel audio signals LCH and RCH of the CD player 1 are supplied to the earphone 6 via the remote controller 5.

Further, various operating voltages of the key group 10 are in the form of analog signals divided by resistors R _01, R ₁₁ ... RN ₁ having a predetermined voltage, and are supplied as KEY signals to the CD player 1 side via the line 3. It is configured to be supplied to the H-CPU 2 and the like.

FIG. 2 is a plan view of the remote controller 5 of this embodiment, in which the case 20 is formed in a gourd shape and made of plastic or the like.
The CPU 8 is built in the case 20. An LCD 9 is provided at the left center of the case 20 to provide various displays.
The key group 10 is a PLAY key 26 for reproduction and an F key for fast forward.
F key 23, REW key 24 for rewinding, ST for stopping
OP key 25, DSP key 27, hold switch 28
Etc.

Reference numeral 29 is the above-mentioned leads 3, 4, 13, 14,
A lead remote controller is provided between the CD player 1 and the remote controller 5 by connecting a plug 31 (described later) to the jack on the side of the CD player 1 to connect the CD player 1 and the remote controller 5. Constitute. Incidentally, 30 is connected to the earphone 6 by a jack.

FIG. 3 shows a circuit diagram of the remote controller 5, and the LCD 9 is controlled by the CPU 8 integrated into an IC.

+ B, DATA, KEY, C of the plug 31
The LK pins are supplied to the CPU 8 and the key group 10 via leads 17, 14, 16, and 13. That is, the CLK and DATA leads 13 and 14 are connected to the CPU 8 via the resistors R ₁ and R ₂ , and + B is the FF key 23 constituting the key group 10 via the OFF contact of the hold switch 2,
REW key 24, PLAY key 26, DSP key 27,
It is connected to one fixed contact such as the STOP key 25. The resistor R ₄ and the capacitor C ₇ are connected in parallel to form a smoothing circuit.

+ B is further connected to the CPU 8 via a diode D ₁ , a smoothing resistor R ₃ , a capacitor C _{6 and the} like. Incidentally capacitor _{C 1, C 2, C 3} , C 4, C 5 and crystal X ₁ etc. indicates the components that are external to the CPU 8.

The KYE lead 16 is connected to the other fixed contact of each key of the key group 10 directly or through the resistors R _{5 to} R _12, and depending on each operation mode, the voltage of + B is applied to these resistors R. _The value divided by _{5 to} R ₁₂ is set to H of the CD player 1.
-By directly supplying the analog signal to the CPU2 side, the H-CPU2 side corresponds to the voltage value by PLAY, DS.
Decode to P, STOP, etc.

The audio plugs 32 are LCH and RCH leads for the left and right channels and GND leads 3 and 4.
The LCH and RCH leads 3 and 4 are connected to the jack 30 via the volume adjusting variable resistors RV ₁ and RV ₂ .

In this example, the PLAY key 26 will be described later.
PLA so that CPU8 is reset by pressing
The Y key 26 is connected to the reset terminal via the lead 33 from one fixed contact side.

The data format in the above-mentioned structure is shown in FIGS. 6A to 6C.

FIG. 6G shows a one-frame data format supplied from the H-CPU 2 of the CD player 1 to the CPU 8 of the remote controller 5. Ie MSB to LSB
Up to 20-bit data and 5-bit header (Head
er).

As shown in FIG. 6A, the header is composed of 5-bit continuous data of 1, 1, 1, 1, 1 and the status is a fixed bit of 0 as the first bit as shown in FIG. 6G.
As shown in B, it is composed of 0 to 7, and 0 to 7 are respectively described later, but OPEN, STOP, ACES, AMS, CUE, PL.
AY, NO, DISC and LOW Battery are shown.

In the mode data and the DSP data, 1 bit out of each 4 bits is a check bit, and the second is 0 from the beginning in the mode data and the last is 1 in the DSP mode. In the mode, as shown in FIG. 6C, the first bit DIR is 1 for REW and 0 for FF (FWD),
Pause (also used as PLAY key) and Shuffle
Is 1 and stops at 1 o'clock, and becomes shuffle mode.

In the DSP mode, as shown in FIG. 6D, the first bit is Battery, the next bit is DBB, the next bit is DDS, and 1 is Battery in Battery.
ryEmpty is D when it is 1 in DBB and DDS
Indicates the BB or DDS state. Both DBB and DDS never become 1.

The upper digit indicating the track number is TRACK-
H, and the lower digit is TRACK-L, which is composed of 0 to 9 as shown in E and F of FIG. 6, respectively.

From the remote control 5 side to the CD player 1 side, C
A data update request is made at the falling edge of LK, 1 bit is input bit by bit, and the data is checked at the time when one frame of data shown in FIG. 6G is fetched, and if the data is correct, the data is handled. The displayed information is displayed on the LCD 9. However, if the data is "0" for 15 consecutive bits, all the display is erased and the low voltage mode is set.

On the LCD 9, diversified display patterns as shown in FIGS. 4 and 5 can be displayed corresponding to each mode.

That is, FIG. 4 shows various display patterns on the LCD 9. That is, as described in the status mode of FIG. 6B, when the display output condition is OPEN, all the display is erased. In the STOP mode, the track display 40 indicating the track number is 00 and the disk display 41 is stopped rotating.

The ACES mode is an access mode,
In the track display 40, the access track number is displayed,
As shown in FIG. 5, the disc display 41 has a disc mark 2
The piece 42 is moved every 125 mmS and rotated.

AMS mode is truck change, F
In the F and REW modes, the track display 40 is displayed as a track display, and the two pieces of the disk mark are rotated as in the ACES mode.

Even in the CUE mode, the track display 40 and the disk display 41 rotate like in the ACES mode, and the RE
In W, the disc display 41 rotates in the opposite direction, and the REW display 43 and the FF display 44 are displayed.

In the PLAY mode, the reproduction track number is displayed and the two pieces 42 of the disc mark of the disc display 41 are moved by 250 mmS.

In the LOW Battery mode, only the battery mark 45 is lit, and if the repeat and DSP are on, the repeat display 46, BB and DDS display 47 are individually displayed. Incidentally, the state 48 in FIG. 5 shows the display state for about 1 second immediately after changing from PLAY to STOP.

In this example, the jack 3 for the earphone 6
As described above, by pressing the PLAY key 26, the CPU 8 pushes the line 33 through the line 33 as a measure against the incomplete resetting of the CPU 8 on the remote control 5 side when inserting / removing 0 or when the power is turned on. It is made to be reset. At the time of reset, the display of the LCD 9 is not erased, and the display is not updated until the regular data is obtained.

In the conventional wired remote controller shown in FIG. 8, C is used.
When resetting PU8, LCD9 “OFF”
LC to send a command like
Although D is turned off for a moment and the operator feels uncomfortable, in this example, the LCD off command is not transmitted, so LC
The display of D9 does not momentarily disappear, and the power source 12 for backup is also unnecessary. FIG. 7 shows a flow chart for resetting the LCD 9 so as not to turn it off temporarily.

In FIG. 7, when the CPU 8 of the remote controller is reset in the first step ST ₁ of the start in FIG. 7, the conventional normal CPU 8 is configured so that the hard logic turns the LCD 9 "off". LCD9
Was turned off.

In this example, the soft "off" operation is not performed (second step ST ₂ ).

In the next third step ST ₃ , the RAM attached to the CPU 8 is cleared, and in the fourth step ST ₄ , 1-bit data is input.

In the next fifth step ST ₅ , CLK is set to CP.
The data is output from U8 to the H-CPU2 side and a data update request is made.

In the next sixth step ST ₆ , it is checked whether the transmitted DATA is H or 1. Sixth step ST ₆ seventh step ST ₇ the H or 1 proceeds to a seventh step ST ₇ if H in it is checked whether there 9 times, see the data transmission is inaccurate at the 15 step ST _15, if YES Check and clear the data.

Sixth Step ST₆Is not H or 1
8th step ST₈Go to, whether L or O is 15 times
Is checked, and if YES, 12th step
ST ₁₂And decided that the data was wrong
12th step ST₁₂Clear the data with
Up ST₁₃LCD9 is turned off by and the fourth step ST _Four
Then, the data check of the next 1-bit input is performed.
It

If L or O is not continuous 15 times in the eighth step ST ₈ , the transmission data is regarded as normal, and the data is stored in the RAM in the ninth step ST ₉ .

In the tenth step ST ₁₀ , it is judged whether or not a total of 25-bit data, that is, a 5-bit header for one frame and 20-bit data has been input.
The process returns to step ST ₄ , but if YES, the process proceeds to eleventh step ST ₁₁ .

In the 11th step ST ₁₁ , 25-bit 1
A check is made by checking whether or not the frame data is correct data, that is, a check bit. If not correct, the data is cleared in the 15th step ST ₁₅ , Y
When correct data for one frame is taken in by ES, the data is saved in the display area of the RAM in the 14th step ST ₁₄ , and the data in the display area is displayed on the LCD 9 in the 16th step ST ₁₆ .

According to the wired remote controller of the present invention, by mounting the CPU 8 on the remote controller 5 side, the remote controller L for displaying is displayed.
CD display pattern can be diversified and remote control 5
Even if the CPU 8 on the side is disabled, it is possible to obtain the remote controller 5 that can perform various operations. Although the present invention has been described with respect to a CD player, it is clear that it can be used in a portable cassette tape recorder or the like.

[0051]

According to the wired remote controller of the present invention, since the display CPU on the remote controller side and the key group are independent, it is possible to independently operate the key functions of the remote controller even if the remote controller CPU is destroyed. ..

[Brief description of drawings]

FIG. 1 is a system diagram showing an overall configuration showing an embodiment of a wired remote control device of the present invention.

FIG. 2 is a configuration diagram of remote control means used in the wired remote control device of the present invention.

FIG. 3 is a circuit diagram of remote control means used in the wired remote control device of the present invention.

FIG. 4 is a diagram showing a display pattern of a display means of a remote control means used in the wired remote control device of the present invention.

FIG. 5 is a diagram illustrating a display state of a display pattern of the present invention.

FIG. 6 is an explanatory diagram of a signal format of a communication method used in the wired remote control device of the present invention.

FIG. 7 is a flowchart for explaining a reset method of the present invention.

FIG. 8 is a system diagram showing an overall configuration of a conventional wired remote control device.

[Explanation of symbols]

 1 CD player 2 H-CPU 3,4,13,14,16,17,18 Lead 6 Earphone 8 CPU 9 LCD 10 Key group

Claims (1)

[Claims] 1. A wired remote control device comprising remote control means for remotely controlling the controlled means by a wire, wherein the controlled means and the remote control means both have a microcomputer, The remote control means has a display means for displaying various operations of the controlled means and an operation instruction state of the remote control means, and data of the display means between the controlled means and the microcomputer of the remote control means. Communication is performed and the group of operation instruction keys provided in the remote control means is directly related to the computer of the controlled means independently of the microcomputer in the remote control means. Control device.