JP2000278769A - Electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow one electronic device to use both a wired remote controller and a wireless remote controller with a simple configuration. SOLUTION: A control section 110 is provided with one port 111 that is used to output and input remote control data, a remote control terminal 123 is connected to the port 111, a transmission means 132 and a reception means 134 are connected via a transmission buffer 131 and a reception buffer 135 so as to obtain a configuration where the state of the reception buffer 135 is switched at least to a high impedance state or an operating state. When the reception buffer 135 is set to the high impedance state, the control section 110 detects the state of the port 111 to discriminate whether a wired remote controller is connected to the terminal 123 and a wired mode or a wireless mode can be set on the basis of the discrimination.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device suitable for application to, for example, a portable audio reproducing device, and more particularly to an electronic device remotely controlled by a remote control device.

[0002]

2. Description of the Related Art Hitherto, various audio reproducing apparatuses and audio recording / reproducing apparatuses capable of reproducing or recording audio data recorded on recording media such as optical disks, magneto-optical disks, and magnetic tapes have been developed. In this case, there is a small-sized portable type, and in the case of such a portable type, there are many types that can be remotely controlled by a remote control device.

That is, for example, in the case of a small portable audio reproducing apparatus, a headphone device is connected to the reproducing apparatus,
In some cases, audio reproduced by the headphone device is listened to, and a remote control device is arranged in the middle of a cable connecting the reproducing device and the headphone device. In this case, communication between the remote control device and the playback device is also performed via a cable, and by operating a key attached to the remote control device,
In addition to being able to control the playback device, a display panel provided in the remote control device displays on the display panel data based on the playback status data supplied from the playback device (for example, track number, playback time, disc name, song name, playback status, etc.). Display).

By providing such a remote control device, remote control of audio equipment can be performed by the remote control device, and operability of the audio equipment is improved. In the case of such a wired remote control device (wired remote control device), its position is limited to some extent because it is integrated with the cable of the headphone device. For this reason, in addition to the wired remote control device, a wireless remote control device can be used for one device, and the device main body can be remotely controlled wirelessly from the wireless remote control device. Proposed.

[0005] FIG. 5 is a diagram showing an example of the configuration of an audio device side in a case where both a wired remote control device and a wireless remote control device can be selectively used in this type of conventional audio device. It is. The system controller 10 of the audio device is control means for controlling each unit of the device.
Here, only the configuration related to the remote control is shown, and other circuits connected to another system controller 10 are omitted.

The system controller 10 has a wired communication port 10a, and the wired communication port 10a is connected to a wired remote control device terminal 11. The wired remote control device connected to the terminal 11 is configured to perform bidirectional communication with the system controller 10 in a time-division manner via a signal line via the terminal 11.
Data to be displayed on the display unit of the remote control device is supplied from the side, and data for controlling the operation of the device is supplied to the system controller 10 from the remote control device side.

[0007] The system controller 10 includes a wireless transmission port 10b and a wireless reception port 1b.
0c, the wireless transmission port 10b is connected to the transmission processing circuit 12, and the system controller 1
0 is subjected to radio transmission processing, and the transmission output is transmitted to antenna 1
3 for wireless transmission. The wireless reception port 10c is connected to a reception processing circuit 14, and the reception processing circuit 14 performs reception processing on a signal received by the antenna 13, and supplies received data to the wireless reception port 10c. The operations of the transmission processing circuit 12 and the reception processing circuit 14 are controlled by data output from the control port 10d of the system controller 10. That is, in the mode using the wireless remote control device (hereinafter, referred to as a wireless mode), both processing circuits 12 and
And output data for operating 14 from port 10d;
In a mode in which the wired remote control device is used (hereinafter, referred to as a wired mode), data that does not activate the processing circuits 12 and 14 is output from the port 10d. Each port 10a, 10b, 10c
Is configured to be supplied with a predetermined bias voltage via resistors R11, R12, and R13.

[0008] With this configuration, in the wired mode, bidirectional communication using the port 10a is performed, and the wired remote control device can be used. In the wireless mode, bidirectional communication is performed using the ports 10b and 10c, so that the wireless remote control device can be used.

[0009]

However, in a conventional electronic device of this type, if both a wired remote control device and a wireless remote control device can be connected, the configuration of the system controller and its surroundings is complicated. Problem. That is, FIG.
In the case of the configuration shown in FIG. 1, the system controller uses four ports 10a, 10b,
10c and 10d are required, which complicates the configuration of the system controller and its peripheral circuits.

In order to avoid the problem of an increase in the number of ports, for example, the configuration shown in FIG. 6 can be adopted. That is, the system controller 20 of the device includes the wired communication port 20a, connects the wired communication port 20a to the wired remote control device terminal 21, and bidirectionally communicates with the remote control device connected to the terminal 21. Is performed. In addition, a wireless communication port 20b is provided.
To the transmission processing circuit 2 via the resistor R23 and the buffer 22.
3 and wirelessly transmits the transmission signal processed by the transmission processing circuit 23 from the antenna 24. Also, the antenna 24
Is supplied to the wireless communication port 20b via the buffer 26 and the resistor R24. Transmission processing circuit 23
The operation of the reception processing circuit 25 is controlled by data output from the control port 20c of the system controller 20. Each communication port 20a, 20b is configured to be supplied with a predetermined bias voltage via resistors R11, R12, R13.

With this configuration, the port for the wireless remote control device is also configured so that one port is used for both transmission and reception, so that the number of ports is one compared to the configuration in FIG. Can be reduced. However, the configuration of FIG. 6 is more complicated than the configuration using only one of the remote control devices.

As another configuration, a configuration shown in FIG. 7 can be adopted. That is, the system controller 3 of the device
0 is one communication port 30a as a communication port
And the communication port 30a is connected to the changeover switch 3
It is connected to one movable contact 31m. The communication port 30a is configured to be supplied with a predetermined bias voltage via a resistor R31.

The first fixed contact 31a of the changeover switch 31
Is connected to the contact portion 32a of the wired remote control device terminal 32. The second fixed contact 31b of the changeover switch 31 is connected to a wireless circuit. Switching of the movable contact 31m of the changeover switch 31
The configuration is controlled by the insertion state of the jack (jack of the remote control device) into the wired remote control device terminal 32. That is, when the jack is inserted into the terminal 32, the contact portion 32a of the terminal 32 comes into contact with the contact 32b, and the movable contact 3
1m is connected to the first fixed contact 31a, and in a state where the jack is not inserted into the terminal 32,
The movable contact 31m of the changeover switch 31 is the second fixed contact 3
1b.

The second fixed contact 31b of the changeover switch 31
As a wireless circuit connected to the communication system, a transmission system circuit and a reception system circuit will be described in common. That is, the second fixed contact 31b is connected to the transmission processing circuit 34 via the resistor R33 and the buffer 33, and the transmission signal output from the transmission processing circuit 34 is wirelessly transmitted from the antenna 35. Also,
The signal received by the antenna 35 is received by the reception processing circuit 36, and the received data output from the reception processing circuit 36 is transferred to the second fixed contact 3 via the buffer 37 and the resistor R33.
1b. Transmission processing circuit 34 and reception processing circuit 3
The operation at 6 is controlled by data output from the control port 30b of the system controller 30.

With this configuration, the changeover switch 31 is switched between the wired side (ie, the first fixed contact 31a side) and the wireless side (ie, the second side) according to the state of insertion of the jack for the wired remote control device into the terminal 32. (Fixed contact 31b side), and only two ports 30a and 30b need to be provided by the system controller 30 for remote control. However, in the case of the configuration shown in FIG. 7, a changeover switch 31 and a terminal 32 that operate in a mechanically interlocked manner are required.
Again, there is a problem that the configuration becomes complicated.

In the above description, the audio device has been described as an example. However, in the case where both a wired remote control device and a wireless remote control device can be used for one device, A similar problem exists in the case of other various electronic devices.

An object of the present invention is to enable both a wired remote control device and a wireless remote control device to be used for one electronic device with a simple configuration.

[0018]

According to the present invention, one port for outputting and inputting data for remote control is provided in a control section, a terminal for remote control is connected to the port, and a transmission buffer and a reception buffer are connected. The transmission means and the reception means are connected via a buffer for use, and the state of the buffer for reception can be selected at least between a high impedance state and an operation state.

According to the configuration of the present invention, when the receiving buffer is in the high impedance state, the control unit detects the state of the port to determine whether or not the terminal is connected to the wired remote control device. Then, based on the determination, a wired mode or a wireless mode can be set.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described.
This will be described with reference to FIGS.

In this embodiment, the present invention is applied to a disk reproducing apparatus as a portable audio apparatus for reproducing an optical disk or a magneto-optical disk on which digital audio data is recorded. 1 and 2 show the configuration of the disc reproducing apparatus 100. FIG. Here, both the wired remote control device 140 and the wireless remote control device 160 can be used in the disc reproducing device 100 of the present embodiment, and FIG. 1 shows an example using the wired remote control device 140, and FIG. Wireless remote control device 16
This is an example using 0. However, in the case of this example, both the wired remote control device 140 and the wireless remote control device 160 cannot be used at the same time, and only one of them is used at the time of operation.

First, a description will be given of a configuration in which a disc is reproduced by the disc reproducing apparatus 100. A disc 101 mounted on the disc reproducing apparatus 100 is driven to rotate by a spindle motor 102, and data read from the disc by an optical pickup 103 is read. The data is supplied to the reproduction processing circuit 104 to demodulate the reproduced data. Spindle motor 10
2. The processing in the optical pickup 103 and the reproduction processing circuit 104 is executed based on the control of the system controller 110.

The reproduced audio data obtained by the reproduction processing circuit 104 is supplied to a digital / analog converter 105 to be converted into an analog audio signal, and the converted analog audio signal is supplied to an analog processing circuit 106 for amplification. And the like, and supplies the processed analog audio signal to the audio output terminal 121 of the terminal unit 120.
The audio data reproduced by the disc reproducing apparatus 100 of this embodiment is actually stereo audio data of two channels on the left and right, but is shown here as one system for simplicity of explanation.

The terminal section 120 of the present embodiment is configured as a jack to which an integrated audio signal plug and remote control plug can be attached.
That is, as shown in FIG. 3, for example, a plug 145 in which a rod-shaped audio plug 146 and a plate-shaped remote control plug 147 are integrated can be mounted. The terminal for remote control of the terminal section 120 (that is, the terminal connected to the plug 147 for remote control) includes a terminal 122 for supplying power (here, +5 V power) to the remote control device, and a bidirectional connection with the remote control device. A terminal 123 for data for communication, a terminal 124 for obtaining key information on the remote control device side, and a terminal 125 for grounding are provided. When the wired remote control device 140 is not connected to the disc reproducing device 100 of this embodiment, the plug of the headphone device can be directly connected to the audio output terminal 121 of the terminal unit 120.

In the disc reproducing apparatus 100 of this embodiment, various operation keys 107 for instructing reproduction and the like are arranged, and operation information of the keys 107 is supplied to a system controller 111 as a control unit. is there.
A display unit 108 composed of a liquid crystal display panel is arranged in the disc reproducing apparatus 100. Under the control of the system controller 111, a display such as a reproduction state (for example, a track number, a reproduction time, a disk name, a song name, a reproduction state Is displayed.

Next, a configuration in which the system controller 110 communicates with the remote control device will be described. The system controller 110 includes a communication port 111 for communicating with a remote control device, and the communication port 111 is connected to a terminal 123. A predetermined bias voltage is supplied to the communication port 111 via the resistor R1. Further, the communication port 111 is connected to the transmission processing circuit 132 via the resistor R2 and the transmission buffer 131,
Further, a reception processing circuit 134 is connected to the communication port 111 via the reception buffer 135 and the resistor R3.

The transmission processing circuit 132 and the reception processing circuit 134
Is connected to the antenna 133, and the transmission processing circuit 1
The transmission signal output from the antenna 32 is wirelessly transmitted from the antenna 133, and the signal received by the antenna 133 is received by the reception processing circuit 134. The transmission operation of the transmission processing circuit 132 and the reception operation of the reception processing circuit 134 are controlled to an operation state or a non-operation state by data output from the transmission / reception control port 114 of the system controller 110. Further, the transmission processing circuit 13 of the present example
The output of the transmission signal from the reception processing circuit 2 and the output of the reception signal from the reception processing circuit 134 are performed in a time-division manner based on a predetermined format.

As the receiving buffer 135 of this embodiment, a so-called three-state buffer that can be controlled to three states, an operating state, a non-operating state, and a high impedance state, is used. Is controlled by a signal obtained at the port 113 for use.

The system controller 110 of the present embodiment
Is provided with a key information port 112 and is connected to the terminal 124 of the terminal unit 120. Key operation information from a wired remote control device 140 described later is supplied to the key information port 112.

Next, the configuration of the wired remote control device 140 connected to the playback device 100 will be described with reference to FIG. As shown in FIG. 1, the wired remote control device 140 is used by being connected to the terminal unit 120 of the playback device 100. The remote control device 140 includes a controller 141 for controlling the inside of the remote control device,
The control unit 1 includes a display unit 142 for displaying various information, a key 143 for operating the playback device, and a jack 144 to which a headphone device plug is connected.

The controller 141 and the display unit 142 are operated by the power supplied from the terminal 122 of the reproducing apparatus 100. The display unit 142 is composed of display means such as a liquid crystal display panel, and displays the same information as the display unit 108 on the main body of the playback apparatus (for example, display of track number, playback time, disc name, song name, playback state, etc.). Is performed. The key 143 is connected, for example, between the terminal 121 and the terminal 125 of the terminal section 120 (that is, between the power supply potential section and the ground potential section), and is obtained at the terminal 124 based on the operation state of the key 143. Potential (ie, key information port 11 of system controller 110 on the playback device side)
2 is changed so that the system controller 110 can detect the operation state. The jack 144 has a headphone device 150
Are connected, and sound is output from the left and right speaker units 151 and 152 of the headphone device 150.

Next, the configuration of a wireless remote control device 160 for remotely controlling the playback device 100 will be described with reference to FIG. The wireless remote control device 160 has an antenna 1
61, a reception processing circuit 162 for receiving and processing the signal received by the antenna 161, and a transmission processing circuit 166 for processing a signal transmitted by the antenna 161. Wireless transmission via the antenna 161 is performed between a circuit connected to the antenna 133 of the disk reproducing apparatus 100. As a frequency band used for the wireless transmission here, for example, a 240 MHz band is used, and its transmission output is a relatively weak output, and the distance between the disc reproducing device 100 and the remote control device 160 is 1 to 1. It is assumed that wireless transmission is possible within a range of about 2 m.

The reception processing circuit 162 and the transmission processing circuit 166
Is connected to a system controller 163 that controls the operation in the remote control device. The system controller 163 is connected to a display unit 164 for displaying a reproduction state and the like, and a key 165 for instructing a reproduction operation and the like. The display unit 164 uses a display unit such as a liquid crystal display panel, and is connected to the display unit 108 on the playback apparatus main body side.
Display of information similar to (for example, track number, playback time,
(Display of disc name, song name, playback state, etc.). Further, a battery for supplying power for operating the wireless remote control device 160 is built in.

FIG. 3 shows an example of the use state of the disk reproducing device 100, the wired remote control device 140, and the wireless remote control device 160.
Shown in The disc reproducing device 100 has a terminal portion 120 and a plug 14 of the wired remote control device 140.
5 are connected as shown by the arrow a.
In this case, the wired remote control device 140
The headphone jack 150 of the
Is connected, the headphone device 150 is connected to the disc reproducing device 100 via the wired remote control device 140. The key 143 of the wired remote control device 140 is configured to be capable of rotating in both the left and right directions as indicated by arrow b and pressing down in the direction indicated by arrow c. Thus, various operation instructions of the reproducing apparatus 100 can be performed, and various displays such as characters and figures are performed on the display unit 142.

Also, the wireless remote control device 160 has a display unit 164 and keys 165 similarly to the wired remote control device 140, so that various displays on the display unit 164 and various operation instructions with the keys 165 can be performed. I can do it. However, in the case of this example, when the wired remote control device 140 is connected to the terminal unit 120 of the disc reproducing device 100, only this wired remote control device 140 can be used as a remote control device, and The wireless remote control device 160 can be used only when the wired remote control device 140 is not connected.

In order to realize the selective use of the remote control device, in the case of the present embodiment, the state of the terminal 123 of the terminal section 120 of the disc reproducing device 100 is changed by the system controller 110 in the disc reproducing device 100. This is a configuration for determining.

Next, both remote control devices 14
A process for realizing the selective use of 0 and 160 will be described with reference to the flowchart of FIG. First, the system controller 110 periodically changes the state of the reception buffer 135 to a high impedance (Hi-Z) state by a signal output from the buffer control port 113 (step S11). In this state, the communication port 111 is set as an input port (step S12), and the state of the port 111 is determined by the system controller 110 (step S13).

Here, it is determined whether the state of the port 111 is the low level signal “L” or the high level signal “H”. When the wired remote control device 140 is connected to the terminal 123, Even if the state of the receiving buffer 135 is set to the high impedance state, the state of the port 111 becomes the low level signal “L” because the circuit of the wired remote control device 140 is connected. Therefore, when it is detected that the signal is the low level signal “L” in step S13, it is determined that the wired remote control device 140 is connected, and the state of the receiving buffer 135 is maintained at high impedance. Then, two-way communication with the wired remote control device 140 is started in a time sharing manner (step S14). The communication is performed until it is determined in step S15 that the wired remote control device 140 has been disconnected from the terminal unit 120, and when it is determined in step S15 that the wired remote control device 140 has been disconnected, the process returns to step S11. During the communication with the wired remote control device 140 in step S14, the processing operation in the transmission processing circuit 132 and the reception processing circuit 134 is stopped by a signal from the transmission / reception control port 114.

When it is determined in step S13 that the signal is a high level signal "H", the reception buffer 13
5 is high impedance and is in a state in which nothing is connected to the terminal 123. Therefore, it is determined that the wired remote control device 140 is not connected, and the receiving buffer 135 is set to an operating state (active state). The transmission processing circuit 132 and the reception processing circuit 134 are also set in the operating state by the signal from the transmission / reception control port 114, and communicate with the wireless remote control device 160 (step S16). Then, it is determined whether or not bidirectional communication of one packet has been performed (step S17), and the process returns to step S11 every time communication of one packet is performed. Here, one packet communication indicates a state in which one unit of transmission and one unit of reception are performed.

Therefore, when communicating with the wireless remote control device, every time one packet is communicated, the process of setting the receiving buffer to a high impedance state in step S11 is performed, and the wired remote control device is connected. It is checked whether it has been done.

In step S14, the data structure for the system controller 110 to input and output in a time-division manner for the wired remote control device via the port 111 in the step S14, and in step S17, the system controller 110 The configuration of data to be input and output in a time sharing manner for the remote control device is different here, and data input / output corresponding to each communication is performed.

As described above, according to the disk reproducing apparatus of the present embodiment, the buffer 135 for receiving a radio signal is controlled to a high impedance state as needed, and it is confirmed whether or not the wired remote control device 140 is connected. When the control device 140 is not connected, the wireless remote control device 1
The remote control device 160 communicates with the remote control device 60 to execute wireless remote control and display of various information on the remote control device 160.
When the remote control device 140 is connected to the remote control device 140, the remote control device 140 communicates with the wired remote control device 140 to perform remote control by wire and display various information on the remote control device 140. , 160 can be selectively used well.

In this embodiment, only the communication port 111 is required as the port provided by the system controller 110 for communication with the remote control device.
With a simple configuration having only one port, communication with both wireless and wired remote control devices can be selectively performed. Further, in addition to the communication port 111, it is only necessary to add a configuration for controlling the reception buffer 135 by the buffer control port 113.
With a simpler configuration than before, selective communication with both wireless and wired remote control devices can be performed.

In the embodiment described above, the present invention is applied to a disk reproducing apparatus for reproducing an optical disk or a magneto-optical disk on which audio data is recorded. Needless to say, the present invention can also be applied to a recording / reproducing apparatus having a function of performing and a function of reproducing. In addition to the disc reproducing device and the recording device, the present invention can be applied to other electronic devices as long as both the wireless remote control device and the wired remote control device are selectively used. is there.

[0045]

According to the first aspect of the present invention, the receiving buffer can be selectively controlled between the high impedance state and the operating state, so that the state of judging the state of the communication port and the communication port can be controlled. A state in which communication is performed in the wired mode or the wireless mode can be set, and the wired mode and the wireless mode can be appropriately set with a simple configuration in which one port is used for both the wired mode and the wireless mode.

According to the second aspect of the present invention, in the first aspect of the present invention, after the selecting means sets the state of the receiving buffer to the high impedance state, the control unit detects the voltage level of the port, If the detected level is the first
Is set to perform data input / output for wireless when the voltage level is equal to, and set to perform data input / output for wired when the second voltage level is lower than the first voltage level. By doing so, each mode setting can be reliably performed based on the voltage level detection.

According to a third aspect of the present invention, in the second aspect of the invention, the control unit is means for controlling recording and / or reproduction of the recording medium, and the data output from the port is used for recording data. Data related to recording and / or reproduction of a medium, and data input to a port is data for controlling recording and / or reproduction of a recording medium, and is a device that performs recording and / or reproduction of a recording medium. It is easy to selectively use both a wired remote control device and a wireless remote control device as the remote control device.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of a configuration according to an embodiment of the present invention (an example in which a wired remote control device is connected).

FIG. 2 is a block diagram showing an example of a configuration (an example in which a wireless remote control device is connected) according to an embodiment of the present invention.

FIG. 3 is a perspective view showing an example of the shape of a device according to an embodiment of the present invention.

FIG. 4 is a flowchart illustrating a communication processing example according to an embodiment of the present invention;

FIG. 5 is a configuration diagram showing an example (part 1) of a configuration for performing communication with a conventional remote control device.

FIG. 6 is a configuration diagram showing an example (part 2) of a configuration for performing communication with a conventional remote control device.

FIG. 7 is a configuration diagram showing an example (part 3) of a configuration for performing communication with a conventional remote control device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 100 ... Disc reproduction apparatus, 110 ... System controller, 111 ... Communication port, 112 ... Key information port, 113 ... Buffer control port, 114 ... Transmission / reception control port, 120 ... Terminal part, 131 ... Transmission buffer, 132 ... Transmission processing circuit, 134 ... Reception processing circuit, 1
35: reception buffer, 140: wired remote control device, 150: headphone device, 160: wireless remote control device

Claims (3)

[Claims] A predetermined control unit having a port for outputting and inputting data for remote control; voltage applying means for applying a predetermined voltage to the port; a remote control terminal connected to the port; A transmission buffer connected to the port, a transmission unit for wirelessly transmitting an output of the transmission buffer, a reception unit for receiving a radio signal, an output of the reception unit is supplied, and the output is supplied to the port. An electronic device comprising: a receiving buffer for performing the above operation; and selecting means for selecting at least a high impedance state and an operating state of the receiving buffer. 2. The electronic device according to claim 1, wherein said selection means sets a state of said reception buffer to a high impedance state, and said control unit detects a voltage level of said port, and detects the detected level. Is the first voltage level, the port outputs and inputs data for wireless transmission and wireless reception using the transmission means and the reception means, and the detected level is the first voltage level. An electronic device configured to output and input data for a device connected to the remote control terminal when the second voltage level is lower than the second voltage level. 3. The electronic device according to claim 2, wherein the control unit is means for controlling recording and / or reproduction of a recording medium, and the data output from the port is configured to control recording and / or reproduction of the recording medium. Or electronic data which is data related to reproduction and data input to the port is data for controlling recording and / or reproduction of the recording medium.