JPH0831075A - Function display system - Google Patents

Abstract

PURPOSE:To improve operability and to prevent a malfunction by user. CONSTITUTION:A code signal on a disk is decoded by a frame number decoder 10. The data are supplied to a system controller 11 consisting of a disk discrimination part 11a and an effective display function part 11b. The disk discrimination part 11a discriminates the kind of the loaded disk. The effective display function part 11b to which the discrimination output of the disk discrimination part 11a is supplied, supplies an effective display signal to a display 13, an operation key part 14, a touch panel part 15, a disk kind display part 16, an on-screen display generator 17 and a remote controller transmission/reception part 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a function display system including a remote controller having a plurality of command keys and an electronic device such as a multi-disc player having keys corresponding to the command keys.

[0002]

2. Description of the Related Art For example, a multi-disc player (MD
As P), disks of different sizes such as a compact disk (CD) and a laser disk (LD) can be mounted. A remote controller is used to realize remote operation of the MDP. This remote controller is provided with a plurality of command keys for each loaded disc. Further, a number of keys corresponding to the command keys are also provided on the device body side.

[0003]

The remote controller is provided with a key for each disc, but since only one disc is actually used for reproduction and output, it is recommended to use this disc for this disc. The keys that can be used are limited. For example, the LD used for MDP has a CAV (Const
ant Angular Velosity) Disc and CLV (Constant Li
Near Velosity) disc. Generally, movie and karaoke discs are CLV discs. With CLV discs, functions such as still image playback and multi-speed playback cannot be used. However, still images can be reproduced in the model equipped with the frame memory.

In addition, a recordable / reproducible disc in a mini disc (MD), a reproduction-only disc, a 12-cm disc, a CD-I, a CDV, a CD-G, etc., and its usable functions are difficult to understand at first glance. Is increasing. Moreover, it is expected that such media will increase in the future, and if compatibility is achieved, the number of command keys and the number of keys provided on the device body will increase. Therefore, the use environment of the user is deteriorated.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a function display system capable of displaying only usable command keys and keys on a remote controller and a player in accordance with the type of loaded disc.

[0006]

The present invention comprises a remote controller provided with a plurality of command keys and a multi-disc player provided with keys corresponding to the command keys, and the multi-disc player is loaded into the multi-disc player. Depending on the type of disc, of the command keys provided on the remote controller and the keys provided on the multi-disc player, only the command keys that can control the disc are displayed on the remote controller, and the disc can be controlled. It is a function display system characterized in that only the keys are displayed on the multi-disc player.

[0007]

The code signal decoded by the frame number decoder 10 is supplied to the system controller 11. The system controller 11 includes a disk discriminating unit 11
a and the effective display function unit 11b. The discrimination result of the disc discriminating unit 11a is supplied to the effective display function unit 11b. From the valid display function unit 11b to the display unit 13, the operation key unit 14, the touch panel unit 15, the disc type display unit 16, the on-screen display generator (O
An effective display signal is output to the DG) 17 and the remote controller transmission / reception unit 18. This will only display command keys and keys associated with the loaded disc.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A function display system according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a multi-disc player to which the present invention is applied. 1
Is a disc tray. The disc loaded in the disc tray 1 is chucked and then the spindle motor 2
Is rotated in a predetermined direction. In this case,
The LD shall be loaded. The data recorded on the disc is read by the optical pickup 3. The read video data is FM-demodulated by the FM demodulator 4 to be a signal of NTSC, MUSE, PAL or the like. After that, the time base correction is performed in a TBC (Time Base Corrector) circuit 5, and the video signal is output via an adder 6.

On the other hand, the audio data read by the optical pickup 3 is an LPF (low pass filter).
7 is supplied. The EFM data output from the LPF 7 is decoded by the digital audio decoder 8 into digital audio data. Then, it is converted into an analog audio signal by the D / A converter 9 and output.

By the way, the FM demodulator 4 demodulates a code signal in addition to the video data. This code signal contains various information (CAV
It includes a disc or a CLV disc, a frame number, a chapter number, etc.). These data are the frame number (time code) decoder 10
Is supplied to and decoded. The decoded code signal is supplied to the system controller (syscon) 11. The digital audio decoder 8 decodes TOC (Table Of Contents) information and subcodes in addition to audio data. These data are TO
The data is read by the C / sub code reader 12 and then supplied to the syscon 11.

The system controller 11 comprises a disc discriminating section 11a and an effective display function section 11b. Disk discriminating unit 11
At a, the type of the loaded disc is determined based on the supplied code signal. Based on this determination result, the effective display function unit 11b to the display unit 13, the operation key unit 14, the touch panel unit 15, the disc type display unit 16, the on-screen display generator (O
The effective display signal is supplied to the DG) 17 and the remote control transmission / reception unit 18. As a result, based on the determination result of the system controller 11, only the key related to the loaded disc is lit on the device body and the remote controller. In addition, ODG17
When a valid display signal is supplied to the, the adder 6 superimposes an indication of which key can be used on the video signal output from the TBC circuit 5.

Here, the code signal will be described. In addition to a color video signal and a 2-channel audio signal, a code signal (control signal, address signal and reference signal) is recorded as a digital code within the vertical blanking signal period on the disc because of the special reproduction function of MDP. There is. FIG. 2 is a waveform diagram of a code signal inserted in the vertical blanking period of video data. As described above, the elapsed time and the frame number can be displayed on the screen by inserting the code signal. Also,
Operations such as automatically reproducing a still image on a specific screen and accurately searching for a desired screen can be realized. The code signal includes the 16th, 17th and 18th horizontal scanning lines and the 279th, 280th and 281st horizontal scanning lines in the vertical blanking period.
A 24-bit pulse code is recorded on each horizontal scanning line. Each 24 bits is represented by a 6-digit hexadecimal number divided into 4 bits. Also, the 18th
And the VIRS (Vide
o Interval Reference Signal: Signal for distortion) or V
ITS (Video Interval Test Signal) is recorded.

The code signal includes a CAV code and a CLV.
There is a code for. Common to the two code signals are lead-in, lead-out, picture number, chapter number, and program status codes.
On the other hand, the code for CAV only is a picture stop number code (a still image is automatically displayed on a predetermined screen). The code only for CLV is a CLV code (indicating that it is a CLV disc).

A method for indicating which keys can be used will be described below. First, there is a method in which the display unit 13, the operation key unit 14, the touch panel unit 15, and the disc type display unit 16 are made of liquid crystal, and only usable keys are displayed. Further, there is a method of displaying the vicinity of a usable key with an LED as shown in FIG. 3A or irradiating a backlight from the back of the usable key as shown in FIG. 3B. By applying such a method, which key can be used can be recognized at a glance. Further, as shown in FIG. 4, a method of displaying only usable keys of the liquid crystal touch panel 21 on the front panel of the MDP main body, and further, supplying an effective display signal from the syscon 11 to the ODG 17, as shown in FIG. A method of displaying the usable key 22 on the screen may be considered.

By the way, in order to support the disc loaded in the MDP, the remote controller for the CLV disc and the CA
Two types of remote control are required, a V disk remote control. FIG. 6 is a front view of a CLV / CAV compatible remote controller. This remote controller is a double-sided remote controller that is integrally configured on the front and back sides. For example, FIG. 6A is for a CLV disc,
FIG. 6B is for a CAV disc. As described above, one of the disc type display portions 16 of the MDP main body is turned on by the LED corresponding to the loaded disc. Correspondingly, either the CLV disc remote control or the CAV disc remote control is used. The CDV disc is operated by the CLV disc remote controller. Further, it is considered that CLV discs (karaoke, movies) are frequently used by general users, and CAV discs are rarely used. From this, the CLV disc remote control shown in FIG. 6A is on the surface, and the C shown in FIG. 6B is C.
By arranging the remote controller for the AV disc on the back surface and attaching the outer lid to the remote controller on the rear surface, it is possible to improve the operability and prevent the appearance from being spoiled.

A bidirectional remote controller as shown in FIG. 7 can also be used. In this case, the remote control itself is provided with the disc type display unit 23. This indicates the type of disc currently used. Correspondingly, in the remote control, only usable keys are displayed by LED, for example.

Further, CLV / CAV as shown in FIG.
A compatible remote controller can also be used. In this remote controller, marks corresponding to CLV discs and CAV discs are provided near each key. In FIG. 8, the keys marked with a star are the keys for the CAV disc, and the keys marked with a circle are the keys for the CLV disc. Depending on the type of the loaded disc, the above-mentioned star mark or ○ mark is lit. This allows the user to recognize the usable keys at a glance. By arranging the keys in this way, the key can be made thinner than the remote controller shown in FIG.

[0018]

According to the present invention, it is possible to improve the usability of a remote controller having many command keys. Therefore, when commercializing, it is possible to provide a product that is easy to use. Further, since the operation is simplified, it is possible for the user to reduce the necessity of reviewing the user manual and prevent the user's erroneous operation.

[Brief description of drawings]

FIG. 1 is a block diagram of a multi-disc player to which the present invention is applied.

FIG. 2 is a waveform diagram of a code signal inserted in a vertical blanking period of video data.

FIG. 3 is a diagram for explaining a method of displaying usable keys.

FIG. 4 is a diagram used for explaining a method for displaying usable keys on a multi-disc player.

FIG. 5 is a diagram showing a screen when usable keys are displayed on the screen.

FIG. 6 is a front view of a CLV / CAV compatible remote controller.

FIG. 7 is a front view of the bidirectional remote controller.

FIG. 8 is a front view of a CLV / CAV compatible remote controller.

[Explanation of symbols]

 10 frame number decoder 11a disc discriminating unit 11b effective display function unit 13 display unit 14 operation key unit 16 disc type display unit 17 on-screen display generator 18 remote control transmitting / receiving unit

Claims (2)

[Claims] 1. A remote control device comprising a plurality of command keys, and an electronic device provided with a key corresponding to the command key. The plurality of remote control devices are provided in accordance with a medium loaded in the electronic device. Of the command keys and the keys provided in the electronic device, only the command key capable of controlling the medium is displayed on the remote control device, and only the key capable of controlling the medium is displayed on the electronic device. A function display system characterized by being performed. 2. The function display system according to claim 1, wherein the electronic device is a multi-disc player.