JPH05314743A - Cd reproducing device - Google Patents

Abstract

PURPOSE:To provide a CD reproducing device which performs a process matching a disk currently in reproduction when the CD reproducing device is switched to a TV tuner part as another reproduction part during the CD reproduction. CONSTITUTION:When the switch of TV is turned ON during the CD reproduction, a CPU 6 is interrupted and current track position information on the CD is stored in a RAM 16; and different processes are performed by respective application programs of CD-DA, CD-I, and EB according to information obtained from a disk decision part 15 and the information stored in the RAM.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention uses a CD as a recording medium,
The present invention relates to a CD reproducing device as a multimedia device having a built-in TV tuner.

[0002]

2. Description of the Related Art In a conventional apparatus, even when a TV switch for instructing a television (hereinafter referred to as TV) display is turned on during CD reproduction, CD reproduction is still continued (CD reproduction here). Is the state in which the data is read from the CD and the application software is being executed).

[0003]

SUMMARY OF THE INVENTION In the above conventional technique,
If the TV switch is turned on during CD playback, the type of disc currently being played, that is, CD-D
CD regardless of A, CD-I, EB (electronic book)
Reproduction was continued. Therefore, after that, when the TV switch is turned off, the continuity of the CD reproduction cannot be maintained, and the processing suitable for each disc cannot be performed.

The present invention solves the above problems by
An object of the present invention is to provide a CD reproducing device which, when the TV tuner is switched off during D reproduction, brings the CD reproduction state corresponding to the type of the CD being reproduced when the TV tuner is turned off.

[0005]

In order to achieve the above-mentioned object, the present invention provides information on the track position information of a CD when the TV display is selected during CD reproduction and information on the type of the CD discriminated by the disc discriminating section. Based on the installed CD
It has a configuration for performing re-reproduction processing according to the type of.

[0006]

With the above-described structure, the present invention enables processing suitable for each application of the currently playing CD when the TV switch is turned on during playing of the CD.

[0007]

1 is a block diagram of a multimedia device according to an embodiment of the present invention. 1 is a CD mechanism unit, 2 is a CD mechanism control unit, 3 is a data decoding unit, 4 is a voice control unit, 5 is a voice output unit, 6 is a CPU, 7
Is a ROM, 8 is an image control unit, 9 is an image display unit, and 10 is a T
V tuner section, 11 is a TV display selection section for controlling a TV switch, 12 is an analog switch for switching between a CD signal and a TV signal, and 13 is a TV showing the state of the TV display selection section.
A selection flag, 14 is a power control unit that supplies power to the device,
Reference numeral 15 is a disk discriminating unit, and 16 is a RAM. Hereinafter, the mutual relation and operation of each element of the apparatus having the above-described components will be described.

When the TV display is selected by the TV display selection unit 11 during the reproduction of the CD, the TV selection signal is input to the CPU 6 as an interrupt signal. When the CPU 6 receives the interrupt signal, it executes an interrupt process as shown in FIG.

FIG. 2 is a flowchart of interrupt processing. CP based on the information obtained from the disc discrimination unit 15
U6 determines the type of application currently being reproduced (step 2-1). Judgment result, CD-D
If A, process 1 is executed (step 2-2), and CD
If -I, process 2 is executed (step 2-3), and E
If B, process 3 is executed (step 2-4).

The processing when the CD-I or EB application is being reproduced, that is, the contents of processing 2 and processing 3 will be described below. FIG. 3 is a flowchart of the process 2 or 3. The CPU 6 instructs the data decoding unit 3 to stop reading the data (step 3-
1). Next, data relating to the track position of the CD required for returning to the current CD reproduction position is stored in the RAM 16 (step 3-2). Next, the analog switch 12
The output signal of is switched to the signal input from the TV tuner unit 10 (step 3-3). After that, the TV selection flag 13 monitors whether or not the TV display is canceled in the TV display selection unit 11 (step 3-4). When the cancellation of the TV display is detected (step 3-5), the RAM 16
The processing for the peripheral device is executed according to the data stored in (step 3-6), and the output signal of the analog switch 12 is switched to the input signal from the audio controller 4 and the image controller 8 by CD reproduction (step 3-7). ).

When the CD-DA application is being reproduced, that is, the contents of the process 1 will be described below.
FIG. 4 is a flowchart of the process 1. The CPU 6 instructs the data decoding unit 3 to stop reading the data (step 4-1). Next, the data concerning the track position of the CD required for returning to the current CD reproduction position is stored in the RAM 16 (step 4-2). Next, the output signal of the analog switch 12 is switched to the signal input from the TV tuner section (step 4-3). afterwards,
The key input of the CD mechanism control unit 2 for controlling the CD-I application is monitored (step 4-4). The types of this key are shown in FIG. 20 is the first 1 of the song being played
Alternatively, a backward skip key for instructing reproduction from the beginning of the previous song, 21 a forward skip key for instructing reproduction from the beginning of the next song of the song being reproduced, and 22 for reproduction instructing reproduction of the song. A key 23 is a stop key for instructing to stop the reproduction of the music. When there is a key input, it is determined which key is pressed (step 4-5). After that, processing is performed according to each key.

When the playback key 22 is pressed, first the CD-
The reproduction of DA is started (step 4-6). Next, the output of the analog switch 12 is switched to the input signal from the voice control unit 4 (step 4-7). After that, the TV display selection unit 11 displays whether the TV display is canceled or not.
The selection flag 13 is used for monitoring (step 4-8).

When the stop key 23 is pressed, it is judged whether or not reproduction is in progress (step 4-9), and if reproduction is in progress, stop processing is performed (step 4-10). And CD
Data relating to the track position of the CD required for returning the reproduction is stored in the RAM 16 (step 4-11).
Next, the output of the analog switch 12 is switched to the input signal from the TV tuner section (step 4-12). Then, the TV selection flag 13 monitors whether or not the TV display is canceled in the TV display selection unit 11 (step 4-8).

When the backward skip key 20 is pressed,
It is judged whether or not it is being reproduced (step 4-13),
If reproduction is in progress, reverse skip processing is performed (step 4-14). Then, in the TV display selection unit 11, the TV
The TV selection flag 13 monitors whether or not the display has been canceled (step 4-8).

When the forward skip key 21 is pressed,
It is judged whether or not it is being reproduced (step 4-15),
If reproduction is in progress, forward skip processing is performed (step 4-16). Then, in the TV display selection unit 11, the TV
The TV selection flag 13 monitors whether or not the display has been canceled (step 4-8).

When the cancellation of the TV display is detected (step 4)
-8), it is determined whether or not the CD is currently being reproduced (step 4-17). During reproduction, the output signal of the analog switch 12 is switched to the input signal from the audio controller 4 and the image controller 8 by CD reproduction (step 4-19),
Terminates interrupt processing. RAM1 if not playing
Processing for the peripheral device is executed by the data stored in 6 (step 4-18), and the output signal of the analog switch 12 is reproduced by the audio controller 4 and the image controller 8 by CD reproduction.
To the input signal (step 4-19), and the interrupt processing ends.

When the interrupt processing is completed, that is, the TV
When the display is released, the CD-I application and EB
In the case of an application, CD reproduction is executed from the image display unit 9 and the audio output unit 5 in a state before TV display is performed. In the case of the CD-DA application, the reproduction is started from the state before the TV switch is turned on or the state before the stop key is pressed.

As described above, according to this embodiment, when the TV is selected during the reproduction of the CD, the CD track position at that time is stored in the RAM, and when the CD is switched again, the C
Since control is performed so that the desired track is sought according to the type of D, a CD reproduction state corresponding to the type of CD can be achieved.

[0019]

As is apparent from the above embodiments, according to the present invention, the CPU stores the CD track position when the TV is selected in the memory and controls the seek of the track and the switching of the analog switch when the CD is reproduced again. If the TV display is selected during CD reproduction, the subsequent processing can be automatically changed according to the type of the disc being reproduced, and the operability is improved. That is,
When the disc being reproduced is a CD-I or EB application, when the TV display is canceled thereafter, the CD is reproduced from the state before the TV display is selected. Therefore, the continuity of CD reproduction is maintained for the user even when watching TV temporarily. In addition, since the previous display environment is immediately provided after switching from TV to CD reproduction, useless operations can be omitted. Further, when the disc being played back is a CD-DA application, it is possible to provide a CD playback device that has the effect of switching only the audio output to the audio for CD-DA playback even during TV playback.

[Brief description of drawings]

FIG. 1 is a block diagram of a multimedia device according to an embodiment of the present invention.

FIG. 2 is a flowchart of interrupt processing when TV display is selected in the TV display selection unit of the same device.

FIG. 3 is a flowchart of processing 2 and processing 3 executed in the same apparatus when a CD-I or EB disc is used.

FIG. 4 is a flowchart of processing 1 executed when the apparatus is a CD-DA disk.

FIG. 5 is an explanation of types of keys for controlling a CD-DA application in the same device.

[Explanation of symbols]

 1 CD mechanism section 2 CD mechanism control section 3 Data decoding section 5 Audio output section 6 CPU 7 ROM 9 Image display section 10 TV tuner section 11 TV display selection section

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H04N 5/93 Z 4227-5C

Claims (1)

[Claims] 1. A CD reproducing means for reading data from a CD, a TV signal reproducing means, the CD reproducing means or a TV.
An image display unit for displaying image data input from the signal reproducing unit, an audio output unit for outputting audio data input from the CD reproducing unit and the TV signal reproducing unit, and a TV display of the image display unit are selected. A TV display selection unit, a disc discrimination unit that discriminates whether a disc to be reproduced is a CD-DA, a CD-I, or an electronic book, and a TV display is selected in the TV display selection unit during CD reproduction. At this time, a storage unit that stores the CD reproduction position information at the time of selection, and a CPU that sets the CD reproduction processing state according to the type of the CD mounted when the TV display is canceled in the TV display selection unit And a means for including a CD reproducing apparatus.