JP2002314920A - Voice image playback system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple structure and reduce the development cost and the production cost by omitting a special input dividing means and a playback control information exclusive memory means at a voice image reproducing unit independently separated from a conventional medium playback system. SOLUTION: The voice image playback system includes an input dividing means 4 for dividing the input into a playback information receiving means 2 and a playback control information receiving means 3, and a common memory means 5 for writing the output from the playback information receiving means 2 and the playback control information receiving means 3, so the structure is simplified, and the memory means exclusive for the reproduction control information is omitted, and the catch-up of the playback control information receiving means 3 to the decoding means becomes easy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio / video reproducing apparatus in which a data reading section and a reproducing section are separated.

[0002]

2. Description of the Related Art In recent years, an audio / video reproduction system using an optical disk or a hard disk has been realized, and its demand has been expanding. These have the aspect of mass storage media,
The market as a medium for computer use has also been established. For this reason, by combining the existing medium reading device and the independently separated audio / video reproduction unit, an audio / video reproduction device using them can be easily constructed.

[0003] A conventional independent separation type audio / video reproduction apparatus will be described below.

FIG. 3 is a block diagram of a conventional independent and separate type audio / video reproducing apparatus. In FIG. 3, reference numeral 100 denotes an interface for input data, 101 denotes storage for storing reproduction control information of the input data, and 102 denotes reproduction. Decoding / reproducing means having information as input, 103 is a microprocessor for controlling the decoding / reproducing means 102 based on the reproduction control information, and 104 is a storage means used as a frame memory when decoding audio and images.

[0005] The operation of the audio / video reproducing apparatus configured as described above will be described.

[0006] Playback control of DVDs, Video-CDs and the like generally includes a mechanism for selecting content to be played back using a menu or the like. This mechanism is indispensable as a reproduction control method for a storage medium, particularly a medium having random access properties, and is highly versatile.
The mechanism is linked to the audio-visual information for the menu and the menu selection number during playback of the audio-visual information,
This is realized by having reproduction control information such as a read address table and the like on a medium for a menu and content.

The interface unit 100 transfers the reproduction control information to the storage unit 101 under the instruction of the microprocessor 103 based on the input data, and transfers the audio / video information to the decoding device. The microprocessor 103 stores the storage means 10
Decoding and reproducing means 10 based on the reproduction control information stored in
2, the decoding and reproducing means 102 decodes and reproduces the input audiovisual information.

[0008]

However, in the above-mentioned conventional configuration, special interface means and storage means dedicated to reproduction control information are provided, resulting in an increase in development and manufacturing costs.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to simplify the configuration and make it more versatile, and to solve these problems.

[0010]

To achieve this object, an audio / video reproducing apparatus according to the present invention comprises: a reproduction information receiving unit for receiving reproduction information; a reproduction control information receiving unit for receiving reproduction control information; Playback information receiving means, input distribution means for distributing inputs to the reproduction control information receiving means, storage means, and writing means for writing output data from the reproduction information receiving means and the reproduction control information receiving means to the storage means; And reading means for reading data from the storage means.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 is a block diagram of an audio / video reproducing apparatus according to a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes decoding / reproducing means, 2 denotes reproduction information receiving means,
3 is a reproduction control information receiving means, 4 is an input distribution means, 5
Is a storage means, 6 is a writing and reading means of the storage means, 7 is a microprocessor, and 8 is a decoder.

The operation of the audio / video reproducing apparatus according to the present embodiment configured as described above will be described below.

First, when starting reproduction of independent reproduction information, the microprocessor 7 issues an initialization command to the decoding / reproduction means 1. When the decryption / reproduction means 1 receives the initialization command, the input distribution means 4 sets the distribution destination in the reproduction control information reception means 3. Microprocessor 7
Reads the reproduction control information and transfers it to the decryption / reproduction means 1.

The reproduction control information is received by the reproduction control information receiving means 3 and written into the storage means 5 by the writing and reading means 6. When the reading of the reproduction control information is completed, the microprocessor 7 issues a normal reproduction command to the decoding / reproduction means 1. When the decryption / reproduction means 1 receives the normal reproduction command, the input distribution means 4 sets the distribution destination in the reproduction information reception means 2.

The microprocessor 7 reads the reproduction information and starts transferring the reproduction information to the decoding / reproduction means 1. Further, the microprocessor 7 reads out the reproduction control information written in the storage means 5 at any time by using the writing and reading means 6,
Perform playback control.

As described above, according to the present embodiment, the storage means for the reproduction information and the reproduction control information can be shared, and the decoding / reproduction means incorporating the reproduction control information receiving means is developed and generalized. Thus, development and manufacturing costs of the entire system can be reduced.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to the drawings.

In the first embodiment, when a plurality of pieces of independent playback information are to be played back seamlessly, initialization cannot be realized because the entire decoding / playback means 1 is performed.
In the present embodiment, the reproduction information is reproduced seamlessly.

FIG. 2 is a block diagram of an audio / video reproducing apparatus according to a second embodiment of the present invention. In FIG. In FIG. 2, the same parts as those in FIG. 1 are denoted by the same reference numerals.

The operation of the audio / video reproducing apparatus according to the present embodiment configured as described above will be described below.

First, the decryption / reproduction means 1 is in a normal reproduction state, and the input distribution means 4 distributes an input to the reproduction information receiving unit 2. After inputting all the reproduction information, the microprocessor 7 first reproduces the new reproduction information.
Initializes only the input distribution means 4 using the initialization means 9. As a result, the input distribution unit 4 distributes the input to the reproduction control information receiving unit 3.

The microprocessor 7 reads the reproduction control information for the new reproduction information and transfers it to the decoding / reproduction means 1. Thereafter, the microprocessor 7 executes the decoding and reproducing means 1
To the normal playback state. As a result, the input distribution unit 4 is in a state of distributing the input to the reproduction information receiving unit 2. The microprocessor 7 reads the reproduction information and starts transferring the reproduction information to the decoding / reproduction means 1.

As described above, according to the present embodiment, the storage of the reproduction information and the reproduction control information can be shared, and the decoding / reproduction means incorporating the reproduction control information receiving means is developed and generalized. Thus, development and manufacturing costs of the entire system can be reduced. Further, a plurality of independent pieces of reproduction information can be reproduced seamlessly.

[0025]

As described above, according to the present invention, it is possible to realize an audio / video reproducing unit which is independent and separate from the existing medium reading device with a simple configuration, and the development and manufacturing costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram of an audio / video reproduction device according to a first embodiment of the present invention.

FIG. 2 is a block diagram of an audio / video reproduction device according to a second embodiment of the present invention;

FIG. 3 is a block diagram of a conventional audio / video reproduction device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Decoding / reproducing means 2 Reproduction information receiving means 3 Reproduction control information receiving means 4 Input distribution means 5 Storage means 6 Writing / reading means 7 Microprocessor 8 Decoder 9 Initialization means

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C052 AA03 AB04 DD04 DD06 5D044 AB05 AB07 BC03 CC06 DE49 FG10 FG18 HH05

Claims (2)

[Claims] 1. A reproduction information receiving means for receiving reproduction information;
Reproduction control information receiving means for receiving reproduction control information; input distribution means for distributing inputs to the reproduction information receiving means and the reproduction control information receiving means; storage means; the reproduction information receiving means and the reproduction control information reception Writing means for writing output data from the means to the storage means;
Reading means for reading data from the storage means, wherein the input distribution means is set to distribution to the reproduction control information reception means at initialization, and is normally set to distribution to the reproduction information reception means at initialization. An audio-video reproduction device characterized by the above-mentioned. 2. The audio / video reproducing apparatus according to claim 1, further comprising independent initialization means for initializing the input distribution means.