JPS62234288A - Player system - Google Patents

Abstract

PURPOSE:To execute the random access of a desired scene and information by registering the scene to be viewed again and the necessary information out of the disk information to a memory card inserted into a device. CONSTITUTION:A reproducing signal ES outputted from an optical system 40 is sent to a reproducing signal processing part 52, a video and a sound signal VS are reproduced, the code such as a chapter number and a track number is reproduced and sent to a system control part 54. When a RAM card 30 is inserted and a writing button 20 of a keyboard 56 is pushed, a control part 54 successively writes the number code of a chapter and a track through a writer/reader 58 to a RAM card 30. When a reading button 22 is pushed, the control part 54 reads the recording of the RAM card 30 and executes successively the access from the first code.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a player system for optical discs, video discs, etc., and in particular uses a simple system configuration to manage scenes that you want to see again and necessary information, and to immediately display them at any time. It has been devised so that it can be searched easily.

(Prior Art) Recently, disc player systems that reproduce images and audio simultaneously have become popular. There are various playback methods for this system, such as an optical disk method (laser non-contact readout) and a capacitive disk method (needle contact readout), but all of these methods use disks with extremely high density storage capacity.
Random access allows you to quickly find the scene you want to see or the information you need, allowing viewers to select programs based on their wishes, not only movies and music videos, but also education, training, games, etc. It has been used a lot.

Now, the above-mentioned random access is generally performed in the form of a chapter search, trunk search, or the like.

In the chapter search, when a desired chapter is selected by inputting a chapter number from the keyboard, the beginning of the chapter is searched. Note that a chapter is a "chapter" and means a division of each program or song list, and a chapter number is a serial number assigned to each such chapter division.

Furthermore, in the trunk search, when a desired track is selected by inputting a trunk number from a keyboard, that track is searched and displayed. Here, a track usually includes data for one screen (one frame) for one revolution of the disk, and is sometimes called a frame. Therefore, the track number (frame number) is a serial number assigned to each such track (frame) division.

(Problems to be Solved by the Invention) As mentioned above, the conventional disc player system has the following problems.
There are chapter search and track search functions that allow you to quickly find the scene you want to see or the information you need, but these only work effectively if you know the chapter number or track number at the time. There was the inconvenience of not being able to search.

For example, it is often the case that the user wants to rewatch a scene that has been viewed several times, but unless the user remembers the chapter number or trunk number of that scene, the user cannot use the chapter search or track search. In fact, even if you remember something the last time you saw it, you forget it after a week or a month passes.

Therefore, in such a case, the user must use fast-forward mode to send the video forward or backward at high speed and visually search for the desired scene. However, the number of discs used in this type of player system is 24,000 or 54,000.
It is possible to record up to one still image, and searching for a desired scene while fast-forwarding through such an extremely large amount of recorded content is quite tedious and tiring, and the search takes a long time.

It is also possible to use a personal computer to manage necessary scenes and information, but in that case, a program for that management must be created, which is complicated to handle, and above all, It is not suitable for general users because the overall system price is high.

The present invention has been made in view of the above-mentioned problems, and provides a player system with a simple system configuration that allows you to manage scenes you want to see again and necessary information and search for them instantly at any time. The purpose is to

(Means for Solving the Problems) The configuration of the present invention that achieves the above object is to load a recording medium in which data is recorded in each predetermined section, access an arbitrary section, read and reproduce the data. In a player system equipped with a random access function, a key means for specifying a desired classification; a memory card mounting means for removably mounting a memory card; and a code for the classification designated by the key means is written in the memory card. classification code writing means; classification code reading means for reading the classification code from the memory card; access control means for decoding the classification code read by the classification code reading means and accessing the classification indicated by the code. It is characterized by comprising: and;

In the present invention, the term "section" refers to a division of data in terms of content, and includes, for example, a chapter, track, or frame.

Furthermore, a memory card is a card that has the function of recording data electrically, optically, or magnetically, such as a RAM card, ROM card, or IC card.

Includes laser cards, magnetic cards, etc.

(Function) Play the recording medium with the memory card installed,
If there is a scene or necessary information in the recorded information that you would like to see again later, you can operate the key means. Then,
The section code writing means operates to write the code of the section (for example, chapter or trunk, etc.) relating to the scene or information to the memory card. In this way, it is possible to register on the memory card information that suits one's tastes and needs from among a huge amount of recorded information. Then, when the memory card is inserted and an appropriate switch or key is operated, the classification code reading means reads the code of a certain classification registered in the memory card, and the access control means decodes the code and determines the access-related code. A predetermined control signal is sent to each section to perform random access to the corresponding section. In this way, if it is registered in the memory card, you can immediately search for it without knowing the number of the desired category.

Note that writing (registration) or continuous access (random access) can be performed at various locations by carrying the memory card.

(Embodiment) An embodiment in which the present invention is applied to an optical disc player system will be described below with reference to FIGS. 1 to 3.

FIG. 1 shows the entire panel section of the optical disc player system. Reference numeral 12 denotes a disk insertion slot through which a disk (not shown) is loaded into the main body 10. Reference numeral 14A is a chapter selection button, and when a search button 14C and this button 14A are pressed and a chapter number is inputted using the numeric buttons 16, that chapter is randomly accessed. Also, 14B is a track (frame)
With the selection button, search button 14C and this button 14B
If you press , then enter the trunk number using the number buttons 16, that track will be randomly accessed. 14D to 14F are a stop button, a fast forward button, and a still/frame forward button, respectively. Above key 1
4A-14F.

Reference numeral 16 is also provided in conventional player systems of this type, and various other conventional keys (not shown) are also provided.

18 is a RAM card insertion slot according to this embodiment, and R is inserted here.
The AM card 30 is inserted manually. 20
is a write button, and when you press this button, the code of the currently selected (accessed) chapter or track is written to the RAM.
The information is written to the card 30. and,
22 is a read button, and when you press this button, the RAM card 3
The hood of a chapter or track recorded in 0 is read to provide random access to that chapter or track.

The RAM card 30 is a type of so-called IC (integrated circuit) card, and is a plastic card with RAM (anytime writing/writing).
It is embedded with a semiconductor chip (readable memory).
For example, it has a storage capacity of 2 to 4 bytes.

FIG. 2 shows an example of a recording format in a 4-bit RAM card 30. In this example, the first recording area A
The code (100) of the 100th track is written in I, and the code (100B2) of the 100th track is written in the second recording area A2 in binary coded decimal format.

FIG. 3 shows the system configuration of this embodiment. Reproduction optical system 4
0 includes a laser light source, an objective lens, a photodiode, a tracking mirror, etc., and a loaded optical disk 32
The pit surface is optically scanned to read out the signals (data) recorded there. In addition to the original video and audio signals, codes such as chapter numbers, track numbers, etc. are also recorded on the optical disc 32.

The focus servo system 42 controls the position of the objective lens so that the light beam is focused on the pit surface of the disk 32.

The tracking/slider servo system 44 controls the reflection angle of the tracking mirror so that the light beam spot always follows the track on the pit surface, and controls the drive of the slider motor when moving the light beam spot in a direction across the track. do.

The spindle servo system 46 controls the spindle motor 48 so that the rotational speed of the disk is locked to the reference signal FB.

The reproduced signal ES output from the optical system 40 is sent to the reproduced signal processing section 52. The reproduced signal processing section 52 reproduces the reproduced signal E.
S is subjected to demodulation processing, etc., and standard, for example, NTSC format video and audio signals VS are reproduced and sent to external equipment such as a television receiver, and codes such as chapter numbers and track numbers are reproduced and sent to the system control unit. Send to 54. Furthermore, the synchronization signal SY obtained by the reproduction signal processing section 52 is sent to the spindle servo system 46 for comparison with the reference signal FB.

The system control unit 54 consists of a microcomputer,
Keyboard part 5θ key manual and other parts (42, 44
, 48, etc.), it provides necessary control signals to each part of the system.

58 is a writer/writer for the RAM card used in this embodiment.
The reader interfaces the control unit 54 and the RAM card 30. 60 is a card detection sensor that detects that the RAM card 32 is inserted into the card insertion slot 18.

In the system of this embodiment configured as described above, the control unit 54 knows which chapter or track is currently being accessed. Therefore, each time the write button 20 is pressed while the RAM card 30 is installed, the control unit 54 decodes the key input and sends the number code of the currently accessed chapter or track to the writer/reader 58. The information is sequentially written into the RAM card 30 in the format shown in FIG. 2, for example.

Also, when the read button 22 is pressed with the RAM card 30 installed, the control unit 54 decodes the key input and reads the RAM card 30 through the writer/reader 58.
sequentially reads the chapter codes or track codes recorded on the . And when you crack the first code,
When random access is instructed from the keyboard section 56 for the chapter or track indicated by the code, that is, when the search button 14C, chapter selection button 14A, or track selection button 14B is pressed, the control section 54 then accesses the chapter or track number. The operation is the same as when input using the numeric buttons 16. In this way, a control signal for random access is sent from the control section 54 to each section such as the tracking slider system 44, and access to the chapter or trunk is performed. Thereafter, similar operations are performed for each code read from the RAM card 30.

In this way, according to this embodiment, while viewing the contents of the disk 32 after inserting the RAM card 30, if you wish to view the scene again later, simply press the write button 20 and the scene will be automatically saved. A scene (chapter or track) code is recorded (registered) in the RAM card 30. Then, at a later date, insert the RAM card 30 and press the read button 2.
When 2 is pressed, the scene of the code registered in the RAM card 30 is automatically randomly accessed and immediately made available for viewing. Therefore, not only can you manage disc information at home, but you can also use various methods such as registering it in a RAM card as described above to obtain the necessary information that you want to look up disc contents at school or library and search again later. How to use it is possible. It is also possible to rewrite the registered contents of the RAM card at any time.

Although the above-mentioned embodiment uses a RAM card, it is also possible to use an IC card with a microcomputer chip embedded together with a memory chip, a laser card with an optical storage medium attached, or even a magnetic card. It is.

Also, write button 20. The read button 22 and the recording format shown in FIG. 2 are only examples, and various key methods,
Recording formats are available.

Furthermore, the present invention is applicable to various play systems other than optical disc player systems.

(Effects of the Invention) As described above, according to the present invention, scenes and necessary information to be viewed again from among a huge amount of disc information can be registered in a conveniently portable memory card, and the memory card can be used as needed. By inserting the player, such registered scenes and information can be immediately and randomly accessed, thereby greatly improving the utility value and usability of this type of player 7 stem.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the entire surface panel of an optical disc player stem according to an embodiment of the present invention, FIG. 2 is a diagram showing an example of the recording format of the RAM card in the embodiment described above, and FIG. FIG. 1 is a block diagram showing a system configuration of an embodiment. 10...Body, 18...RAM card insertion slot, 20...Write button, 22...Read button, 30...RAM card, 40...Reproduction optical system , 44...Tracking/slider servo system, 54...System control section, 58...
Writer/reader, 60...Card detection sensor.

Claims (1)

[Scope of Claims] A player system equipped with a random access function that loads a recording medium in which data is recorded in each predetermined section and accesses any of the sections to read and reproduce the data, comprising: a key means for specifying a classification that requires a memory card; a memory card mounting means for removably mounting a memory card; and a classification code writing means for writing a code of the classification specified by the key means into the memory card. , a classification code reading means for reading the classification code from the memory card, and an access control means for decoding the classification code read by the classification code reading means and accessing the classification indicated by the code. A player system comprising: