CN1227663C

CN1227663C - Play limit setting method for CD device

Info

Publication number: CN1227663C
Application number: CN 02155161
Authority: CN
Inventors: 李凖禾
Original assignee: Shanghai LG Electronics Co Ltd
Current assignee: Shanghai LG Electronics Co Ltd
Priority date: 2002-12-16
Filing date: 2002-12-16
Publication date: 2005-11-16
Anticipated expiration: 2022-12-16
Also published as: CN1508785A

Abstract

The present invention relates to a method for setting the playing limitation classes of optical disc devices. When a playing limitation management information table of country codes arranged on optical disc devices, such as DVD players or DVD recorders, etc. is not correspondingly recorded on optical discs, such as DVD, etc., the playing limitation classes of optical discs are set by taking other country codes recorded on optical discs as a reference. The normal function of the playing limitation executed by taking the playing limitation class information of similar country codes set in devices as standards.

Description

Other method to set up of broadcast limiter stage of optical disc apparatus

(1) technical field

The invention relates to other method to set up of broadcast limiter stage of optical disc apparatus, in more detail read and play the signal that is recorded in picture DVD CDs such as (DVD:Digital Versatile Disc, i.e. digital versatile disc) or be recorded in a kind of other method to set up of broadcast the limiter stage whether data on the CD are play about decision.

(2) background technology

Nearest exploitation has been born and can non-volatile recording have been stored high capacity high density compact disc---the DVD of high image quality animated image data and high tone quality voice data, and estimate extensively to popularize commonly usedization, the type of above-mentioned DVD has plays special-purpose DVD-ROM, make the DVD-R of one-time write only, make carbon copies formula DVD-RAM or DVD-RW (Rewrittable is erasable) etc. in addition.

Simultaneously, play the signal be recorded on the above-mentioned polytype DVD reading, or on the optical disc apparatus such as the DVD player of record data or DVD register, limit rank according to the broadcast with the vectoring information recorded and stored on any broadcast restriction rank that is provided with of user and the DVD CD, have the play operation that optionally limits data of optical disk, promptly possess the broadcast of permission restriction lock function.

Such as, the broadcast restriction rank that is set on the DVD player is meant that the broadcast of deciding to watch to the teenager of under-18s in 16 years old limits class information #3 (PTL_LVLI_#3), and when being kept at the broadcast restriction class information #8 (PTL_LVLI_#8) that broadcast restriction rank on the DVD record is meant that fixed adult more than 20 years old watches, the play content that above-mentioned DVD player can the adult of executive logging on DVD not be watched.

So possessed the user of above-mentioned DVD player, can in device, set the broadcast restriction rank that oneself needs arbitrarily, advance preventing teenager or age, little children watched harmful content.

For example, among the Chinese patent application CN1172397A " the selection record and the replay device of the video frequency program of video equipment ", a kind of optical disc apparatus is disclosed, can discern the record controls grade of video frequency program on video-tape or the CD, and with its with device one get the order unit fixed playback controlling grade of getting and compare, when both grade unanimities, just adopt original grade, when both grades are inconsistent, control final playback level by father and mother user.

But the broadcast whether determination data as described above is play restriction rank is to have different settings according to belonging country, so have following problem.When not being recorded in the CD such as DVD such as the broadcast limitation management information table (PTL_MAIT) corresponding with the country code that is arranged on optical disc apparatus such as DVD player, above-mentioned optical disc apparatus can not normally be carried out and play the restriction lock function.

(3) summary of the invention

So the present invention installs in order to solve the above problems, its purpose is, other method to set up of broadcast limiter stage of a kind of optical disc apparatus is provided, when not being recorded in the CDs such as DVD when the pairing broadcast limitation management information table of the country code that is arranged on optical disc apparatus such as DVD player or DVD register (Country Code), reference record other country code in CD, and the broadcast restriction rank of CD is set, play restriction lock (Parental Lock) function with this normal execution.

For reaching above-mentioned purpose, according to other method to set up of broadcast limiter stage of optical disc apparatus of the present invention, described optical disc apparatus comprises light picker; The RF signal processing part; The play signal handling part; Control the control part of described play signal handling part action; And a plurality of internal storages, as, RAM, EEPROM, flash memories, be characterized in that described other method to set up of broadcast limiter stage comprises following step: first step is, after CD inserts, confirm that by described control part the broadcast limiter stage in the vectoring information of the CD preserved don't bother about the country code of reason information in described RAM, whether broadcast restriction class information that is provided with arbitrarily with the user environment configuration information that comprises country code of preserving in the described EEPROM and user and various countries to don't bother about the country code of reason information consistent if playing broadcast limiter stage in the restriction rank information converting, if consistent, the broadcast restriction rank whether data of optical disk is play just be don't bother about the country code setting of reason information according to the broadcast limiter stage of the CD that is kept at described RAM; And, second step is, when the country code of the broadcast limitation management information of above-mentioned CD and the country code of broadcast limitation management information in being arranged on optical disc apparatus are mutually inconsistent, the broadcast restriction rank whether data of optical disk is play just is provided with by the countries concerned's broadcast restriction rank transformed value of described control part according to the prior setting that is kept at described EEPROM, CD is set to the broadcast restriction rank of the country code in the corresponding described optical disc apparatus, to adjust the broadcast restriction class information of respective country all ages and classes section.

Effect of the present invention:

As mentioned above, other method to set up of broadcast limiter stage according to optical disc apparatus of the present invention is, when the broadcast limitation management information table that is arranged on the country code on the optical disc apparatus such as DVD player or DVD register, when not having corresponding record on CDs such as DVD, then reference record other country code on CD is provided with the broadcast restriction rank of CD, and with the broadcast restriction class information that is arranged on country code similar in the optical disc apparatus is standard, carries out the normal restriction lock function of playing.

For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.

(4) description of drawings

Figure 1 shows that structural representation according to the optical disc apparatus of other method to set up of broadcast limiter stage of the present invention.

Fig. 2 is the action flow chart according to other method to set up of broadcast limiter stage of optical disc apparatus of the present invention.

Fig. 3 is a pie graph of playing limitation management information table (PTL_MAIT).

Fig. 4 is a pie graph of playing limitation management information search main points (PTL_MAI_SRP).

Fig. 5 is the broadcast restriction rank (Converted PTLRating) according to the conversion setting of the specific embodiment of the invention.

Fig. 6 is a pie graph of playing limitation management information (PTL_MAI).

(5) embodiment

Fig. 1 is the pie graph according to the optical disc apparatus of other method to set up of broadcast limiter stage of the present invention.Described optical disc apparatus comprises following parts: the light picker (P/U) 11 of the data of reading and recording on CDs such as DVD 10; Is the RF signal Processing of above-mentioned light picker 11 outputs the RF signal processing part 12 of amplification and binary bit signal; The binary bit signal Processing that above-mentioned RF signal processing part 12 is handled is the play signal handling part 13 of digital image or voice data; Control above-mentioned play signal handling part 13 and make the control part 14 of signal Processing action; And a plurality of internal storages of preserving required data of above-mentioned control action and information, such as random access memory (hereinafter to be referred as RAM) 15 and flash memories (Flash Memory) 16, and electricallyerasable ROM (EEROM) (hereinafter to be referred as EEPROM) 17.

Described RAM15 has preserved the vectoring information that is recorded in the CD, and described EEPROM17 has preserved user environment configuration information and any broadcast restriction class information that is provided with of user that comprises country code, and various countries play restriction rank information converting.

When CDs such as DVD 10 insert in the optical disc apparatus, control part 14 reading and recording specific vectoring information in the guidance field, and temporarily be stored among the RAM15, search is included in the broadcast limitation management information table (PTL_MAIT) in the guidance information then, if this moment is not when searching and preserving the corresponding broadcast limitation management of the country code that is arranged on above-mentioned EEPROM17 information table (PTL_MAIT), reference record other country code on CD, and the broadcast restriction rank of CD is set, will be described in detail this below.

S10, when CDs such as DVD 10 insert in the optical disc apparatus, the vectoring information of control part 14 reading and recording in the guidance field, and be stored on the RAM15.

S11, follow the country code (Country Code) that control part 14 is searched in the broadcast limitation management information that is kept in the RAM15 guidance information, (described country code such as Fig. 3 and shown in Figure 4), and be recorded in the broadcast limitation management information search pointer (PTL-MAI-SRP) in the broadcast limitation management information table (PTL_MAIT) in the Image Management information (VMGI) with the size of 2 bytes.

Simultaneously, be recorded in the country code of playing in the limitation management information search pointer (PTL-MAI-SRP), comprised and specified it to play the information of the countries concerned of limitation management information.As mentioned above, the broadcast restriction rank that determines data of optical disk whether to play is to carry out different settings according to various countries' code.

S12, S14, so whether and be recorded in that to play the interior country code of limitation management information search pointer (PTL-MAI-SRP) consistent control part 14 will be relatively and is differentiated and be kept in the optical disc apparatus EEPROM17 and go up set country code, if when above-mentioned comparative result was consistent, CD was play in the request that judges whether again.

S13, S14, when if comparative result is inconsistent among the above-mentioned S12, promptly be recorded in and play the country code that is comprised in the limitation management information search pointer (PTL-MAI-SRP) and be kept at country code set in the EEPROM17 when inconsistent, play the restriction rank according to the various countries that are kept on the EEPROM17, determine the information converting setting.

As shown in Figure 5, the broadcast restriction rank information setting that with the American National code is the CD of benchmark is, specifying the broadcast restriction class information (PTL-LVLI) that the people of age bracket watches more than 20 years old is #8, #7, specifying the broadcast restriction class information that can watch to the people of age bracket below 20 years old in 18 years old is #6, #5, and the broadcast restriction class information that can watch to the people of under-18s age bracket in 16 years old is #4, #3; And be that the broadcast restriction rank information setting of the disk player of benchmark is with Korea S's country code: specifying the broadcast restriction class information (PTL-LVLI) that the people of age bracket watches more than 20 years old is #8, #7, #6, specifying the broadcast restriction class information that can watch to the people of age bracket below 20 years old in 18 years old is #5, #4, and the broadcast restriction class information that can watch to the people of under-18s age bracket in 16 years old is #4, #3.When being provided with above-mentioned restriction class information, control part 14 will be play restriction rank information converting according to the various countries that are kept on the EEPROM17, adjust the broadcast restriction class information of various countries' all ages and classes section.

So, the broadcast restriction class information of above-mentioned CD after information converting is provided with is, specifying the broadcast restriction class information (PTL-LVLI) that the people of age bracket watches more than 20 years old is #8, #7, #6, specifying the broadcast restriction class information that can watch to the people of age bracket below 20 years old in 18 years old is #5, #4, and to specify the broadcast that can watch to the people of under-18s age bracket in 16 years old to limit class information be #3.

S15, S16, afterwards when the user asks to play CD in S14, control part 14 confirms whether to be provided with in advance broadcast restriction lock (Parental Lock) pattern, and its result confirms the broadcast restriction rank of the Video Compact Disc (VTS) that request is play if be set to play when limiting latching mode.

S17 that is to say, as shown in Figure 6, the broadcast restriction rank (PTL-ID-FLD) according to the Image Management information of 2 byte-sized in the broadcast restriction class information of confirming relevant request playing video CD (VTS) decides the permission of Video Compact Disc to play rank.

S18, the broadcast restriction of the Video Compact Disc that above-mentioned broadcast restriction rank is confirmed, according to the country code being the broadcast restriction rank that benchmark is provided with, do not play this CD than the broadcast restriction rank of in device, setting in high, simultaneously than being arranged on broadcast restriction rank in device execution playback action low the time.

Certainly, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.

Claims

1. other method to set up of broadcast limiter stage of an optical disc apparatus, described optical disc apparatus comprises light picker; The RF signal processing part; The play signal handling part; Control the control part of described play signal handling part action; And a plurality of internal storages, as, RAM, EEPROM, flash memories is characterized in that described other method to set up of broadcast limiter stage comprises following step:

First step is, after CD inserts, confirm that by described control part the broadcast limiter stage in the vectoring information of the CD preserved don't bother about the country code of reason information in described RAM, whether broadcast restriction class information that is provided with arbitrarily with the user environment configuration information that comprises country code of preserving in the described EEPROM and user and various countries to don't bother about the country code of reason information consistent if playing broadcast limiter stage in the restriction rank information converting, if consistent, the broadcast restriction rank whether data of optical disk is play just be don't bother about the country code setting of reason information according to the broadcast limiter stage of the CD that is kept at described RAM; And

Second step is, when the country code of the broadcast limitation management information of above-mentioned CD and the country code of broadcast limitation management information in being arranged on optical disc apparatus are mutually inconsistent, the broadcast restriction rank whether data of optical disk is play just is provided with by the countries concerned's broadcast restriction rank transformed value of described control part according to the prior setting that is kept at described EEPROM, CD is set to the broadcast restriction rank of the country code in the corresponding described optical disc apparatus, to adjust the broadcast restriction class information of respective country all ages and classes section.

2. other method to set up of broadcast limiter stage of a kind of optical disc apparatus as claimed in claim 1 is characterized in that:

Described the countries concerned broadcast restriction rank transformed value is set as benchmark by the broadcast restriction rank information setting of the CD of the countries concerned.

3. other method to set up of broadcast limiter stage of a kind of optical disc apparatus as claimed in claim 1 is characterized in that also comprising third step:

When the user asks to play CD, confirm whether to be provided with in advance broadcast restriction latching mode by described control part, do not play the restriction latching mode if be provided with, just play CD, play the restriction latching mode if be provided with in advance, confirm the broadcast restriction rank of the CD that request is play,, optionally play with the Video Compact Disc that request is play according to the broadcast restriction rank of described setting and the broadcast restriction class information of described CD.