W3C home > Mailing lists > Public > public-tvapi@w3.org > August 2015

RE: tvapi-ACTION-39: Look into parental control

From: Paul Higgs <paul.higgs@ericsson.com>
Date: Fri, 14 Aug 2015 16:37:11 +0000
To: TV Control API Community Group <public-tvapi@w3.org>
Message-ID: <9681F60D17697C41A146FC70CD4B48D6242A0556@eusaamb103.ericsson.se>
Hi all

Parental rating observation and control by an application is quite a complex beast, but based on our requirements and discussions I believe we need the following.

This is based on the OIPF Parental rating and parental control APIs<file:///C:\Users\ewcpahi\Documents\Open%20IPTV\HTML%20Specs\R2v2.3(html)\volume5.html#parental-rating-and-parental-control-apis> which are the only known APIs to be implemented in the industry.



1.       We need to set a parental control code that can used by "adults" to unlock programs/channels/recordings and also administer permitted levels.
OIPF does this through setParentalControlPIN()<http://www.oipf.tv/web-spec/volume5.html#setparentalcontrolpin>. Functionality to set/reset the parental control code should added to the TVManager<http://w3c.github.io/tvapi/spec/#tvmanager-interface> since it is likely to apply in many areas. A computer based UA may also use system or UA setting to set/reset the code.  While any “phrase” could be used as a parental control code, typically a numeric PIN of at least 4 digits is used as this is the simplest user-interaction with a TV based device.



2.       Parental control enforcement is activated “system wide” and in the OIPF this is through the setParentalControlStatus<http://www.oipf.tv/web-spec/volume5.html#setparentalcontrolstatus>() method. TVManager<http://w3c.github.io/tvapi/spec/#tvmanager-interface> should provide functions to enable/disable parental control enforcement in a similar manner (an application dialog can ask for a PIN and call setParentalControlStatus(pin, false).



3.       Given the API is required to be deployed in different regions, each of whom are likely to have different parental rating schemes (see https://en.wikipedia.org/wiki/Television_content_rating_systems for global program rating schemes and the diversity). OIPF allows the application to define (via the addParentalRatingScheme<http://www.oipf.tv/web-spec/volume5.html#parentalratingschemecollection-addparentalratingscheme>() method) the parental control items that are permitted when parental control is enabled.



·         HbbTV 2.0<http://www.hbbtv.org/pages/about_hbbtv/specification-2.php> profiles (in A.1) the ratings to  “A scheme supporting DVB-SI age based rating shall be supported.”



4.       The setBlockUnrated<http://www.oipf.tv/web-spec/volume5.html#setblockunrated>() method can be used to block presentation of programs which do not contain any parental rating information



5.       OIPF does not define a method to explicitly identify a given channel and block all of its contents (from the 2015-08-04 minutes “Sean: As far as I know, the parent configures channels with an access code to unlock them”). To achieve this we would need a setParentalControlChannelStatus(pin:string, enable:boolean) against the TVChannel<http://w3c.github.io/tvapi/spec/#idl-def-TVChannel>.
There is a read-only Boolean locked<http://www.oipf.tv/web-spec/volume5.html#channel-locked> for the channel which indicates if playback is currently disabled due to parental control enforcement being in effect.



6.       If an attempt is made to “tune” to a channel using via one of the approaches supported in the OIPF video/broadcast<http://www.oipf.tv/web-spec/volume5.html#video-broadcast> element and parental rating enforcement is active and the current program on that channel is outside the permitted rating, then the onChannelChangeError<http://www.oipf.tv/web-spec/volume5.html#video-broadcast-onchannelchangeerror>(channel, error) event handler is invoked with error=3 “parental lock on channel”. A PIN can be entered and



7.       While tuned to a channel, if the parental rating changes to a value outside the permitted range the onParentalRatingChange<http://www.oipf.tv/web-spec/volume5.html#video-broadcast-onparentalratingchange>() event handler is called, the block argument to this indicates whether parental control enforcement is in effect.



8.       If the parental rating information is not available or not decodable then the onParentalRatingError<http://www.oipf.tv/web-spec/volume5.html#video-broadcast-onparentalratingerror>() event handler is called. It is then up to the application to determine what action to take,





The OIPF specification also defines “blocked” and “locked” properties/attributes  on Recordings<http://www.oipf.tv/web-spec/volume5.html#recording-class>, Programme<http://www.oipf.tv/web-spec/volume5.html#programme-class> and CODAsset<http://www.oipf.tv/web-spec/volume5.html#codasset-class>



Paul



-----Original Message-----
From: TV Control API Community Group Issue Tracker [mailto:sysbot+tracker@w3.org]
Sent: Tuesday, August 04, 2015 9:50 AM
To: public-tvapi@w3.org
Subject: tvapi-ACTION-39: Look into parental control



tvapi-ACTION-39: Look into parental control



http://www.w3.org/community/tvapi/track/actions/39




Assigned to: Paul Higgs
















Received on Friday, 14 August 2015 16:37:48 UTC

This archive was generated by hypermail 2.4.0 : Friday, 17 January 2020 17:45:15 UTC