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CSA ISO/IEC 29341-20-13:19 (R2024)

Current Reaffirmation

Information technology - UPnP Device Architecture - Part 20-13: Audio video device control protocol - Level 4 - Rendering control service (Adopted ISO/IEC 29341-20-13:2017, first edition, 2017-09)

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Information technology - UPnP Device Architecture - Part 20-13: Audio video device control protocol - Level 4 - Rendering control service (Adopted ISO/IEC 29341-20-13:2017, first edition, 2017-09)
CSA Preface Standards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the SCC Mirror Committee (SMC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and Telephone Consultative Committee (ITU-T). For brevity, this Standard will be referred to as “CSA ISO/IEC 29341-20-13” throughout. At the time of publication, ISO/IEC 29341-20-13:2017 is available from ISO and IEC in English only. CSA Group will publish the French version when it becomes available from ISO and IEC. The International Standard was reviewed by the CSA TCIT under the jurisdiction of the CSA Strategic Steering Committee on Information and Communications Technology and deemed acceptable for use in Canada. From time to time, ISO/IEC may publish addenda, corrigenda, etc. The TCIT will review these documents for approval and publication. For a listing, refer to the Current Standards Activities page at standardsactivities.csagroup.org. This Standard has been formally approved, without modification, by the Technical Committee and has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope This service template is compliant with the UPnP Device Architecture version 1.0 [14]. It defines a service type referred to herein as RenderingControl. 1.1 Introduction Most rendering devices contain a number of dynamically configurable attributes that affect how the current content is rendered. For example, video rendering devices, such as TVs, allow user control of display characteristics such as brightness and contrast, whereas audio rendering devices allow control of audio characteristics such as volume, balance, equalizer settings, etc. The RenderingControl service is intended to provide control points with the ability to query and/or adjust any rendering attribute that the device supports. The RenderingControl service enables a control point to: a) Discover the set of attributes supported by the device b) Retrieve the current setting of any supported attribute c) Change the setting of (that is: control) any modifiable attribute d) Perform a set of content transforms, which, in addition to the above, also enables functionality for selecting content depended options, for example: 1) Selecting a specific sub-stream in a composite stream for rendering. 2) Turning subtitling on or off. e) Restore the settings defined by a named Preset The RenderingControl service does not: a) Control the flow of the associated content (for example, Play, Stop, Pause, Seek, etc.). b) Provide a mechanism to enumerate locally stored content. c) Provide a mechanism to send content to another device (via the home network or direct connection). 1.2 Multi-input Devices Some high-end AV device are capable of receiving multiple pieces of content at the same time and combining that content together so that it can be rendered together using a single set of output hardware. For example, while displaying a TV program, high-end TVs can also display additional content (for example, VCR content) in a PIP (Picture-In-Picture) window. Similarly, a Karaoke machine can mix together the background music with a singer’s choice so that both sounds are played together on the same set of speakers. As with all devices, the RenderingControl service allows a control point to adjust the output characteristics of the post-mixed content before it is actually rendered. However, in many cases, control points may need to control the output characteristics of the individual input content before it is mixed together with the other input content. In order to support this, the RenderingControl service includes an InstanceID argument with each action that allows the control point to identify on which content the action is to be applied (for example, the post mixed content or one of the pre-mixed input content items). By convention, an InstanceID of 0 indicates that the invoked action shall be applied to the post-mixed content. Similarly, each pre-mixed input content is assigned a unique InstanceID whose value is a non-zero, positive integer. Refer to Annex A for additional information.

SDO CSA: Canadian Standards Association
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Publication Date May 30, 2024
Language en - English
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May 30, 2024 Reaffirmation