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US 12,718,794 B2Granted
Method of signaling an audio stream properties descriptor, device for signaling an audio stream properties descriptor, and device for receiving an audio stream properties descriptor
AssigneeSharp Kabushiki Kaisha
InventorsKiran Mukesh Misra, Sachin G. Deshpande, Sheau Ng, Christopher Andrew Segall
Life of this patent
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Abstract
A device may be configured to parse a syntax element specifying the number of available languages within a presentation associated with an audio stream. A device may be configured to parse one or more syntax elements identifying each of the available languages and parse an accessibility syntax element for each language within the presentation.
Claims3
A method of receiving an audio stream properties descriptor, the method comprising:
- receiving the audio stream properties descriptor, wherein the audio stream properties descriptor includes:
- a language present syntax element indicating whether language information for a presentation is present,
- an accessibility role present syntax element indicating whether accessibility and role information for the presentation is present,
- a number of languages minus one syntax element in a case that a value of the language present syntax element is set to 1, wherein the number of languages minus one syntax element plus one specifies a number of languages that are available within the presentation,
- an accessibility syntax element for each of the number of languages in a case that a value of the accessibility role present syntax element is set to 1, wherein:
- the accessibility syntax element is an 8-bit unsigned integer field,
- Bit 0 of the accessibility syntax element indicates a presence of an audio accessibility service for visually impaired for a preselection is a most significant bit of an accessibility field,
- Bit 1 of the accessibility syntax element indicates that the presentation contains dialog enhancement, and
- Bit 2 of the accessibility syntax element indicates that the presentation conatins an audio representation of emergency information, and
- a role syntax element indicating a role for the presentation in the case that the value of the accessibility role present syntax element is set to 1.
7 more elements
A device for signaling an audio stream properties descriptor, the device comprising:
- one or more processors configured to:
- signal the audio stream properties descriptor, wherein the audio stream properties descriptor includes:
- a language present syntax element indicating whether language information for a presentation is present,
- an accessibility role present syntax element indicating whether accessibility and role information for the presentation is present,
- a number of languages minus one syntax element in a case that a value of the language present syntax element is set to 1, wherein the number of languages minus one syntax element plus one specifies a number of languages that are available within the presentation,
- an accessibility syntax element for each of the number of languages in a case that a value of the accessibility role present syntax element is set to 1, wherein:
- the accessibility syntax element is an 8-bit unsigned integer,
- Bit 0 of the accessibility syntax element indicates a presence of an audio accessibility service for visually impaired for a preselection is a most significant bit of an accessibility field,
- Bit 1 of the accessibility syntax element indicates that the presentation contains dialog enhancement, and
- Bit 2 of the accessibility syntax element indicates that the presentation contains an audio representation of emergency information, and
- a role syntax element indicating a role for the presentation, in the case that the value of the accessibility role present syntax element is set to 1.
8 more elements
A device for receiving an audio stream properties descriptor, the device comprising:
- one or more processors configured to:
- receive the audio stream properties descriptor, wherein the audio stream properties descriptor includes:
- a language present syntax element indicating whether language information for a presentation is present,
- an accessibility role present syntax element indicating whether accessibility and role information for the presentation is present,
- a number of languages minus one syntax element in a case that a value of the language present syntax element is set to 1, wherein the number of languages minus one syntax element plus one specifies a number of languages that are available within the presentation,
- an accessibility syntax element for each of the number of languages in a case that a value of the accessibility role present syntax element is set to 1, wherein:
- the accessibility syntax element is an 8-bit unsigned integer field,
- Bit 0 of the accessibility syntax element indicates a presence of an audio accessibility service for visually impaired for a preselection is a most significant bit of an accessibility field,
- Bit 1 of the accessibility syntax element indicates that the presentation contains dialog enhancement, and
- Bit 2 of the accessibility syntax element indicates that the presentation contains an audio representation of emergency information, and
- a role syntax element indicating a role for the presentation in the case that the value of the accessibility role present syntax element is set to 1.
8 more elements
Dependencies are inferred from the claim text.