Volume level-based closed-captioning control

Patent metadata

Field	Value
Publication number	US-9210360-B2
Application number	US-201213730145-A
Country	US
Kind code	B2
Filing date	Dec 28, 2012
Priority date	Dec 28, 2012
Publication date	Dec 8, 2015
Grant date	Dec 8, 2015

Abstract

Methods and apparatus are provided for a control of closed captioning based on an audio volume level. A content receiver detects that a volume of an audio of a video presentation has been adjusted by a user, and determines the adjusted audio volume level that results from the adjustment. The content receiver compares the resulting adjusted audio volume level to a threshold level. When the content determines that the adjusted audio volume level is under the threshold level, it enables closed captioning of the video presentation, thus presenting the user with both audio and closed captioning. When the content receiver determines that the adjusted audio volume level is above the threshold level, it disables closed captioning for the video presentation. The content receiver may use a microphone to determine the adjusted audio volume level.

First claim

The invention claimed is:

1. A method comprising:
sending from a content receiver, a video signal to a display device, the video signal carrying a video data for a video presentation on the display device;
sending from the content receiver, an audio signal to an audio device, the audio signal carrying an audio data for output as an audio at a first volume level value, the audio data being associated with the video data;
detecting, by the content receiver, a volume adjustment that alters the audio output by the audio device;
determining, at the content receiver, a second volume level value based at least on the detected volume adjustment; and
in response to the volume adjustment, modifying, under control of the content receiver, a state of closed-captioning in the video presentation based on the determined second volume level value.

2. The method as claimed in claim 1 , wherein determining the second volume level value comprises:
determining a last known volume level value;
receiving from the audio device, an audio control message associated with the volume adjustment; and
determining the second volume level value based at least on the last known volume level value and the audio control message.

3. The method as claimed in claim 1 wherein the modifying, under control of the content receiver, the state of closed-captioning in the video presentation comprises:
providing text on the video presentation when the second volume level value is below a selected threshold value, the text being at least a transcription of the audio associated with the video presentation.

4. The method as claimed in claim 1 further comprising:
receiving, at the content receiver, an input from a user selecting the selected threshold value; and
storing the selected threshold value in the memory module.

5. The method as claimed in claim 1 wherein the audio device is integrated with the display device.

6. The method as claimed in claim 1 further comprising:
storing the second volume level value as a last known volume level value in a memory module.

7. A method comprising:
sending from a content receiver, a video signal to a display device, the video signal carrying video data for a video presentation on the display device;
sending from the content receiver, an audio signal to an audio device, the audio signal carrying an audio data for output as an audio at a first volume level, the audio data being associated with the video data;
detecting, by the content receiver, a volume adjustment that has occurred associated with the audio output by the audio device;
determining, at the content receiver, a second volume level value based at least on the detected volume adjustment, by
receiving, at a transducer, an acoustic air pressure resulting from the volume adjustment, the acoustic air pressure being associated with a the audio output by the audio device;
converting the acoustic air pressure to an electrical signal; and
outputting the electrical signal as the second volume level value; and

modifying, under control of the content receiver, a state of closed-captioning in the video presentation based on the determined second volume level value.

8. A method comprising:
sending from a content receiver, a video signal to a display device, the video signal carrying video data for a video presentation on the display device;
sending from the content receiver, an audio signal to an audio device, the audio signal carrying audio data for output as an audio at a first volume level, the audio data being associated with the video data;
detecting, by the content receiver, a volume adjustment that has occurred associated with the audio output by the audio device;
determining, at the content receiver, a second volume level value based at least on the detected volume adjustment; by
determining a last known volume level value;
receiving, at the content receiver, a transmission of the volume adjustment from a remote control; and
determining the second volume level value based at least on the last known volume level value and the received transmission of the volume adjustment and

modifying, under control of the content receiver, a state of closed-captioning in the video presentation based on the determined second volume level value.

9. A method comprising:
sending from a content receiver, a video signal to a display device, the video signal carrying video data for a video presentation on the display device;
sending from the content receiver, an audio signal to an audio device, the audio signal carrying audio data for output as an audio at a first volume level, the audio data being associated with the video data;
detecting, by the content receiver, a volume adjustment that has occurred associated with the audio output by the audio device;
determining, at the content receiver, a second volume level value based at least on the detected volume adjustment; and
modifying, tinder control of the content receiver, a state of closed-captioning in the video presentation based on the determined second volume level value, by
retrieving from a memory module, a selected threshold value;
enabling closed-captioning of the video presentation if the second volume level value is less than the selected threshold value; and
disabling the closed-captioning of the video presentation if the second volume level value is more than the selected threshold value.

10. A content receiver comprising:
a tuning module configured to receive an encrypted signal;
a decoding module coupled to the tuning module, the decoding module configured to decode a programming content and caption data from the encrypted signal, the programming content including video data and audio data associated with the video data, the caption data being associated with the video data and the audio data;
a receiving module configured to receive a transmission from a remote control;
a video processing module configured to process the video data for display as a video presentation;
an audio processing module configured to process the audio data for output as an audio;
an interface module configured to send the audio data to an audio device for output at a first volume level and to send the video data to a display device for display as a video presentation;
a controlling module coupled to the receiving module, the video processing module, and the audio processing module, the controlling module including
a comparing module configured to compare a second volume level value to a selected threshold value, and
a control generating module configured to control closed-captioning of the video presentation; and

a volume detection module coupled to the controlling module, the volume detection module configured to determine the second volume level value in response to a volume level adjustment to the first volume level.

11. The content receiver as claimed in claim 10 wherein the video processing module comprises:
a receiving module configured to receive the caption data and the video data;
a synchronization module configured to synchronize the caption data to the video data; and
an overlay module configured to encode, in a synchronized manner, the caption data onto the video data, the caption data for display as a text on the video presentation.

12. The content receiver as claimed in claim 10 wherein the volume detection module comprises:
a transducer configured to
detect an acoustic air pressure associated with the volume level adjustment, and
convert the acoustic air pressure into an electrical signal; and

a processing module coupled to the transducer, the processing module configured to output the electrical signal as the s

Assignees

• Eldon Technology Ltd
• Echostar Uk Holdings Ltd

Inventors

• Mountain Dale Llewelyn

Classifications

• H04N5/60

  for the sound signals · CPC title

• H04N21/42203

  sound input device, e.g. microphone · CPC title

• H04N21/4394

  involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams (arrangements characterised by components specially adapted for monitoring, identification or recognition of audio in broadcast systems H04H60/58) · CPC title

• H04N5/44582 Primary

  Electricity · mapped topic

• H04N21/4884 Primary

  for displaying subtitles · CPC title