Communication device and data processing method
First Claim
1. A communication device comprising:
- a processor and a memory including instructions which, when executed by the processor, control;
monitoring reception intervals of packets received by a communication unit, and generating and outputting a target value as a parameter for a reproduction control process based on a variation in the packet reception intervals; and
performing reproduction control in accordance with the target value,wherein the reproduction control is to control an audio reproduction speed or image frame reproduction, in which the audio reproduction speed is controlled in accordance with the target value, in which the target value is generated by calculating a target stored data number as a target number of audio packets to be stored in a memory based on the variation in the reception intervals of audio packets received by the communication unit, and in which the audio reproduction speed is controlled in accordance with a determination whether a difference between the target stored data number and a memory-stored data number that is the number of audio packets actually stored in the memory changes successively in a same direction.
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Accused Products
Abstract
A packet reception state monitoring unit calculates a target stored data number as a target number of audio packets stored in a memory based on the variation in the reception intervals of audio packets, and a reproduction control unit controls the audio reproduction speed in accordance with the difference between the target stored data number and a memory-stored data number. When the memory-stored data number is smaller than the target stored data number, reproduction control is performed in a low-speed reproduction mode at a lower speed than a regular reproduction speed. When the memory-stored data number is larger than the target stored data number, reproduction control is performed in a high-speed reproduction mode at a higher speed than the regular reproduction speed. A reproduction speed changing process is performed, with hysteresis being given to transitions of the difference between the memory-stored data number and the target stored data number.
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Citations
13 Claims
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1. A communication device comprising:
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a processor and a memory including instructions which, when executed by the processor, control; monitoring reception intervals of packets received by a communication unit, and generating and outputting a target value as a parameter for a reproduction control process based on a variation in the packet reception intervals; and performing reproduction control in accordance with the target value, wherein the reproduction control is to control an audio reproduction speed or image frame reproduction, in which the audio reproduction speed is controlled in accordance with the target value, in which the target value is generated by calculating a target stored data number as a target number of audio packets to be stored in a memory based on the variation in the reception intervals of audio packets received by the communication unit, and in which the audio reproduction speed is controlled in accordance with a determination whether a difference between the target stored data number and a memory-stored data number that is the number of audio packets actually stored in the memory changes successively in a same direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A data processing method implemented in a communication device, the method comprising:
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monitoring reception intervals of packets received by a communication unit, and generating and outputting a target value as a parameter for a reproduction control process based on a variation in the packet reception intervals, the monitoring and the generating and outputting the target value being performed by a packet reception state monitoring unit; and performing reproduction control in accordance with the target value generated by the packet reception state monitoring unit, the reproduction control being performed by a reproduction control unit, wherein an audio reproduction speed or image frame reproduction is controlled in the reproduction control, in which the audio reproduction speed is controlled in accordance with the target value, in which the target value is generated by calculating a target stored data number as a target number of audio packets to be stored in a memory based on the variation in the reception intervals of audio packets received by the communication unit, and in which the audio reproduction speed is controlled in accordance with a determination whether a difference between the target stored data number and a memory-stored data number that is the number of audio packets actually stored in the memory changes successively in a same direction.
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Specification