Highly efficient multiplexing system
First Claim
1. A highly efficient multiplexing system for multiplexing a speech signal, packet data and non-speech data, wherein the non-speech data is not packeted data having a higher priority than the packet data, comprising:
- first detection means for detecting one of a sound-existing period and a sound-silent period of the speech signal;
first insertion means for inserting the packet data into a speech time slot during the sound-silent period of the speech signal detected by said first detection means;
means for providing a data time slot for the non-speech data to enable the non-speech data to be multiplexed with the speech signal;
second detection means for detecting a data existence and a data non-existence of the non-speech data by detecting whether a fixed pattern continues in the non-speech data for a predetermined period; and
second insertion means for inserting the packet data into the data time slot of the non-speech data when the existence of the non-speech data is detected by said second detection means.
1 Assignment
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Accused Products
Abstract
The period of a sound-existence/sound-silence of a speech signal is detected. Packet data is inserted in a speech time slot during the period of non-existence of sound in the speech signal. A time slot is also given to the non-speech data requiring a quick response in transmission so that the non-speech data is multiplexed with the speech signal for transmission. Data-non-existence of non-speech data is detected when the non-speech data does not exist and then the packet data is inserted into a time slot of the non-speech data for transmission.
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Citations
27 Claims
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1. A highly efficient multiplexing system for multiplexing a speech signal, packet data and non-speech data, wherein the non-speech data is not packeted data having a higher priority than the packet data, comprising:
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first detection means for detecting one of a sound-existing period and a sound-silent period of the speech signal; first insertion means for inserting the packet data into a speech time slot during the sound-silent period of the speech signal detected by said first detection means; means for providing a data time slot for the non-speech data to enable the non-speech data to be multiplexed with the speech signal; second detection means for detecting a data existence and a data non-existence of the non-speech data by detecting whether a fixed pattern continues in the non-speech data for a predetermined period; and second insertion means for inserting the packet data into the data time slot of the non-speech data when the existence of the non-speech data is detected by said second detection means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A highly efficient multiplexing system for multiplexing at least packet data and non-speech data, wherein the non-speech data is not packeted data having a higher priority than the packet data, comprising:
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means for providing a data time slot for the non-speech data; detection means for detecting a non-speech data existence and a non-speech data non-existence by detecting whether a fixed pattern continues in the non-speech data for a predetermined period; and insertion means for inserting the packet data into the data time slot of the non-speech data when the non-speech data non-existence is detected by said detection means. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A transmission system, comprising:
multiplexing means for receiving a speech signal, packet data and non-speech data and for producing a multiplexed transmission signal including at least a speech time slot and a data time slot, wherein the non-speech data is not packeted data having a higher priority than the packet data, said multiplexing means includes at least; data detection means for receiving the non-speech data, for detecting one of a data-existing period and a data non-existing period by detecting whether a fixed pattern continues in the non-speech data for a predetermined period, and for outputting a data existing/non-existing signal; data selection means for receiving the data existing/non-existing signal and for selecting one of the packet data and the non-speech data as first selected data based on the data existing/non-existing signal; and data insertion means for inserting the first selected data into the data time slot of the multiplexed transmission signal. - View Dependent Claims (21, 22, 23, 24)
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25. A method for transmitting a multiplexed signal having at least a speech time slot and a data time slot, said method comprising the steps of:
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(a) receiving a speech signal, packet data and non-speech data, wherein the non-speech data is not packeted data having a higher priority than the packet data; (b) detecting one of a data-existing period and a data non-existing period by detecting whether a fixed pattern continues in the non-speech data for a predetermined period; (c) producing a data existing/non-existing signal based on said detecting in step (b); (d) selecting one of the packet data and the non-speech data as first selected data based on the data existing/non-existing signal; (e) inserting the first selected data into the data time slot of the multiplexed transmission signal; and (f) transmitting the multiplexed transmission signal. - View Dependent Claims (26)
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27. A transmission system, comprising:
demultiplexing means for receiving a multiplexed transmission signal including at least a speech signal, packet data, non-speech data, a data existing/non-existing signal and a speech existing/non-existing signal, wherein the non-speech data is not packeted data having a higher priority than the packet data, said demultiplexing means comprising; speech output means for outputting the speech signal when the speech existing/non-existing signal indicates a speech-existing period; packet data output means for outputting the packet data when one of the speech existing/non-existing signal indicates a speech-non-existing period and the data existing/non-existing signal indicates a data-non-existing period; fixed pattern generating means for generating a fixed pattern; and non-speech data output means for outputting the non-speech data when the data existing/non-existing signal indicates a data-existing period and for outputting the fixed pattern when the data existing/non-existing signal indicates the data-non-existing period.
Specification