Digital data multiplexing apparatus
AssigneeNEC Electronics Corporation
InventorTatsuya Hara
Life of this patent
Estimating the term…
Abstract
There are provided: input buffers B1 to Bn of a plurality of channels; occupied amount calculation devices O1 to On for calculating occupied amounts of the input buffers; an occupied amount of buffer comparison device 9 for comparing a threshold value set for respective buffers B1 to Bn in advance and actual occupied amount calculated by the calculation devices O1 to On; and a data selection device 6 for selecting a buffer with a largest occupied amount out of buffers of which occupied amounts have exceeded a threshold value based on results of comparison of occupied amounts 10-1 to 10-m of the comparison device 9 and outputting the data.
Claims10
A digital data multiplexing apparatus for multiplexing a plurality of kinds of digital data, comprising:
- a plurality of temporary memory means for temporarily storing said digital data individually;
- a plurality of occupied amount of data calculation means for calculating occupied amounts of digital data of said plurality of temporary memory means, respectively;
- occupied amount comparison means for comparing a result of calculation of said plurality of occupied amount of data calculation means and a threshold value of an occupied amount set for respective temporary memory means in advance;
- and
- data selection means for selecting an output from said plurality of temporary memory means and multiplexing it by a unit of packet according to a result of comparison of said occupied amount comparison means.
A digital data multiplexing apparatus for multiplexing a plurality of kinds of digital data, comprising:
- a plurality of temporary memory means for temporarily storing said digital data individually;
- a plurality of occupied amount of data calculation means for calculating occupied amounts of digital data of said plurality of temporary memory means, respectively;
- a priority control device that is connected to at least one of said plurality of occupied amount of data calculation means and changes a priority of a pertinent temporary memory means among said plurality of temporary memory means;
- occupied amount comparison means for comparing an output from said priority control device and outputs from at least one of occupied amount of data calculation means not connected to said priority control device and a threshold value of an occupied amount set for respective temporary memory means in advance;
- and
- data selection means for selecting an output from said plurality of temporary memory means according to a result of comparison of said occupied amount comparison means to multiplex the output by a unit of packet.
A digital data multiplexing apparatus for multiplexing a plurality of kinds of digital data, comprising:
- a plurality of temporary memory means for temporarily storing said digital data individually;
- a plurality of occupied amount of data calculation means for calculating occupied amounts of digital data of said plurality of temporary memory means, respectively;
- a priority control device that is connected to at least one of said plurality of occupied amount of data calculation means and changes a priority of a pertinent temporary memory means among said plurality of temporary memory means;
- a priority selection switch that is connected to at least one of said plurality of occupied amount of data calculation means and said priority control device and switches an occupied amount of digital data of said temporary memory means outputted from said connected occupied amount of data calculation means and an occupied amount of digital data outputted from said priority control device;
- occupied amount comparison means for comparing an output from said priority control device and outputs from at least one of occupied amount of data calculation means not connected to said priority control device and a threshold value of an occupied amount set for respective temporary memory means in advance;
- and
- data selection means for selecting an output from said plurality of temporary memory means according to a result of comparison of said occupied amount comparison means to multiplex the output by a unit of packet.
A digital data multiplexing apparatus for multiplexing a plurality of kinds of digital data, comprising:
- a plurality of timing control devices for controlling timing for inputting and outputting said digital data individually;
- one temporary memory means for inputting and temporarily storing outputs from said plurality of timing control devices;
- occupied amount of data calculation means for calculating an occupied amount of digital data of said one temporary memory means for respective timing and generating a multiplex control signal corresponding to said plurality of kinds of digital data;
- occupied amount comparison means that is connected to said occupied amount of data calculation means and compares said multiplex control signal and a threshold value of an occupied amount of data set for respective said timing control devices in advance;
- and
- data selection means for selecting an output from said one temporary memory means according to said multiplex control signal outputted from said occupied amount of data calculation means and a result of comparison of said occupied amount comparison means and multiplexing the output by a unit of packet.
Dependencies are inferred from the claim text.