Fir filter,method of operating the same, semiconductor integrated circuit including fir filter, and communication system for transmiting data filtered by fir filter

An FIR filter comprising:

• a first operational unit for operating present data among input data which consists of transmitting information and is composed of bit strings, and additional data which is added in order to transmit said present data;
• a second operational unit for operating previous data among said input data and said additional data corresponding to said previous data;
• and
• an adding unit for adding results of the first and second operations and outputting the resultant as a filter response.

An FIR filter comprising:

• a first operational unit for adding present data among input data which consists of transmitting information and is composed of bit strings;
• a second operational unit for operating previous data among said input data and a ratio of said additional data corresponding to said previous data to said additional data corresponding to said present data;
• an adding unit for adding an output from said first operational unit and an output from said second operational unit;
• and
• a multiplying unit for multiplying an output from said adding unit by said additional data corresponding to said present data and for outputting the resultant as a filter response.

A method of operating an FIR filter, comprising the steps of:

• receiving in sequence input data which consists of transmitting information and is composed of bit strings;
• operating said input data and additional data which is added in order to transmit said input data;
• operating previous data among said input data and a difference between said additional data corresponding to said previous data and said additional data corresponding to present data;
• and
• adding results of said operations and outputting the resultant as a filter response.

A method of operating an FIR filter, comprising the steps of:

• receiving in sequence input data which consists of transmitting information and is composed of bit strings;
• operating present data among said input data and additional data which is added in order to transmit said present data;
• operating previous data among said input data and said additional data corresponding to said previous data;
• and
• adding results of said operations and outputting the resultant as a filter response.

A method of operating an FIR filter, comprising the steps of:

• receiving in sequence input data which consists of transmitting information and is composed of bit strings and;
• adding present data among said input data;
• operating previous data among said input data and a ratio of said additional data corresponding to said previous data to said additional data corresponding to said present data;
• adding results of said operations;
• multiplying the addition result by said additional data corresponding to said present data;
• and
• outputting the multiplication result as a filter response.

A semiconductor integrated circuit including an FIR filter, wherein

• the FIR filter comprises:
• a first operational unit for operating input data which consists of transmitting information and is composed of bit strings, and additional data which is added in order to transmit said input data;
• a second operational unit for operating previous data among said input data and a difference between said additional data corresponding to the previous data and said additional data corresponding to present data among said input data;
• and
• an adding unit for adding results of the first and second operations and outputting the resultant as a filter response.

A semiconductor integrated circuit including an FIR filter, wherein

• the FIR filter comprises:
• a first operational unit for operating present data among input data which consists of transmitting information and is composed of bit strings, and additional data which is added in order to transmit said present data;
• a second operational unit for operating previous data among said input data and said additional data corresponding to said previous data;
• and
• an adding unit for adding results of the first and second operations and outputting the resultant as a filter response.

A semiconductor integrated circuit including an FIR filter, wherein

• the FIR filter comprises:
• a first operational unit for adding additional data corresponding to present data among input data which consists of transmitting information and is composed of bit strings;
• a second operational unit for operating previous data among said input data and a ratio of said additional data corresponding to said previous data to said additional data corresponding to said present data;
• an adding unit for adding an output from said first operational unit and an output from said second operational unit;
• and
• a multiplying unit for multiplying an output from said adding unit by said additional data corresponding to said present data and for outputting the resultant as a filter response.

A communication system for transmitting data filtered by an FIR filter, the communication system comprising:

• a first operational unit for operating input data which consists of transmitting information and is composed of bit strings, and additional data which is added in order to transmit said input data;
• a second operational unit for operating previous data among said input data and a difference between said additional data corresponding to the previous data and said additional data corresponding to present data among said input data;
• and
• an adding unit for adding results of the first and second operations and outputting the resultant as a filter response.

A communication system for transmitting data filtered by an FIR filter, the communication system comprising:

• a first operational unit for operating present data among input data which consists of transmitting information and is composed of bit strings, and additional data which is added in order to transmit said present data;
• a second operational unit for operating previous data among said input data and said additional data corresponding to said previous data;
• and
• an adding unit for adding results of said first and second operations and outputting the resultant as a filter response.

A communication system for transmitting data filtered by an FIR filter, the communication system comprising:

• a first operational unit for adding present data among input data which consists of transmitting information and is composed of bit strings;
• a second operational unit for operating previous data among said input data and a ratio of said additional data corresponding to said previous data to said additional data corresponding to said present data;
• an adding unit for adding an output from said first operational unit and an output from said second operational unit;
• and
• a multiplying unit for multiplying an output from said adding unit by said additional data corresponding to said present data and for outputting the resultant as a filter response.