Data processing system for development of outline fonts

A data processing system formed on a semiconductor chip, comprising:

• a microprocessor;
• a first bus to which said microprocessor is coupled;
• a memory to be coupled to said first bus;
• a digital signal processor, coupled to said first bus and including storage means for storing a data processing procedure and executing means coupled to said storage means for executing processing of data transmitted through said first bus in accordance with the procedure stored in said storage means, wherein the data is transferred by accessing the memory in accordance with a command provided from the microprocessor through the first bus;
• a second bus coupled to said digital signal processor, wherein data executed by the digital signal processor is transferred through the second bus;
• and
• a dual port memory having a first port coupled to said microprocessor through said first bus and a second port coupled to said digital signal processor through said second bus, wherein the dual port memory stores the executed data by the digital signal processor and wherein said microprocessor includes means for accessing said dual port memory through said first bus and said digital signal processor includes means for accessing said dual port memory through said second bus.

A data processing system formed on a semiconductor substrate comprising:

• a microprocessor;
• a digital signal processor including sequence control means for executing an operation instructed by said microprocessor, executing means, and control storage means for storing a data processing algorithm;
• first bus means for transmitting data from said microprocessor;
• and
• second bus means for transmitting data executed by said executing means.

A method for generating outline font data in a processing system including a microprocessor, a digital signal processor (DSP) having control storage means for storing a data processing algorithm and a multi-port memory wherein the DSP and the memory are coupled via a dedicated bus and the microprocessor is coupled to the DSP and the memory via an internal bus, comprising the steps of:

• (a) providing outline font development instructions including information to designate an outline font to be developed, from the microprocessor to the DSP through the internal bus;
• (b) fetching unprocessed outline font data transferred in accordance with the instruction provided to the DSP and performing calculations and coordinate transformations on the data therein to develop the unprocessed outline font data in accordance with the data processing algorithm;
• (c) storing the processed outline font data from the DSP into the multi-port memory through the dedicated bus;
• and,
• (d) transmitting the processed outline font data to a display device through said internal bus.

A processing system for generating outline font data for transmission to a display device comprising:

• a microprocessor;
• a digital signal processor (DSP) including storage means for storing an outline font data development program and executing means for executing an outline development operation of data in accordance with said outline font data development program;
• first bus means coupled to said microprocessor for transmitting data from said microprocessor;
• and,
• second bus means coupled to said digital signal processor for transmitting data executed by said executing means.