Speech synthesizer integrated circuit

Claim 2

An electronic apparatus for performing a synthesized sound generating function and a diverse processing function comprising; a single chip integrated circuit including, input control means for controlling input data developed externally of said single chip integrated circuit, calculation control means, operatively connected to said input control means for handling said input data and for performing said diverse processing function and said synthesized sound generating function, internal read only memory means for storing and providing to said calculation control means a synthesis control program for controlling said synthesized sound generating function, and random access memory means for storing and providing to said calculation control means data used by said calculation control means in performing said diverse processing function and said synthesized sound generation function; and external read only memory means, operatively connected to said calculation control means, for storing a diverse processing application program for controlling said diverse processing function of said calculation control means and sound data used by said calculation control means to synthesize desired sounds.

Claim 3

The electronic apparatus of claim 1 wherein said diverse processing function is an external device control function.

Claim 4

The electronic apparatus of claim 1 wherein said diverse processing function is an arithmetic calculation function.

Claim 5

The electronic apparatus of claim 2 wherein said external device control function is control of an information display.

Claim 6

The electronic apparatus of claim 2 wherein said external device control function is control of key input information from a keyboard.

Claim 7

The apparatus of claim 6 wherein the length of the words stored in said internal read only memory means is longer than the words stored in said external read only memory means; said single chip integrated circuit further comprising address means for addressing said internal read only memory means and said external read only memory means, at least some words of each said memory means being accessed using identical addresses.

Claim 8

The apparatus of claim 6 wherein said single chip integrated circuit further comprises address decoder means for distinguishing between words of said internal read only memory means and external read only memory means having identical addresses by their different lengths.

Claim 9

The apparatus of claim 6 wherein said synthesis control program requires a fast processing speed.

Claim 10

The apparatus of claim 6 wherein the words defining said synthesis control program stored in said internal read only memory means are formed of a plurality of bits, some of said plurality of bits defining an operation code while the reamining ones of said plurality of bits defining are operand code.

Claim 11

The apparatus of claim 6 wherein said single integrated circuit chip further comprises: D/A converter means including, a ladder resistor network for converting digital sound data provided by said calculation control means into a plurality of analog voltage levels, gate circuit means connected to said ladder resistor network for converting said analog voltage levels into a synthesized analog sound signal.

Claim 12

The apparatus of claim 10 wherein said single chip integrated circuit further comprises: main program counter means, responsive to control by said calculation control means, for addressing locations in said external and internal read only memory means containing said diverse processing application program and said synthesis control program, respectively, to provide said programs to said calculation control means; and data counter means, responsive to control by said calculation control means, for addressing locations in said external and internal read only memory means containing said sound data to provide said sound data to said calculation control means.

Claim 13

A single chip integrated circuit for performing a synthesized sound generating function and a diverse processing function and communicating with an external read only memory means comprising: input control means for controlling input data developed externally of said single chip integrated circuit; calculation control means, operatively connected to said input control means for handling said input data and for performing said diverse processing function and said synthesized sound generating function; internal read only memory means for storing and providing to said calculation control means a synthesis control program for controlling said synthesized sound generating function desired sounds; random access memory means for storing and providing to said calculation control means data used by said calculation control means in performing said diverse processing function and said synthesized sound generation function; and means, adapted to be coupled to the external read only memory means, for reading a diverse primary function application program stored in said external read only memory means and sound data stored in said external read only memory and used by said calculator control means to synthesize desired sounds.

Claim 14

A single chip integrated circuit for performing a synthesized sound generating function and a diverse processing function and communicating with an external read only memory means comprising: input control means for controlling input data developed externally of said single chip integrated circuit; calculation control means, operatively connected to said input control means for handling said input data and for performing said diverse processing function and said synthesized sound generating function; internal read only memory means for storing and providing to said calculation control means a synthesis control program for controlling said synthesized sound generating function desired sounds; random access memory means for storing and providing to said calculation control means data used by said calculation control means in performing said diverse processing function and said synthesized sound generation function; and means, adapted to be coupled to the external read only memory means, for reading a diverse primary function application program stored in said external read only memory means and sound data stored in said external read only memory and used by said calculator control means to synthesize desired sounds.

Claim 15

The circuit of claim 12 wherein said diverse processing function is an external device control function.

Claim 16

The circuit of claim 12 wherein said diverse processing function is an arithmetic calculation function.

Claim 17

The circuit of claim 13 wherein said external device control function is control of an information display.

Claim 18

The circuit of claim 13 wherein said external device control function is control of key input information from a keyboard.

Claim 19

The circuit of claim 12 wherein the length of the words stored in said internal read only memory means is longer than the words stored in the external read only memory means; said single chip integrated circuit further comprising address means for addressing said internal read only memory means and said external read only memory means, at least some words of each said memory means being accessed using identical addresses.

Claim 20

The apparatus of claim 17 wherein said single integrated circuit chip further comprises: D/A converter means including, a ladder resistor network for converting digital sound data provided by said calculation control meeans into a plurality of analog voltage levels, gate circuit means connected to said ladder resistor network for converting said analog voltage levels into a synthesized analog sound signal.

Claim 21

The apparatus of claim 18 wherein said single integrated circuit chip further comprises: main program counter means, responsive to control by said calculation control means; for addressing locations in said external and internal read only memory means containing said diverse processing application program and said synthesis control program, respectively, to provide said programs to said calculation control means; and data counter means, responsive to control by said calculation control means, for addressing locations in said external and internal read only memory means containing said sound data to provide said sound data to said calculation control means.