Port expansion adapter for video game port
First Claim
1. An adapter circuit comprising a plurality of first ports and a second port, switching means connected to each of said first ports and to said second port, and control means connected to each of said first ports and to said switching means, said control means being responsive to a signal at any one of said first ports for causing said switching means to establish a connection between said one first port and said second port.
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Accused Products
Abstract
A game port expander for a video game input port includes a plurality of first multi-pin ports respectively connectable to four different game controllers, and a second multi-pin port connectable to the input port of a video game. Each game controller has a "fire control" switch which is connected to a selected pin of the corresponding first port for applying a signal to that port when the switch is actuated. That signal is converted by a decimal-to-binary converter to a binary representation of that first port which is applied to the inputs of a two-bit IC latch. The switch signal is also applied through an OR gate to an RC timing circuit which activates the latch after the signal is present for a predetermined time, to actuate an IC switching circuit which provides an interconnection between predetermined terminals of the second port and the corresponding terminals of the selected one first port.
344 Citations
19 Claims
- 1. An adapter circuit comprising a plurality of first ports and a second port, switching means connected to each of said first ports and to said second port, and control means connected to each of said first ports and to said switching means, said control means being responsive to a signal at any one of said first ports for causing said switching means to establish a connection between said one first port and said second port.
- 6. An adapter circuit comprising a plurality of first ports and a second port, switching means connected to each of said first ports and to said second port, and control means connected to each of said frst ports and to said switching means, said control means including encoding means responsive to a signal at any one of said first ports for producing a coded selection signal representative of said one first port and for applying said selection signal to said switching means, said switching means including decoding means responsive to said selection signal for establishing a connection between said one first port and said second port.
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12. A port expansion adapter for selectively connecting any one of a plurality of input devices to an input port wherein each of said input devices includes a switch, said adapter comprising:
- a plurality of first ports adapted to be respectively connected to the input devices, a second port adapted to be connected to the input port, means responsive to closure of the switch of one of the connected input devices for producing a control signal at the corresponding one of said first ports, switching means connected to each of said first ports and to said second port, and control means connected to each of said first ports and to said switching means, said control means being responsive to a control signal at one of said first ports for causing said switching means to establish a connection between said one first port and said second port, thereby to establish a connection between said input port and the input device connected to said one first port.
- View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
Specification