Portable universal video/audio computer tester

Claim 2

A portable, analog, video computer tester for testing a video computer interface, having a unitary housing and comprising: directy pluggable video connection means providing cable-free connection to an external source of a video signal; video detection means connected to the video connection means for detecting separate components of a RGB video signal input into the connection means; video indicating means connected to the video detection means for signaling presence of separate components of a RGB video signal detected by the video detection means; synch test circuit means connected to the video connection means for testing and indicating presence of separate components of a video synchronization signal input into the connection means; and, means for connecting to one ot an external power supply and an internal power supply, so that operation of a video computer interface can be verified by connection thereof to the video connection means.

Claim 3

A portable, analog, audio computer tester for testing an audio computer interface and peripheral audio devices, having a unitary housing and comprising: directly pluggable audio connection means providing cable-free connection to a source of an audio signal; internal audio generating means for creating an output audio signal; audio indicating means connected to the audio connection means for signaling presence of an audio signal input to the connection means from one of the external source and the internal generating means; means connected to the audio connection means and the audio generating means for changing an operational mode thereof from an input audio signal to an output audio signal; and, means for connecting to one of an external power supply and an internal power supply, so that operation of an audio computer interface can be verified by connection thereof to the audio connection means.

Claim 4

A portable, analog, audio computer tester for testing an audio computer interface and peripheral audio devices, having a unitary housing and comprising: directly pluggable audio connection means providing cable-free connection to a source of an audio signal; internal audio generating means for creating an output audio signal; audio indicating means connected to the audio connection means for signaling presence of an audio signal input to the connection means from one of the external source and the internal generating means; means connected to the audio connection means and the audio generating means for changing an operational mode thereof from an input audio signal to an output audio signal; and, means for connecting to one of an external power supply and an internal power supply, so that operation of an audio computer interface can be verified by connection thereof to the audio connection means.

Claim 5

A portable, analog, video and audio computer tester for testing video and audio computer interface and audio peripheral devices, having a unitary housing and comprising: directly pluggable video connection means providing cable-free connection to an external source of a video signal; video detection means connected to the video connection means for detecting separate components of a RGB video signal input into the connection means; video indicating means connected to the video detection means for signaling presence of separate components of a RGB video signal detected by the video detection means; synch test circuit means connected to the video connection means for testing and indicating presence of separate components of a video synchronization signal input into the connection means; and, directly pluggable audio connection means providing cable-free connection to a source of an audio signal; internal audio generating means for creating an output audio signal; audio indicating means connected to the audio connection means for signaling presence of an audio signal input to the connection means from one of the external source and the internal generating means; means connected to the audio connection means and the audio generating means for changing an operational mode thereof from an input audio signal to an output audio signal; and, means for connecting to one of an external power supply and an internal power supply, so that respective operations of video computer interfaces and audio computer interfaces can be verified by connection thereof to the video connection means and to the audio connection means, respectively.

Claim 6

A portable, analog, video and audio computer tester for testing video and audio computer interface and audio peripheral devices, having a unitary housing and comprising: directly pluggable video connection means providing cable-free connection to an external source of a video signal; video detection means connected to the video connection means for detecting separate components of a RGB video signal input into the connection means; video indicating means connected to the video detection means for signaling presence of separate components of a RGB video signal detected by the video detection means; synch test circuit means connected to the video connection means for testing and indicating presence of separate components of a video synchronization signal input into the connection means; and, directly pluggable audio connection means providing cable-free connection to a source of an audio signal; internal audio generating means for creating an output audio signal; audio indicating means connected to the audio connection means for signaling presence of an audio signal input to the connection means from one of the external source and the internal generating means; means connected to the audio connection means and the audio generating means for changing an operational mode thereof from an input audio signal to an output audio signal; and, means for connecting to one of an external power supply and an internal power supply, so that respective operations of video computer interfaces and audio computer interfaces can be verified by connection thereof to the video connection means and to the audio connection means, respectively.

Claim 7

A portable tester according to claim 1 wherein the synch test circuit means further comprises a horizontal and vertical selector of a synch-on-green composite synchronization signal and a horizontal and vertical selector of a composite synchronization signal and a synch indicating means for signaling presence of a horizontal and a vertical synchronization signal.

Claim 8

A portable tester according to claim 3 wherein the synch test circuit means further comprises a horizontal and vertical selector of a synch-on-green composite synchronization signal and a horizontal and vertical selector of a composite synchronization signal and a synch indicating means for signaling presence of a horizontal and a vertical synchronization signal.

Claim 9

A tester according to claim 1 wherein the video connection means includes standard IBM and Apple connectors connected to common video test circuitry.

Claim 10

A tester according to claim 3 wherein the video connection means includes standard IBM and Apple connectors connected to common video test circuitry.

Claim 11

A tester according to claim 2 wherein the audio connection means includes a standard audio plug and audio socket connected to common audio test circuitry.

Claim 12

A tester according to claim 3 wherein the audio connection means includes a standard audio plug and audio socket connected to common audio test circuitry.

Claim 13

A tester according to claim 6 wherein video circuitry is powered on through ground pins of the video connectors and a ground of the external device.

Claim 14

A tester according to claim 7 wherein video circuitry is powered on through ground pins of the video connectors and a ground of the external device.

Claim 15

A portable tester according to claim 1 wherein the video indicating means and the synch test circuit means for indicating presence of separate components of a video synchronization signal comprise respective LED.

Claim 16

A portable tester according to claim 3 wherein the video indicating means and the synch test circuit means for indicating presence of separate components of a video synchronization signal comprise respective LED.

Claim 17

A portable tester according to claim 2 wherein the audio indicating means comprises a LED.