Repeater system configurations - Revision history

G8GTZ: /* IR Transmitter Control Circuits */

2022-02-25T08:53:52Z

IR Transmitter Control Circuits

G8GKQ: /* HDMI repeater with Quad view */

2022-02-22T16:13:19Z

HDMI repeater with Quad view

G8GKQ: /* HDMI repeater with Quad view */

2022-02-22T11:53:47Z

HDMI repeater with Quad view

G8GKQ: /* HDMI repeater with Quad view */

2022-02-22T11:51:45Z

HDMI repeater with Quad view

G8GKQ: /* Basic HDMI repeater */

2022-02-22T10:50:40Z

Basic HDMI repeater

G8GTZ: /* Analogue video switchers */

2022-02-22T09:39:35Z

Analogue video switchers

G8GTZ: /* Basic HDMI repeater with buffer */

2022-02-22T09:33:46Z

Basic HDMI repeater with buffer

G8GTZ: /* Basic HDMI repeater with buffer */

2022-02-22T09:32:59Z

Basic HDMI repeater with buffer

G8GTZ: /* Basid HDMI repeater with buffer */

2022-02-22T09:32:30Z

Basid HDMI repeater with buffer

G8GTZ: /* Basic HDMI repeater */

2022-02-22T09:32:17Z

Basic HDMI repeater

← Older revision		Revision as of 08:53, 25 February 2022
Line 30:		Line 30:

	An example fragment of the configuration file for this, more complex, configuration is illustrated here: [[Repeater system full quad view IR configuration]].		An example fragment of the configuration file for this, more complex, configuration is illustrated here: [[Repeater system full quad view IR configuration]].
−
−	~~==IR Transmitter Control Circuits==~~
−
−	~~Here are example IR transmitter control circuits for the single and dual switch cases:~~
−
−	~~[[File:IR Control Circuit.JPG\|718px]]~~

	==Audio switching==		==Audio switching==

← Older revision		Revision as of 16:13, 22 February 2022
Line 30:		Line 30:

	An example fragment of the configuration file for this, more complex, configuration is illustrated here: [[Repeater system full quad view IR configuration]].		An example fragment of the configuration file for this, more complex, configuration is illustrated here: [[Repeater system full quad view IR configuration]].
		+
		+	==IR Transmitter Control Circuits==
		+
		+	Here are example IR transmitter control circuits for the single and dual switch cases:
		+
		+	[[File:IR Control Circuit.JPG\|718px]]

	==Audio switching==		==Audio switching==

@@ Line 23: / Line 23: @@
 [[File:HDMIquad (Medium).JPG|600px]]
-In the Basic HDMI repeater design above, the controller HDMI output is connected to the main switch (#2), limiting the number of inputs available for recievers etc.  One input on the quad view facility would also be used by the controller.
+In the Basic HDMI repeater design above, the controller HDMI output is connected to the main switch, limiting the number of inputs available for recievers etc to 3.  One input on the quad view facility would always show the controller.
-To increase the number of inputs, a 3rd HDMI seamless switch is connected to an input of the 2nd HDMI switch.  The repeater controller IR commands for any of those inputs and the quad view are set to also include the command to set the 2nd switch to the correct input.
+To increase the number of inputs, a 3rd HDMI seamless switch is connected to input 2 of the 2nd HDMI switch.  The repeater controller IR commands for any of those inputs and the quad view are set to also include the command to set the 2nd switch to the correct input.
 Additional inputs can still be connected to the spare inputs on switch #2 but will not be seen in the quad view.

@@ Line 23: / Line 23: @@
 [[File:HDMIquad (Medium).JPG|600px]]
-In the above design, the controller HDMI output is connected to the main switch (#2), limiting the number of inputs available for recievers etc.  One input on the quad view facility would also be used by the controller.
+In the Basic HDMI repeater design above, the controller HDMI output is connected to the main switch (#2), limiting the number of inputs available for recievers etc.  One input on the quad view facility would also be used by the controller.
 To increase the number of inputs, a 3rd HDMI seamless switch is connected to an input of the 2nd HDMI switch.  The repeater controller IR commands for any of those inputs and the quad view are set to also include the command to set the 2nd switch to the correct input.
 Additional inputs can still be connected to the spare inputs on switch #2 but will not be seen in the quad view.
 ==Audio switching==

@@ Line 9: / Line 9: @@
 [[File:Basic HDMI repeater.JPG|600px]]
-This example uses a standard seamless HDMI switcher controlled by Infra Red with 4 inputs, one of which is the HDMI output of the controller RPi.
+This example uses a standard seamless HDMI switcher controlled by Infra Red with 4 inputs, one of which is the HDMI output of the controller RPi.  An example fragment of the config file for this configuration is shown here  [[Repeater system basic IR configuration]].
 ==Basic HDMI repeater with buffer==

@@ Line 55: / Line 55: @@
 The controller is designed primarily for use with an HDMI video switcher.
-However, the controller does also out the video switch command as GPIO hardware switch lines.  These can be used to drive an analogue video switcher.
+However, the controller does also output the video switch command as GPIO hardware switch lines.  These can be used to drive an analogue video switcher.
-Currently, the controller graphics output is HDMI only.  The ability to output composite video may be included in a future release.
+A future release will be able to control video switchers via i2c.
-However, HDMI to composite converters are easily available and can be used to generate PAL or NTSC graphics.
+Currently, the controller graphics output is HDMI only.  The ability to output composite video may be included in a future release.  However, HDMI to composite converters are easily available and can be used to generate PAL or NTSC graphics.

@@ Line 15: / Line 15: @@
 Experience has shown that although the switches are advertised as seamless, the switch between sources is not truly seamless.
-This glitch is enough to cause any encoder following the switch to hang up.  This problem is solved by using another HDMI seamless switch (#1) as a buffer between our main switch (#2) and the encoder.
+This glitch is enough to cause any encoder following the switch to hang up.  This problem is solved by using another HDMI seamless switch (#1) as a buffer between the main switch (#2) and the encoder.  This may seem extravagant but is cheaper than a designed HDMI buffer!
 [[File:Basic HDMI with buffer.JPG|600px]]

@@ Line 11: / Line 11: @@
 This example uses a standard seamless HDMI switcher controlled by Infra Red with 4 inputs, one of which is the HDMI output of the controller RPi.
-==Basid HDMI repeater with buffer==
+==Basic HDMI repeater with buffer==
 Experience has shown that although the switch is advertised as seamless, the switch between sources is not truly seamless.  This glitch is enough to cause any encoder following the switch to hang up.  This problem is solved by using another HDMI seamless switch (#1) as a buffer between our main switch (#2) and the encoder.

← Older revision		Revision as of 09:32, 22 February 2022
Line 10:		Line 10:

	This example uses a standard seamless HDMI switcher controlled by Infra Red with 4 inputs, one of which is the HDMI output of the controller RPi.		This example uses a standard seamless HDMI switcher controlled by Infra Red with 4 inputs, one of which is the HDMI output of the controller RPi.
		+
		+	==Basid HDMI repeater with buffer==

	Experience has shown that although the switch is advertised as seamless, the switch between sources is not truly seamless. This glitch is enough to cause any encoder following the switch to hang up. This problem is solved by using another HDMI seamless switch (#1) as a buffer between our main switch (#2) and the encoder.		Experience has shown that although the switch is advertised as seamless, the switch between sources is not truly seamless. This glitch is enough to cause any encoder following the switch to hang up. This problem is solved by using another HDMI seamless switch (#1) as a buffer between our main switch (#2) and the encoder.