CN105630729B - Switching device for switching information signals of master device and slave device to output device - Google Patents
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- G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
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Abstract
The invention relates to a method for switching information signals (32, 42) of a master device (14) and a slave device (20) to an output device (26), wherein the switching device (10, 10' ' ') is designed to separate a master signal (16) received from the master device (14) by means of a first receiving unit (30) into a first information signal (32), a request signal (34) and a control signal (36), to supply a slave signal (22) received from the slave device (20) by means of a second receiving unit (40) as a second information signal (42) or to separate the second information signal (42) and a response signal (44), to supply the first information signal (32) of the first receiving unit (30) and the second information signal (42) of the second receiving unit (40) as output signals to the output device (26) depending on the control signal (36) of the first receiving unit (30), the request signal (34) of the first receiving unit (30) is supplied to the output device (26) and the slave device (20), and a response signal (44') of the output device (26) or of the slave device (20) received on the basis of the request signal (34) is supplied to the master device (14) by means of the first receiving device (30).
Description
Technical Field
The invention relates to a switching device for switching information signals of a master device and a slave device to an output device. Further the invention relates to a method for switching information signals of a master device and a slave device to an output device.
Background
As is known from the prior art, a display device can not only receive video signals, but can also be controlled or supplied with data (e.g., touch information) by a controller via a bidirectional communication link. It is also known that such a connection can be utilized by one or more other controllers via a switch. To reduce the number of connections necessary between the controller and the display device, the video signal and the bi-directional communication connection may be multiplexed into one signal (smart display link = IDL). In principle, this connection can also be switched via a Switch (Switch). Additional switching signals are necessary if the switching should not be carried out directly on the switch, but rather controlled by the controller and complex logic (for example a microcontroller) in the switch should be avoided.
In many systems there is a central controller (master) which controls the processes in the system. However, if the central controller is separated from the display by an adapter, the central controller can no longer perform the control function in this direct manner. In addition, timing critical information (e.g., touch information) from the display must not cause delays in indirect or processing during this period.
Disclosure of Invention
The object of the present invention is a switching device and a method for switching information signals of a master device and a slave device to an output device, having the following steps: the method comprises the steps of receiving a master signal of a master device, separating the received master signal into a first information signal, a request signal and a control signal by means of a first receiving unit, receiving a slave signal of a slave device, providing the received slave signal as a second information signal by means of a second receiving unit or separating the received slave signal into a second information signal and a response signal by means of a second receiving unit, providing the first information signal of the first receiving unit and the second information signal of the second receiving unit as output signals to an output device in accordance with the control signal of the first receiving unit, providing the request signal of the first receiving unit to the output device and to the slave device, and providing the output device or the response signal of the slave device received on the basis of the request signal to the master device by means of the first receiving unit.
By means of the device according to the invention, it is possible to switch between the signals of two devices, that is to say the master device and the slave device, in a very simple and reliable manner and in this case to ensure that the master device always retains control over the signals to be transmitted and, if applicable, of the remaining processes.
The master device may be configured as a central controller. The master device may be configured in particular as a radio receiver with an output for a display unit, for example with a touch screen.
The slave device may be configured as a controller. The slave device can be configured in particular as a navigator with an output for a display unit, for example with a touch screen.
The output device may be designed as a display unit. The output device can be designed in particular as a flat screen with touch control.
The first receiving unit may be embodied, for example, as a Deserializer (Deserializer) or Splitter (Splitter). The first receiving unit may be configured to separate, demultiplex, or decompose the packetized signals. The first receiving unit may be designed in particular to decompose video signals, communication signals and control signals for static output (GPIOs) and to additionally convert or deserialize serialized received video signals into parallel RGB information. The control signal can also be realized here by the transmission of characters.
The second receiving unit may be designed as a deserializer or a splitter. The second receiving unit may be configured to separate, demultiplex, or decompose the packetized signals. The second receiving unit may be designed in particular for splitting up the video signal and the communication signal and/or for converting or deserializing a serialized received video signal into parallel RGB information.
The main signal is in particular in a combined, multiplexed or packetized signal. The main signal can have video signals, communication signals and control signals. The communication connection between the switching device and the main device may be configured as a bidirectional communication connection.
The slave signal is in particular a combined, multiplexed or packetized signal. The slave signal can have a video signal and a communication signal. However, the slave signal can also be a video signal only, wherein the communication, that is to say the transmission of the request signal and the response signal between the switching device and the slave device, can then take place via a further channel or in another form. The communication connection between the switching device and the slave device can be designed as a bidirectional communication connection.
The information signal may particularly have a video signal.
The response signal of the output means can in particular have a touch signal, that is to say a position indication on the touch screen.
The term "signal" within the framework of the invention is also understood to mean a packetized or multiplexed signal and/or signal component.
The concept of "interface" within the framework of the invention can be a device familiar to each expert, which is suitable for communicating or exchanging information. The concept for example also comprises a plurality of sub-interfaces, signal inputs and/or signal outputs.
Advantageously, the first and second receiving units are communicatively connected to each other and are configured to receive a control signal in order to provide the corresponding information signal to the output device in dependence on the control signal. In other words, the switching device is designed to output the information signal to the output device as a function of the control signal. The transmitted or output information signal can be either the first information signal or the second information signal. However, when using a signal processor or corresponding hardware known to the person skilled in the art in the switching path of the information signals, it is entirely conceivable to implement a soft smooth switching (Ü bergending) instead of a hard switching or to also implement a mixing of the two information signals of the master and slave to be switched. The transmission of the control signal to the second receiving unit can also be realized in particular by an inverter. This embodiment makes possible a simple and reliable signal transfer.
It is also advantageous if the switching device is designed to supply the slave device with a response signal received by the output device. It is particularly advantageous if the first receiving unit and the second receiving unit are communicatively connected to one another and if the second receiving unit is designed to receive the response signal of the first receiving unit and to supply it to the slave device and, if applicable, to receive the response signal received by the output device and to supply it to the slave device. This design makes it possible to distribute the timing-critical information from the output device to the master device and the slave device simultaneously. The entire query from the output device and the response thereto arrive at the master device and the slave device without additional delay.
It is furthermore advantageous if the first receiving unit is additionally designed to separate the master signal received from the master device into a configuration signal, wherein the switching device is designed to supply the configuration signal to the output device. The configuration signal may be used here to configure the device address within a network that additionally includes a master device, a slave device and an output device. In addition, the configuration signal can also be used to configure the transmission characteristics of the output signal or of the remote transmission channel between the switching device and the output device.
It is further advantageous to provide a transmitting unit which is designed to receive at least two signals from the group comprising the first information signal, the second information signal, the request signal and, if appropriate, the configuration signal and to package them for supply to the output device, and to transmit in addition a response signal received from the output device. The transmitting unit may be configured as a serializer or a combiner. With this configuration, multiplexed or packetized signals can be supplied to the output device, so that the number of necessary connections can be reduced.
It is further advantageous to provide a first logic gate, in particular a first and gate, which is communicatively connected on the output side to the first receiving unit and is also designed to receive the response signal of the output device and the response signal of the slave device and to transmit a corresponding output signal, and/or to provide a second logic gate, in particular a second and gate, which is communicatively connected or can be communicatively connected on the output side to the second receiving unit and is also designed to receive the request signal of the first receiving unit and the response signal of the output device and to transmit a corresponding output signal. By means of this embodiment, the signal paths in the switching device can be significantly reduced.
Drawings
The invention is explained in detail below by way of example on the basis of the accompanying drawings.
The figure is as follows:
fig. 1a to 1c are schematic views of a changeover device according to a first embodiment of the invention, and
figures 2a to 2b are schematic views of a transition device according to a second embodiment of the invention,
figure 3 is a schematic view of a transition device according to another embodiment of the invention,
fig. 4 is a schematic view of a transition device according to another embodiment of the present invention.
Detailed Description
In the following description of the preferred embodiments of the present invention, the same or similar reference numerals are used for elements shown in different drawings and functioning similarly, wherein repeated descriptions of such elements are omitted.
Fig. 1a to 1c show a switching device according to the invention, which is generally provided with the reference numeral 10.
The switching device 10 has a first interface 12, via which a communication connection to a main device 14 can be made. The switching device 10 is designed here to receive a main signal 16, which is represented in the drawing as an arrow 16, from the main device 14 via the first interface 12.
Furthermore, the switching device 10 has a second interface 18, via which a communication connection to a slave device 20 can be made. The interface device 10 is designed here to receive a slave signal 22, which is represented in the drawing as an arrow 22, from a slave device 20 via the second interface 18.
Furthermore, the switching device 10 has a third interface 24, via which the switching device can be connected in a communication manner to an output device 26. The interface device 10 is designed here to supply an output signal 28, which is represented in the drawing as an arrow 28, to the output device 26 via the third interface 24.
The switching device 10 according to the invention has a first receiving unit 30, which is designed to receive the main signal 16 and to split or demultiplex it into an information signal 32, a request signal 34 and a control signal 36, which are likewise represented in the drawing as arrows 32, 34 and 36. As indicated above, the first receiving unit 30 may additionally also be configured to separate the received main signal 16 additionally into the configuration signal 38. That is to say, in other words, a multiplexed or packetized main signal 16 is involved, which has a first information signal 32, a request signal 34, a control signal 36 and, where possible, a configuration signal 38. The first receiving unit 30 may be embodied here, for example, as a deserializer 30 or a splitter 30.
As can be seen from fig. 1a to 1c, the switching device 10 additionally has a second receiving unit 40, which is designed to receive the slave signal 22 and to separate or demultiplex it into a second information signal 42 and a response signal 44. That is to say, in other words, multiplexed or packaged slave signals 22 are involved, which contain both information signals 42 and response signals 44. The second receiving unit 40 can be designed, for example, as a deserializer 40 or a splitter 40.
Furthermore, the switching device 10 has a transmitting unit 46, which is designed to receive, pack or multiplex the first information signal 32, the second information signal 42, the request signal 34 and the configuration signal 38 and to supply them to the third interface 24 as the output signal 28 for the output device 26. The transmitting unit 46 may be embodied here, for example, as a serializer 46 or a combiner 46.
The configuration signal 38 may be used here to configure the device address within the network that also includes the master 14, the slave 20 and the output 26. That is, in other words, the devices 14, 20 and 26 may be addressed either by fixed or by variable addresses. In addition, the configuration signal 38 can also be used to configure the transmission characteristics of the output signal 28 or of a remote transmission channel between the switching device 10 and the output device 26.
Fig. 1b shows a switching process or switching path between the first information signal 32 and the second information signal 42. As explained above, the switchover takes place as a function of the control signal 36, which is separated from the main signal 16 by means of the first receiving unit 30. In detail, for this purpose, the output of the first information signal 32 for the first receiving unit 30 and the output of the second information signal 42 for the second receiving unit 40 are switched complementarily. The switching is carried out here by: the control signal 36 of the first receiving unit 30 is supplied via the converter 48 to the second receiving unit 40, so that only the first information signal 32 or the second information signal 42 is supplied to the transmitting unit 46 or to the output device 26. The respective solid and dashed arrows are intended to show how the outputs of the first information signal 32 for the first receiving unit 30 and the second information signal 42 for the second receiving unit 40 are switched over by a reversal of the triggering, i.e. by the reversal of the main signal 16 or control signal 36, respectively, and either the first information signal 32 (dashed arrow) or the second information signal 42 (solid arrow) is output.
However, if signal processors or corresponding hardware known to the skilled person are used in the switching paths of the information signals 32, 34, it is entirely conceivable in the switching device 10 according to the invention to implement a soft smooth switching instead of a hard switching or to implement a mixing of the two information signals 32, 42 of the master device 14 and the slave device 20 to be switched, without departing from the inventive idea.
FIG. 1c illustrates a request path (solid arrows) and a reply path (dashed arrows). Here, the first receiving unit 30 and the second receiving unit 40 are communicatively connected with the transmitting unit 46. The request signal 34 is thus received on the one hand from the second receiving unit 40, which provides this request signal to the slave device 20, and on the other hand from the transmitting unit 46, which provides the request signal to the output device 26. In operation, the slave device 20 and the output device 26 each receive a request signal 34, which is provided exclusively with an address.
Depending on the device to which it is directed, i.e. to the slave device 20 or the output device 26, the request is addressed or "spoken", and response signals 44 and 44' are sent, which are received again by the switching device 10 via the second interface 18 or the third interface 24. The response signal 44 received from the slave device 20, which is packed in the slave signal 22, is separated by the second receiving unit 40 and output to the first receiving unit 30. The response signal 44' received from the output device 26 is received by the transmitting unit 46 and output to the first receiving unit 30.
In order to reduce the number of signal paths, a first logic gate 50 is provided, which can be designed as a first and gate 50 and which is connected on the output side in communication with the first receiving unit 30. The first and gate 50 is connected on the input side to the second receiving unit 40 and to the transmitting unit 46 in a communicating manner. The first and gate 50 thus receives the response signal 44 of the slave device 20 and the response signal 44 'of the output device 26 and passes the corresponding output signals 44, 44' to the first receiving unit 30. The first receiving unit 30 provides the received response signal 44, 44' to the master device 14 on the first interface 12 or transmits this response signal to the master device 14.
Fig. 2a and 2b show a second embodiment of a transition device 10' according to the invention. The switching device 10' differs from the previously described device 10 in that the received slave signal 22 contains only the second information signal 42 and is separated from the response signal, i.e. transmitted via another channel or in another form. In the sense of the invention, the second interface 18 therefore comprises two inputs or channels for the second information signal 42 and the response signal 44.
Similar to fig. 1b, fig. 2a shows a switchover process or switchover path. The second receiving unit 40 therefore receives only the information signal 42 and, if appropriate after conversion thereof, passes this signal on to the transmitting unit 46, provided that a corresponding control signal 36 is present in an understandable manner. The signal separation or demultiplexing therefore does not have to be carried out by the second receiving means 40.
Similar to fig. 1c, a request path (solid arrows) and a reply path (dashed arrows) are shown in fig. 2 b. In contrast to fig. 1c, the request signal 34 is therefore no longer transmitted to the second receiving unit 40, but rather is supplied directly or via a further component 52, which may be designed as an interface 52, to the second interface 18 for the slave device 20. In contrast, the switching device 10' receives the response signal 44 again from the slave device 20 via the interface 52, which is transmitted via the and gate 50 to the first receiving unit 30.
Fig. 3 shows a further switching device 10 ″ according to the invention, in which, analogously to the embodiment 10 shown in fig. 1a to 1c, a request signal 34 is provided to the slave device 20 via a second receiving unit 40. In order to distribute or transmit the time-critical information from the output device 26 to the master device 14 and the slave device 20 at the same time, the second receiving unit 40 is connected to a transmitting unit 46 in order to obtain a response signal 44' of the output device 26 and to provide it to the slave device 20 or to transmit it thereto.
Both the first receiving unit 30 and the master device 14 and the second receiving unit 40 and the slave device 20 thus receive the response signal 44' of the output device 26.
Overall, the entire query from the output device 26 and the response to this therefore arrive at both the master device 14 and the slave device 20 without additional delay.
In order to reduce the number of signal paths, a second logic gate 52 is therefore provided, which can be designed as a second and gate 52 and which is connected on the output side in communication with the second receiving unit 40. The second and gate 52 is connected on the input side in communication with the first receiving unit 30 and the transmitting unit 46. The second and gate 52 therefore receives the response signal 44 'of the output device 26 and the request signal 34 of the first receiving unit 30 and passes the corresponding signals 34, 44' to the second receiving unit 30. The second receiving unit 40 provides the received response signal 44' of the slave device 20 to the second interface 18 or sends this signal to the slave device 20.
In contrast to fig. 3, fig. 4 shows a further switching device 10 "'according to the invention, which receives and transmits the request signal 34, the response signal 44' of the output device 26 and the response signal 44 of the slave device via the component 52 or the interface 52 according to fig. 2b and not via the second receiving unit 40.
Claims (13)
1. Switching device for switching information signals (32, 42) of a master device (14) and a slave device (20) to an output device (26), wherein the switching device (10, 10' ' ') is designed such that,
-separating the master signal (16) received from the master device (14) by means of the first receiving unit (30) into a first information signal (32), a request signal (34) and a control signal (36),
-providing or separating the slave signal (22) received from the slave device (20) as a second information signal (42) by means of a second receiving unit (40) into the second information signal (42) and a response signal (44),
-providing the first information signal (32) of the first receiving unit (30) and the second information signal (42) of the second receiving unit (40) as output signals (28) to the output means (26) in dependence on the control signal (36) of the first receiving unit (30),
-providing the request signal (34) of the first receiving unit (30) to the output device (26) and the slave device (20), and
-providing a received reply signal (44') of the output device (26) or of the slave device (20) based on the request signal (34) to the master device (14) by means of the first receiving unit (30).
2. Switching device (10, 10', 10 "') according to claim 1, characterized in that the first receiving unit (30) and the second receiving unit (40) are communicatively connected to each other, and the first receiving unit (30) and the second receiving unit (40) are configured to receive the control signal (36) in order to provide the corresponding information signal (32, 42) to the output device (26) in dependence on the control signal (36).
3. Switching device (10, 10', 10 "') according to claim 1 or 2, characterized in that the switching device (10, 10', 10" ') is designed to supply a received response signal (44 ') of the output device (26) to the slave device (20).
4. Switching device (10, 10', 10 "') according to claim 1 or 2, characterized in that the first receiving unit (30) and the second receiving unit (40) are communicatively connected to each other, and the second receiving unit (40) is designed to receive the request signal (34) of the first receiving unit (30) and to supply it to the slave device (20).
5. Switching device (10, 10', 10 "') according to claim 1 or 2, characterized in that the first receiving unit (30) is additionally designed to separate a configuration signal (38) from the main signal (16) received from the main device (14), wherein the switching device (10, 10', 10"') is designed to supply the configuration signal (38) to the output device (26).
6. Switching device (10, 10', 10 "') according to claim 1 or 2, characterized by a transmitting unit (46) which is designed to receive at least two signals from a group comprising the first information signal (32), the second information signal (42), the request signal (34) and to provide them in a packet to the output device (26) and to transmit a response signal (44 ') received from the output device (26).
7. The adapter device according to claim 1 or 2, characterized in that:
-a first logic gate, which is connected on the output side in communication with the first receiving unit (30) and is additionally designed to receive a response signal (44') of the output device (26) and a response signal (44) of the slave device (20) and to further transmit the respective output signals, and/or
-a second logic gate, which is or can be connected on the output side in communication with a second receiving unit (40) and which is additionally designed for receiving the request signal (34) of the first receiving unit (30) and the response signal (44') of the output device (26) and for further transmitting a corresponding output signal.
8. Switching device according to claim 1 or 2, characterized in that the master device (14) is designed as a radio receiver and/or the slave device (20) is designed as a navigator and/or the output device (26) is designed as a flat screen with touch control.
9. Switching device (10, 10', 10 "') according to claim 4, characterized in that the first receiving unit (30) is communicatively connected to the second receiving unit (40), and in that the second receiving unit (40) is designed to receive the request signal (34) of the first receiving unit (30) and to supply it to the slave device (20) and to receive the received response signal (44 ') of the output device (26) and to supply it to the slave device (20).
10. Switching device (10, 10', 10 "') according to claim 6, characterized by a transmitting unit (46) which is designed to receive at least two signals from a group comprising the first information signal (32), the second information signal (42), the request signal (34) and the configuration signal (38) and to pack them for supply to the output device (26) and to further transmit a response signal (44 ') received from the output device (26).
11. The adapter device of claim 7, wherein:
-a first and gate, which is connected on the output side in communication with the first receiving unit (30) and is additionally designed to receive a response signal (44') of the output device (26) and a response signal (44) of the slave device (20) and to further transmit the respective output signals, and/or
-a second and gate, which is or can be connected on the output side in communication with a second receiving unit (40) and which is additionally designed for receiving the request signal (34) of the first receiving unit (30) and the response signal (44') of the output device (26) and for further transmitting a corresponding output signal.
12. Method for switching information signals (32, 42) of a master device (14) and a slave device (20) to an output device (26), having the following steps:
-receiving a master signal (16) of a master device (14),
-separating the received main signal (16) into a first information signal (32), a request signal (34) and a control signal (36) by means of a first receiving unit,
-receiving a slave signal (22) of a slave device (20),
-providing the received slave signal (22) as a second information signal (42) by means of a second receiving unit or separating the received slave signal (22) into the second information signal (42) and a reply signal (44) by means of a second receiving unit (40),
-providing the first information signal (32) of the first receiving unit (30) and the second information signal (42) of the second receiving unit (40) as output signals (28) to the output means (26) in dependence on the control signal (36) of the first receiving unit (30),
-providing the request signal (34) of the first receiving unit (30) to the output device (26) and to the slave device (20), and
-providing a response signal (44') of the output device (26) or of the slave device (20) to the master device (14) by means of the first receiving unit (30) as received on the basis of the request signal (34).
13. The method of claim 12 having the additional steps of:
-providing the slave device (20) with the received reply signal (44') of the output device (26).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014223760.2A DE102014223760A1 (en) | 2014-11-20 | 2014-11-20 | Switching device for switching information signals of a master device and a slave device to an output device |
| DE102014223760.2 | 2014-11-20 |
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| Publication Number | Publication Date |
|---|---|
| CN105630729A CN105630729A (en) | 2016-06-01 |
| CN105630729B true CN105630729B (en) | 2020-12-01 |
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| CN201510799153.1A Active CN105630729B (en) | 2014-11-20 | 2015-11-19 | Switching device for switching information signals of master device and slave device to output device |
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| Country | Link |
|---|---|
| CN (1) | CN105630729B (en) |
| DE (1) | DE102014223760A1 (en) |
| FR (1) | FR3029044B1 (en) |
| IT (1) | ITUB20155655A1 (en) |
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| DE102021200095A1 (en) | 2021-01-08 | 2022-07-14 | Zf Friedrichshafen Ag | Communication network for a vehicle and method for operating a communication network |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105630729A (en) | 2016-06-01 |
| DE102014223760A1 (en) | 2016-05-25 |
| FR3029044A1 (en) | 2016-05-27 |
| FR3029044B1 (en) | 2018-03-16 |
| ITUB20155655A1 (en) | 2017-05-17 |
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