Patent 11284177 - Automatic identification of a wireless microphone, a body-pack transmitter or a body-pack receiver > Description
The present application is a Continuation of U.S. patent application Ser. No. 16/542,541 filed on Aug. 16, 2019, which claims benefit of foreign priority from of German Patent Application No. 10 2018 120 455.8, filed on Aug. 22, 2018, the disclosures of which are incorporated herein by reference in their entirety.
The invention concerns an automatic identification of a wireless microphone, a body-pack transmitter having an audio input or a body-pack receiver for audio playback by way of an earphone, as well as a corresponding method.
Wireless audio transmission systems for stage equipment usually include a plurality of mobile devices like wireless microphones, body-pack transmitters with an audio input for microphones or guitar pickups as well as body-pack receivers with audio output, for example for in-ear monitors. In that respect the various mobile devices use different radio channels or radio frequencies.
Normally the wireless microphones, body-pack transmitters and body-pack receivers which are being used at the same time are fixedly associated with different artists, instruments or stage positions and are correspondingly individually programmed. That includes for example so-called pairing with a fixed transmitter or receiver at a counterpart or base station. That association which often requires frequency planning is also important for connection to a mixing desk and is set up and tested in a sound check which is usually carried out several hours before a stage appearance. As the wireless microphones, body-pack transmitters and body-pack receivers which are being used at the same time generally respectively look alike they can contain electronic displays (for example LCD, LED) on which the respective radio frequency or radio channel being used or other alphanumeric information is displayed (for example the name of the artist with which the device is associated, or a position like for example “Background 1”, “Background 2” and so forth). In that way the pre-programmed mobile devices can be more easily associated with the corresponding artist or instrument upon appearing.
In that respect however there is the problem that the displays only function, and thus the association can only be recognized, when the mobile devices are switched on. Frequently however, between the sound check and the appearance, the mobile devices are frequently switched off and gathered up, for example for secure safekeeping or for charging up the batteries. Admittedly each mobile device internally stores the displayed information, but that cannot be seen on the mobile device when it is switched off. When a given mobile device is required under some circumstances all mobile devices have to be switched on in order to obtain the association information and to find the mobile device that is being sought. In practice therefore the mobile devices are often identified by hand-written stickers, which is labor-intensive and prone to error. For example stickers can come loose or be swapped over or the writing can be illegible.
An object of the present invention is to provide an automatic identification for a mobile audio device like a wireless microphone, a body-pack transmitter with audio input or a body-pack receiver for an earphone.
The invention affords an automated way of attaining the above-specified object.
According to the invention a mobile audio device has a display which even when the power supply is switched off continues to display the last-displayed information at least for some hours. That information includes alphanumeric identification information, for example an identification of the transmission channel being used, by a transmission frequency, a channel number or a text. That ensures, even after the microphone, body-pack transmitter or body-pack receiver is switched off, for example even when changing the battery or battery pack, that the association information remains readable. In addition a specific mobile device which is being sought can be found more easily and more quickly among a number of switched-off mobile devices because the mobile devices do not first have to be all individually switched on in order to be able to read the display.
A wireless microphone according to the invention or a body-pack transmitter according to the invention with an audio output is disclosed. A wireless receiver according to the invention is also disclosed. Further advantageous embodiments are described.
Embodiments further concern an audio transmission system comprising a plurality of mobile devices according to the invention and a corresponding method for automatic identification of a wireless microphone, body-pack transmitter or body-pack receiver by means of a display.
According to an aspect the identification of the transmission channel being used can also be represented by a graphic symbol, like for example a logo. That can be transmitted to the wireless microphone, the body-pack transmitter or body-pack receiver and displayed there on a display which is so designed that the display remains visible even after the device is switched off.
Further details and advantageous embodiments are shown in the drawings in which:
As an alternative to the arrangement shown in
Instead of the channel numbers illustrated by way of example in
In an embodiment the electronic display retains the last-displayed identification without a power feed after the device is switched off and continues to display it. In that case the display of the mobile device can be in the form of so-called electronic paper (e-paper, e-ink), that is to say a passive display based on the principle of electrophoresis. In that case microcells which contain positively and negatively charged light and dark particles respectively serve as pixels of the display. When the display is switched on the microcells are exposed to an electric field, in which case depending on the polarity of the field the light or the dark particles move to the visible side of the microcell and cause the pixel to appear either as light or dark. Each pixel of the display can be made separately light or dark by individual actuation of the electric field for each microcell. If the mobile device and therewith the display are switched off the particles remain at their position so that the last-displayed information continues to be displayed for a very long time in the display. With the currently known electronic paper the display can continue to be displayed for several days.
In another embodiment the electronic display has a dedicated power supply which can adequately supply the display with power for at least several hours in order to display the identification. In that case the display can be for example in the form of a power-saving liquid crystal display (LCD) or the like, which has a dedicated power supply like for example a capacitor, with which the displayed information is maintained for at least several hours.
In an embodiment the invention concerns a mobile wireless transmitter (body-pack transmitter) within an audio transmission system, wherein the transmitter has a display for representing an automatic alphanumeric identification of the wireless connection being used, and wherein the identification is displayed at the switched-on transmitter and wherein the display of the identification continues to remain visible even when the transmitter is switched off. Such a body-pack transmitter is shown in
In another embodiment the invention concerns a mobile wireless receiver (body-pack receiver) within an audio transmission system, wherein the receiver has a display for representing an automatic alphanumeric identification of the wireless connection in use. The identification is displayed at the switched-on receiver and the display of the identification is maintained visible even after the receiver is switched off. Externally such a body-pack receiver can look for example like the body-pack transmitter shown in
In similar embodiments the identification includes a graphic symbol which is displayed on a display device. The identification can also include a color if the display is a colored display and preferably retains the displayed color even after the body-pack transmitter or the receiver is switched off. The symbol and/or the color can be input or selected at a base station connected to the mobile device (body-pack transmitter or receiver). The mobile device can have a reception interface in order thereby to receive data for determining a radio transmission channel used by the mobile device and to correspondingly set its radio interface. In addition the reception interface can receive the identification data for the respective mobile device, which are then displayed as an alphanumeric or graphic identification. In addition the reception interface can also receive further data or use only a part of the transmitted identification data for display purposes. In particular it can be the case that the identification information displayed at the switched-on microphone, body-pack transmitter or body-pack receiver involves only a part of the transmitted identification information while the identification information displayed after the mobile device is switched off in accordance with a pre-configuration includes at least another part of the transmitted identification data. In an embodiment the reception interface wirelessly receives the data from the same base station to which the mobile device (in the case of the body-pack transmitter) sends audio data or from which it receives audio data (in the case of the body-pack receiver). In another variant however it is also possible for the reception interface to receive the data from another base station wirelessly or in contact-connected relationship, for example a central configuration unit for a wireless audio transmission system.
In a further embodiment the invention concerns an audio transmission system having a plurality of wireless mobile transmitters and/or receivers, wherein the transmitters and/or receivers each have a respective display for representing an automatic alphanumeric or graphic identification of the respective wireless connection in use. In that case the identification is displayed at the switched-on transmitter and/or receiver and the display of the identification remains visible even when the transmitter and/or receiver is switched off.
In a further embodiment the invention concerns a method of automatic identification of a wireless microphone, body-pack transmitter or body-pack receiver by means of an automatic display, wherein the display displays an item of identification information and wherein the displayed identification information is maintained visible on the display even when the microphone, body-pack transmitter or body-pack receiver is switched off. In that way even the switched-off microphone or the switched-off body-pack transmitter or body-pack receiver can be associated without first having to be switched on.
The invention is advantageous for stage hands, for example stage technicians and artists, but also renters and users of wireless audio transmission systems.
The displayed information can for example also include device-specific values for management and identification of the device like the current or last IP address of the device, the current firmware version or the network host name. In this way the invention can be advantageously used in particular also for system integrators or IT integrators.