TWI507042B - Monitor module - Google Patents

Description

Monitoring module

The present invention relates to a monitoring module, and more particularly to a monitoring module capable of efficiently transmitting a video stream of a high quality format.

Figure 1 shows a screen displayed by a display of a conventional monitoring module. As shown in FIG. 1, the conventional baby monitoring module uses a 2.4G proprietary protocol radio frequency (RF) circuit as a transmission interface between a video camera and a portable monitor. The amount of data transmitted by the radio frequency circuit (RF) is small, so the general image data is only in the video graphics array (English: Video Graphics Array, VGA for short) format. In the display of FIG. 1, four image images of VGA format are respectively displayed.

However, if the 2.4G exclusive protocol RF circuit is used to wirelessly transmit images, the bandwidth of the RF circuit is always the bottleneck of image quality. Taking a 3 Mbps radio frequency circuit (RF) as an example, to transmit an H.261 720p image, frame rates of about 20 fps are required.

Therefore, if the monitor of the baby monitor module is to display the image in the High Definition (HD) format, the 2.4G exclusive protocol radio frequency (RF) cannot be used for wireless transmission according to the conventional technology, because 2.4G The proprietary protocol RF circuit has a low transmission speed, making it impossible to efficiently transmit images in high definition (HD) format.

Therefore, it is necessary to develop a monitoring module capable of efficiently transmitting a video stream of a high definition (HD) format; or a monitoring module capable of simultaneously transmitting more video streams of a VGA format.

An object of an embodiment of the present invention is to provide a monitoring module. It is an object of an embodiment to provide a monitoring module capable of efficiently transmitting a video stream of a high quality format.

According to an embodiment of the invention, a monitoring module is provided. The monitoring module includes at least one first image transmitting device, at least one second image transmitting device, and a display module. The at least one first image transmitting device comprises an image module and a first exclusive protocol radio frequency circuit. The image module is configured to capture a first image data to generate a first image stream. The first proprietary radio frequency circuit transmits the first video stream in a first channel. The at least one second image transmitting device comprises an image module and a second exclusive protocol RF circuit. The image module is configured to capture a second image data to generate a second image stream. The second proprietary radio frequency circuit transmits the second video stream in a second channel different from the first channel.

The display module includes a first exclusive protocol RF circuit, a second exclusive protocol RF circuit, an image processing circuit, and a display. First exclusive agreement The frequency circuit corresponds to the first exclusive protocol radio frequency circuit of the first image transmitting device for receiving the first image stream of the first image transmitting device. The second exclusive protocol radio frequency circuit corresponds to the second exclusive protocol radio frequency circuit of the second image transmitting device for receiving the second image stream of the second image transmitting device. The image processing circuit is configured to process the first and second image streams to generate an image data. The display is coupled to the image processing circuit to display image data.

The first exclusive protocol radio frequency circuit of the display module receives a beacon signal transmitted in a first channel according to a fixed time interval, and in a time interval of two adjacent beacon signals, the first exclusive protocol radio frequency circuit is in accordance with one The first predetermined sequence receives the first video streams sent by the first image transmitting device, and the second exclusive radio frequency circuit receives the second image streams sent by the second image transmitting device in a second predetermined sequence.

In an embodiment, the monitoring module further includes a first control circuit and a second control circuit. The first control circuit is coupled to the first exclusive protocol RF circuit of the display module, the second control circuit is coupled to the second exclusive protocol RF circuit of the display module, and the first control circuit and the second control circuit are synchronized according to a synchronization signal. .

In an embodiment, the image quality of the first image stream transmitted by the second image transmitting device is higher than the image quality of the second image stream transmitted by the first image transmitting device.

In one embodiment, the second exclusive protocol RF circuit of the display module is transmitted The transmission rate is greater than the transmission rate of the first proprietary radio circuit of the display module.

In one embodiment, at least one of the first proprietary radio frequency circuit and the second proprietary radio frequency circuit uses a 2.4G proprietary frequency.

In an embodiment, the image processing circuit further includes an image dividing circuit to cause the display to display the image streams in a divided manner.

An image signal transmission method is provided according to an embodiment of the invention. The image signal transmission method is configured to receive a plurality of video streams respectively transmitted by a first channel and a second channel, and the method includes the following steps. A beacon signal transmitted in a first channel in accordance with a fixed time interval is received. In the time interval of two adjacent beacon signals, a plurality of video streams respectively transmitted by the first channel and the second channel are received. Processing the image streams and generating an image data. Receive and display image data.

In an embodiment, the image quality of the image streams transmitted by the second channel is higher than the image quality of the image streams transmitted by the first channel.

A monitoring module according to an embodiment of the present invention includes a first exclusive protocol radio frequency circuit and a second exclusive protocol radio frequency circuit having different frequency domains, which can simultaneously receive video stream signals in a frequency division multiplexing manner, thereby enabling Improve the speed at which the monitoring module receives the video stream. And the plurality of second exclusive protocol radio frequency circuits can be used to transmit a video stream of a high-definition format, thereby overcoming the shortcoming of the single second proprietary radio frequency circuit that cannot effectively transmit the video stream of the high-definition format, thereby achieving high effective transmission. The function of image streaming in image quality format. In addition, in one embodiment, only one beacon signal Beacon is issued within a fixed time interval, so that the requirements of safety regulations can be met. In an embodiment, the first control circuit and the second control circuit can be synchronized according to the synchronization signal Sync, so that the video streams can be correctly received.

Other objects and advantages of the present invention will become apparent from the technical features disclosed herein. The above and other objects, features, and advantages of the invention will be apparent from

2 is a functional block diagram of a monitoring module in accordance with an embodiment of the present invention. As shown in FIG. 2 , the monitoring module 100 a includes at least one first image transmitting device 110 , at least one second image transmitting device 120 , and a display module 130 .

The first image transmitting device 110 includes an image module 111 and a first exclusive protocol RF circuit 131. The image module 111 is configured to capture a first image data to generate a first image stream. The first exclusive protocol RF circuit 131 transmits the first video stream in a first channel. In an embodiment, the first image transmitting device 110 may further include a control circuit 112. The control circuit 112 is coupled to the image module 111 and the first exclusive protocol RF circuit 131 for controlling the image module 111 and the first exclusive protocol RF circuit 131.

The second image transmitting device 120 includes an image module 111 and a second It is a protocol RF circuit 132. The image module 111 is configured to capture a second image data to generate a second image stream. The second exclusive protocol RF circuit 132 transmits the second video stream in a second channel. In an embodiment, the second image transmitting device 120 may further include a control circuit 113. The control circuit 113 is coupled to the image module 111 and the second exclusive protocol RF circuit 132 for controlling the image module 111 and the second exclusive protocol RF circuit 132.

The display module 130 includes a first exclusive protocol RF circuit 231, a second exclusive protocol RF circuit 232, an image processing circuit 242, and a display 241.

The first exclusive protocol radio frequency circuit 231 corresponds to the first exclusive protocol radio frequency circuit 131 of the first image transmitting device 110 for receiving the first video stream of the first image transmitting device. The second exclusive protocol RF circuit 232 corresponds to the second exclusive protocol RF circuit 132 of the second image transmitting device 120 for receiving the second image stream of the second image transmitting device 120. The image processing circuit 242 is configured to process the first image stream and the second image stream to generate an image data. The display 241 is coupled to the image processing circuit 242 to display image data.

The first exclusive protocol radio frequency circuit 231 of the display module 130 receives a beacon signal Beacon transmitted in a first channel according to a fixed time interval, and in a time interval of two adjacent beacon signals Beacon, the first exclusive protocol radio frequency The circuit 231 receives the first video streams sent by the first image transmitting device 110 in a first predetermined sequence, and the second exclusive protocol RF circuit 232 receives the second image transmitting devices 120 in a second predetermined order. Second image Streaming. In this way, the first image transmitting device 110 and the second image transmitting device 120 need only transmit one beacon signal Beacon in a fixed time interval, and do not need to issue two beacon signals Beacon, and can conform to the specifications of the safety regulations.

In addition, the first channel is different from the second channel. That is, the first channel and the second channel do not overlap each other. In an embodiment, the first channel and the second channel may all be in different frequency ranges, for example, the first channel is in the frequency range of 2.4G, and the second channel is in the frequency range of 5G.

In an embodiment, the first channel and the second channel may all be in the same frequency range, for example, a frequency range of 2.4G or 5G. In this embodiment, the display module 130 can automatically determine whether to receive the video stream by the exclusive protocol radio frequency circuit in the display module 130, or can receive the radio frequency circuit by any one of the display modules 130. Then, the display module 130 automatically determines the video stream that is transmitted from the exclusive protocol radio frequency circuit of the first image transmitting device 110 and the second image transmitting device 120, so that the correct image can be combined.

Hereinafter, the operation mode of an embodiment of the present invention will be described in more detail with the case where there are five first video transmission devices 110 and four second video transmission devices 120. It should be understood that the present invention does not limit the number of first image transmitting devices and second image transmitting devices, and those skilled in the art can change them according to requirements.

Figure 3 shows the first exclusive agreement RF circuit and the second exclusive agreement RF The timing diagram of the road receiving image data. As shown in FIG. 3, in an embodiment, the first dedicated radio frequency circuit 231 of the first image transmitting apparatus 110 can receive five video streams R1 R R5 in the first predetermined order, and the first The second exclusive protocol radio frequency circuit 232 of the second image transmitting device 120 can receive a video stream HD of one High Definition format in a second predetermined order. Alternatively, in an embodiment, the second exclusive protocol radio frequency circuit 232 of the second image transmitting device 120 can receive the video streams R6 R R9 of the four VGA formats in another second predetermined sequence. In addition, the image quality of the high definition format video stream is higher than that of the VGA format video stream. Moreover, in an embodiment, the transmission rate of the second exclusive protocol radio frequency circuit 232 of the display module 130 may be greater than the transmission rate of the first exclusive protocol radio frequency circuit 231 of the display module 130. According to the embodiment, four second image transmitting devices 120 are used to transmit a high-quality image stream HD, and a second exclusive protocol RF circuit 232 is used to receive a high-quality image stream HD. The monitoring module 100a can be configured to efficiently transmit a video stream of a high definition (HD) format.

According to this embodiment, since the first exclusive protocol radio frequency circuit 231 operates in the first channel, and the second exclusive protocol radio frequency circuit 232 operates in the second channel, the plurality of video streams can be simultaneously received to increase the speed of the video stream. . The first channel and the second channel can be in the same frequency range, such as 2.4G or 5 G. There will be many channels in a frequency range. As long as the first channel and the second channel do not overlap each other, the functions of data transmission can be achieved without mutual interference.

In addition, in an embodiment, the first channel and the second channel may also have different frequency ranges, the first channel may be in the frequency range of 2.4G, and the second channel may be in the frequency range of 5G, The first channel and the second channel do not overlap each other. Therefore, the first exclusive protocol RF circuit 131 and the second exclusive protocol RF circuit 132 can receive the respective video streams simultaneously by using the frequency division multiplexing method without interfering with each other.

In addition, since the first exclusive protocol radio frequency circuit 231 receives the video streams R1 R R5 according to the first predetermined sequence, it can receive the video streams R1 R R5 without interfering with each other by using the time division multiplexing mode. The second receiving end radio frequency circuit 232 receives the video stream HD of one High Definition format according to the second predetermined order. Alternatively, the second exclusive protocol RF circuit 232 receives the video streams R6 R R9 according to another second predetermined sequence, and may also receive the video streams R6 R R9 without using mutual interference in a time division multiplexing manner. .

The beacon signal Beacon includes information about the video streams transmitted by the radio frequency circuits, and the video stream can be processed according to the beacon signal Beacon to generate an image data for the display 241 to play the image.

In addition, in an embodiment, the image processing circuit 242 can be a video frame. The circuit is configured to divide the video streams to enable the display 241 to display the video streams in a divided manner. 4A shows a screen displayed by a display of a monitoring module in accordance with an embodiment of the present invention. As shown in FIG. 4A, the display 241 displays the video streams R1 to R9 in the VGA format in a nine-square grid manner. 4B shows a screen displayed by the display of the monitoring module in accordance with an embodiment of the present invention. As shown in FIG. 4B, the display 241 displays the video stream HD of the high-definition format in its upper left block, and the video streams R1 R R5 of the VGA format are respectively displayed on the right side and the lower side of the upper left block.

FIG. 5 is a functional block diagram of a monitoring module according to an embodiment of the present invention. The monitoring module 100b of the embodiment of FIG. 5 is substantially the same as the monitoring module 100a of the embodiment of FIG. 2, and the same elements are denoted by the same reference numerals, and only one of them will be described below. As shown in FIG. 5 , in an embodiment, the display module 130 can further include a first control circuit 221 and a second control circuit 222 . The first control circuit 221 is coupled to the first exclusive protocol radio frequency circuit 231 of the display module 130 for controlling the first exclusive protocol radio frequency circuit 231. The second control circuit 222 is coupled to the second exclusive protocol RF circuit 232 of the display module 130 for controlling the second exclusive protocol RF circuit 232. Since the display module 130 uses two different control circuits, the first control circuit 221 and the second control circuit 222 are synchronized by a synchronous signal Sync to correctly receive the video streams.

FIG. 6 shows a flow of an image signal transmission method according to an embodiment of the present invention Figure. As shown in FIG. 6, in an embodiment, an image signal transmission method is provided. The image signal transmission method is configured to receive a plurality of image streams respectively transmitted by a first channel and a second channel, and includes the following steps.

Step S02: Receive a beacon signal Beacon transmitted in the first channel according to a fixed time interval.

Step S04: Receive a plurality of video streams respectively transmitted by the first channel and the second channel in a time interval between two adjacent beacon signals Beacon. More specifically, as shown in FIG. 3, the video streams R1 R R5 are received according to a first predetermined sequence; and the video streams R6 R R9 are received according to a second predetermined sequence. Alternatively, the video streams R1 R R5 are received according to a first predetermined order; and the video stream HD of one High Definition format is received according to another second predetermined order.

Step S06: processing the image streams and generating an image data.

Step S08: receiving and displaying the image data. In an embodiment, the video streams may be divided to enable the display 241 to display the video streams in a divided manner.

As described above, the monitoring modules 100a and 100b according to an embodiment of the present invention include a first exclusive protocol RF circuit 231 having different first channels and second channels, and a second exclusive protocol RF circuit 232 capable of receiving multiple simultaneously. The video stream is streamed to increase the speed of the video stream. In an embodiment, the first channel and the second channel can have different frequency ranges, and can be divided into multiple working parties. The signal of the video stream is simultaneously received, so that the speed at which the monitoring module 100a receives the video stream can be improved. And the second exclusive protocol radio frequency circuit 132 of the plurality of second image transmitting devices 120 can be used to transmit the video stream HD in a high quality format, thereby overcoming the failure of the single second exclusive protocol RF circuit 132 to efficiently transmit the image in the high quality format. Disadvantages of the stream, the second exclusive protocol RF circuit 232 of the display module 130 is used to receive the video stream HD in the high-definition format in a time division multiplexing manner, so as to effectively transmit the image in the high-quality format. Streaming function. In addition, in the present invention, only one beacon signal Beacon is issued within a fixed time interval, so that it can meet the requirements of safety regulations.

In addition, in an embodiment, if the display module 130 uses two different control circuits, the first control circuit 221 and the second control circuit 222 can be synchronized according to the synchronization signal Sync, so that the two can be correctly received. Video streaming.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention.

100a‧‧‧Monitor module

100b‧‧‧Monitor module

110‧‧‧First image transfer device

111‧‧‧Image Module

112‧‧‧Control circuit

113‧‧‧Control circuit

120‧‧‧Second image transfer device

130‧‧‧Display module

131‧‧‧First Exclusive Agreement RF Circuit

132‧‧‧Second exclusive agreement RF circuit

221‧‧‧First control circuit

222‧‧‧Second control circuit

231‧‧‧First Exclusive Agreement RF Circuit

232‧‧‧Second exclusive agreement RF circuit

241‧‧‧ display

242‧‧‧Image Processing Circuit

R1~R9‧‧‧ VGA format video stream

Video streaming in HD‧‧‧high quality format

Figure 1 shows a screen displayed by a display of a conventional monitoring module.

2 is a functional block diagram of a monitoring module in accordance with an embodiment of the present invention.

FIG. 3 is a timing diagram showing the first exclusive protocol RF circuit and the second exclusive protocol RF circuit receiving image data.

4A shows a screen displayed by a display of a monitoring module in accordance with an embodiment of the present invention.

4B shows a screen displayed by the display of the monitoring module in accordance with an embodiment of the present invention.

FIG. 5 is a functional block diagram of a monitoring module according to an embodiment of the present invention.

FIG. 6 is a flow chart showing a method for transmitting video signals according to an embodiment of the present invention.

100a‧‧‧Monitor module

110‧‧‧First image transfer device

111‧‧‧Image Module

112‧‧‧Control circuit

113‧‧‧Control circuit

120‧‧‧Second image transfer device

130‧‧‧Display module

131‧‧‧First Exclusive Agreement RF Circuit

132‧‧‧Second exclusive agreement RF circuit

221‧‧‧First control circuit

222‧‧‧Second control circuit

231‧‧‧First Exclusive Agreement RF Circuit

232‧‧‧Second exclusive agreement RF circuit

241‧‧‧ display

242‧‧‧Image Processing Circuit

Claims (12)

A monitoring module includes: at least one first image transmitting device, comprising: an image module for capturing a first image data to generate a first image stream; and a first exclusive protocol RF circuit, Transmitting the first video stream by using a first channel; the at least one second image transmitting device includes: an image module for capturing a second image data to generate a second image stream; a second exclusive radio frequency circuit for transmitting the second video stream with a second channel different from the first channel; and a display module comprising: a first exclusive protocol radio frequency circuit corresponding to the first image transmitting device The first exclusive protocol radio frequency circuit is configured to receive the first image stream of the first image transmitting device; a second exclusive protocol radio frequency circuit corresponding to the second exclusive protocol radio frequency circuit of the second image transmitting device, The second image stream is received by the second image transmitting device; an image processing circuit is configured to process the first and second image streams to generate an image data; a display coupled to the image processing circuit to display the image data; wherein the first exclusive protocol RF circuit of the display module receives a beacon signal transmitted in the first channel according to a fixed time interval, and The first exclusive protocol radio frequency circuit receives the first video streams sent by the first image transmitting device in a first predetermined sequence, and the second exclusive protocol radio frequency circuit is in the time interval of the beacon signal. Receiving, by the second predetermined sequence, the second video streams sent by the second image transmitting device. The monitoring module of claim 1, further comprising: a first control circuit coupled to the first exclusive protocol radio frequency circuit of the display module; and a second control circuit coupled to the display module The second exclusive protocol radio frequency circuit of the group, wherein the first control circuit and the second control circuit are synchronized according to a synchronization signal. The monitoring module of claim 1, wherein the image quality of the first image stream transmitted by the second image transmitting device is higher than the second image stream transmitted by the first image transmitting device The quality of the picture. The monitoring module of claim 3, wherein the transmission rate of the second exclusive protocol radio frequency circuit of the display module is greater than the transmission rate of the first exclusive protocol radio frequency circuit of the display module. The monitoring module of claim 1, wherein at least one of the first channel and the second channel is a 2.4G exclusive protocol frequency One channel in the middle. The monitoring module of claim 1, wherein the image processing circuit further comprises an image dividing circuit to cause the display to display the image streams in a grid. The monitoring module of claim 1, wherein the first pass or the second pass is in the same frequency range. The monitoring module of claim 1, wherein the first pass or the second pass is in a different frequency range. An image signal transmission method for receiving a plurality of video streams respectively transmitted by a first channel and a second channel, the image signal transmission method comprising: receiving a message transmitted by the first channel according to a fixed time interval a plurality of video streams respectively transmitted by the first channel and the second channel in a time interval between two adjacent beacon signals; processing the image streams and generating an image data; and receiving And display the image data. The image signal transmission method according to claim 9, wherein the image quality of the image streams transmitted by the second channel is higher than the image quality of the image streams transmitted by the first channel. The image signal transmission method as described in claim 9 of the patent application scope, Wherein the first pass or the second pass is in the same frequency range. The image signal transmission method of claim 9, wherein the first pass or the second pass is in a different frequency range.