WO2000008809A1 - Apparatus controller, device and method for controlling data transmission of digital apparatus, and data transmission control system - Google Patents
Apparatus controller, device and method for controlling data transmission of digital apparatus, and data transmission control system Download PDFInfo
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- WO2000008809A1 WO2000008809A1 PCT/JP1999/004271 JP9904271W WO0008809A1 WO 2000008809 A1 WO2000008809 A1 WO 2000008809A1 JP 9904271 W JP9904271 W JP 9904271W WO 0008809 A1 WO0008809 A1 WO 0008809A1
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- 230000005540 biological transmission Effects 0.000 title claims description 397
- 238000000034 method Methods 0.000 title claims description 37
- 238000012545 processing Methods 0.000 claims abstract description 203
- 238000001514 detection method Methods 0.000 claims description 69
- 238000003384 imaging method Methods 0.000 claims description 57
- 238000012544 monitoring process Methods 0.000 claims description 48
- 238000012937 correction Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims 1
- 230000005021 gait Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 24
- 238000007906 compression Methods 0.000 description 12
- 230000006835 compression Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- 238000012806 monitoring device Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013144 data compression Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/62—Establishing a time schedule for servicing the requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/23406—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving management of server-side video buffer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/23424—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving splicing one content stream with another content stream, e.g. for inserting or substituting an advertisement
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/4223—Cameras
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/44004—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video buffer management, e.g. video decoder buffer or video display buffer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/44016—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving splicing one content stream with another content stream, e.g. for substituting a video clip
Definitions
- the present invention relates to a device control device, a data transmission control device and method for a digital device, and a data transmission control system, and particularly to, for example, a digital camera such as a digital camera and monitoring means for monitoring the device.
- the present invention relates to a data transmission control device and method for a digital device for controlling data transmission between the devices.
- the operation method of this type of digital device is to activate the digital device such as a camera or the like by using a command packet from the operation and control means such as a personal computer, or to control external devices. Triggering of digital equipment was controlled by control from the means.
- the data receiving device side individually communicates with the data transmitting device side. Send request If this is done, the operation state of the data transmission device and its channel must first be queried, which causes a problem that the traffic increases and the processing amount of each device increases.
- the local bus has conventionally been the network backbone. Since the data transmission is not as fast as possible, the data receiving device connected to the local bus should connect the bucket transmission control means between the oral bus and the backbone to transmit only the necessary data.
- the required data changes with time, if the data sending device is switched by an instruction, etc., there is an error in the time from when the switching instruction is sent to when the device is switched, so accurate control is performed. There was a problem that I could not do this.
- the present invention has been made to solve the above-mentioned conventional problems.
- the present invention provides a means for setting a designated time for operating a device from the outside in advance, and providing means for detecting the designated time. As a result of operating the digital device, a predetermined timing is used without using the instruction bucket to operate the digital device. It is a first object of the present invention to provide a data transmission control device and method for a digital device that can accurately control the operation of the digital device.
- a data transmission end time is set in advance, and when the time comes, the operation of the digital device is stopped.
- the switching request when stopping reception of image data from a transmitting image information device and switching to reception of image data from another image information device, the switching request may be generated in the middle of the I frame. In such a case, the image data is switched between waiting for the next I-frame and synchronized until the next I-frame.
- a third object is to provide a data transmission control device and method for a digital device that can provide the highest image quality without interruption.
- the present invention relates to a data transmission device such as a plurality of image pickup means and a data reception device such as a plurality of monitoring means connected to a network connected to a manager for controlling data transmission to transmit data between devices.
- the data transmission is performed by the manager according to the data or the data transmission status without having to individually query the data transmission device of the other party from the data receiving device.
- the amount of data to be transmitted is set to be smaller than the amount of data that can be transmitted, and the transmission of the data group is transmitted in the shortest time.
- the provision of a data transmission control device and method of a digital device which can avoid truncation of transmission data when switching data transmission groups by providing a data transmission device.
- the data transmission control device for a digital device according to the present invention is provided with means for setting a designated time for operating the device from the outside in advance, providing means for detecting the designated time, and activating the device when the designated time is detected. It is like that.
- the present invention does not use instruction packets to operate the digital device, and the digital device device can accurately control the operation of the digital device at a predetermined timing. An overnight transmission control device is obtained.
- the data transmission control device for a digital device is provided with a means for previously setting a specified time at which a data transmission end time is specified in data transmission from the device, and detecting the specified time. However, when the time is detected, the operation of the device is stopped.
- the present invention competes for data transmission from another device to transmit next
- a data transmission control device for digital equipment that can use the transmission path with maximum efficiency can be obtained.
- a data transmission control device for a digital device, in which transmission of image data from an imaging transmission unit to a monitoring unit is performed by designating a switching time of the imaging transmission unit in advance in response to a switching request of the imaging transmission unit. A time is set, a means for detecting the specified time is provided, and a request to stop receiving image data from the image transmitting means during transmission and switch to receiving image data from another image information device is issued. Even if it occurs in the middle of a frame, the image data switching time is synchronized with the detection of the specified time waiting for the next I frame.
- the present invention relates to a digital device that can provide the highest image quality without interrupting the image configuration from the request for switching the image data transmitted from the imaging transmission means to the I frame.
- An evening transmission controller is obtained.
- a data transmission control system for digital equipment controls data transmission to a network to which a data transmission device such as a plurality of imaging devices and a data reception device such as a plurality of monitoring devices are connected.
- a manager is connected to schedule data transmission between devices.
- the transmission effect is achieved by controlling data transmission by a manager according to the state of data or data transmission without individually inquiring the data transmission device from the data receiving device.
- a data transmission control system for digital equipment that can increase the transmission rate can be obtained.
- the data transmission control device of the digital device includes: When switching the device that sends data in response to a request from the device that receives the evening, switch the device that sends data from the controller.Set the specified time, and set the device that sends data in synchronization with that time. It is designed to be switched.
- the present invention provides a data transmission control device for a digital device that can accurately control the operation of a device that transmits data and a device that receives data in synchronization with a predetermined best timing. Is obtained.
- the amount of data to be transmitted is set to be smaller than the amount of data that can be transmitted.
- An idle time is provided before the transmission of the data group starts.
- the present invention provides a data transmission control method for a digital device, which can avoid truncation of transmission data when switching a data group to be transmitted in data transmission in which the amount of data to be transmitted is undefined. .
- An apparatus control device includes a clock processing unit that generates a current time corrected based on time information received from a system controller via a network; A time designation processing unit for setting a designated time received from the system controller, and a designated time detection processing unit for comparing the set designated time with a current time.
- a clock processing unit that generates a current time corrected based on time information received from a system controller via a network
- a time designation processing unit for setting a designated time received from the system controller, and a designated time detection processing unit for comparing the set designated time with a current time.
- a data transmission control device includes a clock processing unit that generates a current time corrected based on time information received from a system controller via a network; A transmission / reception processing unit for transmitting / receiving data and control signals; a time designation processing unit for setting a designated time received from a system controller via the network; And a designated time detection processing unit for comparing the time with the time.
- the transmission / reception processing unit sends out the transmission data from the device. This has the effect that the transmission line can be used with maximum efficiency without competing with the data transmission from another device to be transmitted next.
- a data transmission control device includes a clock processing unit that generates a current time corrected based on time information received from a system controller via a network, and a network.
- a transmission / reception processing unit for transmitting / receiving data and control signals to / from the control unit; a time specification processing unit for setting a specified time received from a system controller via the network;
- a specified time detection processing unit for comparing the specified time with the current time, and when the specified time is compared with the current time, a compressed image data of the I frame is transmitted.
- a clock processing unit that generates the current time, a transmission / reception processing unit that sends and receives data and control signals to and from the network, and receives data from the system controller via the network
- a time designation processing unit for setting the designated time
- a designated time detection processing unit for comparing the designated time with the current time, and comparing the designated time with the current time.
- the data to be received is switched when they match, and when a request from the monitoring means to switch the imaging transmission means, an I-frame is inserted without waiting for the next I-frame. This has the effect of providing the highest image quality without interrupting the composition of the image.
- the data transmission control system according to the present invention has an arbitrary number of claims.
- the data transmission control device described in claim 3 and the data transmission control device described in claim 4 are connected on a network, and the receiving side receives the I-frame image data in accordance with the timing of transmission.
- the switching of the compressed image data to be performed is performed.When the monitoring unit receives a request to switch the image transmission unit, the specified time for switching is waited until the next I-frame, and the switching is performed. It has the effect of providing the highest image quality without interrupting the configuration.
- the data transmission control system is used for switching a compressed image data received on a receiving device side when a device transmitting and receiving a plurality of compressed image data is connected on a network.
- a request to send the I-frame compressed image data is sent to the device that sends the new compressed image data to be received, and the I-frame compressed image data is sent to the receiving device in the shortest time. Evening is transmitted from the monitoring means to the imaging transmission means.
- the specified time for switching is waited until the next I-frame, so that the highest image quality can be provided without interrupting the image composition.
- a data transmission control system includes a manager connected to a network connecting a plurality of imaging transmission means and a plurality of monitoring means, wherein the plurality of imaging transmission means and a plurality of monitoring means are connected to each other.
- the data transmission to and from the monitoring means is scheduled by the manager, and the data receiving device does not need to individually inquire the data transmitting device. It has an effect that the transmission efficiency can be improved by scheduling data transmission by the manager according to the state of the data transmission or the data transmission.
- the transmission of the I-frame of the image data is thinned out, and the transmission of the I-frame is not performed. Instead, it has the effect of improving the image quality by sending out the P frame finely.
- a data transmission control device includes the data transmission control device according to claim 1, is connected between a data receiving device and a network, and detects a preset specified time. It is designed to switch between data relays, and accurately controls the operation of the device that transmits data and the device that receives data in synchronization with a predetermined best timing. It has the effect of being able to do this.
- the data transmission control method according to the present invention is applicable to compressed image data transmission.
- the amount of image data including I-frames is set to be smaller than the amount of data that can be communicated, and there is an idle time until the next data group arrives. This has the effect of avoiding truncation of the transmission data when switching the data group to be transmitted in data transmission in which the amount of data to be transmitted is indefinite.
- the data transmission control device is such that the information of the designated time is held in the device in advance, and has an effect that the designated time can be easily used.
- FIG. 1A is a block diagram illustrating a configuration of a data transmission control device according to Embodiment 1 of the present invention.
- FIG. 1B is a block diagram showing the configuration of the clock processing unit in FIG. 1A.
- FIG. 1C is a block diagram showing the configuration of the time designation processing unit in FIG. 1A.
- FIG. 1D is a block diagram showing the configuration of the designated time detection processing unit in FIG. 1A.
- FIG. 2 is a block diagram showing a configuration of a data transmission control apparatus according to Embodiment 2 of the present invention.
- FIG. 3 is a block diagram illustrating an entire imaging / monitoring system including the data transmission control device according to the third embodiment of the present invention.
- FIG. 4 is an explanatory diagram showing the operation of the data transmission control device according to the third embodiment.
- FIG. 5 is a block diagram showing a configuration of a data transmission control device according to Embodiment 3 of the present invention.
- FIG. 6 is a block diagram of the entire data transmission control system including the data transmission control device according to the fourth embodiment of the present invention.
- FIG. 7 is a timing chart showing the operation of the data transmission control system according to Embodiment 4.
- FIG. 8 is a block diagram showing a configuration of an entire data transmission control system constituting a data transmission control device according to Embodiment 5 of the present invention.
- FIG. 9 is an explanatory diagram showing a configuration of transmission data for describing a data transmission control method according to Embodiment 6 of the present invention.
- FIG. 10 is a block diagram showing the configuration of the packet transmission control means shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1A is a block diagram showing a configuration of the data transmission control device according to Embodiment 1 of the present invention.
- reference numeral 101 denotes a network for connecting to another digital device
- 102 denotes a transmission / reception processing unit for transmitting / receiving data to / from another digital device.
- 103 is corrected by the packet time indicating the reception time.
- Clock processing unit that generates the specified current time 104 is the time specification processing unit that sets the specified time received, and 105 is the current time and time from the clock processing unit 103.
- a designated time detection processing unit that compares a designated time from the designated processing unit 104 and outputs a designated time detection signal when they match with each other, and a 106 whose operation is controlled in response to the designated time detection signal.
- Reference numeral 107 denotes a system controller that controls the entire device connected to the network 101. Examples of digital devices whose operation is controlled include, for example, digital cameras. That is, when there is a digital camera whose shading is to be cut off at a desired time, control at a desired time can be performed according to the present invention.
- the designated time is received from the system controller 107 via the transmission / reception processing unit 102, and is set in the time designation processing unit 104.
- the clock processing unit 103 receives the bucket indicating the time via the transmission / reception processing unit 102 at predetermined time intervals, and detects the current time corrected based on the time at the specified time.
- the designated time detection processing unit 105 receives the current time, receives the designated time from the time designation processing unit 104, compares both times, and outputs the designated time detection signal when they match.
- Output to digital device 106 The operation of the digital device 106 is controlled by receiving the designated time detection signal.
- FIG. 1B shows a detailed configuration of the clock processing unit 103, and the operation will be described.
- reference numeral 20 denotes a clock generating means for generating a pulse of 24.576 MHz.
- 2 1 counts the number of input pulses, and 3 0 7 counts 2 pulses to increase the carry.
- T 7
- this packet 24 interprets the bucket indicating the time given from the transmission / reception processing unit 102 and corrects each of the count values 21 to 23 based on the information included in the packet. This is a time correction means for generating a correction signal. It is assumed that this packet is transmitted from the system controller 107 in FIG. 1A or another device (not shown) connected to the network 101. In the packet indicating the time, the count values of counts 21 to 23 are described in accordance with a predetermined format, and the time correction means 24 counts the count values. By writing to 23, the current time information output from the clock processing unit 103 is added to the time indicated by the packet. Correct by matching.
- the time of one cycle of 24.576 MHz is used as the current time information as a unit.
- Time information A, time information B in units of 125 seconds, and time information C in units of 1 second are output.
- the count value of power input 21 to count 23 is corrected by the time correction means 24 every time a packet indicating the time is given from the transmission / reception processing unit 102.
- the information on the current time is corrected to match the time indicated in the packet.
- the packet is transmitted at, for example, a period of 125 seconds
- the current time is
- FIG. 1C shows a detailed configuration of the time designation processing unit 104, and the operation will be described.
- reference numeral 34 denotes a packet interpreting the packet indicating the designated time given from the transmission / reception processing unit 102, and from the information included in the packet, the values of the registers 31 to 33 are obtained.
- the specified time to be set is the holding control means.
- 31 is a 12-bit register that outputs its value as specified time information Ad.
- Reference numeral 32 denotes a 13-bit register that outputs the held value as designated time information Bd.
- 33 is a 32-bit register that takes a value represented by 32 bits, and outputs the held value as designated time information Cd.
- the designated time information A d to C d correspond to the time information A to C described in FIG. 1B, and the designated time information A d is 1 in 24.576 MHz. Take a value from 0 to 3 0 7 1 in units of the cycle time
- the designated time information B d takes a value from 0 to 79,99 in units of 125 ms, and the designated time information C d takes a 32 bit value in units of seconds. Take.
- the designated time is represented by the following equation. Specified time 2 Specified time information A dx (24.56 76 MHz one cycle time) + Specified time information B d X (1 25 seconds) + Specified time information C d
- FIG. 1D shows a detailed configuration of the designated time detection processing unit 105, and the operation will be described.
- reference numeral 41 denotes a 12-bit comparator, which compares the time information A described in FIG. 1B with the designated time information Ad described in FIG. 1C, and outputs a comparison result Ac.
- 42 is a 13-bit comparator that compares the time information B described in FIG. 1B with the specified time information Bd described in FIG. 1C and outputs a comparison result Be.
- 43 is a 32-bit comparator that compares the time information C described in FIG. 1B with the specified time information Cd described in FIG. 1C and outputs a comparison result Cc.
- Reference numeral 4 denotes a logical operation unit, which detects that the current time has passed the specified time based on the logic of the comparison results A c to C c and notifies the device 106.
- the logical operation unit 44 detects that the specified time has passed when any of the following conditions is satisfied.
- Condition 1 (Time information C> Specified time information C d)
- bucket indicating the time which is provided from the transmission / reception processing unit 102 to the clock processing unit 103.
- packet A There are two types of packets that indicate the time, packet A and packet B, as shown below.
- packet A clock processing is performed from the transmission / reception unit 102 at least every 125 seconds.
- Bucket B is transmitted less frequently than bucket A, such as during device initialization.
- packet A corresponds to, for example, a cycle evening packet in the IEEE1394 standard. Time information contained in bucket A
- the data transmission control device does not use the instruction bucket for the instruction of the operation of the digital device, but performs the operation at the predetermined timing.
- a digital device data transmission control device that can accurately control the operation of the digital device can be obtained.
- the designated time may be stored in the time designation processing unit 104 in advance.
- FIG. 2 is a block diagram illustrating a configuration of a data transmission control device according to the second embodiment of the present invention.
- 105 is the designated time at which the current time and the designated time that specifies the transmission stop time of the transmission data from the device 106 are received, compared, and the designated time detection signal is output when they match.
- the detection processing unit 106 is a digital device that outputs transmission data to the transmission / reception processing unit 102 irrespective of generation of the designated time detection signal.
- the other components having the same reference numerals as those of the components shown in FIG. 1 are the same, and therefore description thereof is omitted.
- the designated time is received from the system controller 107 via the transmission / reception processing unit 102, and is set in the time designation processing unit 104.
- the designated time in the second embodiment designates the transmission stop time of the transmission data
- the designated time detection processing unit 105 receives the designated time and the current time from the clock processing unit 103. Outputs the specified time detection signal when they match with each other.
- the transmission / reception processing unit 102 receives the designated time detection signal, and stops transmission of data from the currently transmitted device 106.
- the data transmission control device is configured to stop transmission from a digital device at a specified time.
- a data transmission control device of a digital device that can use a transmission line with maximum efficiency without competing for transmission from another device to be transmitted next is obtained.
- FIG. 3 is a block diagram illustrating the entire imaging / monitoring system including the data transmission control device according to the third embodiment of the present invention.
- FIG. 4 is a block diagram illustrating the data transmission control according to the third embodiment.
- FIG. 5 is an explanatory diagram showing the operation of the device, and
- FIG. 5 is a block diagram showing the configuration of the data transmission control device according to the third embodiment of the present invention.
- reference numerals 12A to 12M denote imaging / transmission means composed of, for example, a digital camera
- 11A to 11N denote monitoring means composed of, for example, a monitor.
- reference numeral 101 denotes a network for connecting a plurality of monitoring means and imaging means as shown in FIG. 3, for example, and transmitting image data between the devices.
- Transmission / reception processing unit that transmits / receives image data and control data to / from external devices
- 103 is a clock processing unit that sets the current time of reception
- 104 is a time specification that sets the specified time of reception Processing unit
- 105 specifies that the current time from clock processing unit 103 is compared with the specified time from time specification processing unit 104, and outputs a specified time detection signal when they match. It is a time detection processing unit.
- 108 is a photographing means for photographing an object consisting of a camera or the like
- 109 is a means for receiving and compressing image data from the photographing means 108 and outputting it to the transmission / reception processing unit 102, and also designated.
- Compressing means capable of receiving a specified time detection signal from the time detection processing section 105 and outputting compressed image data of an I frame.
- 107 is a device connected to the network 101. This is the system controller to be controlled.
- the transmission / reception processing unit 102, clock processing unit 103, time specification processing unit 1 04, the designated time detection processing section 105, the photographing means 108 and the compression means 109 constitute, for example, the imaging means (also a data transmission control device) 12A to 12M shown in FIG. .
- 1 and 2 transmit and receive image data and control data to and from other digital devices, and are specified in response to a request from the monitor to switch the transmitting digital device.
- the channel is switched to the digital device that requested the switch.
- the transmission / reception processing unit, 113 is the clock processing unit that sets the current reception time, and 114 is the clock that sets the received specified time. This is the time specification processing unit that performs the processing.
- 1 15 specifies that the current time from the clock processing section 113 is compared with the specified time from the time specification processing section 114, and a specified time detection signal is output when they match.
- the time detection processing unit, 116 is a decompression means for decompressing the received compressed image data and displaying it on the screen
- 117 is a display means for displaying the decompressed image data on the screen etc. .
- the transmission / reception processing unit 112, clock processing unit 113, time designation processing unit 114, designated time detection processing unit 115, decompression means 116, and display means 117 are, for example,
- the monitoring means (also a data transmission control device) shown in Fig. 3 comprises 11A to 11N.
- the system controller 107 processes time information for transmitting I-frames to the monitoring means 11A to 11N and the imaging transmission means 12A to l2M in the respective time designation processing.
- the system controller 107 processes time information for transmitting I-frames to the monitoring means 11A to 11N and the imaging transmission means 12A to l2M in the respective time designation processing.
- the time designation processing section 114 sets in the section 104 and the time designation processing section 114.
- the time specification processing unit 104 includes the system controller 1 From 07, the time at which the I-frame should be transmitted is given through the transmission / reception processing unit 102, and this time is given to the designated time detection processing unit 105.
- the clock processing unit 103 gives the current time corrected by the time of the bucket indicating the time received through the transmission / reception means to the designated time detection processing unit 105.
- the designated time detection processing unit 105 compares the current time given from the clock processing unit 103 with the designated time given from the time designation processing unit 104, and when both times match, the designated time The detection signal is given to the compression means 106.
- time information given from the time designation processing unit 104 to the designated time detection processing unit 105 is not limited to a certain time (for example, T 1), but may be based on logic or the like (for example, time from time T 2). T3, etc.) Time may be given.
- the compression unit 109 performs a compression process of transmitting an I frame to the image data supplied from the imaging unit 108 in synchronization with the timing given by the designated time detection signal.
- the compressed image data is transmitted to the network 101 via the transmission / reception means 102.
- the compressed image data synchronized with the I frame is transmitted from the imaging transmission means 12A to 12M over the network.
- the time designation processing section 114 is given the time at which the I-frame is transmitted from the system controller 107 through the transmission / reception processing section 112, and specifies this time. This is given to the time detection processing section 1 15.
- the clock processing unit 113 gives the current time corrected by the time of the bucket indicating the time received through the transmission / reception means to the designated time detection processing unit 115.
- the designated time detection processing unit 1 The current time supplied from the clock processing unit 113 is compared with the specified time supplied from the time specification processing unit 114, and when both times match, a specified time detection signal is transmitted to the transmitting / receiving means 113. give.
- the time information given from the time designation processing unit 114 to the designated time detection processing unit 115 may include not only one time but also a time by logic or the like.
- the transmission / reception means 112 is given a timing at which the I frame is transmitted for the compressed image data transmitted on the network 101.
- the transmission / reception processing unit 112 receives the compressed image data transmitted from any one of the image capturing and transmitting means out of the compressed image data transmitted on the network 101, and Give to 1 1 6
- Decompression means 116 decompresses the given compressed image data and supplies it to display means 117, and display means 117 displays the decompressed image data.
- the transmission / reception processing unit 112 receives the compressed image data received at the time when the I frame is transmitted. Switch. Therefore, when the received compressed image data is switched, the I frame can be received immediately.
- the data transmission control device is configured as described above, and receives the image data from the imaging transmission means (eg, 12A in FIG. 4) during transmission. Is stopped, and switching to reception of image data from other imaging transmission means (for example, 12C in Fig. 4) is performed, even if the switching request occurs in the middle of the I-frame. Wait until the next I-frame for data switching (indicated by 1 in Fig. 4). In this case, the data transmission control device of the digital device can be obtained without interruption of the image structure from the request for switching image data to the I-frame. .
- the data transmission control device if a request to switch the imaging means occurs in the middle of the I-frame, switching is performed after waiting for the next I-frame.
- the I-frame may be sent immediately after the request to synchronize with it.
- the designated time may be set to the time immediately after, and the compression means 109 of the imaging transmission means 12C on the switching side may transmit the I frame when the designated time is detected.
- the monitoring means 11 B on the switching request side may switch the receiving channel in synchronization with the transmission of the I-frame, as described above.
- the switching method is as follows: First, the I-frame is transmitted from the transmission / reception processing unit 112 of the monitoring unit 111B on the switching request side to the imaging transmission unit 122C as soon as possible. Make a request to do so. Next, upon receiving the request, the transmission / reception processing unit 102 of the imaging transmission means 12C issues an I-frame transmission command to the compression means 109 so as to immediately transmit the I-frame. The I-frame compressed image data generated by the compression means 109 is transmitted over the network 101. The monitoring means 11 B can compose the image data from the compressed image data of the I frame transmitted in this way, and can display the image with a minimum waiting time after the switching request. Becomes
- FIG. 6 is a block diagram illustrating the entire data transmission control system including the data transmission control device according to the fourth embodiment of the present invention
- FIG. 7 is a block diagram illustrating the data transmission control system according to the fourth embodiment. It is a timing diagram showing the operation o
- 12 A to 12 M are imaging transmission means composed of, for example, a digital camera
- 11 A to 11 N are monitoring means composed of, for example, a monitor
- 13 is, for example, FIG. A manager that corresponds to the system controller 107 shown in Fig. 2 and Fig. 5 and controls the scheduling of data transmission between the monitoring means 11A to 11N and the imaging transmission means 12A to 12M. .
- the manager 13 performs scheduling for controlling data transmission from the imaging transmission means 12A to 12M to the monitoring means 11A to 11N. For example, the manager 13 responds to all inquiries and data transmission requests from the monitoring means 11A to 11N to the imaging transmission means 12A to 12M, and the manager 13 responds to the monitoring means 11A to 11M. Scheduling is performed in response to a request for overnight transmission from 1IN, and imaging transmission means 12A to 12M and time are allocated. As shown in FIG. 7, for example, as shown in FIG. 7, when the monitoring means 11A and 11N request the image transmission from the imaging transmission means 12B, the distribution is controlled to be performed in an appropriate time zone.
- the frequency of sending I frames to the imaging transmission means 12 A to 12 M is reduced to reduce the interval between I frames.
- the data transmission control system connects a plurality of imaging transmission means 12A to 12M to a plurality of monitoring means 11A to 1IN.
- Monitoring means by connecting a manager that controls data transmission to the connected network to schedule data transmission between devices.
- the data transmission is controlled by the manager 13 according to the status of the data transmission without inquiring the imaging transmission means 12A to 12M individually from N.
- a data transmission control system for digital devices that can further improve transmission efficiency can be obtained.
- FIG. 8 is a block diagram showing the configuration of the entire data transmission control system constituting the data transmission control device according to the fifth embodiment of the present invention
- FIG. 10 shows the configuration of the packet transmission control means shown in FIG. It is a block diagram.
- reference numeral 15 denotes a data for controlling the switching of the source of the received data from the device 17A to 17B or from the device 17B to 17A at the request of the device 16.
- Packet transmission controller as an overnight transmission controller
- the column 16 is a device that requests data from the device 17B or 17A, and 17A and 17B are devices that generate and transmit data.
- reference numeral 121 denotes transmission / reception means for processing a connection request from the device 16 and transmission / reception of data
- reference numeral 122 denotes, for example, as shown in 178 and 17B of FIG.
- 123 is a clock processing unit that sets the current time of reception
- 124 is a time specification process that sets the specified time of reception , The specified time is detected by the control means, when the current time from the clock processing unit is compared with the specified time from the time specification processing unit.
- Specified time detection processing section that outputs signals, 1 26 sets the specified time from controller 127 to time specification processing section 124, and detects specified time from specified time detection processing section 125
- Control means that outputs a switch command to transmission / reception means 1 2 1 and 1 2 2 when a signal is received. It is a set system Gosuru controller a.
- FIG. 8 it is assumed that the device 16 is now receiving the data from the device 17A via the backbone of the network and the packet transmission control means 15. In such a state, it is assumed that a request has been generated to switch the data received by the device 16 from the device 17B. The switching operation is performed in the packet transmission control means 15.
- the controller 127 receiving the device switching request outputs the designated time for device switching.
- the designated time is set in the time designation processing section 124 via the transmission / reception means 122 and the control means 126.
- the lock processing unit 123 generates the current time corrected by the time of the packet indicating the time via the transmission / reception means 122 and the control means 122, and generates the designated time detection processing part 121. Output to 2 5.
- the designated time detection processing unit 125 receives the current time, receives the designated time from the time designation processing unit 124, compares the two times, and outputs a designated time detection signal when they match. Output to 1 2 6.
- the control means 126 outputs a switch command to the transmission / reception means 122 based on the designated time detection signal, and switches the reception from the device 17A to the reception from the device 17B.
- the received data is output to the local bus through the transmission / reception means 122.
- the data transmission control system sets a designated time for switching the data transmission device from an external controller in advance and synchronizes with the time.
- the data is transferred from the digital device that can accurately control the operation of the data transmission device and the data reception device in synchronization with the best timing determined in advance.
- a transmission controller is obtained.
- FIG. 9 is an explanatory diagram showing a configuration of transmission data for describing a data transmission control method according to Embodiment 6 of the present invention.
- the conventional data transmission method is such that when the transmission of the data group following an I frame ends, the transmission of the I frame of the next data group starts. I have.
- the data transmission time Rather than designating the end of data transmission, for example, by controlling the amount of data to be transmitted by the system controller, etc., after the transmission of the data group following the I frame is completed, An idle time is provided until the transmission of the I-frame in the next data group starts, so that there is room for an increase in the amount of data during that time.
- the data transmission control method according to the sixth embodiment is configured as described above, so that the amount of data to be transmitted is adjusted to be smaller than the amount of data that can be transmitted, and data group transmission is performed. By transmitting data in the shortest time and providing an idle time before the start of transmission of the next data group, it is possible to avoid truncation of transmitted data when switching the data group to be transmitted. A data transmission control method for digital equipment is obtained. Industrial applicability
- the present invention is configured as described above, and in particular, sets a designated time for operating the device from the outside in advance, provides means for detecting the designated time, and activates the device when the designated time is detected. Therefore, the digital device can accurately control the operation of the digital device at a predetermined timing without using the instruction packet for the operation of the digital device.
- the data transmission control device is obtained.
- a designated time that specifies a data transmission end time is set in advance, a means for detecting the designated time is provided, and the data is detected when the time is detected. Because the transmission is stopped overnight, other transmission A data transmission control device for digital equipment that can use the transmission path with maximum efficiency without competing for data transmission from equipment can be obtained.
- a designated time specifying the switching time of the imaging transmission unit is set in advance in response to the switching request of the imaging transmission unit, and the designated time is detected.
- the monitoring means issues a request to immediately transmit an I-frame to the imaging transmission means.
- Image data can be composed immediately from the compressed image data of the I-frame sent by the I-frame, and the image data can be displayed in a minimum queue time after the switching request. A transmission control device is obtained overnight.
- the present invention particularly connects a manager that controls data transmission to a network to which a device that transmits data such as a plurality of imaging transmission units and a device that receives data such as a plurality of monitoring units are connected, Scheduling of data transmission between devices allows the data receiving device to respond to the data or data transmission status without inquiring the partner data transmitting device individually.
- a data transmission control system for digital devices that can improve transmission efficiency by controlling data transmission by 30 managers is obtained.
- a designated time is set in advance from a controller, By switching the data to be transmitted synchronously at that time, it is possible to transmit only the data to each other as necessary in synchronization with the predetermined best timing.
- a data transmission control device for digital equipment that can be used is obtained.
- the transmission of one data group is transmitted in the shortest time, and the idle time until the start of transmission of the next data group is set.
- the data transmission of digital equipment that can avoid truncation of the transmission data when switching the data group to be transmitted in the data transmission where the amount of data to be transmitted is uncertain by setting A control method is obtained.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Marketing (AREA)
- Business, Economics & Management (AREA)
- Computer Security & Cryptography (AREA)
- Closed-Circuit Television Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Small-Scale Networks (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Facsimiles In General (AREA)
- Computer And Data Communications (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU51950/99A AU764785B2 (en) | 1998-08-07 | 1999-08-06 | Apparatus controller, device and method for controlling data transmission of digital apparatus, and data transmission control system |
EP99936996A EP1102438A4 (en) | 1998-08-07 | 1999-08-06 | APPARATUS CONTROL DEVICE, DEVICE AND METHOD FOR CONTROLLING DATA TRANSMISSION OF DIGITAL APPARATUS, AND DATA TRANSMISSION CONTROL SYSTEM |
CA 2339811 CA2339811C (en) | 1998-08-07 | 1999-08-06 | Apparatus controller, device and method for controlling data transmission of digital apparatus, and data transmission control system |
US09/762,387 US7136106B1 (en) | 1998-08-07 | 1999-08-06 | Apparatus controller, device and method for controlling data transmission of digital apparatus, and data transmission control system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10/234886 | 1998-08-07 | ||
JP23488698A JP4021998B2 (ja) | 1998-08-07 | 1998-08-07 | データ伝送制御システム及びデータ伝送制御方法 |
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WO2000008809A1 true WO2000008809A1 (en) | 2000-02-17 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP1999/004271 WO2000008809A1 (en) | 1998-08-07 | 1999-08-06 | Apparatus controller, device and method for controlling data transmission of digital apparatus, and data transmission control system |
Country Status (8)
Country | Link |
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US (1) | US7136106B1 (ja) |
EP (1) | EP1102438A4 (ja) |
JP (1) | JP4021998B2 (ja) |
CN (2) | CN100539691C (ja) |
AU (1) | AU764785B2 (ja) |
CA (1) | CA2339811C (ja) |
TW (1) | TW425823B (ja) |
WO (1) | WO2000008809A1 (ja) |
Families Citing this family (9)
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FR2848766B1 (fr) * | 2002-12-13 | 2005-03-11 | Thales Sa | Procede de commutation de signaux numeriques avant emission, commutateur et signal resultant |
US7421727B2 (en) * | 2003-02-14 | 2008-09-02 | Canon Kabushiki Kaisha | Motion detecting system, motion detecting method, motion detecting apparatus, and program for implementing the method |
JP3800207B2 (ja) * | 2003-07-18 | 2006-07-26 | ソニー株式会社 | 撮像装置 |
JP3731589B2 (ja) * | 2003-07-18 | 2006-01-05 | ソニー株式会社 | 撮像装置と同期信号発生装置 |
US20070200949A1 (en) * | 2006-02-21 | 2007-08-30 | Qualcomm Incorporated | Rapid tuning in multimedia applications |
CN102057311B (zh) | 2009-04-06 | 2014-05-28 | 松下电器产业株式会社 | 光学系统以及摄像装置 |
JP6029433B2 (ja) | 2012-11-26 | 2016-11-24 | ルネサスエレクトロニクス株式会社 | マイコン |
DE102014220372A1 (de) * | 2014-10-08 | 2016-04-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und verfahren zum schneiden von mehreren kodierten videoströmen ohne vorherige dekodierung |
WO2017163069A1 (en) * | 2016-03-22 | 2017-09-28 | Novus4 Limited | A method and system for controlling data transmission |
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Also Published As
Publication number | Publication date |
---|---|
AU764785B2 (en) | 2003-08-28 |
TW425823B (en) | 2001-03-11 |
JP2000059406A (ja) | 2000-02-25 |
CN1134939C (zh) | 2004-01-14 |
CN1516474A (zh) | 2004-07-28 |
JP4021998B2 (ja) | 2007-12-12 |
EP1102438A4 (en) | 2005-11-16 |
CN1315098A (zh) | 2001-09-26 |
CA2339811C (en) | 2009-05-12 |
CA2339811A1 (en) | 2000-02-17 |
AU5195099A (en) | 2000-02-28 |
US7136106B1 (en) | 2006-11-14 |
EP1102438A1 (en) | 2001-05-23 |
CN100539691C (zh) | 2009-09-09 |
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