JP2008153826A - Device identifier setting method and wireless transmission device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wireless transmission system comprising a plurality of wireless transmission devices having wireless transmitting means and wire transmitting means, wherein wire device identifiers used by the wire transmitting means can be allocated without repetition. <P>SOLUTION: The wireless transmission device has a wire device identifier generating means of acquiring a wireless device identifier for identifying each wireless transmission device used in the wireless transmission system from a managing device through a wireless transmitting means and generating a wire device identifier used for wired data transmission and reception from the uniquely allocated wireless device identifier. The wire device identifier generating means divides wire device identifiers into a plurality of groups and uses the respective wire device identifiers as portions of a wire device identifier to generate the wire device identifier. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a device identifier setting method capable of automatically performing device identifier setting processing of a wireless transmission device in a system for transmitting video and audio data between a plurality of wireless transmission devices, and a wireless transmission device using the device identifier setting method It is about.

  As a system for transmitting video and audio data between a plurality of transmission apparatuses, a system that adopts a High-Definition Multimedia Interface (HDMI) standard is widely used (see Non-Patent Document 1). In the HDMI standard, a physical address is used for each transmission apparatus to recognize the system topology. The physical address in the HDMI standard is composed of four blocks, with 4 bits (0 to F in hexadecimal notation) as one block. That is, the physical address is represented by 16 bits and takes a value from “0.0.0.0” to “FFFF”. For example, “0.0.0.0” is assigned as a physical address to a device serving as a root of the topology. Further, when the root device has a plurality of HDMI input terminals, the HDMI is stored in a storage area called EDID (Extended Display Identification Data) that stores video format information and the like supported by the root device and supported by the root device. Stores the physical address assigned to the transmission device connected to the terminal. This physical address is generated from the physical address of the root device and the HDMI terminal number.

  FIG. 13 shows a physical address assignment method in the HDMI standard.

  As shown in FIG. 13, 0.0.0.0 is assigned as a physical address to the TV that is the root of the topology. As shown in FIG. 13, if a TV has two HDMI terminals, and numbers 1 and 2 are assigned, respectively, the EDID associated with the HDMI terminal (terminal 1) with the number 1 includes “1.0.0.0” is stored, and the physical address “1.0.0.0” is assigned to the device connected to the terminal 1. Further, “2.0.0.0” is stored in the EDID associated with the HDMI terminal (terminal 2) with the number 2 and the physical address “2.0.0.0” is stored in the device connected to the terminal 2. 0.0 "is assigned.

  As shown in FIG. 13, when the device connected to the HDMI terminal 1 of the TV is an AV amplifier, a physical address “1.0.0.0” is assigned to the AV amplifier. Further, when a DVD or the like is connected to the HDMI terminal of the AV amplifier, for example, when a DVD is connected to the HDMI terminal 2 of the AV amplifier, the physical address “1.2. 0.0 "is stored. That is, the physical address “1.2.0.0” is assigned to the DVD connected to the HDMI terminal 2 of the AV amplifier. Thus, the HDMI has a tree structure with the TV as the root, and physical addresses are assigned hierarchically up to five levels.

Patent Document 1 describes a method for identifying a device using a physical address in order to switch the input of a device. In this method, the vendor ID, device address, and physical address of the display device are acquired from the device connected to the display device and stored in the memory unit. When the display device receives the remote control code from the remote control device, it extracts the manufacturer code and device code, searches the memory unit for the corresponding vendor ID and device address, and associates them with the searched vendor ID and device address. The input can be switched to the device connected to the physical address.
Japanese Patent Laying-Open No. 2004-208290 (page 21, FIG. 17) High-Definition Multimedia Interface Specification, Version1.1, HDMI Licensing, LLC, California in USA, May 20,2004

  However, in a system using radio, since the topology is not a tree structure, there is a problem that a physical address cannot be assigned in the same manner. For example, if there are two TVs in the system, that is, if there are two topology routes, the physical addresses assigned to the devices in the system may be different from each TV. As with the previous system, physical addresses cannot be uniquely assigned within the system. Therefore, there has been a problem that input switching cannot be performed using a physical address.

  The present invention solves the above-described conventional problems, and an object of the present invention is to assign physical addresses without duplication even in a wireless system.

  In order to solve the above-described conventional problems, a wireless transmission method according to a first aspect of the present invention is an identifier generation method for a wireless transmission device including a wired interface and a wireless interface, and a device used for identifying the device in a wireless network. A device identifier used for identifying a device in a wired network is generated from the identifier.

  Furthermore, the wireless device identifier is divided into a plurality of bit strings and used as a part of the wired device identifier.

  Furthermore, the wireless device identifier is divided into a plurality of bit strings, and a bit string obtained by inverting 1 and 0 of the divided bit string is used as a part of the wired device identifier.

  Still further, a millimeter wave is used as the wireless interface.

  Still further, HDMI is used as the wired interface.

  Still further, the generated identifier is a physical address used in HDMI.

  Still further, the wireless device identifier is divided into two bit strings each having a half bit length, and each bit string is included in one or a plurality of fields out of four fields composed of 4 bits of a physical address. And

  Furthermore, the device identifier 6 bits in the radio is divided into two bit strings having a length of 3 bits, and each bit string is set in the lower 3 bits of two of the four fields composed of 4 bits of the physical address, The radio transmission apparatus according to claim 6, wherein the most significant bit of the two fields is 1.

  With this configuration, even when wired and wireless are mixed between devices in the system, physical addresses can be assigned without duplication.

  According to the wireless transmission method and apparatus of the present invention, physical addresses can be assigned to each apparatus without duplication, and when a message including a physical address is received, the apparatus can be identified and connected by wire. As with the time, operations such as input switching can be performed, and the convenience of the user can be improved.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1 is a block diagram of a radio transmission system according to Embodiment 1 of the present invention. The wireless transmission system includes wireless transmission devices 100, 101, and 102 and transmission devices 103, 104, and 105. In this embodiment, the case of three wireless transmission devices and three transmission devices will be described. However, the present invention has the same configuration as the wireless transmission devices 100, 101, 102, and the transmission devices 103, 104, 105. The present invention can also be applied to a case where a plurality of wireless transmission devices and transmission devices having the above are provided.

  The wireless transmission device 100 is a wireless transmission device that includes a wireless interface and receives video data and audio data from the wireless interface.

  The wireless transmission device 101 and the wireless transmission device 102 include a wired interface and a wireless interface, and are wireless transmission devices that transmit video data and audio data received via the wired interface from the wireless interface. Send data. Transmission of video and audio data from the wireless transmission device 101 and the wireless transmission device 102 to the wireless transmission device 100 is performed using different radio frequency bands or at different times.

  The transmission device 103, the transmission device 104, and the transmission device 105 are transmission devices that have a wired interface and transmit video data and audio data from the wired interface. The transmission device 103 and the transmission device 104 have a wireless transmission device 101 and a wired interface. The transmission apparatus 105 is connected to the wireless transmission apparatus 102 via a wired interface. For example, HDMI is used as a wired interface.

  FIG. 2 is a block diagram showing configurations of radio transmission apparatus 101 and radio transmission apparatus 102 in Embodiment 1 of the present invention.

  In FIG. 2, a wireless transmission means 201 is a means for performing wireless transmission processing such as transmission / reception of radio waves and modulation / demodulation, and includes an antenna, a high frequency circuit, a baseband processing circuit, etc., but any wireless transmission method may be used. In the present embodiment, the description is omitted. For example, in order to transmit data requiring a high data rate such as uncompressed video, it is conceivable to use a wireless transmission method using millimeter wave radio waves. The wireless transmission unit 201 also reserves a wireless frequency band or transmission time in wireless transmission, and performs access control for transmitting and receiving video / audio data within the reserved wireless frequency band or time.

  The data processing unit 202 performs processing in video data and audio data conversion processing and higher layer processing, and the wired device identifier generation unit 203 generates a wired device identifier used when data transmission is performed using the wired transmission unit. The data processing unit 202 and the wired device identifier generation unit 203 may be realized by software or hardware (dedicated circuit). When realized by software, it is recorded on a recording medium such as a ROM.

  The wired device identifier storage unit 205 stores the wired device identifier generated by the wired device identifier generation unit 205. The wired device identifier storage unit 205 is preferably a non-volatile recording medium, but can also be realized by a volatile recording medium.

  The wired transmission means 204 is means for performing wired transmission processing such as encoding, decoding, and multiplexing of video signals, audio signals, and control signals. As the wired transmission unit 204, for example, HDMI is used.

  The wireless transmission devices 101 and 102 include a conversion adapter that performs mutual conversion between wired transmission and wireless transmission, an amplifier having a wireless function, and the like.

  FIG. 3 is a block diagram showing a configuration of radio transmission apparatus 100 according to Embodiment 1 of the present invention.

  The wireless transmission unit 301 is a unit that performs wireless transmission processing such as transmission / reception of radio waves and modulation / demodulation, and includes an antenna, a high-frequency circuit, a baseband processing circuit, and the like, but any wireless transmission method may be used. Then, explanation is omitted. For example, in order to transmit data requiring a high data rate such as uncompressed video, it is conceivable to use a wireless transmission method using millimeter wave radio waves. The wireless transmission unit 301 reserves a wireless frequency band or transmission time in wireless transmission, and performs medium access control for transmitting and receiving video / audio data within the reserved wireless frequency band or time.

  The data processing unit 302 is a unit that performs conversion processing of video data and audio data and processing in an upper layer, the video display unit 303 is a unit that displays video, and the audio output unit 304 is a unit that outputs audio.

  The wireless transmission device 100 is a device capable of outputting images and sounds, such as a TV or personal computer having a wireless function. The wireless transmission device 100 may be a device having only one of the video display means and the voice display means, or may be a monitor or projector having only a video display function, a speaker having only a voice output function, or the like.

  The data processing unit 302, the video display unit 303, and the audio output unit 304 may be realized by software or hardware (dedicated circuit). When realized by software, it is recorded on a recording medium such as a ROM.

  FIG. 4 is a block diagram showing configurations of transmission apparatus 103, transmission apparatus 104, and transmission apparatus 105 in Embodiment 1 of the present invention.

  The wired transmission unit 401 is a unit that performs a wired transmission process, and the data processing unit 402 is a unit that performs conversion processing of video data and audio data and processing in an upper layer. The wired transmission unit 401 performs processing such as encoding, decoding, and multiplexing of video signals, audio signals, and control signals. For example, HDMI is used as the wired transmission unit 401.

  The wired device identifier storage means 403 is a means for storing the wired device identifier assigned to itself. The wired device identifier storage unit 403 is preferably a non-volatile recording medium, but can also be realized by a volatile recording medium.

  The video / audio reproduction means 404 is a means for outputting video data and audio data. Note that the video / audio reproduction unit 404 may be a unit that reproduces only video or audio.

  The data processing unit 402 and the video / audio reproduction unit 404 may be realized by software or hardware (dedicated circuit). When realized by software, it is recorded on a recording medium such as a ROM.

  The transmission device 103, the transmission device 104, and the transmission device 105 are devices capable of outputting images and sounds such as DVDs, STBs, and video players, and are CD players, MD players, and MP3 (MPEG1 Layer-3 Audio) that reproduce only sound. It may be a player or the like.

  Hereinafter, the operation according to the first embodiment of the present invention will be described with reference to FIGS.

  FIG. 5 is a chart showing an example of a wireless device identifier acquisition sequence of the wireless transmission unit 201 of the wireless transmission device 101 and the wireless transmission device 102 according to the present invention.

  As shown in FIG. 5, when joining the wireless network, the wireless transmission device 101 transmits an authentication request message to the management device (not shown) via the wireless transmission means 201 (step S501). The management device is a device that manages joining and leaving of wireless transmission devices in the entire wireless network. When receiving the authentication request message, the management device transmits an authentication response message including a wireless device identifier used in the wireless network to the wireless transmission device 101 that is the transmission source of the authentication request message (S502). Here, the management device manages the usage status of the wireless device identifier, and assigns each wireless transmission device so that the wireless device identifier takes a unique value in the wireless network.

  When the wireless transmission device 101 receives the authentication response message from the management device via the wireless transmission unit 201, the wireless transmission device 101 uses the wireless device identifier included in the authentication response message as its own wireless device identifier. The wireless transmission device 101 stores the wireless device identifier in a storage unit (not shown) in the wireless transmission unit. Similarly, the wireless transmission device 100 acquires a wireless device identifier. The radio transmission apparatuses 100, 101, and 102 store radio apparatus identifiers of all radio transmission apparatuses existing in the system, for example, in a list format (not shown).

  FIG. 6 is a flowchart showing an example of a wired device identifier generation procedure in the wired device identifier generation means 203 of the wireless transmission device 101 according to the present invention.

  When the wireless device identifier generation unit 203 detects a wireless device identifier acquisition notification from the data acquired via the wireless transmission unit 201 and the data processing unit 202 (step S601), the wired device identifier generation unit 203 performs a wired connection from the wireless device identifier included in the wireless device identifier acquisition notification. A device identifier is generated (step S602). Here, as an example, a case where the wireless device identifier is a 6-bit value (0 to 31 in decimal) and the wired device identifier is a physical address used in HDMI is shown in FIGS. I will explain. Note that “0b” is added to the head of the binary notation.

  FIG. 7 is a flowchart showing a procedure for generating a wired device identifier, and FIG. 8 is a diagram showing an example of generating a wired device identifier.

  First, the wired device identifier generation unit 203 divides the 6 bits of the wireless device identifier into two groups of 3 bits (step S701). For example, when the wireless device identifier is 10, as shown in FIG. 8 (a), when 10 is represented by binary 6 bits, it becomes 0b001010. When this is divided into 2 groups of 3 bits, 1 group The eye is 0b001, and the second group is 0b010.

  The physical address of HDMI is divided into 4 groups of 4 bits (ABCD), and each of A to D takes a value from 0 to 15 in decimal number. As shown in (b) and (c) of FIG. 8, first, in order not to set the first 4 bits (A) to 0 at the top of the most significant bit, the wireless device identifier is divided into two groups at 0b1. The value 0b001 of the first group obtained in this way is 0b1001 (9 in hexadecimal) (step S702), and the next 4 bits (B) are divided into two groups at 0b1 and the wireless device identifier is divided into two groups. The value 0b010 of the second group obtained in this way is set to 0b1010 (A in hexadecimal)) (step S703). That is, the physical address “9.A.0.0 (hexadecimal notation)” is generated. As described above, the wired device identifier generation unit 203 generates the physical address and then generates the physical address 9. A. 0.0 is stored in the wired device identifier storage unit 205 (step S603). Further, the wireless transmission device 101 broadcasts a message notifying that the physical address assigned to itself is “9.A.0.0” via the wireless transmission unit 201.

  Next, the value stored in the physical address storage area of the EDID is determined from the physical address stored in the wired device identifier storage unit 205. A value obtained by combining the generated physical address and the wired port number is written into the physical address storage area of EDID. For example, if the wired port number is 1, “9.A.1.0” is written in the physical address storage area of EDID. Thereafter, the wired device identifier generation unit 203 instructs the wired transmission unit 204 to output an HPD (Hot Plug Detect) signal (step S604). Further, the wired transmission unit 204 notifies the transmission device 103 of the physical address “9.A.1.0” stored in the wired device identifier storage unit 205. The transmission device 103 stores the physical address “9.A.1.0” acquired via the wired transmission unit 401 and the data processing unit 402 in the wired device identifier storage unit 403.

  Similarly, if the wired port number is 2, “9.A.2.0 (hexadecimal notation)” is written in the physical address storage area of EDID. Thereafter, the wired device identifier generation unit 203 instructs the wired transmission unit 204 to output an HPD (Hot Plug Detect) signal (step S604). Further, the wired transmission unit 204 notifies the transmission device 104 of the physical address “9.A.1.0” stored in the wired device identifier storage unit 205. The transmission device 104 stores the physical address “9.A.1.0” acquired via the wired transmission unit 401 and the data processing unit 402 in the wired device identifier storage unit 403.

  As a result, the physical address “9.A.1.0” is assigned to the transmission device 103 connected to the wired port 1, and the physical address “9.A.2.0” is assigned to the transmission device 104 connected to the wired port 2. Is assigned.

  FIG. 9 shows an example of the wired device identifier stored in the wired device identifier storage unit 205 of the wireless transmission device 101. As shown in FIG. 9, the wired device identifier is stored in correspondence with the port number.

  Similarly, when the wireless device identifier of the wireless transmission device 102 is 11, it is 0b001011 when expressed in binary 6 bits. Here, when divided into two groups of 3 bits, the first group becomes 0b001 and the second group becomes 0b011. Here, the first 4 bits (A) are set to 0b1001 (9 in hexadecimal notation) obtained by concatenating the value 0b001 of the first group obtained by dividing the wireless device identifier into 0b1, and the next 4 bits ( B) is 0b1011 (B in hexadecimal) obtained by concatenating the second group value 0b011 obtained by dividing the wireless device identifier into 0b1. That is, the physical address “9.B.0.0 (hexadecimal notation)” is generated. As described above, the wired device identifier generation unit 203 generates the physical address, and then stores the generated physical address in the wired device identifier storage unit 205. Further, the wireless transmission device 101 broadcasts a message notifying that the physical address assigned to itself is “9.B.0.0” via the wireless transmission unit 201.

  Next, the value stored in the physical address storage area of the EDID is determined from the physical address stored in the wired device identifier storage unit 205. A value obtained by combining the generated physical address and the wired port number is written into the physical address storage area of EDID. For example, if the wired port number is 1, “9.B.1.0 (hexadecimal notation)” is written in the physical address storage area of EDID. Thereafter, the wired device identifier generation unit 203 instructs the wired transmission unit 204 to output an HPD signal. The wired transmission unit 204 notifies the transmission device 105 of the physical address “9.B.1.0” stored in the wired device identifier storage unit 205. The transmission device 105 stores the physical address “9.B.1.0” acquired via the wired transmission unit 401 and the data processing unit 402 in the wired device identifier storage unit 403. As a result, the physical address “9.B.1.0” is assigned to the transmission apparatus 105 connected to the wired port 1.

  Similarly, when the wireless device identifier of the wireless transmission device 100 is 0, the physical address “8.8.0.0” is assigned, and the physical address assigned to itself is “8.8.0.0”. A message notifying this is broadcast via the wireless transmission means 301. As illustrated in FIG. 10, the wireless transmission device 100, the wireless transmission device 101, and the wireless transmission device 102 store each wireless transmission device and the wireless device identifier assigned to the wireless transmission device and the physical address in association with each other.

  FIG. 11 shows a physical address assignment result in the first embodiment.

  As illustrated in FIG. 11, the wireless transmission device 101 includes a wireless device identifier “10” and a wired device identifier “9.A.0.0”, and the wireless transmission device 102 includes a wireless device identifier “11” and a wired device. The identifier “9.B.0.0” is assigned. The transmission device 103 has a wired device identifier “9.A.1.0”, the transmission device 104 has a wired device identifier “9.A.2.0”, and the transmission device 105 has a wired device identifier “9.B. .1.0 "is assigned.

  A process when a message including a physical address is transmitted from each transmission apparatus will be described. The wireless transmission device 101 acquires a message transmitted from the transmission device in the wired transmission unit 204. The wired transmission unit 204 includes the physical address “9.A.1.0” in the received message from the correspondence table of the tail port number and the wired device identifier stored in the wired device identifier storage unit 205. In this case, when the transmission device 103 connected to the port 1 includes the physical address “9.A.2.0”, the input is switched to the transmission device 104 connected to the port 2.

  In addition, the wireless transmission device 100 acquires a message transmitted from the transmission device in the wireless transmission unit 301. When the physical address “9.A.1.0” or “9.A.2.0” is included in the received message, the wireless transmission unit 301 determines which case from the correspondence table of FIG. Since the first half of the physical address is “9.A”, it is determined that the message is a message transmitted from the wireless transmission apparatus 101, and input switching to the wireless transmission apparatus 101 is performed. When the input switching is set in the wireless transmission apparatus 102 before the switching, the data transmission stop message is transmitted to the wireless transmission apparatus 102, the data transmission start message is transmitted to the wireless transmission apparatus 101, and the received data Is changed to the wireless transmission apparatus 101.

  Similarly, when the physical address “9.B.1.0” is included, the first half of the physical address is “9.B” from the correspondence table of FIG. The input message is switched to the wireless transmission apparatus 102. When connected to the wireless transmission apparatus 101, a data transmission stop message is transmitted to the wireless transmission apparatus 101, and a data transmission start message is transmitted to the wireless transmission apparatus 102. Change to the wireless transmission device 102.

  With the above operation, the wireless transmission device 100 can receive data from the transmission devices connected to each wireless transmission device without confusing the devices.

  Thus, according to the embodiment of the present invention, in a wireless transmission system in which wireless transmission devices and wired transmission devices are mixed, a unique wired device identifier can be assigned to each wireless transmission device and each wired transmission device.

(Embodiment 2)
The second embodiment of the present invention differs from the first embodiment of the present invention only in the method for generating the wired device identifier from the wireless device identifier in step S602, and only that portion will be described with reference to FIG. . Other operations are the same as those in the first embodiment of the present invention.

  Here, as an example, a case will be described in which the wireless device identifier is a 6-bit value (0 to 31 in decimal) and the wired device identifier is a physical address used in HDMI. Here, “0b” is added to the head of binary notation.

  First, as shown in FIG. 12A, the wired device identifier generation unit 203 divides the 6 bits of the wireless device identifier into two groups of 3 bits each. For example, when the wireless device identifier is 10, it is 0b001010 when expressed in binary 6 bits. Here, when divided into two groups of 3 bits, the first group becomes 0b001 and the second group becomes 0b010.

  The physical addresses of HDMI are divided into 4 groups of 4 bits (ABCD). Each of A to D is 4 bits, and takes a value from 0 to 15 in decimal. As shown in FIGS. 10B and 10C, in the present embodiment, the first group obtained by dividing the first 4 bits (A) into 0b1 and the wireless device identifier into two groups. 0b1110 (E in hexadecimal) is obtained by concatenating 0b110 obtained by inverting 1 and 0 of the value 0b001, and the next 4 bits (B) are obtained by dividing the wireless device identifier into two groups at 0b1. Further, 0b1101 (D in hexadecimal) is obtained by concatenating 0b101 obtained by inverting 1 and 0 of the value 0b010 of the second group. That is, the physical address “ED.0.0 (hexadecimal notation)” is generated. As described above, the wired device identifier generation unit 204 generates the physical address E.E. D. 0.0 is stored in the wired device identifier storage unit 205.

  A value stored in the physical address storage area of the EDID is determined from the physical address stored in the wired device identifier storage unit 205. A value obtained by combining the generated physical address and the wired port number is written into the physical address storage area of EDID. For example, if the wired port number is 1, “ED 1.0 (hexadecimal notation)” is written in the physical address storage area of EDID.

  Thereafter, the wired device identifier generation unit 203 instructs the wired transmission unit 206 to output an HPD (Hot Plug Detect) signal. Similarly, if the wired port number is 2, E.D. is stored in the physical address storage area of EDID. D. Write 2.0 (hexadecimal notation).

  In the present invention, the wireless device identifier is assumed to be 6 bits. However, in the case of other than 6 bits, the wired identifiers are assigned in duplicate by dividing them into a plurality of groups and assigning them to the wired identifiers. Can be prevented.

  Further, the number of groups to be divided is not limited to two.

  Further, in the present invention, the wireless device identifier is included in two of the four fields composed of 4 bits, but may be included in one, or three or more fields.

  In the present invention, the wireless device identifier is included in the lower 3 bits of two of the four fields composed of 4 bits. However, the present invention is not limited to this.

  Further, the method of grouping the wireless device identifiers is not limited to the method of the present embodiment.

  Further, in the present invention, two transmission apparatuses are connected to the wireless transmission apparatus 101 and one transmission apparatus is connected to the wireless transmission apparatus 102, but the same method can be used even when two or more transmission apparatuses are connected. Can generate a wired device identifier.

  In the present invention, as the wired device identifier, one field is 4 bits and an HDMI physical address composed of four fields is used. However, the present invention is not limited to this.

  An identifier identifier setting method according to the present invention and a wireless transmission device using the same have the effect of enabling the device identifier to be uniquely assigned and enabling input switching to be automatically performed between devices. It is useful as a wireless transmission device that performs video and audio transmission.

The figure which shows the structure of the wireless transmission system in this invention The block diagram which shows the structure of the wireless transmission apparatus 101 in this invention The block diagram which shows the structure of the wireless transmission apparatus 100 in this invention The block diagram which shows the structure of the transmission apparatus in this invention The chart figure which shows an example of the radio | wireless apparatus identifier acquisition sequence in this invention The flowchart which shows the process of the wired apparatus identifier production | generation means of this invention The flowchart which shows the production | generation procedure of the wired apparatus identifier of this invention The figure which shows an example of the wired apparatus identifier production | generation process in Embodiment 1 of this invention The figure which shows an example of the wired apparatus identifier memory | storage means The figure which shows an example of the physical address allocation which the wireless transmission apparatus memorize | stores The figure which shows an example of the physical address allocation in the wireless transmission system of this invention The figure which shows an example of the wired apparatus identifier production | generation process in Embodiment 2 of this invention Diagram showing the conventional physical address method

Explanation of symbols

100, 101, 102 Wireless transmission devices 103, 104, 105 Transmission devices 201, 301 Wireless transmission means 202, 302, 402 Data processing means 203 Wired device identifier generation means 204, 401 Wired transmission means 205, 403 Wired device identifier storage means 303 Video display means 304 Audio output means 404 Video audio reproduction means

Claims (16)

Wireless transmission means for transmitting and receiving data using wireless;
Wired transmission means for transmitting and receiving data using wired;
A wireless transmission apparatus comprising: a wired device identifier generating unit configured to generate a device identifier used to identify a device in a wired network from a device identifier used to identify the device in the wireless network.   The wireless transmission device according to claim 1, wherein the wired device identifier generation means divides the wireless device identifier into a plurality of bit strings and uses the divided device identifier as a part of the wired device identifier.   2. The wired device identifier generation means divides a wireless device identifier into a plurality of bit strings, and uses a bit string obtained by inverting 1 and 0 of the divided bit string as a part of the wired device identifier. The wireless transmission device described.   4. The wireless transmission device according to claim 1, wherein said wireless transmission means uses millimeter waves.   5. The wireless transmission device according to claim 1, wherein the wired transmission means uses HDMI.   6. The wireless transmission device according to claim 5, wherein the device identifier generated by the wired device identifier generation means is a physical address used in HDMI.   The wired device identifier generation means divides the wireless device identifier into two bit strings having a half bit length, and each bit string is formed into one or a plurality of fields out of four fields composed of 4 bits of a physical address. The wireless transmission device according to claim 6, wherein the wireless transmission device is included.   The wired device identifier generation means divides the 6-bit device identifier in the radio into two bit strings each having a length of 3 bits, and each bit string is a lower three of two fields out of four fields composed of 4 bits of a physical address. 8. The radio transmission apparatus according to claim 7, wherein the bit is set, and the most significant bit of the two fields is 1. In a device identifier assignment method for a wireless transmission device having a wired interface and a wireless interface,
A device identifier assignment method for generating a device identifier used for identifying a device in a wired network from a device identifier used for identifying the device in a wireless network.   10. The apparatus identifier assigning method according to claim 9, wherein a wireless apparatus identifier is divided into a plurality of bit strings and used as a part of a wired apparatus identifier.   10. The wireless transmission method according to claim 9, wherein the wireless device identifier is divided into a plurality of bit strings, and a bit string obtained by inverting 1 and 0 of the divided bit string is used as a part of the wired device identifier.   12. The apparatus identifier assigning method according to claim 9, wherein millimeter waves are used as the wireless interface.   13. The apparatus identifier assigning method according to claim 9, wherein HDMI is used as the wired interface.   14. The apparatus identifier assigning method according to claim 13, wherein the generated apparatus identifier is a physical address used in HDMI.   The wireless device identifier is divided into two bit strings each having a half-bit length, and each bit string is included in one or a plurality of fields out of four fields composed of 4 bits of a physical address. Item 15. A device identifier assigning method according to Item 14. The device identifier 6 bits in the radio is divided into two bit strings having a length of 3 bits, and each bit string is set to the lower 3 bits of two of the four fields composed of four bits of the physical address, and the two fields 16. The apparatus identifier assigning method according to claim 15, wherein the most significant bit is set to 1.