baber/WOPTO huggingface dataset:
Patent JP-2017518555-A (JP)
Title: Ｈｔｍｌ５関連のアップデートをマークする方法及び装置
IPC: G06F40/143
Filed: 2015-03-25
Abstract: ＨＴＭＬ（hypertext markup language）文書をアップデートするために、ＣＩ（Composition Information）ファイルの命令語に注釈を付けるための方法が提供される。この方法は、命令語の集合を含むＣＩファイルを受信するステップを含む。この方法は、また、現在の提示時間を決定するステップを含む。この方法は、さらに、ＣＩファイルの各々の命令語又は命令語の集合に対して、決定された提示時間に、その命令語又は命令語の集合が、旧式であるか否かを判定するステップを含む。この方法は、ＨＴＭＬ文書をアップデートするために、旧式でないと判定している残りの命令語をパースするステップを含む。
Patent JP-2017515373-A (JP)
Title: 色圧縮のためのクラスタ化およびエンコード
IPC: H04N1/46
Filed: 2015-04-22
Abstract: まず、複数の色は、各グループ内における色の変量が小さくなるように、タイル内で別個のグループにパーティション化される。第２に、各グループは効率的にエンコードされ得る。本明細書に説明されるアルゴリズムは、従前のアルゴリズムより高い圧縮レートを提供し得、従っていくつかの実施形態において、電算処理コストの非常に低い増加でメモリ帯域幅を更に低減し得る。アルゴリズムは、既存の複数のバッファ圧縮アルゴリズムを用いるシステムに追加され得、既存のアルゴリズムが圧縮できない追加の複数のタイルを処理し、それにより全体としての圧縮レートを増加させる。
Patent JP-2017514376-A (JP)
Title: 輻輳した無線アクセスネットワークにおけるランダムアクセスおよびトラフィック進入の制御
IPC: H04W48/06
Filed: 2015-04-07
Abstract: ジョイント制御信号を使用したランダムアクセスおよびトラフィック進入のためのアプリケーションカテゴリーレベルアクセス制御。ジョイント制御信号は、アプリケーションカテゴリーアクセス制御、ならびにアクセス制御がそれについて適用される接続状態を示し得る適用可能性の指示を含み得る。適用可能性の指示はまた、アクセス制御の原因を示し得る。適用可能性の指示は、すべてのアプリケーションカテゴリーアクセス制御、アプリケーションカテゴリーアクセス制御のグループに適用され得るか、または各アプリケーションカテゴリーアクセス制御についての適用可能性の別個の指示があり得る。リソースは、複数の接続状態にあるＵＥのためのアプリケーションカテゴリーアクセス制御の単一のセットを使用することによって温存され得る。ジョイントアクセス制御は、ＳＩＢなど、信号を使用してＵＥに送信され得る。
Patent JP-2017501856-A (JP)
Title: 表面下の吸収材アレイおよび光照射治療
IPC: A61M5/14
Filed: 2015-01-09
Abstract: 光吸収材または光吸収粒子を皮膚内に注入し、該材料または粒子を照射し、熱損傷区域を生じさせるための方法が提供されている。このような方法を用いて、とりわけ、加齢および／または光老化の影響を治療することができる
Patent JP-2017514490-A (JP)
Title: ｉｎ  ｖｉｔｒｏで成長させた感染性Ｐｌａｓｍｏｄｉｕｍスポロゾイト
IPC: C12N1/10
Filed: 2015-05-01
Abstract: 本願は、生殖母細胞期からスポロゾイト期までのスポロゴニーが蚊に対して外側にある、ヒト宿主域のｉｎ ｖｉｔｒｏ飼育されたＰｌａｓｍｏｄｉｕｍスポロゾイトと、これを産生する方法を対象とする。生殖母細胞期からスポロゾイト期までのスポロゴニーが蚊に対して外側にある、ヒト宿主域のｉｎ ｖｉｔｒｏ飼育された感染性Ｐｌａｓｍｏｄｉｕｍスポロゾイト（ＳＰＺ）、特に、Ｐ．ｆａｌｃｉｐａｒｕｍ、Ｐ．ｖｉｖａｘ、Ｐ．ｏｖａｌｅ、Ｐ．ｍａｌａｒｌａｅおよびＰ．ｋｎｏｗｌｅｓｉと、これを産生する方法が本明細書で提供される。
Patent JP-2017517728-A (JP)
Title: エアロゾル粒子質量センサ及び感知方法
IPC: G01N5/02
Filed: 2015-05-18
Abstract: エアロゾル内の粒子質量を測定するための質量センサが提供される。感知サイクルの継続時間が、堆積した粒子に起因する質量の予め設定された変化が引き起こされるように設定される。洗浄がない場合、該センサの寿命は、堆積した総質量に依存する。その結果、各感知動作が、一定量の堆積した粒子の質量をもたらすため、この手法によって寿命が基本的に一定となる。このことは、寿命がより正確に予測されることができることを意味する。
Patent JP-2017524406-A (JP)
Title: リードレス心臓ペースメーカーを用いたレート応答ペーシングのためのシステムおよび方法
IPC: A61B5/0402
Filed: 2015-06-11
Abstract: 患者の心臓に対してレート応答ペーシング治療を提供するためのシステムおよび方法が開示されている。レート応答ペーシング治療を提供する一つの例示的な方法は、心臓内または心臓の近くに埋め込まれるリードレス心臓ペースメーカー（ＬＣＰ）を用いて、心臓電気データを検出する工程を含む。この位置から、ＬＣＰは検出された心臓電気データに少なくとも部分的に基づいて、心臓に対してペーシング治療を提供することができる。心臓の遠隔に位置する植込み型医療装置は患者の活動を検出し、患者の活動データを植込み型医療装置からＬＣＰに、場合によっては伝導通信を介して、無線通信することができる。その後、ＬＣＰは受信された患者の活動データ信号に少なくとも部分的に基づいて、提供されるペーシング治療に対する調整を決定する（例えば、ペーシングレートを調整する）ことができる。
Patent JP-2017518753-A (JP)
Title: 骨折および骨障害の診断および治療のための組成物および方法
IPC: A61K48/00
Filed: 2015-06-11
Abstract: 本発明は、異常な骨ミネラル密度に関連する障害、特に骨粗鬆症の療法、予防および診断に関し；ここで、患者試料中の選択したマイクロＲＮＡのレベルを検出し、そして健康な個体のレベルに比較した、前記レベルの増加または減少が、障害の指標である。
Patent JP-2017520926-A (JP)
Title: パッケージングされた波長変換発光デバイス
IPC: H01L33/50
Filed: 2015-06-23
Abstract: 本発明の実施形態は、複数の発光デバイス（１）を含み、複数のうちの１個の発光デバイスが第１のピーク波長を有する光を発光するように構成されている。波長変換層（３０）が、複数の発光デバイスにより発光される光の光路内に配置される。波長変換層（３０）が、発光デバイスにより発光された光を吸収し第２のピーク波長を有する光を発する。複数の発光デバイス（１）が、波長変換層（３０）を通じてのみ、互いに機械的に接続されている。他の実施形態において、波長変換層が発光デバイスの上に位置され、接着層又は光学素子層が波長変換層の上及び側部表面に位置され、発光デバイスが、波長変換層を通じてのみ互いに機械的に接続されている。
Patent JP-2017520851-A (JP)
Title: トランザクションにおけるレジスタの動的なセーブ
IPC: G06F12/00
Filed: 2015-06-11
Abstract: データ処理装置は、それぞれがデータを記憶するように構成される、複数のデータ・ストレージ要素を備える。マスク・ストレージ回路はマスクを記憶し、処理回路は１つ又は複数の命令を実行する。データ・セーブ手段は、トランザクション開始命令に応答して、データ・ストレージ要素のサブセットを選択してデータ・ストレージ要素のサブセットのバックアップをセーブするように構成される。次に、マスク制御回路は、データ・セーブ手段によって選択されたデータ・ストレージ要素のサブセットを示すようにマスクをアップデートする。最後に、モニタはマスクによって示されなかったデータ・ストレージ要素のうちの１つに行われた書き込み又は書き込み試行を検出する。したがって、ユーザはシステム内のすべてのデータ・ストレージ要素、例えばレジスタ、をセーブする必要がなく、トランザクションを実行するためにどのデータ・ストレージ要素をセーブしなければならないかを詳細に特定する必要もない。その代わりに、セーブされなければならないデータ・ストレージ要素のセットが動的に決定されて特定され、セーブ又はバックアップされていないデータ・ストレージ要素への書き込み試行が行われた場合にシステムが応答可能である。
Patent JP-2018112585-A (JP)
Title: Fixing device and image forming apparatus including the same
Inventor: KASAMA KENICHI
IPC: G03G15/20
Filed: 2017-01-06
Abstract: PROBLEM TO BE SOLVED: To provide a fixing device that can reduce the generation of a discharge product and reduce the amount of floating matter, such as a discharge product attached to a discharge electrode to inhibit degradation of a charger.SOLUTION: A fixing device 7 of the present invention comprises: a fixing roller 31 that rotates to heat a toner image on a sheet S; a pressure roller 32 that rotates to form a fixing nip N2 with the fixing roller 31 and applies pressure to the sheet S passing through the fixing nip N2; and a charger 34 that charges the fixing roller 31 to have the same polarity as that of toner of the toner image by using corona discharge occurring in an electric field generated on the periphery of a discharge electrode 40 opposed to the fixing roller 31. The charger 34 includes a fixing bias power supply 43 that applies a fixing bias to the discharge electrode 40, and increases the fixing bias in response to a decrease in the value of fixing voltage generated between the fixing bias power supply 43 and discharge electrode 40 and decreases the fixing bias in response to an increase in the value of fixing voltage generated between the fixing bias power supply 43 and discharge electrode 40.SELECTED DRAWING: Figure 4
Patent JP-2018112436-A (JP)
Title: Contact state evaluation device
Inventor: FUKAGAI SHINYA
IPC: G01N29/48
Filed: 2017-01-10
Abstract: PROBLEM TO BE SOLVED: To provide a contact state evaluation device capable of easily measuring a contact state in the boundary part between a first member and a second member.SOLUTION: When an ultrasonic wave measuring device 3 transmits ultrasonic waves toward a boundary part B between a member 1 and a member 2, the ultrasonic wave measuring device 3 receives the ultrasonic wave reflected at the boundary part B. When the ultrasonic measuring device 3 detects the intensity of the ultrasonic wave reflected at the boundary part B, ultrasonic intensity information detected by the ultrasonic wave measuring device 3 is transmitted from the ultrasonic wave measuring device 3 to a contact state evaluation device 8. A transmission wave height ratio is calculated by a contract state evaluation device 8 from the height of a reflected ultrasonic wave between members 1,2 in a non-load state and the wave height of a reflected ultrasonic wave between members 1,2 at a time of loading, and the contact state evaluation device 8 calculates the ultrasonic transmission rate. The contact state evaluation device 8 refers to the correlation information indicating the correlation between the coefficient of friction and the ultrasonic wave transmission rate, and the contact state evaluation device 8 identifies the coefficient of friction μ between the members 1, 2 corresponding to the ultrasonic wave transmission rate.SELECTED DRAWING: Figure 1
Patent JP-2018110804-A (JP)
Title: Medical image processing device, medical image processing method, and medical image processing program
Inventor: NAGAO MITSUNOBU
IPC: A61B5/055
Filed: 2017-01-13
Abstract: PROBLEM TO BE SOLVED: To provide a medical image processing device which can easily increase estimation accuracy of a blood stream of an observation portion of a subject in which flow is relatively slow and an eddy is easily generated.SOLUTION: A medical image processing device acquires a plurality of cross-sectional images arrayed in time series including a blood stream having at least one of an eddy and a residence, acquires motion information related to deformation of the cross-sectional images on the basis of the plurality of cross-sectional images, acquires information indicating a state of the blood stream on the basis of at least one of a movement amount, a speed and a distortion amount in the motion information, and generates a display image by superposing the information indicating the state of the blood stream on the cross-sectional images. The information indicating the state of the blood stream includes at least one information about the eddy and the residence having an in-plane component in parallel with the cross section of the cross-sectional images.SELECTED DRAWING: Figure 2
Patent JP-2018114706-A (JP)
Title: Ink-jet recording device
Inventor: OGASAWARA OKITO
IPC: B41J29/393
Filed: 2017-01-20
Abstract: PROBLEM TO BE SOLVED: To provide an ink-jet recording device capable of property grasping clogging of a nozzle even when a detector having detection elements substantially the same number of a plurality of ink discharge nozzles is used.SOLUTION: In an ink-jet recording device, a control section forms a test chart Tc in which a plurality of line sets Ls where a plurality of numbers of lines L that are formed of ink discharged from a single ink discharge nozzle and extend in a paper conveyance direction are aligned in a paper width direction are drawn so as to be sequentially shifted in the paper width direction line by line every time the paper P advances in the conveyance direction by a predetermined length, between both ends in the paper width direction. The control section detects presence/absence of ink for each of the plurality of line sets Ls drawn in the test chart Tc using a detector 50, and discriminates presence/absence of a defective pixel and a position of the defective pixel on the basis of the detection result.SELECTED DRAWING: Figure 5
Patent JP-2018117804-A (JP)
Title: Game machine
Inventor: OGURA TOSHIO
IPC: A63F5/04
Filed: 2017-01-24
Abstract: PROBLEM TO BE SOLVED: To reduce processing load related to imparted sound.SOLUTION: A game machine does not resume output of delivery sound when delivery is resumed at a time t8 after release of an error state which has occurred at a time t6 before completion of token delivery for winning of a right-downward bell.SELECTED DRAWING: Figure 13
Patent JP-2017134073-A (JP)
Title: Scale and position-measuring device having such a scale
Inventor: STEFAN FUNK
IPC: G01B11/00
Filed: 2017-01-25
Abstract: PROBLEM TO BE SOLVED: To provide a scale with an amplitude grating for an optically scanning position-measuring device, the scale comprising a carrier T, the carrier having disposed thereon a reflective layer S, the reflective layer being followed by a transparent spacer layer A, and the spacer layer having a grating partially transparent layer M disposed thereon.SOLUTION: The partially transparent layer M defines a bright/dark pattern, in which regions having the partially transparent layer M appear dark and regions without the partially transparent layer M appear bright. A sealing layer V is disposed on the patterned, partially transparent layer M. Products of refractive index n, nand layer thickness d, dare the same for the spacer layer A and the sealing layer V, or differ by an odd multiple.SELECTED DRAWING: Figure 2
Patent JP-2018119058-A (JP)
Title: Polyion complex, electrolyte for electric double-layered capacitor, and electric double-layered capacitor
Inventor: HAYANO SHIGETAKA
IPC: C08G65/32
Filed: 2017-01-25
Abstract: PROBLEM TO BE SOLVED: To provide a polyion complex having excellent ionic conductivity.SOLUTION: A polyion complex has: a polyether compound having a cationic group; and a counter anion having two or more monovalent anionic groups in the molecule. In the polyion complex, the polyether compound having the cationic group is preferably composed of a monomer unit represented by formula (1). (Ais a cationic group or a cationic group-containing group; R is a nonionic group; n is an integer of 2 or greater; m is an integer of 0 or greater; n+m≥5).SELECTED DRAWING: None
Patent JP-2018120179-A (JP)
Title: Electrophotographic photoreceptor, process cartridge, and image forming apparatus
Inventor: SHIMIZU TOMOFUMI
IPC: G03G21/00
Filed: 2017-01-27
Abstract: PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor that can achieve both excellent sensitivity characteristic and toner image transferability.SOLUTION: An electrophotographic photoreceptor comprises a conductive substrate and a photosensitive layer. The photosensitive layer is a single-layer photosensitive layer. The photosensitive layer contains a charge generating agent, a hole transport agent, an electron transport agent, a binder resin, and an addition agent. The addition agent contains carboxylic acid anhydride. The reduction potential of the carboxylic acid anhydride is -1.40 V or more relative to a reference potential (Ag/Ag). The content of the carboxylic acid anhydride is 0.02 parts by mass or more and 10.00 parts by mass or less based on 100 parts by mass of the binder resin.SELECTED DRAWING: Figure 1
Patent JP-2018123523-A (JP)
Title: Artificial lawn
Inventor: HAMAMOTO TAKESHI
IPC: E01C13/08
Filed: 2017-01-31
Abstract: PROBLEM TO BE SOLVED: To provide an artificial lawn of which a feeling of use changes only a little in different environmental conditions, such as under sunlight, rainy weather, after sprinkling water, etc.SOLUTION: An artificial lawn has a filler layer formed by filling a filler material between lawn-like yarns, the filler material of the filler layer comprising hard particles at a volume ratio between 1% and 50%, a palm filler material at a volume ratio between 5% and 45%, and elastic particles in the remaining portion. A temperature rise suppression effect brought about by evaporation heat may be obtained appropriately, because the palm filler material is contained at the volume ratio of 5% or more and moisture contained in the palm filler material evaporates when a temperature rises. On the other hand, aggravation of a feeling of touch and generation of an abnormal sound may be suppressed in rainy weather or when water is sprinkled on the artificial lawn, because the volume ratio of the palm filler material that holds moisture is kept at 45% or less. A change in a feeling of use may be kept small when the filler layer is dry and when moist, because the hard particles are contained in the filler layer at the volume ratio of 50% or less and the remaining portion of the filler layer is formed by the elastic particles.SELECTED DRAWING: Figure 1
Patent JP-2018122530-A (JP)
Title: Decorative panel
Inventor: FUSHIKI EIJIRO
IPC: G09F7/00
Filed: 2017-02-01
Abstract: PROBLEM TO BE SOLVED: To provide a decorative panel whose translucency enhances decoration effect and eliminates overlapping of the decorative patterns on the front and back thereof.SOLUTION: The decorative panel 1 includes: a polycarbonate plate 2 that has light transmissivity; a first mesh screen 3 that has a decoration pattern 3c on the front surface 3a and has the back surface 3b abuttingly laminated on the first surface 2a of the polycarbonate plate 2; and a second mesh screen 4 that has a decoration pattern 4c on the front surface 3a and the back surface 4b abuttingly laminated on the second surface 2b of the polycarbonate plate 2. Thereby the panel 1 has the decoration effect of the decoration patterns 3c, 4c on both sides enhanced due to the light transmissivity of the parts without the decoration patterns 3c, 4c provided thereon.SELECTED DRAWING: Figure 1
Patent JP-2018121984-A (JP)
Title: Game machine
Inventor: KURATA TAKESHI
IPC: A63F7/02
Filed: 2017-02-03
Abstract: PROBLEM TO BE SOLVED: To provide a game machine capable of suitably performing management of a game machine.SOLUTION: An MPU 62 includes not only a main-side CPU 63 but also a management IC 66. The main-side CPU 63 is electrically connected to the management IC 66, and a detection result of each ball entry detection sensor is transmitted from the main-side CPU 63 to the management IC 66. In this case, the detection result of each ball entry detection sensor is transmitted to the management IC 66 through each corresponding signal path, and a corresponding relationship between each ball entry detection sensor and the signal path is supplied from the main-side CPU 63 to the management IC 66 when starting to supply operating power. The management IC 66 stores information on the detection result of each ball entry detection sensor in a history memory 117 as history information. A management-side CPU 112 calculates each kind of parameter by utilizing history information of the history memory 117 in occurrence of an operation opportunity. The history information and each kind of parameter are outputted to the outside through a reading terminal 102.SELECTED DRAWING: Figure 13
Patent JP-2018126177-A (JP)
Title: Dolly
Inventor: MEYA TETSUOKI
IPC: A61G12/00
Filed: 2017-02-06
Abstract: PROBLEM TO BE SOLVED: To provide a dolly capable of reducing contamination of air due to odor emitted from a used diaper.SOLUTION: A dolly comprises: a housing 10 formed into an almost rectangular parallelepiped shape, in which plural wheels 101a-101d are arranged on a lower side bottom face so as to move in a direct advance, and in the housing 10, a storage space 11 capable of storing a storage container 20 for storing an object to be stored from an upper opening is defined; a front door part 12 which is provided on a front opening formed on a front side face of the housing 10 so that the storage container 20 can be carried in and carried out from a front side of a direct advance direction to the storage space 11; an upper door part 13 which is provided on an upper opening formed on an upper bottom face of the housing 10 so as to store an object to be stored in the storage container 20 from an upper side with respect to the storage space 11; an injection part 14 arranged in the storage space 11, which injects air to a front side from a rear side of the direct advance direction, and closes the upper opening by an air flow formed by the injection; and an air purification part 15 provided on the front door part 12 and purifies the air in the storage space 11.SELECTED DRAWING: Figure 1
Patent JP-2018128487-A (JP)
Title: Electrooptical panel, electrooptical device, and electronic apparatus
Inventor: FUJIKAWA SHINSUKE
IPC: G09F9/00
Filed: 2017-02-06
Abstract: PROBLEM TO BE SOLVED: To make it possible to achieve a compact, high-definition electrooptical device on which an IC for driving can be mounted.SOLUTION: There is provided an electrooptical panel 1000A that comprises a first area 10A in which a circuit is formed, and terminal areas 150A-1, 150A-2 that are arranged side by side in a Y-direction when seen from the first area 10A, where terminal groups consisting of a plurality of terminals arranged side by side in an X-direction different from the Y-direction are arranged respectively in the terminal areas 150A-1, 150A-2; at least one of wires reaching the first area 10A from the terminal area 150A-1 and wires reaching the first area 10A from the terminal area 150A-2 have at least part of the wires drawn from between the terminal area 150A-1 and terminal area 150A-2, and reaching the first area 10A through the outside of the terminal area 150A-1 when seen from the central axis of the electrooptical panel 1000A extending in the Y-direction.SELECTED DRAWING: Figure 1
Patent JP-2018127234-A (JP)
Title: Valve and valve set using the same
Inventor: TAKASHIMA HIROAKI
IPC: B65D47/20
Filed: 2017-02-07
Abstract: PROBLEM TO BE SOLVED: To provide a valve with improved sealability which does not require slit processing for making outlet after molding.SOLUTION: A valve comprises a valve main body, which has a polygonal periphery and is made of hard resin, possible to open and close according to pressure from a container main body, and a collar part protruding from the whole periphery of the valve main body. The valve main body has a group of valve pieces, elastically deformable and extending from each side of the polygonal periphery. A valve piece has a first plate part, a first hinge part, a second plate part, and a second hinge part in the order from the tip to the side. The first hinge part and the second hinge part support their tips to deform. When the second plate group, made of wholly aggregated second plate parts, is pressed from the other side of the container main body, the valve main body is closed and the first plate part of the first plate group, made of wholly aggregated first plate parts, is placed closely in the circumferential direction. When the closed valve main body is pressed from the container main body, the first plate part is deformable from the first hinge parts as supporting points toward the other side of the container main body.SELECTED DRAWING: Figure 1
Patent JP-2018129625-A (JP)
Title: Control device, control program, and control method
Inventor: ENDO HIROYUKI
IPC: G06T1/00
Filed: 2017-02-07
Abstract: PROBLEM TO BE SOLVED: To expand a color gamut reproduced on prints.SOLUTION: A control device includes: calculation means for calculating a second combination that reproduces a color reproduced by combining ink of a plurality of colors by a first combination by increasing an amount of ink of a particular color among the plurality of colors and reducing amounts of ink of colors other than the particular color; determination means for changing the second combination by increasing the amounts of ink other than the particular color in a range not exceeding a total amount of ink of the plurality of colors used in the first combination and determining a third combination; and generation means for generating information indicating correspondence relation between the first combination and the third combination.SELECTED DRAWING: Figure 1
Patent JP-2018128071-A (JP)
Title: Half-split bearing
Inventor: SATO HIROKI
IPC: F16C33/10
Filed: 2017-02-08
Abstract: PROBLEM TO BE SOLVED: To discharge foreign matter entering inside a groove in a half-split bearing having the groove on an inner peripheral surface.SOLUTION: A first groove 111, a second groove 112, a fourth groove 114, and a third groove 113 are provided on an inner peripheral surface 12 of a half-split bearing 10. The fourth groove 114 connects ends on an axial direction end surface side of the first grooves 111 adjacent with each other in a circumferential direction. The third groove 113 connects the first groove 111 and the second groove 112 adjacent with each other in the circumferential direction, and is connected with the fourth groove 114. Foreign matter entering inside the first groove 111 flows from an axial direction center side to the axial direction end surface side in the first groove 111, and is moved to the fourth groove 114. The foreign matter moved to the fourth groove 114 is discharged to the outside from the axial direction end surface through the third groove 113 and the second groove 112.SELECTED DRAWING: Figure 1
Patent JP-2018129741-A (JP)
Title: Communication apparatus, communication system, communication method, and program
Inventor: YAMAMOTO SHINYA
IPC: H04W4/08
Filed: 2017-02-10
Abstract: PROBLEM TO BE SOLVED: To provide a communication apparatus, a communication system, a communication method, and a program that enable data distribution to a plurality of terminals to be performed efficiently.SOLUTION: The communication apparatus includes: a receiving unit that receives data to which an identification code of a distribution destination is given; a distribution unit that distributes data to a network; a storage unit that stores at least one group of the plurality of identification codes; and a control unit for instructing the distribution unit to distribute data to a group by multicasting when all of the plurality of identification codes registered in the group stored in the storage unit are included in the identification code of the distribution destination received by the receiving unit and instructing to deliver by unicast when the identification code of the distribution destination received by the receiving unit is not included in any of the group.SELECTED DRAWING: Figure 1