Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

31results about How to "Play the role of power saving" patented technology

Method for reducing consumption of mobile phone battery and mobile phone thereof

The invention discloses a method for reducing consumption of a mobile phone battery and a mobile phone thereof. The method comprises the steps of: when the mobile phone enters a standby and screen-locking state, simultaneously extinguishing all backlights on a screen; monitoring the operation of a user, judging whether the operation is a screen-unlocking operation; and if the operation is a screen-locking operation, conducting an NMOS (N-Mental-Oxide-Semiconductor) pipe, lighting an appointed backlight used for looking the time, the unread message or missed call. Because the NMOS pipe is adopted for conducting the appointed backlight when the mobile phone is in the standby and screen-locking state, the newly added backlight or the original LCD backlight is utilized for looking the time and finding whether the unread message or missed call exists or not under special demands, and one appointed backlight is only opened through a control signal and a CMOS (Complementary Metal Oxide Semiconductor) switching element additionally arranged on a hardware circuit without opening all LCD backlights, thus the consumption of the mobile phone battery is reduced, and the function of saving electricity is obtained, and the standby time of the mobile phone is prolonged.
Owner:HUIZHOU TCL MOBILE COMM CO LTD

Television auto-shutdown system

The invention discloses a TV automatic shutdown device, consisting of a case body, a passive infrared detector, a delay circuit and a switch control module. The passive infrared detector consists of a pyroelectric infrared sensor, a Fresnel lens, an amplification circuit and an output circuit. The Fresnel lens is arranged in front of the pyroelectric infrared sensor which is connected with the amplification circuit. The amplification circuit is connected with a micro-computer processor. electric signals transformed through the pyroelectric infrared sensor and signals amplified and transformed through the amplification circuit are electrically connected with the micro-computer processor. The micro-computer processor is connected with the delay circuit which is electrically connected with the switch control module. The passive infrared detector is arranged in the case body and is installed on the top cover of the TV set. The TV automatic shutdown device designed through the technical proposal has the advantage of intellectually recognizing that whether people watch TV or fall asleep and turning off TV power to save power when people who watch TV fall asleep.
Owner:JINGAN DISTRICT JUVENILE ACTIVITY CENT

Noise suppression method, apparatus and system for voice application system of front-end device

The invention discloses a noise suppression method for a voice application system of a front-end device. The noise suppression method is applied to the front-end device connected to a sound output device and comprises the steps that: a sound input device collects ambient sound, the front-end device obtains the sound strength of the ambient sound according to the collected ambient sound as an ambient noise threshold and store the same; the sound strength of real-time input sound is compared with that of the ambient noise threshold; when the input sound strength is smaller than the ambient noise threshold and the duration reaches a preset duration, the connection with the sound output device is disconnected; and when the input sound strength is larger than the ambient noise threshold, the connection with the sound output device is connected. The invention further discloses an apparatus and a system corresponding to the method, the entire voice opening and closing process of the noise suppression method disclosed by the invention is automatically controlled by IPC without user intervention; and a sound box can have good antijamming capability in various external environments, and inputs no noise in a standby state.
Owner:ZHEJIANG UNIVIEW TECH CO LTD

Method for pushing advertisement based on shake mode, and terminal device

The embodiment of the invention relates to the technical field of smart home, and discloses a method for pushing advertisement based on a shake mode, and a terminal device. The method comprises the steps of monitoring whether a user carries out a shake operation on the terminal device or not; starting a wireless connection function to search a nearby new media screen if the user carries out the shake operation on the terminal device; establishing wireless connection with the new media screen after the new media screen is searched; sending a waking instruction to the new media screen by employing the wireless connection; and enabling the waken new media screen to push the advertisement. Through application of the embodiment of the method and the mobile device, the new media screen is waken when the user has a requirement; the advertisement can be pushed to the user with the requirement, without carrying out continuous roll playing on the advertisement for 24 hours; the loss of the new media screen hardware is reduced; and the power is saved.
Owner:SHENZHEN BOKE INTELLIGENT SCI & TECH

Optical image stabilization voice coil motor

Discloses is an optical image stabilization voice coil motor. The motor comprises a housing and a base connected with the housing, a frame is disposed in the housing, an upper end face of the housing is provided with a central through hole, a lens carrier is disposed in the central through hole, an upper elastic piece outer frame of an upper elastic piece is installed on the frame, and a lower elastic piece outer frame of a lower elastic piece is installed on the base. The motor is characterized in that an upper coil and a lower coil are installed on a side wall of the lens carrier, and the upper coil and the lower coil are arranged side by side from top to bottom; an upper magnet and a lower magnet are disposed respectively corresponding to the upper coil and the lower coil, and the upper magnet and the lower magnet have opposite polarities; and one of the upper and lower coils corresponds to one magnet, and the other one of the upper and lower coils corresponds to the two magnets. The motor has the advantages of simple structure, low production cost, electricity conservation and multi-DOF (degree of freedom) image stabilization.
Owner:NINGBO JCT ELECTRONICS

Signal strength display method and mobile terminal

The invention provides a signal strength display method. Signal strength detected by a Modem is inquired N times by an AP in one time period, or signal strength detected by a Modem is reported to an AP in one time period, N is a natural number and larger than or equal to 2; the sum S1 of the inquired or reported signal strength in one time period is calculated, and the sum S2 of the inquired or reported signal strength in a next time period is calculated; whether the absolute value of S2-S1 is smaller than a preset value or not is judged, and if yes, the AP does not perform processing; if not, the newest signal strength inquired in the next time period is reported by the AP; the corresponding signal bar is displayed according to the signal strength reported by the AP. Due to the method, the AP awakening frequency is reduced, and the power saving effect is achieved. When the changing degree of the sum of two kinds of signal strength exceeds preset degree, the signal strength is displayed as the newest signal strength inquired in the next time period, and therefore the signal strength detected in the process can be filtered out, and a display signal is stabilized.
Owner:QINGDAO HISENSE MOBILE COMM TECH CO LTD

Intelligent confidential cabinet

The invention discloses an intelligent confidential cabinet, comprising a cabinet body that is circular; the cabinet body is divided into four storage cells by two vertically arranged partitions, theoutside of each storage cell is provided with a cabinet door, the junction of the two partitions is provided with a rotating device that drives the cabinet body to rotate, three of the storage cells are received in a wall, a mouse repeller and an infrared sensor are arranged in each storage cell, and the mouse repellers operate after the infrared sensors sense entry of abnormal living thing into the cabinet body; the cabinet doors are opened in facial recognition manner. Three quarters of the cabinet body are hidden in the wall so that space can be saved; after the infrared sensors sense the entry of abnormal living things, such as mice and cockroaches, into the cabinet body, the mouse repellers operate and repel the abnormal living things, such as mice and cockroaches; when no abnormal living things enter the cabinet body, the mouse repellers do not operate so that power is saved; the cabinet doors are opened in the facial recognition manner, the intelligence level is high, and peoplehave no need to carry keys.
Owner:NINGBO XINHAI METAL CABINET MFG

Vehicle electric door lock controller

The invention discloses a vehicle electric door lock controller comprising a pedestal, and a drive motor, a worm gear and a swing arm arranged in a corresponding containing room in the pedestal; an output shaft of the drive motor is fixedly provided with a worm rod engaged with the worm gear; one end of the swing arm is positioned on the pedestal through a hinge pin; the other end of the swing arm faces the worm gear; the worm gear rotates to drive the swing arm to rotate back and forth around the hinge pin with certain angel and position; the vehicle electric door lock controller also comprises an elastic piece, an elastic conduction piece and a circuit board; in a swing process of the swing arm, the elastic piece can elastically press against one side of the middle portion of the swing arm; the elastic conduction piece is fixed on the other side of the middle portion of the swing arm; the circuit board is fixed on the pedestal; the elastic conduction piece is in elastic contact with the circuit board for conduction connection. The vehicle electric door lock controller uses pulse power supply to control positive and negative rotation of the motor, can elastically open and close an vehicle electric door lock, thus improving vehicle electric door lock open and close reliability.
Owner:HAOYUE AUTOMOBILE SAFETY SYSTEM TECHNOLOGY LIMITED BY SHARE LTD

Solar air cleaner

The invention discloses a solar energy suction cleaner, which is characterized in that, based on the existing suction cleaner, a solar panel is installed on the housing of the suction cleaner, and the panel is connected to the accumulator provided in the suction cleaner through a circuit. Compared with the existing suction cleaner, the suction cleaner with the solar panel can generate electricity itself through the solar panel and store the electricity in the accumulator. Different from other suction cleaners, the suction cleaner with the solar panel can generate electricity itself through the solar panel to supply the motor of the suction cleaner, playing a role of environmental protection and electricity saving.
Owner:SHANGHAI NANHUI HUINAN CHENGDONG CENT PRIMARY SCHOOL

Hanging basket template positioning device

The invention discloses a hanging basket template positioning device. The hanging basket template positioning device comprises an upper cross beam. The hanging basket template positioning device is simple in structure. By being connected with an outer power source, an electromagnet has magnetism, a permanent magnet is attracted to move upwards, the permanent magnet drives a movable pulley to move upwards together, the movable pulley can play labor-saving and electricity-saving roles, the movable pulley can drive a clamping rod to move upwards, so that the clamping rod is separated from a first through hole of a safety cock, the safety cock is pulled out from a screw rod manually, and replacing is conducted; during being installed, the safety cock is vertically inserted into the screw rod, when a positioning block abuts against the side wall of the screw rod, the safety cock stops moving, and meanwhile, the outer power source is disconnected, the electromagnet loses magnetism, the permanent magnet moves downwards, when the clamping rod extends into the first through hole, an elastic convex block is in clamped connection with a limiting groove, so that the safety cock is fixed, and the function of convenient disassembling and assembling is achieved; and resource waste caused by disassembling the safety cock is avoided.
Owner:GUIZHOU XINLIAN BLAST ENG GRP

Message processing method and device, storage medium and electronic equipment

The invention relates to a message processing method and a device, a storage medium and electronic equipment. The method comprises the following steps: awakening a camera shooting function according to a received incoming message; collecting a face image or video; performing face recognition verification on the acquired face image or video; if the verification is passed, unlocking the screen; andwhen the unlocking is successful, opening and displaying the incoming message. The method further comprises the following steps: awakening an infrared induction function according to a received incoming message; acquiring an infrared signal; and processing the infrared signal to obtain an infrared control instruction, awakening the screen according to the infrared control instruction, adjusting the brightness of the screen or hiding the incoming message, and performing screen locking operation. By means of the method, automatic and rapid opening and hiding of incoming messages are achieved bycombining face recognition and infrared induction technologies, and privacy of users is protected timely, conveniently and better.
Owner:GREE ELECTRIC APPLIANCES INC

Double-layer induction cooker

The invention provides a double-layer induction cooker, which structurally comprises a work panel, a layer of heating plate, a heating coil, a composite heating plate, a composite drawer, an anti-dropbayonet, a liquid crystal display panel, a retraction plate and a gap, wherein the work panel is fixedly connected with the heating plate; the heating coil is arranged on the heating plate; the composite heating plate is arranged at the lower part of the heating plate; the composite drawer is arranged at the lower part of the composite heating plate; the gap is fixedly connected with the composite drawer; the retraction plate is movably connected with the composite drawer through the gap; the liquid crystal display panel is arranged at the right side of the anti-drop bayonet; the composite heating plate is provided with a magnetic field strip, a conductor and a rotating shaft; the rotating shaft is movably connected with the magnetic field strip; and the conductor is movably connected with the rotating shaft. The double-layer induction cooker is provided with the composite heating plate, so that the double-layer induction cooker has heating and power-saving functions at the same timeand can be more power-saving during double-layer heating.
Owner:陈永航

Power-saving infrared video camera

The invention discloses a power-saving infrared video camera comprising an infrared video camera, a power source, a power source management chip and a timer. The power source management chip is connected with the timer, and the power source, the power source management chip and the infrared video camera are sequentially serially connected. By the above structure, operation time of the infrared video camera can be set, periodical operation of the infrared video camera can be realized, and power is saved.
Owner:JING LIN CHENGDU SCI & TECH

Bus window capable of achieving self-rescue in case of falling into water

The invention discloses a bus window capable of achieving self-rescue in case of falling into water. The bus window comprises a window frame and a window body made of glass, wherein the periphery of the window body is embedded in the window frame, the portions, located below the two corners of the window body, of the window frame are each provided with a window breaking groove, the portion, located below the window breaking grooves, of the window frame is provided with a U-shaped cavity, the two ends of the U-shaped cavity are just located on the two sides of the window body, and a window breaking device is arranged in the U-shaped cavity. The bus window has the advantages that when a bus falls into water, a bus body moves to the water depth under the action of the great gravity of the bus body, a sliding plate slides towards a connecting port under the action of water pressure, water flows into the U-shaped cavity from a one-way water guide pipe, a metal sodium block generates a severe chemical reaction after encountering water, on one hand, hydrogen is generated, on the other hand, a large amount of heat is generated, glass is embrittled when the heat is used for heating window glass, and the breaking success rate of the window body is increased.
Owner:刘晓燕

USB lamp

The invention relates to the technical field of illuminating tools, in particular to a USB lamp. The USB lamp comprises a USB socket and a mounting plate, wherein 1-5 LED lamps are arranged on the frontal surface of the mounting plate; and 1-3 suckers are arranged on the back surface of the mounting plate. A USB is adopted to supply electricity so that the USB lamp dose not need to be connected with an external electric supply socket; the suckers are arranged on the back surface of the connecting plate, and the LED lamps arranged on the connecting plate are only sucked on a shell of a computer monitor through the suckers, so that the illuminating effect can be achieved, and the electricity saving effect is achieved to improve economic efficiency; and the USB lamp is simple in structure, and is conveniently used.
Owner:余正忠

Glass crucible for induction cooker

The invention discloses a glass crucible for an induction cooker. The glass crucible for the induction cooker comprises a glass crucible body; the inner wall of the glass crucible body is provided with an asbestos layer; the inner portion of the asbestos layer is provided with a stainless steel ring sleeve; the top of the stainless steel ring sleeve is fixedly connected with a ceramic piece; a stainless steel piece is fixedly connected to the top of the ceramic piece; the top of the stainless steel piece is fixedly disposed with a placement layer; one side of the glass crucible body is provided with a heating element; the top of the placement layer is provided with a placement tray; and the top of the placement tray is provided with a rubber pad. The glass crucible for the induction cookerdisclosed by the invention is provided with the asbestos layer and the glass crucible body, which has the advantages of simple structure, high thermal efficiency, low cost, energy saving, safety, environmental protection and the like, and can also improve the heating effect of the glass crucible and play a role in power saving; the operation is convenient and efficient, and the cost is low; and the glass crucible for the induction cooker is suitable for popularization and use, and brings better use prospects.
Owner:安徽晶丽玻璃器皿有限公司

Corner wall lamp

ActiveCN108458277APlay the effect of one light with multiple functionsPlay the role of power savingLighting support devicesElectric circuit arrangementsElectricityEngineering
The invention discloses a corner wall lamp. The corner wall lamp comprises an L-shaped wall-mounted outer frame, wherein lamp tubes are arranged in the L-shaped wall-mounted outer frame. The corner wall lamp is characterized in that a rotatable lamp housing is arranged in the L-shaped wall-mounted outer frame; the lamp tubes are arranged in the lamp housing; the wall lamp rotates to an appointed angle through a stepping motor when a plurality of infrared induction devices detect people passing to play a multipurpose role; when people move from one wall to another wall, the wall lamp will rotate therewith to another wall, and the lamp close to the wall touches a spring switch to be turned off, so that electricity is saved; and by means of the design of the corner lamp, the cost and electricity can be saved, and the corner wall lamp is simple in structure and convenient to use.
Owner:徐州昊德照明有限公司

A corner wall lamp

ActiveCN108458277BPlay the effect of one light with multiple functionsPlay the role of power savingLighting support devicesElectric circuit arrangementsElectricityEngineering
The invention discloses a corner wall lamp. The corner wall lamp comprises an L-shaped wall-mounted outer frame, wherein lamp tubes are arranged in the L-shaped wall-mounted outer frame. The corner wall lamp is characterized in that a rotatable lamp housing is arranged in the L-shaped wall-mounted outer frame; the lamp tubes are arranged in the lamp housing; the wall lamp rotates to an appointed angle through a stepping motor when a plurality of infrared induction devices detect people passing to play a multipurpose role; when people move from one wall to another wall, the wall lamp will rotate therewith to another wall, and the lamp close to the wall touches a spring switch to be turned off, so that electricity is saved; and by means of the design of the corner lamp, the cost and electricity can be saved, and the corner wall lamp is simple in structure and convenient to use.
Owner:徐州昊德照明有限公司

Control method of electronic equipment, control device of electronic equipment and electronic equipment

The invention discloses a control method of electronic equipment, a control device of the electronic equipment and the electronic equipment. The electronic equipment comprises a main body and a moving part, wherein the moving part can move relative to the main body so that at least one part of the moving part can be exposed to the main body. The control method comprises the steps of obtaining a first state of the electronic equipment; determining a first length according to the first state of the electronic equipment; controlling the moving part to move relative to the main body, so that the length of the moving part exposed to the main body after moving is a first length, wherein the first state comprises at least one of the electric quantity of the electronic equipment, the timing moment of the electronic equipment and the time of the electronic equipment. The first state of the electronic equipment is prompted by utilizing the length of the moving part exposed to the main body, so that the electronic equipment is more intuitive, the display time of a screen is shortened, and screen aging is avoided.
Owner:VIVO MOBILE COMM CO LTD

Light-emitting and light-reflecting water conservancy shipping sign

The invention discloses a light-emitting and light-reflecting water conservancy shipping sign which comprises a supporting column. The two sides of the supporting column are connected with large-power illuminating lamp holders through locking devices. Large-power illuminating lamps are arranged on the tops of the large-powder illuminating lamp holders. Mirror face ball supporting rods are arranged on the surfaces of the large-power illuminating lamp holders and located on the inner sides of the large-powder illuminating lamps. The tops of the mirror face ball supporting rods are provided with mirror face balls. The two sides of each mirror face ball supporting rod are provided with limiting blocks. The surfaces of the large-powder illuminating lamp holders are further provided with controllers. The tops of the supporting columns are connected with a sign body. A printing ink-absorbing layer is arranged on the inner wall of the sign body in a surrounding mode. A light-emitting coating is arranged inside the printing ink-absorbing layer. A hose type diode LED lamp belt is arranged inside the light-emitting coating. According to the light-emitting and light-reflecting water conservancy shipping sign, by arranging the hose type diode LED lamp belt, warnings on the sign can be illuminated with no light, and accidents are avoided.
Owner:杨刚强

Support device

The invention relates to a novel support device which comprises a support plate, a first support leg, a second support leg, a third support leg, a fourth support leg, sliding rods and a power supply controller, wherein the first support leg, the second support leg, the third support leg and the fourth support leg are distributed at the bottom of the support plate; the sliding rods are respectively arranged between the first support leg and the second support leg as well as between the third support leg and the fourth support leg; grooves are respectively formed in the opposite sides of the first support leg and the second support leg as well as in the opposite sides of the third support leg and the fourth support leg; the two ends of the sliding rods can slide along the length directions of the grooves; each groove is internally provided with a guide rail, a sliding block, an array type permanent magnet, a stator coil, a baffle and an electromagnetic coil capable of generating electromagnetic force after being electrified so as to absorb the baffles; the guide rails are arranged along the length directions of the grooves; the upper ends of the sliding blocks are connected with the sliding rods by rotating shafts; the power supply controller acts on the stator coil, so that the traction force for driving the sliding rods to slide is generated by the interaction between the array type permanent magnets and the stator coils.
Owner:江苏希太芯科技有限公司

Vehicle-mounted machine system and power management method and device thereof

The invention provides a vehicle-mountedmachine system and a power supply management method and device of the vehicle-mounted machine system. The vehicle machine system provided by the invention comprises the power supply management device capable of realizing the power supply management method. The vehicle machine system further comprises a plurality of functional modules, and the power supply management method provided by the invention specifically comprises the following steps: responding to the starting of the vehicle machine system; classifying all the functional modules into a first class of functional modules and a second class of functional modules based on use habits of a user; controlling the first class of functional modules to enter a working mode to be in a high-power state; and controlling the second class of functional modules to enter a sleep mode so as to be in a low-power state. The power supply management method provided by the invention can improve the utilization rate of the vehicle machine system, achieves the purpose of saving power under the condition of not influencing the normal use of a user, and is particularly suitable for new energy vehicles with increasingly stringent energy consumption control.
Owner:SHANGHAI QINGGAN INTELLIGENT TECH CO LTD

Conveyors for Material Handling

The invention discloses a conveyor used for carrying materials. The conveyor used for carrying the materials comprises a power device, a conveyor belt, a conveyor belt supporting device, a feeding inlet and a discharging device; the power device and the conveyor belt are connected to provide power for the conveyor belt; the conveyor belt is used for conveying the materials; the conveyor belt supporting device is arranged in the inner circle of the conveyor belt to support the conveyor belt; the feeding inlet is arranged above one end, close to the power device, of the conveyor belt; and the discharging device is arranged on the position where the conveyor belt drops the materials and used for receiving the materials conveyed by the conveyor belt. The conveyor used for carrying the materials further comprises a tensioning device; the tensioning device comprises an upper bracket and a lower bracket; and the upper bracket abuts against the upper part of a belt, the lower bracket abuts against the lower part of the belt, and the upper bracket and the lower bracket can move up and down. According to the tensioning device, the long-distance transportation of the conveyor can be ensured, so that different needs can be met.
Owner:安庆博鳌纵横网络科技有限公司

Electric bicycle instrument with positioning function

The invention discloses an electric bicycle instrument with the positioning function. The instrument comprises a shell, a cooling fan, an access cover and a carbon steel reinforcing layer, a protective cover is fixed to the top end of the shell. A liquid crystal display screen is embedded in the central position of one side of the shell; a brightness sensor is arranged at the top end of one side of the liquid crystal display screen; a speed display column is arranged in the center of one side of the liquid crystal display screen; an electric quantity display strip is arranged on one side of the speed display column; a direction indicator lamp is arranged on the shell above the liquid crystal display screen, the output ends of the temperature sensor and the brightness sensor are electrically connected with the input end of a single-chip microcomputer through wires, and the output end of the single-chip microcomputer is electrically connected with the input ends of a cooling fan and theliquid crystal display screen through wires. The shell, the cover body and the mounting parts are arranged, and the mounting holes are formed in the mounting parts, so that fixed mounting and dismounting of the device are facilitated.
Owner:NANJING DMHC SCI & TECH CO LTD

Conveyor used for carrying materials

The invention discloses a conveyor used for carrying materials. The conveyor used for carrying the materials comprises a power device, a conveyor belt, a conveyor belt supporting device, a feeding inlet and a discharging device; the power device and the conveyor belt are connected to provide power for the conveyor belt; the conveyor belt is used for conveying the materials; the conveyor belt supporting device is arranged in the inner circle of the conveyor belt to support the conveyor belt; the feeding inlet is arranged above one end, close to the power device, of the conveyor belt; and the discharging device is arranged on the position where the conveyor belt drops the materials and used for receiving the materials conveyed by the conveyor belt. The conveyor used for carrying the materials further comprises a tensioning device; the tensioning device comprises an upper bracket and a lower bracket; and the upper bracket abuts against the upper part of a belt, the lower bracket abuts against the lower part of the belt, and the upper bracket and the lower bracket can move up and down. According to the tensioning device, the long-distance transportation of the conveyor can be ensured, so that different needs can be met.
Owner:安庆博鳌纵横网络科技有限公司

A safety protection system for elevators falling

The invention relates to a safety protection system used during elevator falling. The safety protection system comprises a well and an elevator car arranged in the well. The safety protection system further comprises a linear motor buffering device, an air spring device, a magnetic suspension system buffering device, a claw-shaped air bag buffering device and a detection device. A magnetic suspension system comprises a telescopic cylinder, a bottom balance magnet, a coil, a balance base and a linear hall sensor. The claw-shaped air bag buffering device comprises a claw-shaped air bag, a piezoelectric transducer and an inflation device. The detection device comprises a speed sensor, a microprocessor, a power amplifier and a storage battery. According to the safety protection system used during elevator falling, through multi-protection, the stable stepless buffering function can be achieved during elevator falling, personal safety can be protected as well, and the fighting fear of personnel in the elevator car to elevator falling is eliminated.
Owner:TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products