Electric shaver with imaging capability

Abstract

System and method for improving the shaving experience by providing improved visibility of the skin shaving area. A digital camera is integrated with the electric shaver for close image capturing of shaving area, and displaying it on a display unit. The display unit can be integral part of the electric shaver casing, or housed in a separated device which receives the image via a communication channel. The communication channel can be wireless (using radio, audio or light) or wired, such as dedicated cabling or using powerline communication. A light source is used to better illuminate the shaving area. Video compression and digital image processing techniques are used for providing for improved shaving results. The wired communication medium can simultaneously be used also for carrying power from the electric shaver assembly to the display unit, or from the display unit to the electric shaver.

1 . An electrically operated hair removing device for removing hair from a skin area comprising a casing, the casing further comprising a camera module for imaging at least part of the skin area, the camera module comprising:
 an optical lens for focusing received light mechanically oriented to focus the image of at least part of the skin area;   a photosensitive image sensor array disposed approximately at an image focal point plane of the optical lens for capturing the image and producing electronic image information representing the image;   an analog to digital (A/D) converter coupled to said image sensor for generating digital data representation of the image.   
     
     
         2 . The device according to  claim 1  wherein said image sensor is based on Charge-Coupled Devices (CCD) or Complementary Metal-Oxide-Semiconductor (CMOS). 
     
     
         3 . The device according to  claim 1  further operative to transmit the image digital data representation over a communication medium, the device further comprising:
 a port for coupling a signal to the communication medium;   an image processor coupled to said analog to digital converter and for generating a digital data video signal carrying a digital data video according to a digital video format;   a transmitter coupled between said port and said image processor for transmitting the digital data video signal to the communication medium.   
     
     
         4 . The device according to  claim 3  wherein the digital video format is based on one out of: TIFF (Tagged Image File Format), RAW format, AVI, DV, MOV, WMV, MP4, DCF (Design Rule for Camera Format), ITU-T H.261, ITU-T H.263, ITU-T H.264, ITU-T CCIR 601, ASF, Exif (Exchangeable Image File Format) and DP*OF (Digital Print Order Format) standards. 
     
     
         5 . The device according to  claim 3  further operative to compress the digital data video, the device further comprising a video compressor coupled between said an analog to digital (A/D) converter and said transmitter for compressing said digital data video before transmission to the communication medium. 
     
     
         6 . The device according to  claim 5 , wherein the compression is based on intraframe or interframe compression, and wherein the compression is lossy or non-lossy. 
     
     
         7 . The device according to  claim 6 , wherein the compression is based on a standard compression algorithm which is one or more out of JPEG (Joint Photographic Experts Group) and MPEG (Moving Picture Experts Group), ITU-T H.261, ITU-T H.263, ITU-T H.264 and ITU-T CCIR 601. 
     
     
         8 . The device according to  claim 1 , wherein the casing further comprising a battery, and wherein the camera module is power fed from the battery. 
     
     
         9 . The device according to  claim 8 , wherein the battery is rechargeable or primary type. 
     
     
         10 . The device according to  claim 1 , further operative to be powered from AC power, the device further comprising an AC power plug for connecting to an AC power outlet for AC power feeding therefrom and a power supply connected to the AC power plug to be power fed by the AC power, and wherein the camera module is connected to be powered from said power supply. 
     
     
         11 . The device according to  claim 10 , wherein said power supply comprising a step-down transformer and an AC/DC converter for DC powering said camera module. 
     
     
         12 . The device according to  claim 1  further comprising a display for displaying the captured image, the display is mechanically attached to the casing and coupled to said analog to digital converter for visual displaying of the image representation. 
     
     
         13 . The device according to  claim 3  further having a standard analog video interface, wherein the transmitter is an analog video driver. 
     
     
         14 . The device according to  claim 13 , wherein the analog video interface is substantially based on one or more out of NTSC, PAL or SECAM formats, analog RGB and S-video. 
     
     
         15 . The device according to  claim 13 , wherein said port is a coaxial or a RF connector. 
     
     
         16 . The device according to  claim 3  further having a standard digital video interface, wherein the transmitter is a digital video driver and wherein said port is a digital data connector. 
     
     
         17 . The device according to  claim 16 , wherein the digital video interface is substantially based on one or more out of USB, SDI (Serial Digital Interface), FireWire, HDMI (High-Definition Multimedia Interface), DVI (Digital Visual Interface), UDI (Unified Display Interface), DisplayPort, Digital Component Video and DVB. 
     
     
         18 . The device according to  claim 3 , wherein the communication medium is free air propagation of electromagnetic radio-frequency waves, wherein said port is an antenna for transmitting the wireless signal to the air, and wherein said transceiver is wireless transceiver. 
     
     
         19 . The device according to  claim 18 , wherein the wireless communication and the wireless signal are based on standard WPAN (Wireless Personal Area Network) or WLAN (Wireless Local area Network) technologies. 
     
     
         20 . The device according to  claim 18 , wherein the wireless communication and the wireless signal substantially conforms to at least one of the following standards WMAN, WAN, BWA, LMDS, MMDS, WiMAX, HIPERMAN, IEEE802.16, Bluetooth, IEEE802.15, UWB (Ultra-Wide-band), ZigBee, cellular, IEEE802.11, WirelessHD, GSM, GPRS, 2.5G, 3G, UMTS, DCS, PCS and CDMA. 
     
     
         21 . The device according to  claim 3  wherein the communication medium is a wired medium, wherein said port is a connector, and wherein said transmitter is a wired transmitter adapted to transmit digital data to the wired medium. 
     
     
         22 . The device according to  claim 21  wherein the communication over the wired medium is according to a wired PAN (Personal Area Network) or a LAN (Local area Network) standard, and wherein the communication is based serial or parallel transmission. 
     
     
         23 . The device according to  claim 22  wherein the wired medium is LAN cable substantially according to EIT/TIA-568 or EIA/TIA-570 comprising UTP or STP twisted-pairs, wherein the connector is RJ-45 type, wherein the communication over the cable substantially conforms to IEEE802.3 Ethernet 10 BaseT or 100 BaseTX or 1000 BaseT, and wherein the transmitter is a LAN transceiver. 
     
     
         24 . The device according to  claim 22  wherein the communication over the wired medium, the wired transmitter and the connector substantially conforms to one out of IEEE1394, USB (Universal Serial Bus), EIA/TIA-232 and IEEE1284. 
     
     
         25 . The device according to  claim 3  wherein the communication medium is a cable, wherein said port is a connector, wherein said transmitter is a wired transmitter adapted to transmit digital data to the wired medium, wherein said cable concurrently carries a power signal, and wherein the device is at least in part powered from said power signal. 
     
     
         26 . The device according to  claim 25  wherein said power signal is DC (Direct Current) power signal. 
     
     
         27 . The device according to  claim 25  wherein said power signal is AC (Alternating Current) power signal. 
     
     
         28 . The device according to  claim 25  wherein said cable comprising multiple insulated wires, and wherein the power signal is carried over dedicated wires distinct from the wires carrying the communication signal. 
     
     
         29 . The device according to  claim 25  wherein said cable comprising multiple insulated wires, and wherein the same wires are used to simultaneously carry both power and communication signals. 
     
     
         30 . The device according to  claim 29  wherein the power and communication signals are carried over the same wires. 
     
     
         31 . The device according to  claim 30  wherein the power and communication signals are carried over the same wires, and wherein the power is a DC power carrying over a phantom channel over the wires. 
     
     
         32 . The device according to  claim 31  wherein the cable is a LAN cable substantially according to EIT/TIA-568 or EIA/TIA-570 and comprising UTP or STP twisted-pairs, wherein the connector is RJ-45 type, wherein the communication over the cable substantially conforms to IEEE802.3 Ethernet 10 BaseT or 100 BaseTX or 1000 BaseT, and wherein the transmitter is a LAN transceiver, and wherein the power is carried over the cable substantially according to IEEE802.3af or IEEE802.3at standards. 
     
     
         32 . The device according to  claim 30  wherein the power and communication signals are carried over the same wires using Frequency Division Multiplexing (FDM), wherein the power signal is carried over a power frequency, and wherein the communication signal is carried over a communication frequency band distinct and above the power frequency. 
     
     
         33 . The device according to  claim 32  further comprising a low pass filter coupled between said connector and said transmitter for substantially passing only the power frequency, for powering the transmitter from said power signal. 
     
     
         34 . The device according to  claim 32  further comprising an high pass filter coupled between said connector and said transmitter for substantially passing only the communication frequency band, for passing the communication signal between said connector and said transmitter. 
     
     
         35 . The device according to  claim 34  wherein the power is AC power, the connector is AC power plug for connecting to AC power wiring, and the transmitter is part of a powerlines modem. 
     
     
         36 . The device according to  claim 35  wherein said modem and the communication over the AC power substantially conform to HomePlug or UPB. 
     
     
         37 . The device according to  claim 3 , wherein the communication over the communication medium is half-duplex or full-duplex, and wherein the device further comprising a receiver coupled to said port for receiving information from the communication medium. 
     
     
         38 . The device according to  claim 1  further comprising:
 an additional optical lens for focusing received light mechanically oriented to guide the image of at least part of the skin area;   an additional photosensitive image sensor array disposed approximately at an image focal point plane of the additional optical lens for capturing the image and producing additional electronic image information representing the image;   an additional analog to digital (A/D) converter coupled to said additional image sensor for generating an additional digital data representation of the image.   
     
     
         39 . The device according to  claim 38  further comprising:
 a multiplexer coupled to said analog to digital converters for generating a multiplexed signal comprising said digital data representation of the images;   a port for coupling a signal to the communication medium;   a transmitter coupled between said port and said image processor for transmitting the multiplexed signal to the communication medium.   
     
     
         40 . The device according to  claim 1  further comprising a digital image processor for processing the digital data representation of the image. 
     
     
         41 . The device according to  claim 40  wherein the digital image processor operative to identify individual hair or a hairy area in the captured image. 
     
     
         42 . The device according to  claim 41  wherein the device is further operative to generate a digital data representation of the image wherein the individual hairs or the hairy area are marked. 
     
     
         43 . The device according to  claim 1  further comprising a light source for providing an illumination. 
     
     
         44 . The device according to  claim 43  wherein the light source is mechanically mounted for illumination of at least part of the skin area captured by said optical lens and image sensor. 
     
     
         45 . The device according to  claim 43  wherein said light source is a LED (Light Emitting Diode). 
     
     
         46 . The device according to  claim 1  further comprising an electric motor and a cutter driven by said motor.