angular
 .module('app')
 .service('ObjectService', [ObjectService]);
function ObjectService() {
 var list = {};
 return {
  get: function(id){
   return list[id];
  },
  set: function(id, v){
   list[id] = v;
  }
 };
}

// one controller
angular
 .module('app')
 .controller('OneController', ['$scope', OneController]);
function OneController($scope){
 var data = {value: 'test'};
 $rootScope.$broadcast('open.notice.editor', data);
}

// other controller
angular
 .module('app')
 .controller('AnotherController', ['$scope', AnotherController]);
function AnotherController($scope){
 $scope.$on('open.notice.editor', function(event, data){
  $scope.open(data);
  $scope.$emit('notice.editor.opened');
 });
}

<div ng-controller="ParentController">
 <div ng-controller="ChildOneController"></div>
 <div ng-controller="ChildTwoController"></div>
</div>

// 父控制器
angular
 .module('app')
 .controller('ParentController', ['$scope', ParentController]);
function ParentController($scope){
 // 用于传递数据的变量
 $scope.data = null;
}

// 子控制器
angular
 .module('app')
 .controller('ChildOneController', ['$scope', ChildOneController]);
function ChildOneController($scope){
 // 数据设置
 $scope.$parent.data = 1;
}

// 子控制器
angular
 .module('app')
 .controller('ChildTwoController', ['$scope', '$timeout', ChildTwoController]);
function ChildTwoController($scope, $timeout){
 $timeout(function(){
  // 数据读取
  console.log($scope.$parent.data);
 }, 1000);
}

// one controller
angular
 .module('app')
 .controller('OneController', ['$scope', '$window', OneController]);
function OneController($scope, $window){
 // 数据设置
 $window.data = 1;
}

// other controller
angular
 .module('app')
 .controller('AnotherController', ['$scope', AnotherController]);
function AnotherController($scope){
 // 监听修改
 $scope.$watch(function(){
  return $window.data;
 }, function(n){
  $scope.windowData = n;
 });
}

<div ng-controller="AppController">
 <div id="div-a"></div>
</div>

var instance = angular.element(document.getElementById('div-a')).scope();